backend\A64\exception_handler_posix.cpp: remove unused header

We don't actually patch anything in those locations beside a jump.

.appveyor.yml

@@ -3,8 +3,6 @@ clone_depth: 5
 
 environment:
   matrix:
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      cmake_generator: "Visual Studio 14 2015 Win64"
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       cmake_generator: "Visual Studio 15 2017 Win64"
 
@@ -17,13 +15,13 @@ configuration:
 install:
   - git submodule update --init --recursive
   - cd externals
-  - git clone https://github.com/citra-emu/ext-boost boost
+  - git clone https://github.com/MerryMage/ext-boost boost
   - cd ..
 
 before_build:
   - mkdir build
   - cd build
-  - cmake .. -G "%cmake_generator%" -DDYNARMIC_USE_SYSTEM_BOOST=0 -DBoost_INCLUDE_DIRS=%cd%/../externals/boost
+  - cmake .. -G "%cmake_generator%" -DBoost_INCLUDE_DIRS=%cd%/../externals/boost
   - cd ..
 
 build:

.gitignore

@@ -0,0 +1,6 @@
+# Built files
+build/
+docs/Doxygen/
+.vs/
+# Generated files
+src/backend/x64/mig/

.travis.yml

@@ -1,22 +1,80 @@
 language: cpp
 
+cache: ccache
+
 matrix:
   include:
-    - os: linux
-      sudo: required
+    - env: NAME="Linux Build" GCC_VERSION=7
+      os: linux
       dist: trusty
       addons:
         apt:
           sources:
             - ubuntu-toolchain-r-test
           packages:
-            - gcc-6
-            - g++-6
-            - lib32stdc++6 # For CMake
-      install: ./.travis/deps-x86_64-linux.sh
-      script: ./.travis/build-x86_64-linux.sh
-    - os: osx
+            - gcc-7
+            - g++-7
+            - ninja-build
+      install: ./.travis/build-x86_64-linux/deps.sh
+      script: ./.travis/build-x86_64-linux/build.sh
+    - env: NAME="Linux Build" GCC_VERSION=8
+      os: linux
+      dist: trusty
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - gcc-8
+            - g++-8
+            - ninja-build
+      install: ./.travis/build-x86_64-linux/deps.sh
+      script: ./.travis/build-x86_64-linux/build.sh
+    - env: NAME="Linux aarch64 Build"
+      os: linux
+      dist: bionic
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+          - gcc-8-aarch64-linux-gnu
+          - g++-8-aarch64-linux-gnu
+          - ninja-build
+          - qemu-user
+      install: ./.travis/build-aarch64-linux/deps.sh
+      script: ./.travis/build-aarch64-linux/build.sh
+    - env: NAME="macOS Build"
+      os: osx
       sudo: false
-      osx_image: xcode7.3
-      install: ./.travis/deps-x86_64-macos.sh
-      script: ./.travis/build-x86_64-macos.sh
+      osx_image: xcode10.2
+      install: ./.travis/build-x86_64-macos/deps.sh
+      script: ./.travis/build-x86_64-macos/build.sh
+    - env: NAME="Test - Fuzz against Unicorn"
+      os: linux
+      dist: bionic
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - gcc-7
+            - g++-7
+            - llvm-dev
+            - ninja-build
+      install: ./.travis/test-with-unicorn-on-x86_64-linux/deps.sh
+      script: ./.travis/test-with-unicorn-on-x86_64-linux/build.sh
+    - env: NAME="Test - SSE3 only"
+      os: linux
+      dist: bionic
+      addons:
+        apt:
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - gcc-7
+            - g++-7
+            - llvm-dev
+            - ninja-build
+      install: ./.travis/sse3-only-on-x86_64-linux/deps.sh
+      script: ./.travis/sse3-only-on-x86_64-linux/build.sh

.travis/build-aarch64-linux/build.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -e
+set -x
+
+export CC=aarch64-linux-gnu-gcc-8
+export CXX=aarch64-linux-gnu-g++-8
+
+mkdir build && cd build
+cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release -G Ninja
+ninja
+
+qemu-aarch64 -L /usr/aarch64-linux-gnu ./tests/dynarmic_tests -d yes

.travis/build-aarch64-linux/deps.sh

@@ -5,5 +5,5 @@ set -x
 
 # TODO: This isn't ideal.
 cd externals
-git clone https://github.com/citra-emu/ext-boost
+git clone https://github.com/MerryMage/ext-boost
 cd ..

.travis/build-x86_64-linux.sh

@@ -1,14 +0,0 @@
-#!/bin/sh
-
-set -e
-set -x
-
-export CC=gcc-6
-export CXX=g++-6
-export PKG_CONFIG_PATH=$HOME/.local/lib/pkgconfig:$PKG_CONFIG_PATH
-
-mkdir build && cd build
-cmake .. -DDYNARMIC_USE_SYSTEM_BOOST=0 -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release
-make -j4
-
-ctest -VV -C Release

.travis/build-x86_64-linux/build.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -e
+set -x
+
+export CC=gcc-${GCC_VERSION}
+export CXX=g++-${GCC_VERSION}
+export PKG_CONFIG_PATH=$HOME/.local/lib/pkgconfig:$PKG_CONFIG_PATH
+
+mkdir build && cd build
+cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release -G Ninja
+ninja
+
+./tests/dynarmic_tests --durations yes

.travis/build-x86_64-linux/deps.sh

@@ -5,9 +5,9 @@ set -x
 
 # TODO: This isn't ideal.
 cd externals
-git clone https://github.com/citra-emu/ext-boost
+git clone https://github.com/MerryMage/ext-boost
 cd ..
 
 mkdir -p $HOME/.local
-curl -L https://cmake.org/files/v3.4/cmake-3.4.1-Linux-i386.tar.gz \
+curl -L https://cmake.org/files/v3.8/cmake-3.8.0-Linux-x86_64.tar.gz \
     | tar -xz -C $HOME/.local --strip-components=1

.travis/build-x86_64-macos.sh

@@ -1,11 +0,0 @@
-#!/bin/sh
-
-set -e
-set -x
-set -o pipefail
-
-export MACOSX_DEPLOYMENT_TARGET=10.9
-
-mkdir build && cd build
-cmake .. -GXcode -DDYNARMIC_USE_SYSTEM_BOOST=0 -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DDYNARMIC_TESTS=0
-xcodebuild -configuration Release

.travis/build-x86_64-macos/build.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+set -e
+set -x
+set -o pipefail
+
+export MACOSX_DEPLOYMENT_TARGET=10.12
+
+mkdir build && cd build
+cmake .. -GXcode -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DDYNARMIC_TESTS=0
+xcodebuild -configuration Release

.travis/build-x86_64-macos/deps.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+set -e
+set -x
+
+# TODO: This isn't ideal.
+cd externals
+git clone https://github.com/MerryMage/ext-boost
+cd ..

.travis/sse3-only-on-x86_64-linux/build.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+set -e
+set -x
+
+export CC=gcc-7
+export CXX=g++-7
+export PKG_CONFIG_PATH=$HOME/.local/lib/pkgconfig:$PKG_CONFIG_PATH
+export UNICORNDIR=$(pwd)/externals/unicorn
+
+mkdir build && cd build
+cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release -DDYNARMIC_USE_LLVM=1 -DDYNARMIC_TESTS_USE_UNICORN=1 -DDYNARMIC_ENABLE_CPU_FEATURE_DETECTION=0 -G Ninja
+ninja
+
+./tests/dynarmic_tests --durations yes

.travis/sse3-only-on-x86_64-linux/deps.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+set -x
+
+python3 --version
+
+# TODO: This isn't ideal.
+cd externals
+git clone https://github.com/MerryMage/ext-boost
+git clone https://github.com/MerryMage/unicorn
+cd unicorn
+UNICORN_ARCHS=aarch64,arm ./make.sh
+cd ../..
+
+mkdir -p $HOME/.local
+curl -L https://cmake.org/files/v3.8/cmake-3.8.0-Linux-x86_64.tar.gz \
+    | tar -xz -C $HOME/.local --strip-components=1

.travis/test-with-unicorn-on-x86_64-linux/build.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+set -e
+set -x
+
+export CC=gcc-7
+export CXX=g++-7
+export PKG_CONFIG_PATH=$HOME/.local/lib/pkgconfig:$PKG_CONFIG_PATH
+export UNICORNDIR=$(pwd)/externals/unicorn
+
+mkdir build && cd build
+cmake .. -DBoost_INCLUDE_DIRS=${PWD}/../externals/ext-boost -DCMAKE_BUILD_TYPE=Release -DDYNARMIC_USE_LLVM=1 -DDYNARMIC_TESTS_USE_UNICORN=1 -G Ninja
+ninja
+
+./tests/dynarmic_tests --durations yes

.travis/test-with-unicorn-on-x86_64-linux/deps.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+set -x
+
+python3 --version
+
+# TODO: This isn't ideal.
+cd externals
+git clone https://github.com/MerryMage/ext-boost
+git clone https://github.com/MerryMage/unicorn
+cd unicorn
+UNICORN_ARCHS="arm aarch64" ./make.sh
+cd ../..
+
+mkdir -p $HOME/.local
+curl -L https://cmake.org/files/v3.8/cmake-3.8.0-Linux-x86_64.tar.gz \
+    | tar -xz -C $HOME/.local --strip-components=1

CMakeLists.txt

@@ -1,5 +1,5 @@
-cmake_minimum_required(VERSION 3.2)
-project(dynarmic CXX)
+cmake_minimum_required(VERSION 3.8)
+project(dynarmic C CXX)
 
 # Determine if we're built as a subproject (using add_subdirectory)
 # or if this is the master project.
@@ -9,19 +9,28 @@ if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
 endif()
 
 # Dynarmic project options
-option(DYNARMIC_USE_SYSTEM_BOOST "Use the system boost libraries" ON)
-option(DYNARMIC_USE_LLVM "Support disassembly of jitted x86_64 code using LLVM" OFF)
+option(DYNARMIC_ENABLE_CPU_FEATURE_DETECTION "Turning this off causes dynarmic to assume the host CPU doesn't support anything later than SSE3" ON)
+option(DYNARMIC_ENABLE_NO_EXECUTE_SUPPORT "Enables support for systems that require W^X" OFF)
+option(DYNARMIC_FATAL_ERRORS "Errors are fatal" OFF)
 option(DYNARMIC_TESTS "Build tests" ${MASTER_PROJECT})
+option(DYNARMIC_TESTS_USE_UNICORN "Enable fuzzing tests against unicorn" OFF)
+option(DYNARMIC_USE_LLVM "Support disassembly of jitted x86_64 code using LLVM" OFF)
 option(DYNARMIC_WARNINGS_AS_ERRORS "Warnings as errors" ${MASTER_PROJECT})
+if (NOT DEFINED DYNARMIC_FRONTENDS)
+    set(DYNARMIC_FRONTENDS "A32;A64" CACHE STRING "Selects which frontends to enable")
+endif()
+
+# Default to a Release build
+if (NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel." FORCE)
+    message(STATUS "Defaulting to a Release build")
+endif()
 
 # Set hard requirements for C++
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
-# Warn on CMake API deprecations
-set(CMAKE_WARN_DEPRECATED ON)
-
 # Disable in-source builds
 set(CMAKE_DISABLE_SOURCE_CHANGES ON)
 set(CMAKE_DISABLE_IN_SOURCE_BUILD ON)
@@ -35,6 +44,7 @@ list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/CMakeModules")
 # Compiler flags
 if (MSVC)
     set(DYNARMIC_CXX_FLAGS
+        /std:c++latest # CMAKE_CXX_STANDARD has no effect on MSVC until CMake 3.10.
         /W4
         /w34263 # Non-virtual member function hides base class virtual function
         /w44265 # Class has virtual functions, but destructor is not virtual
@@ -49,8 +59,11 @@ if (MSVC)
         /Zi
         /Zo
         /EHsc
-        /Zc:throwingNew # Assumes new never returns null
-        /Zc:inline # Omits inline functions from object-file output
+        /Zc:externConstexpr # Allows external linkage for variables declared "extern constexpr", as the standard permits.
+        /Zc:inline          # Omits inline functions from object-file output.
+        /Zc:throwingNew     # Assumes new (without std::nothrow) never returns null.
+        /volatile:iso       # Use strict standard-abiding volatile semantics
+        /bigobj             # Increase number of sections in .obj files
         /DNOMINMAX)
 
     if (DYNARMIC_WARNINGS_AS_ERRORS)
@@ -70,43 +83,41 @@ else()
         -Wcast-qual
         -pedantic
         -pedantic-errors
-        -Wfatal-errors
         -Wno-missing-braces)
 
     if (DYNARMIC_WARNINGS_AS_ERRORS)
         list(APPEND DYNARMIC_CXX_FLAGS
              -Werror)
     endif()
+
+    if (DYNARMIC_FATAL_ERRORS)
+        list(APPEND DYNARMIC_CXX_FLAGS
+             -Wfatal-errors)
+    endif()
 endif()
 
 # Arch detection
 include(DetectArchitecture)
 if (MSVC)
     detect_architecture("_M_AMD64" x86_64)
-    detect_architecture("_M_IX86" x86)
-    detect_architecture("_M_ARM" ARM)
+    detect_architecture("_M_ARM64" Aarch64)
 else()
     detect_architecture("__x86_64__" x86_64)
-    detect_architecture("__i386__" x86)
-    detect_architecture("__arm__" ARM)
+    detect_architecture("__aarch64__" Aarch64)
 endif()
-if (NOT DEFINED ARCHITECTURE)
-    set(ARCHITECTURE "GENERIC")
-    set(ARCHITECTURE_GENERIC 1)
-    add_definitions(-DARCHITECTURE_GENERIC=1)
+if (NOT DEFINED DYNARMIC_ARCHITECTURE)
+    message(FATAL_ERROR "Unsupported architecture encountered. Ending CMake generation.")
 endif()
-message(STATUS "Target architecture: ${ARCHITECTURE}")
+message(STATUS "Target architecture: ${DYNARMIC_ARCHITECTURE}")
 
 # Include Boost
-if(DYNARMIC_USE_SYSTEM_BOOST)
-    find_package(Boost 1.57.0 REQUIRED)
-else()
-    if(NOT Boost_INCLUDE_DIRS)
-        message(FATAL_ERROR "Please provide a path to a boost installation using Boost_INCLUDE_DIRS")
+if (NOT TARGET boost)
+    if (NOT Boost_INCLUDE_DIRS)
+        find_package(Boost 1.57.0 REQUIRED)
     endif()
+    add_library(boost INTERFACE)
+    target_include_directories(boost SYSTEM INTERFACE ${Boost_INCLUDE_DIRS})
 endif()
-add_library(boost INTERFACE IMPORTED)
-set_property(TARGET boost PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${Boost_INCLUDE_DIRS})
 
 # Enable unit-testing.
 enable_testing(true)
@@ -116,7 +127,11 @@ if (DYNARMIC_USE_LLVM)
     find_package(LLVM REQUIRED CONFIG)
     include_directories(${LLVM_INCLUDE_DIRS})
     add_definitions(-DDYNARMIC_USE_LLVM ${LLVM_DEFINITIONS})
-    llvm_map_components_to_libnames(llvm_libs x86desc x86disassembler)
+    llvm_map_components_to_libnames(llvm_libs armdesc armdisassembler aarch64desc aarch64disassembler x86desc x86disassembler)
+endif()
+
+if (DYNARMIC_TESTS_USE_UNICORN)
+    find_package(Unicorn REQUIRED)
 endif()
 
 # Pull in externals CMakeLists for libs where available

CMakeModules/CreateDirectoryGroups.cmake

@@ -1,12 +1,14 @@
-# This function should be passed a list of all files in a target. It will automatically generate
+# This function should be passed a name of an existing target. It will automatically generate
 # file groups following the directory hierarchy, so that the layout of the files in IDEs matches the
 # one in the filesystem.
-function(create_directory_groups)
+function(create_target_directory_groups target_name)
     # Place any files that aren't in the source list in a separate group so that they don't get in
     # the way.
     source_group("Other Files" REGULAR_EXPRESSION ".")
 
-    foreach(file_name ${ARGV})
+    get_target_property(target_sources "${target_name}" SOURCES)
+
+    foreach(file_name IN LISTS target_sources)
         get_filename_component(dir_name "${file_name}" PATH)
         # Group names use '\' as a separator even though the entire rest of CMake uses '/'...
         string(REPLACE "/" "\\" group_name "${dir_name}")

CMakeModules/DetectArchitecture.cmake

@@ -1,6 +1,6 @@
 include(CheckSymbolExists)
 function(detect_architecture symbol arch)
-    if (NOT DEFINED ARCHITECTURE)
+    if (NOT DEFINED DYNARMIC_ARCHITECTURE)
         set(CMAKE_REQUIRED_QUIET 1)
         check_symbol_exists("${symbol}" "" ARCHITECTURE_${arch})
         unset(CMAKE_REQUIRED_QUIET)
@@ -8,7 +8,7 @@ function(detect_architecture symbol arch)
         # The output variable needs to be unique across invocations otherwise
         # CMake's crazy scope rules will keep it defined
         if (ARCHITECTURE_${arch})
-            set(ARCHITECTURE "${arch}" PARENT_SCOPE)
+            set(DYNARMIC_ARCHITECTURE "${arch}" PARENT_SCOPE)
             set(ARCHITECTURE_${arch} 1 PARENT_SCOPE)
             add_definitions(-DARCHITECTURE_${arch}=1)
         endif()

CMakeModules/FindUnicorn.cmake

@@ -0,0 +1,37 @@
+# Exports:
+#
+# Variables:
+#  LIBUNICORN_FOUND
+#  LIBUNICORN_INCLUDE_DIR
+#  LIBUNICORN_LIBRARY
+#
+# Target:
+#  Unicorn::Unicorn
+#
+
+find_path(LIBUNICORN_INCLUDE_DIR
+          unicorn/unicorn.h
+          HINTS $ENV{UNICORNDIR}
+          PATH_SUFFIXES include)
+
+find_library(LIBUNICORN_LIBRARY
+             NAMES unicorn
+             HINTS $ENV{UNICORNDIR})
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(unicorn DEFAULT_MSG LIBUNICORN_LIBRARY LIBUNICORN_INCLUDE_DIR)
+
+if (UNICORN_FOUND)
+    set(THREADS_PREFER_PTHREAD_FLAG ON)
+    find_package(Threads REQUIRED)
+    unset(THREADS_PREFER_PTHREAD_FLAG)
+
+    add_library(Unicorn::Unicorn UNKNOWN IMPORTED)
+    set_target_properties(Unicorn::Unicorn PROPERTIES
+        IMPORTED_LOCATION ${LIBUNICORN_LIBRARY}
+        INTERFACE_INCLUDE_DIRECTORIES ${LIBUNICORN_INCLUDE_DIR}
+        INTERFACE_LINK_LIBRARIES Threads::Threads
+    )
+endif()
+
+mark_as_advanced(LIBUNICORN_INCLUDE_DIR LIBUNICORN_LIBRARY)

LICENSE.txt

@@ -1,339 +1,12 @@
-            GNU GENERAL PUBLIC LICENSE
-               Version 2, June 1991
+Copyright (C) 2017 MerryMage
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
+Permission to use, copy, modify, and/or distribute this software for
+any purpose with or without fee is hereby granted.
 
-                Preamble
-
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Lesser General Public License instead.)  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-this service if you wish), that you receive source code or can get it
-if you want it, that you can change the software or use pieces of it
-in new free programs; and that you know you can do these things.
-
-  To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
-distribute copies of the software, or if you modify it.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must give the recipients all the rights that
-you have.  You must make sure that they, too, receive or can get the
-source code.  And you must show them these terms so they know their
-rights.
-
-  We protect your rights with two steps: (1) copyright the software, and
-(2) offer you this license which gives you legal permission to copy,
-distribute and/or modify the software.
-
-  Also, for each author's protection and ours, we want to make certain
-that everyone understands that there is no warranty for this free
-software.  If the software is modified by someone else and passed on, we
-want its recipients to know that what they have is not the original, so
-that any problems introduced by others will not reflect on the original
-authors' reputations.
-
-  Finally, any free program is threatened constantly by software
-patents.  We wish to avoid the danger that redistributors of a free
-program will individually obtain patent licenses, in effect making the
-program proprietary.  To prevent this, we have made it clear that any
-patent must be licensed for everyone's free use or not licensed at all.
-
-  The precise terms and conditions for copying, distribution and
-modification follow.
-
-            GNU GENERAL PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
-
-  0. This License applies to any program or other work which contains
-a notice placed by the copyright holder saying it may be distributed
-under the terms of this General Public License.  The "Program", below,
-refers to any such program or work, and a "work based on the Program"
-means either the Program or any derivative work under copyright law:
-that is to say, a work containing the Program or a portion of it,
-either verbatim or with modifications and/or translated into another
-language.  (Hereinafter, translation is included without limitation in
-the term "modification".)  Each licensee is addressed as "you".
-
-Activities other than copying, distribution and modification are not
-covered by this License; they are outside its scope.  The act of
-running the Program is not restricted, and the output from the Program
-is covered only if its contents constitute a work based on the
-Program (independent of having been made by running the Program).
-Whether that is true depends on what the Program does.
-
-  1. You may copy and distribute verbatim copies of the Program's
-source code as you receive it, in any medium, provided that you
-conspicuously and appropriately publish on each copy an appropriate
-copyright notice and disclaimer of warranty; keep intact all the
-notices that refer to this License and to the absence of any warranty;
-and give any other recipients of the Program a copy of this License
-along with the Program.
-
-You may charge a fee for the physical act of transferring a copy, and
-you may at your option offer warranty protection in exchange for a fee.
-
-  2. You may modify your copy or copies of the Program or any portion
-of it, thus forming a work based on the Program, and copy and
-distribute such modifications or work under the terms of Section 1
-above, provided that you also meet all of these conditions:
-
-    a) You must cause the modified files to carry prominent notices
-    stating that you changed the files and the date of any change.
-
-    b) You must cause any work that you distribute or publish, that in
-    whole or in part contains or is derived from the Program or any
-    part thereof, to be licensed as a whole at no charge to all third
-    parties under the terms of this License.
-
-    c) If the modified program normally reads commands interactively
-    when run, you must cause it, when started running for such
-    interactive use in the most ordinary way, to print or display an
-    announcement including an appropriate copyright notice and a
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-Public License instead of this License.
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+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

README.md

@@ -1,10 +1,55 @@
 Dynarmic
 ========
+
 [![Travis CI Build Status](https://api.travis-ci.org/MerryMage/dynarmic.svg?branch=master)](https://travis-ci.org/MerryMage/dynarmic/branches) [![Appveyor CI Build status](https://ci.appveyor.com/api/projects/status/maeiqr41rgm1innm/branch/master?svg=true)](https://ci.appveyor.com/project/MerryMage/dynarmic/branch/master)
 
+A dynamic recompiler for ARM.
 
+### Supported guest architectures
 
-A dynamic recompiler for the ARMv6K architecture.
+* ARMv6K
+* 64-bit ARMv8
+
+### Supported host architectures
+
+* x86-64
+
+There are no plans to support x86-32.
+
+Alternatives to Dynarmic
+------------------------
+
+If you are looking at a recompiler which you can use with minimal effort to run ARM executables on non-native platforms, we would strongly recommend looking at qemu-user-static ([description of qemu-user-static](https://wiki.debian.org/QemuUserEmulation), [using qemu-user-static in combination with Docker to provide a complete emulated environment](https://github.com/multiarch/qemu-user-static)). Having a complete plug-and-play solution is out-of-scope of this project.
+
+Here are some projects with the same goals as dynarmic:
+
+* [ChocolArm64 from Ryujinx](https://github.com/Ryujinx/Ryujinx/tree/master/ChocolArm64) - ARMv8 recompiler on top of RyuJIT
+* [Unicorn](https://www.unicorn-engine.org/) - Recompiling multi-architecture CPU emulator, based on QEMU
+* [SkyEye](http://skyeye.sourceforge.net) - Cached interpreter for ARM
+
+More general alternatives:
+
+* [tARMac](https://davidsharp.com/tarmac/) - Tarmac's use of armlets was initial inspiration for us to use an intermediate representation
+* [QEMU](https://www.qemu.org/) - Recompiling multi-architecture system emulator
+* [VisUAL](https://salmanarif.bitbucket.io/visual/index.html) - Visual ARM UAL emulator intended for education
+* A wide variety of other recompilers, interpreters and emulators can be found embedded in other projects, here are some we would recommend looking at:
+  * [firebird's recompiler](https://github.com/nspire-emus/firebird) - Takes more of a call-threaded approach to recompilation
+  * [higan's arm7tdmi emulator](https://gitlab.com/higan/higan/tree/master/higan/component/processor/arm7tdmi) - Very clean code-style
+  * [arm-js by ozaki-r](https://github.com/ozaki-r/arm-js) - Emulates ARMv7A and some peripherals of Versatile Express, in the browser
+
+Disadvantages of Dynarmic
+-------------------------
+
+In the pursuit of speed, some behavior not commonly depended upon is elided. Therefore this emulator does not match spec.
+
+Known examples:
+
+* Only user-mode is emulated, there is no emulation of any other privilege levels.
+* FPSR state is approximate.
+* Misaligned loads/stores are not appropriately trapped in certain cases.
+* Exclusive monitor behavior may not match any known physical processor.
+
+As with most other hobby ARM emulation projects, no formal verification has been done. Use this code base at your own risk.
 
 Documentation
 -------------
@@ -14,11 +59,268 @@ Design documentation can be found at [docs/Design.md](docs/Design.md).
 Plans
 -----
 
+### Near-term
+
+* Complete ARMv8 support
+
 ### Medium-term
 
-* [Optimizations](https://github.com/MerryMage/dynarmic/issues/22)
+* Optimizations
 
 ### Long-term
 
-* ARMv7A support
-* ARMv5 support
+* ARMv7A guest support
+* ARMv5 guest support
+* ARMv8 host support
+
+Usage Example
+-------------
+
+The below is a minimal example. Bring-your-own memory system.
+
+```cpp
+#include <array>
+#include <cstdint>
+#include <cstdio>
+#include <exception>
+
+#include <dynarmic/A32/a32.h>
+#include <dynarmic/A32/config.h>
+
+using u8 = std::uint8_t;
+using u16 = std::uint16_t;
+using u32 = std::uint32_t;
+using u64 = std::uint64_t;
+
+class MyEnvironment final : public Dynarmic::A32::UserCallbacks {
+public:
+    u64 ticks_left = 0;
+    std::array<u8, 2048> memory{};
+
+    u8 MemoryRead8(u32 vaddr) override {
+        if (vaddr >= memory.size()) {
+            return 0;
+        }
+        return memory[vaddr];
+    }
+
+    u16 MemoryRead16(u32 vaddr) override {
+        return u16(MemoryRead8(vaddr)) | u16(MemoryRead8(vaddr + 1)) << 8;
+    }
+
+    u32 MemoryRead32(u32 vaddr) override {
+        return u32(MemoryRead16(vaddr)) | u32(MemoryRead16(vaddr + 2)) << 16;
+    }
+
+    u64 MemoryRead64(u32 vaddr) override {
+        return u64(MemoryRead32(vaddr)) | u64(MemoryRead32(vaddr + 4)) << 32;
+    }
+
+    void MemoryWrite8(u32 vaddr, u8 value) override {
+        if (vaddr >= memory.size()) {
+            return;
+        }
+        memory[vaddr] = value;
+    }
+
+    void MemoryWrite16(u32 vaddr, u16 value) override {
+        MemoryWrite8(vaddr, u8(value));
+        MemoryWrite8(vaddr + 1, u8(value >> 8));
+    }
+
+    void MemoryWrite32(u32 vaddr, u32 value) override {
+        MemoryWrite16(vaddr, u16(value));
+        MemoryWrite16(vaddr + 2, u16(value >> 16));
+    }
+
+    void MemoryWrite64(u32 vaddr, u64 value) override {
+        MemoryWrite32(vaddr, u32(value));
+        MemoryWrite32(vaddr + 4, u32(value >> 32));
+    }
+
+    void InterpreterFallback(u32 pc, size_t num_instructions) override {
+        // This is never called in practice.
+        std::terminate();
+    }
+
+    void CallSVC(u32 swi) override {
+        // Do something.
+    }
+
+    void ExceptionRaised(u32 pc, Dynarmic::A32::Exception exception) override {
+        // Do something.
+    }
+
+    void AddTicks(u64 ticks) override {
+        if (ticks > ticks_left) {
+            ticks_left = 0;
+            return;
+        }
+        ticks_left -= ticks;
+    }
+
+    u64 GetTicksRemaining() override {
+        return ticks_left;
+    }
+};
+
+int main(int argc, char** argv) {
+    MyEnvironment env;
+    Dynarmic::A32::UserConfig user_config;
+    user_config.callbacks = &env;
+    Dynarmic::A32::Jit cpu{user_config};
+
+    // Execute at least 1 instruction.
+    // (Note: More than one instruction may be executed.)
+    env.ticks_left = 1;
+
+    // Write some code to memory.
+    env.MemoryWrite16(0, 0x0088); // lsls r0, r1, #2
+    env.MemoryWrite16(2, 0xE7FE); // b +#0 (infinite loop)
+
+    // Setup registers.
+    cpu.Regs()[0] = 1;
+    cpu.Regs()[1] = 2;
+    cpu.Regs()[15] = 0; // PC = 0
+    cpu.SetCpsr(0x00000030); // Thumb mode
+
+    // Execute!
+    cpu.Run();
+
+    // Here we would expect cpu.Regs()[0] == 8
+    printf("R0: %u\n", cpu.Regs()[0]);
+
+    return 0;
+}
+```
+
+Legal
+-----
+
+dynarmic is under a 0BSD license. See LICENSE.txt for more details.
+
+dynarmic uses several other libraries, whose licenes are included below:
+
+### catch
+
+```
+Boost Software License - Version 1.0 - August 17th, 2003
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
+must be included in all copies of the Software, in whole or in part, and
+all derivative works of the Software, unless such copies or derivative
+works are solely in the form of machine-executable object code generated by
+a source language processor.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+```
+
+### fmt
+
+```
+Copyright (c) 2012 - 2016, Victor Zverovich
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+```
+
+### mp
+
+```
+Copyright (C) 2017 MerryMage
+
+Permission to use, copy, modify, and/or distribute this software for
+any purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+```
+
+### xbyak
+
+```
+Copyright (c) 2007 MITSUNARI Shigeo
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+Redistributions of source code must retain the above copyright notice, this
+list of conditions and the following disclaimer.
+Redistributions in binary form must reproduce the above copyright notice,
+this list of conditions and the following disclaimer in the documentation
+and/or other materials provided with the distribution.
+Neither the name of the copyright owner nor the names of its contributors may
+be used to endorse or promote products derived from this software without
+specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+THE POSSIBILITY OF SUCH DAMAGE.
+-----------------------------------------------------------------------------
+ソースコード形式かバイナリ形式か、変更するかしないかを問わず、以下の条件を満た
+す場合に限り、再頒布および使用が許可されます。
+
+ソースコードを再頒布する場合、上記の著作権表示、本条件一覧、および下記免責条項
+を含めること。
+バイナリ形式で再頒布する場合、頒布物に付属のドキュメント等の資料に、上記の著作
+権表示、本条件一覧、および下記免責条項を含めること。
+書面による特別の許可なしに、本ソフトウェアから派生した製品の宣伝または販売促進
+に、著作権者の名前またはコントリビューターの名前を使用してはならない。
+本ソフトウェアは、著作権者およびコントリビューターによって「現状のまま」提供さ
+れており、明示黙示を問わず、商業的な使用可能性、および特定の目的に対する適合性
+に関する暗黙の保証も含め、またそれに限定されない、いかなる保証もありません。
+著作権者もコントリビューターも、事由のいかんを問わず、 損害発生の原因いかんを
+問わず、かつ責任の根拠が契約であるか厳格責任であるか（過失その他の）不法行為で
+あるかを問わず、仮にそのような損害が発生する可能性を知らされていたとしても、
+本ソフトウェアの使用によって発生した（代替品または代用サービスの調達、使用の
+喪失、データの喪失、利益の喪失、業務の中断も含め、またそれに限定されない）直接
+損害、間接損害、偶発的な損害、特別損害、懲罰的損害、または結果損害について、
+一切責任を負わないものとします。
+```

docs/Design.md

@@ -4,15 +4,18 @@ Dynarmic is a dynamic recompiler for the ARMv6K architecture. Future plans for d
 support for other versions of the ARM architecture, having a interpreter mode, and adding support
 for other architectures.
 
-Users of this library interact with it primarily through [`include/dynarmic/dynarmic.h`](../include/dynarmic/dynarmic.h).
-Users specify how dynarmic's CPU core interacts with the rest of their systems by setting members of the
-[`Dynarmic::UserCallbacks`](../include/dynarmic/callbacks.h) structure as appropriate. Users setup the CPU state using member functions of
-`Dynarmic::Jit`, then call `Dynarmic::Jit::Execute` to start CPU execution. The callbacks defined on `UserCallbacks`
-may be called from dynamically generated code, so users of the library should not depend on the stack being in a
-walkable state for unwinding.
+Users of this library interact with it primarily through the interface provided in
+[`include/dynarmic`](../include/dynarmic). Users specify how dynarmic's CPU core interacts with
+the rest of their system providing an implementation of the relevant `UserCallbacks` interface.
+Users setup the CPU state using member functions of `Jit`, then call `Jit::Execute` to start CPU
+execution. The callbacks defined on `UserCallbacks` may be called from dynamically generated code,
+so users of the library should not depend on the stack being in a walkable state for unwinding.
 
-Dynarmic reads instructions from memory by calling `UserCallbacks::MemoryRead32`. These instructions then pass
-through several stages:
+* A32: [`Jit`](../include/dynarmic/A32/a32.h), [`UserCallbacks`](../include/dynarmic/A32/config.h)
+* A64: [`Jit`](../include/dynarmic/A64/a64.h), [`UserCallbacks`](../include/dynarmic/A64/config.h)
+
+Dynarmic reads instructions from memory by calling `UserCallbacks::MemoryReadCode`. These
+instructions then pass through several stages:
 
 1. Decoding (Identifying what type of instruction it is and breaking it up into fields)
 2. Translation (Generation of high-level IR from the instruction)
@@ -20,39 +23,39 @@ through several stages:
 4. Emission (Generation of host-executable code into memory)
 5. Execution (Host CPU jumps to the start of emitted code and runs it)
 
-Using the x64 backend as an example:
+Using the A32 frontend with the x64 backend as an example:
 
 * Decoding is done by [double dispatch](https://en.wikipedia.org/wiki/Visitor_pattern) in
-[`src/frontend/decoder/{arm.h,thumb16.h,thumb32.h}`](../src/frontend/decoder/).
-* Translation is done by the visitors in `src/frontend/translate/translate_{arm,thumb}.cpp`.
-The function [`IR::Block Translate(LocationDescriptor descriptor, MemoryRead32FuncType memory_read_32)`](../src/frontend/translate/translate.h) takes a
-memory location, some CPU state, and memory reader callback and returns a basic block of IR.
+  [`src/frontend/A32/decoder/{arm.h,thumb16.h,thumb32.h}`](../src/frontend/A32/decoder/).
+* Translation is done by the visitors in `src/frontend/A32/translate/translate_{arm,thumb}.cpp`.
+  The function [`Translate`](../src/frontend/A32/translate/translate.h) takes a starting memory location,
+  some CPU state, and memory reader callback and returns a basic block of IR.
 * The IR can be found under [`src/frontend/ir/`](../src/frontend/ir/).
 * Optimizations can be found under [`src/ir_opt/`](../src/ir_opt/).
 * Emission is done by `EmitX64` which can be found in `src/backend_x64/emit_x64.{h,cpp}`.
 * Execution is performed by calling `BlockOfCode::RunCode` in `src/backend_x64/block_of_code.{h,cpp}`.
- 
+
 ## Decoder
 
-The decoder is a double dispatch decoder. Each instruction is represented by a line in the relevant instruction table.
-Here is an example line from `g_arm_instruction_table`:
+The decoder is a double dispatch decoder. Each instruction is represented by a line in the relevant
+instruction table. Here is an example line from [`arm.h`](../src/frontend/A32/decoder/arm.h):
 
     INST(&V::arm_ADC_imm,     "ADC (imm)",           "cccc0010101Snnnnddddrrrrvvvvvvvv")
-        
+
 (Details on this instruction can be found in section A8.8.1 of the ARMv7-A manual. This is encoding A1.)
-    
-The first argument to INST is the member function to call on the visitor. The second argument is a user-readable 
+
+The first argument to INST is the member function to call on the visitor. The second argument is a user-readable
 instruction name. The third argument is a bit-representation of the instruction.
 
 ### Instruction Bit-Representation
 
-Each character in the bitstring represents a bit. A `0` means that that bitposition **must** contain a zero. A `1` 
+Each character in the bitstring represents a bit. A `0` means that that bitposition **must** contain a zero. A `1`
 means that that bitposition **must** contain a one. A `-` means we don't care about the value at that bitposition.
-A string of the same character represents a field. In the above example, the first four bits `cccc` represent the 
+A string of the same character represents a field. In the above example, the first four bits `cccc` represent the
 four-bit-long cond field of the ARM Add with Carry (immediate) instruction.
 
-The visitor would have to have a function named `arm_ADC_imm` with 6 arguments, one for each field (`cccc`, `S`, 
-`nnnn`, `dddd`, `rrrr`, `vvvvvvvv`). If there is a mismatch of field number with argument number, a compile-time 
+The visitor would have to have a function named `arm_ADC_imm` with 6 arguments, one for each field (`cccc`, `S`,
+`nnnn`, `dddd`, `rrrr`, `vvvvvvvv`). If there is a mismatch of field number with argument number, a compile-time
 error results.
 
 ## Translator
@@ -62,9 +65,9 @@ help of the [`IREmitter` class](../src/frontend/ir/ir_emitter.h). An example of
 
     bool ArmTranslatorVisitor::arm_ADC_imm(Cond cond, bool S, Reg n, Reg d, int rotate, Imm8 imm8) {
         u32 imm32 = ArmExpandImm(rotate, imm8);
-        
+
         // ADC{S}<c> <Rd>, <Rn>, #<imm>
-        
+
         if (ConditionPassed(cond)) {
             auto result = ir.AddWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.GetCFlag());
 
@@ -83,22 +86,22 @@ help of the [`IREmitter` class](../src/frontend/ir/ir_emitter.h). An example of
                 ir.SetVFlag(result.overflow);
             }
         }
-        
+
         return true;
     }
 
 where `ir` is an instance of the `IRBuilder` class. Each member function of the `IRBuilder` class constructs
 an IR microinstruction.
- 
-## Intermediate Representation
- 
-Dynarmic uses an ordered SSA intermediate representation. It is very vaguely similar to those found in other 
-similar projects like redream, nucleus, and xenia. Major differences are: (1) the abundance of context microinstructions 
-whereas those projects generally only have two (`load_context`/`store_context`), (2) the explicit handling of 
-flags as their own values, and (3) very different basic block edge handling.
 
-The intention of the context microinstructions and explicit flag handling is to allow for future optimizations. The 
-differences in the way edges are handled are a quirk of the current implementation and dynarmic will likely add a 
+## Intermediate Representation
+
+Dynarmic uses an ordered SSA intermediate representation. It is very vaguely similar to those found in other
+similar projects like redream, nucleus, and xenia. Major differences are: (1) the abundance of context
+microinstructions  whereas those projects generally only have two (`load_context`/`store_context`), (2) the
+explicit handling of flags as their own values, and (3) very different basic block edge handling.
+
+The intention of the context microinstructions and explicit flag handling is to allow for future optimizations. The
+differences in the way edges are handled are a quirk of the current implementation and dynarmic will likely add a
 function analyser in the medium-term future.
 
 Dynarmic's intermediate representation is typed. Each microinstruction may take zero or more arguments and may
@@ -106,6 +109,8 @@ return zero or more arguments. A subset of the microinstructions available is do
 
 A complete list of microinstructions can be found in [src/frontend/ir/opcodes.inc](../src/frontend/ir/opcodes.inc).
 
+The below lists some commonly used microinstructions.
+
 ### Immediate: Imm{U1,U8,U32,RegRef}
 
     <u1> ImmU1(u1 value)
@@ -120,13 +125,13 @@ by the IR.
 
     <u32> GetRegister(<RegRef> reg)
     <void> SetRegister(<RegRef> reg, <u32> value)
-    
+
 Gets and sets `JitState::Reg[reg]`. Note that `SetRegister(Arm::Reg::R15, _)` is disallowed by IRBuilder.
 Use `{ALU,BX}WritePC` instead.
 
 Note that sequences like `SetRegister(R4, _)` followed by `GetRegister(R4)` are
 optimized away.
-    
+
 ### Context: {Get,Set}{N,Z,C,V}Flag
 
     <u1> GetNFlag()
@@ -143,7 +148,7 @@ Gets and sets bits in `JitState::Cpsr`. Similarly to registers redundant get/set
 ### Context: BXWritePC
 
     <void> BXWritePC(<u32> value)
-    
+
 This should probably be the last instruction in a translation block unless you're doing something fancy.
 
 This microinstruction sets R15 and CPSR.T as appropriate.
@@ -165,73 +170,73 @@ Extract a u16 and u8 respectively from a u32.
 
     <u1> MostSignificantBit(<u32> value)
     <u1> IsZero(<u32> value)
-    
+
 These are used to implement ARM flags N and Z. These can often be optimized away by the backend into a host flag read.
 
 ### Calculation: LogicalShiftLeft
-    
+
     (<u32> result, <u1> carry_out) LogicalShiftLeft(<u32> operand, <u8> shift_amount, <u1> carry_in)
-    
+
 Pseudocode:
 
         if shift_amount == 0:
             return (operand, carry_in)
-            
+
         x = operand * (2 ** shift_amount)
         result = Bits<31,0>(x)
         carry_out = Bit<32>(x)
-        
+
         return (result, carry_out)
-         
+
 This follows ARM semantics. Note `shift_amount` is not masked to 5 bits (like `SHL` does on x64).
 
 ### Calculation: LogicalShiftRight
 
     (<u32> result, <u1> carry_out) LogicalShiftLeft(<u32> operand, <u8> shift_amount, <u1> carry_in)
-    
+
 Pseudocode:
 
         if shift_amount == 0:
             return (operand, carry_in)
-            
+
         x = ZeroExtend(operand, from_size: 32, to_size: shift_amount+32)
         result = Bits<shift_amount+31,shift_amount>(x)
         carry_out = Bit<shift_amount-1>(x)
-        
+
         return (result, carry_out)
-             
+
 This follows ARM semantics. Note `shift_amount` is not masked to 5 bits (like `SHR` does on x64).
 
 ### Calculation: ArithmeticShiftRight
 
     (<u32> result, <u1> carry_out) ArithmeticShiftRight(<u32> operand, <u8> shift_amount, <u1> carry_in)
-    
+
 Pseudocode:
 
         if shift_amount == 0:
             return (operand, carry_in)
-            
+
         x = SignExtend(operand, from_size: 32, to_size: shift_amount+32)
         result = Bits<shift_amount+31,shift_amount>(x)
         carry_out = Bit<shift_amount-1>(x)
-        
+
         return (result, carry_out)
-             
+
 This follows ARM semantics. Note `shift_amount` is not masked to 5 bits (like `SAR` does on x64).
 
 ### Calcuation: RotateRight
 
     (<u32> result, <u1> carry_out) RotateRight(<u32> operand, <u8> shift_amount, <u1> carry_in)
-    
+
 Pseudocode:
 
         if shift_amount == 0:
             return (operand, carry_in)
-            
+
         shift_amount %= 32
         result = (operand << shift_amount) | (operand >> (32 - shift_amount))
         carry_out = Bit<31>(result)
-        
+
         return (result, carry_out)
 
 ### Calculation: AddWithCarry
@@ -243,7 +248,7 @@ a + b + carry_in
 ### Calculation: SubWithCarry
 
     (<u32> result, <u1> carry_out, <u1> overflow) SubWithCarry(<u32> a, <u32> b, <u1> carry_in)
-    
+
 This has equivalent semantics to `AddWithCarry(a, Not(b), carry_in)`.
 
 a - b - !carry_in
@@ -251,17 +256,17 @@ a - b - !carry_in
 ### Calculation: And
 
     <u32> And(<u32> a, <u32> b)
-    
+
 ### Calculation: Eor
 
     <u32> Eor(<u32> a, <u32> b)
-    
+
 Exclusive OR (i.e.: XOR)
 
 ### Calculation: Or
 
     <u32> Or(<u32> a, <u32> b)
-    
+
 ### Calculation: Not
 
     <u32> Not(<u32> value)
@@ -282,17 +287,17 @@ Memory access.
 ### Terminal: Interpret
 
     SetTerm(IR::Term::Interpret{next})
-                
+
 This terminal instruction calls the interpreter, starting at `next`.
 The interpreter must interpret exactly one instruction.
-              
+
 ### Terminal: ReturnToDispatch
 
-    SetTerm(IR::Term::ReturnToDispatch{})             
-              
+    SetTerm(IR::Term::ReturnToDispatch{})
+
 This terminal instruction returns control to the dispatcher.
 The dispatcher will use the value in R15 to determine what comes next.
-              
+
 ### Terminal: LinkBlock
 
     SetTerm(IR::Term::LinkBlock{next})

docs/RegisterAllocator.md

@@ -2,12 +2,14 @@
 
 `HostLoc`s contain values. A `HostLoc` ("host value location") is either a host CPU register or a host spill location.
 
-Values once set cannot be changed. Values can however be moved by the register allocator between `HostLoc`s. This is handled by the register allocator itself and code that uses the register allocator need not and should not move values between registers.
+Values once set cannot be changed. Values can however be moved by the register allocator between `HostLoc`s. This is
+handled by the register allocator itself and code that uses the register allocator need not and should not move values
+between registers.
 
 The register allocator is based on three concepts: `Use`, `Def` and `Scratch`.
 
 * `Use`: The use of a value.
-* `Def`: The definition of a value, this is the only time when a value is set.
+* `Define`: The definition of a value, this is the only time when a value is set.
 * `Scratch`: Allocate a register that can be freely modified as one wishes.
 
 Note that `Use`ing a value decrements its `use_count` by one. When the `use_count` reaches zero the value is discarded and no longer exists.
@@ -23,63 +25,52 @@ At runtime, allocate one of the registers in `desired_locations`. You are free t
 
 ### Pure `Use`
 
-    Xbyak::Reg64 UseGpr(IR::Value use_value, HostLocList desired_locations = any_gpr);
-    Xbyak::Xmm UseXmm(IR::Value use_value, HostLocList desired_locations = any_xmm);
-    OpArg UseOpArg(IR::Value use_value, HostLocList desired_locations);
+    Xbyak::Reg64 UseGpr(Argument& arg);
+    Xbyak::Xmm UseXmm(Argument& arg);
+    OpArg UseOpArg(Argument& arg);
+    void Use(Argument& arg, HostLoc host_loc);
 
-At runtime, the value corresponding to `use_value` will be placed into one of the `HostLoc`s specified by `desired_locations`. The return value is the actual location.
+At runtime, the value corresponding to `arg` will be placed a register. The actual register is determined by
+which one of the above functions is called. `UseGpr` places it in an unused GPR, `UseXmm` places it
+in an unused XMM register, `UseOpArg` might be in a register or might be a memory location, and `Use` allows
+you to specify a specific register (GPR or XMM) to use.
 
 This register **must not** have it's value changed.
 
-* `UseGpr`: The location is a GPR.
-* `UseXmm`: The location is an XMM register.
-* `UseOpArg`: The location may be one of the locations specified by `desired_locations`, but may also be a host memory reference.
-
 ### `UseScratch`
 
-    Xbyak::Reg64 UseScratchGpr(IR::Value use_value, HostLocList desired_locations = any_gpr)
-    Xbyak::Xmm UseScratchXmm(IR::Value use_value, HostLocList desired_locations = any_xmm)
+    Xbyak::Reg64 UseScratchGpr(Argument& arg);
+    Xbyak::Xmm UseScratchXmm(Argument& arg);
+    void UseScratch(Argument& arg, HostLoc host_loc);
 
-At runtime, the value corresponding to `use_value` will be placed into one of the `HostLoc`s specified by `desired_locations`. The return value is the actual location.
+At runtime, the value corresponding to `arg` will be placed a register. The actual register is determined by
+which one of the above functions is called. `UseScratchGpr` places it in an unused GPR, `UseScratchXmm` places it
+in an unused XMM register, and `UseScratch` allows you to specify a specific register (GPR or XMM) to use.
 
-You are free to modify the register. The register is discarded at the end of the allocation scope.
+The return value is the register allocated to you.
 
-### `Def`
+You are free to modify the value in the register. The register is discarded at the end of the allocation scope.
 
-A `Def` is the defintion of a value. This is the only time when a value may be set.
+### `Define` as register
 
-    Xbyak::Xmm DefXmm(IR::Inst* def_inst, HostLocList desired_locations = any_xmm)
-    Xbyak::Reg64 DefGpr(IR::Inst* def_inst, HostLocList desired_locations = any_gpr)
+A `Define` is the defintion of a value. This is the only time when a value may be set.
 
-By calling `DefXmm` or `DefGpr`, you are stating that you wish to define the value for `def_inst`, and you wish to write the value to one of the `HostLoc`s specified by `desired_locations`. You must write the value to the register returned.
+    void DefineValue(IR::Inst* inst, const Xbyak::Reg& reg);
 
-### `AddDef`
+By calling `DefineValue`, you are stating that you wish to define the value for `inst`, and you have written the
+value to the specified register `reg`.
 
-Adding a `Def` to an existing value.
+### `Define`ing as an alias of a different value
 
-    void RegisterAddDef(IR::Inst* def_inst, const IR::Value& use_inst);
+Adding a `Define` to an existing value.
 
-You are declaring that the value for `def_inst` is the same as the value for `use_inst`. No host machine instructions are emitted.
+    void DefineValue(IR::Inst* inst, Argument& arg);
 
-### `UseDef`
-
-    Xbyak::Reg64 UseDefGpr(IR::Value use_value, IR::Inst* def_inst, HostLocList desired_locations = any_gpr)
-    Xbyak::Xmm UseDefXmm(IR::Value use_value, IR::Inst* def_inst, HostLocList desired_locations = any_xmm)
-
-At runtime, the value corresponding to `use_value` will be placed into one of the `HostLoc`s specified by `desired_locations`. The return value is the actual location. You must write the value correponding to `def_inst` by the end of the allocation scope.
-
-### `UseDef` (OpArg variant)
-
-    std::tuple<OpArg, Xbyak::Reg64> UseDefOpArgGpr(IR::Value use_value, IR::Inst* def_inst, HostLocList desired_locations = any_gpr)
-    std::tuple<OpArg, Xbyak::Xmm> UseDefOpArgXmm(IR::Value use_value, IR::Inst* def_inst, HostLocList desired_locations = any_xmm)
-
-These have the same semantics as `UseDefGpr` and `UseDefXmm` except `use_value` may not be present in the register, and may actually be in a host memory location.
+You are declaring that the value for `inst` is the same as the value for `arg`. No host machine instructions are
+emitted.
 
 ## When to use each?
 
-The variety of different ways to `Use` and `Def` values are for performance reasons.
-
-* `UseDef`: Instead of performing a `Use` and a `Def`, `UseDef` uses one less register in the case when this `Use` is the last `Use` of a value.
-* `UseScratch`: Instead of performing a `Use` and a `Scratch`, `UseScratch` uses one less register in the case when this `Use` is the last `Use` of a value.
-* `AddDef`: This drastically reduces the number of registers required when it can be used. It can be used when values are truncations of other values. For example, if `u8_value` contains the truncation of `u32_value`, `AddDef(u8_value, u32_value)` is a valid definition of `u8_value`.
-* OpArg variants: Save host code-cache by merging memory loads into other instructions instead of the register allocator having to emit a `mov`.
+* Prefer `Use` to `UseScratch` where possible.
+* Prefer the `OpArg` variants where possible.
+* Prefer to **not** use the specific `HostLoc` variants where possible.

docs/ReturnStackBufferOptimization.md

@@ -26,10 +26,10 @@ computing a 64-bit `UniqueHash` that is guaranteed to uniquely identify a block.
     u64 LocationDescriptor::UniqueHash() const {
         // This value MUST BE UNIQUE.
         // This calculation has to match up with EmitX64::EmitTerminalPopRSBHint
-        u64 pc_u64 = u64(arm_pc);
-        u64 fpscr_u64 = u64(fpscr.Value()) << 32;
-        u64 t_u64 = cpsr.T() ? (1ull << 35) : 0;
-        u64 e_u64 = cpsr.E() ? (1ull << 39) : 0;
+        u64 pc_u64 = u64(arm_pc) << 32;
+        u64 fpscr_u64 = u64(fpscr.Value());
+        u64 t_u64 = cpsr.T() ? 1 : 0;
+        u64 e_u64 = cpsr.E() ? 2 : 0;
         return pc_u64 | fpscr_u64 | t_u64 | e_u64;
     }
 
@@ -120,12 +120,10 @@ To check if a predicition is in the RSB, we linearly scan the RSB.
         using namespace Xbyak::util;
 
         // This calculation has to match up with IREmitter::PushRSB
-        code->mov(ebx, MJitStateCpsr());
         code->mov(ecx, MJitStateReg(Arm::Reg::PC));
-        code->and_(ebx, u32((1 << 5) | (1 << 9)));
-        code->shr(ebx, 2);
-        code->or_(ebx, dword[r15 + offsetof(JitState, FPSCR_mode)]);
-        code->shl(rbx, 32);
+        code->shl(rcx, 32);
+        code->mov(ebx, dword[r15 + offsetof(JitState, FPSCR_mode)]);
+        code->or_(ebx, dword[r15 + offsetof(JitState, CPSR_et)]);
         code->or_(rbx, rcx);
 
         code->mov(rax, u64(code->GetReturnFromRunCodeAddress()));

externals/CMakeLists.txt

@@ -10,7 +10,7 @@ endif()
 if (NOT TARGET xbyak)
     if (ARCHITECTURE_x86 OR ARCHITECTURE_x86_64)
         add_library(xbyak INTERFACE)
-        target_include_directories(xbyak INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/xbyak/xbyak)
+        target_include_directories(xbyak SYSTEM INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/xbyak/xbyak)
         target_compile_definitions(xbyak INTERFACE XBYAK_NO_OP_NAMES)
     endif()
 endif()
@@ -18,3 +18,7 @@ endif()
 add_library(catch INTERFACE)
 target_include_directories(catch INTERFACE
                            $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/catch>)
+
+add_library(mp INTERFACE)
+target_include_directories(mp INTERFACE
+                           $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/mp/include>)

externals/README.md

@@ -0,0 +1,22 @@
+This repository uses subtrees to manage some of its externals.
+
+## Initial setup
+
+```
+git remote add externals-fmt https://github.com/fmtlib/fmt.git
+git remote add externals-mp https://github.com/MerryMage/mp.git
+git remote add externals-xbyak https://github.com/herumi/xbyak.git
+```
+
+## Updating
+
+Change `<ref>` to refer to the appropriate git reference.
+
+```
+git fetch externals-fmt
+git fetch externals-mp
+git fetch externals-xbyak
+git subtree pull --squash --prefix=externals/fmt externals-fmt <ref>
+git subtree pull --squash --prefix=externals/mp externals-mp <ref>
+git subtree pull --squash --prefix=externals/xbyak externals-xbyak <ref>
+```

externals/fmt

@@ -1 +0,0 @@
-Subproject commit 398343897f98b88ade80bbebdcbe82a36c65a980

externals/fmt/.clang-format

@@ -0,0 +1,8 @@
+# Run manually to reformat a file:
+# clang-format -i --style=file <file>
+Language: Cpp
+BasedOnStyle: Google
+IndentPPDirectives: AfterHash
+IndentCaseLabels: false
+AlwaysBreakTemplateDeclarations: false
+DerivePointerAlignment: false

externals/fmt/.github/pull_request_template.md

@@ -0,0 +1,6 @@
+<!-- Please read the contribution guidelines before submitting a pull request. -->
+<!-- By submitting this pull request, you agree that your contributions are licensed under the {fmt} license,
+     and agree to future changes to the licensing. -->
+<!-- If you're a first-time contributor, please acknowledge it by leaving the statement below. -->
+
+I agree that my contributions are licensed under the {fmt} license, and agree to future changes to the licensing.

externals/fmt/.gitignore

@@ -0,0 +1,35 @@
+.vscode/
+.vs/
+
+*.iml
+.idea/
+.externalNativeBuild/
+.gradle/
+gradle/
+gradlew*
+local.properties
+build/
+
+bin/
+/_CPack_Packages
+/CMakeScripts
+/doc/doxyxml
+/doc/html
+virtualenv
+/Testing
+/install_manifest.txt
+*~
+*.a
+*.so*
+*.xcodeproj
+*.zip
+cmake_install.cmake
+CPack*.cmake
+fmt-*.cmake
+CTestTestfile.cmake
+CMakeCache.txt
+CMakeFiles
+FMT.build
+Makefile
+run-msbuild.bat
+fmt.pc

externals/fmt/.travis.yml

@@ -0,0 +1,101 @@
+language: cpp
+dist: trusty
+sudo: false
+
+os: linux
+
+git:
+  depth: 1
+
+env:
+  global:
+    - secure: |-
+        a1eovNn4uol9won7ghr67eD3/59oeESN+G9bWE+ecI1V6yRseG9whniGhIpC/YfMW/Qz5I
+        5sxSmFjaw9bxCISNwUIrL1O5x2AmRYTnFcXk4dFsUvlZg+WeF/aKyBYCNRM8C2ndbBmtAO
+        o1F2EwFbiso0EmtzhAPs19ujiVxkLn4=
+
+matrix:
+  include:
+      # Documentation
+    - env: BUILD=Doc
+      sudo: required
+      # g++ 6 on Linux with C++14
+    - env: COMPILER=g++-6 BUILD=Debug STANDARD=14
+      compiler: gcc
+      addons:
+        apt:
+          update: true
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-6
+    - env: COMPILER=g++-6 BUILD=Release STANDARD=14
+      compiler: gcc
+      addons:
+        apt:
+          update: true
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-6
+     # g++ 8 on Linux with C++17
+    - env: COMPILER=g++-8 BUILD=Debug STANDARD=17
+      compiler: gcc
+      addons:
+        apt:
+          update: true
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-8
+    - env: COMPILER=g++-8 BUILD=Release STANDARD=17
+      compiler: gcc
+      addons:
+        apt:
+          update: true
+          sources:
+            - ubuntu-toolchain-r-test
+          packages:
+            - g++-8
+
+      # Apple clang on OS X with C++14
+    - env: BUILD=Debug STANDARD=14
+      compiler: clang
+      os: osx
+    - env: BUILD=Release STANDARD=14
+      compiler: clang
+      os: osx
+      # clang 6.0 on Linux with C++14 (builds the fuzzers as well)
+    - env: COMPILER=clang++-6.0 BUILD=Debug STANDARD=14 ENABLE_FUZZING=1
+      compiler: clang
+      addons:
+        apt:
+          update: true
+          packages:
+            - clang-6.0
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-trusty
+            - llvm-toolchain-trusty-6.0
+      # clang 4.0 on Linux with C++14
+    - env: COMPILER=clang++-4.0 BUILD=Debug STANDARD=11
+      compiler: clang
+      addons:
+        apt:
+          update: true
+          packages:
+            - clang-4.0
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-trusty
+            - llvm-toolchain-trusty-4.0
+      # g++ 4.8 on Linux with C++11
+    - env: COMPILER=g++-4.8 BUILD=Debug STANDARD=11
+      compiler: gcc
+
+before_script:
+  - if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then export CXX=${COMPILER}; fi
+  - if [[ "${BUILD}" != "Doc" ]]; then ${CXX} --version; fi
+
+script:
+  - support/travis-build.py

externals/fmt/CMakeLists.txt

@@ -0,0 +1,332 @@
+cmake_minimum_required(VERSION 3.1.0)
+
+# Use newer policies if available, up to most recent tested version of CMake.
+if(${CMAKE_VERSION} VERSION_LESS 3.11)
+  cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
+else()
+  cmake_policy(VERSION 3.11)
+endif()
+
+# Determine if fmt is built as a subproject (using add_subdirectory)
+# or if it is the master project.
+set(MASTER_PROJECT OFF)
+if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+  set(MASTER_PROJECT ON)
+  message(STATUS "CMake version: ${CMAKE_VERSION}")
+endif ()
+
+# Joins arguments and places the results in ${result_var}.
+function(join result_var)
+  set(result )
+  foreach (arg ${ARGN})
+    set(result "${result}${arg}")
+  endforeach ()
+  set(${result_var} "${result}" PARENT_SCOPE)
+endfunction()
+
+# Sets a cache variable with a docstring joined from multiple arguments:
+#   set(<variable> <value>... CACHE <type> <docstring>...)
+# This allows splitting a long docstring for readability.
+function(set_verbose)
+  cmake_parse_arguments(SET_VERBOSE "" "" "CACHE" ${ARGN})
+  list(GET SET_VERBOSE_CACHE 0 type)
+  list(REMOVE_AT SET_VERBOSE_CACHE 0)
+  join(doc ${SET_VERBOSE_CACHE})
+  set(${SET_VERBOSE_UNPARSED_ARGUMENTS} CACHE ${type} ${doc})
+endfunction()
+
+# Set the default CMAKE_BUILD_TYPE to Release.
+# This should be done before the project command since the latter can set
+# CMAKE_BUILD_TYPE itself (it does so for nmake).
+if (MASTER_PROJECT AND NOT CMAKE_BUILD_TYPE)
+  set_verbose(CMAKE_BUILD_TYPE Release CACHE STRING
+              "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or "
+              "CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
+endif ()
+
+option(FMT_PEDANTIC "Enable extra warnings and expensive tests." OFF)
+option(FMT_WERROR "Halt the compilation with an error on compiler warnings."
+       OFF)
+
+# Options that control generation of various targets.
+option(FMT_DOC "Generate the doc target." ${MASTER_PROJECT})
+option(FMT_INSTALL "Generate the install target." ${MASTER_PROJECT})
+option(FMT_TEST "Generate the test target." ${MASTER_PROJECT})
+option(FMT_FUZZ "Generate the fuzz target." OFF)
+option(FMT_CUDA_TEST "Generate the cuda-test target." OFF)
+
+project(FMT CXX)
+
+# Get version from core.h
+file(READ include/fmt/core.h core_h)
+if (NOT core_h MATCHES "FMT_VERSION ([0-9]+)([0-9][0-9])([0-9][0-9])")
+  message(FATAL_ERROR "Cannot get FMT_VERSION from core.h.")
+endif ()
+# Use math to skip leading zeros if any.
+math(EXPR CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1})
+math(EXPR CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2})
+math(EXPR CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3})
+join(FMT_VERSION ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.
+                 ${CPACK_PACKAGE_VERSION_PATCH})
+message(STATUS "Version: ${FMT_VERSION}")
+
+message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
+
+if (NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY)
+  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+endif ()
+
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
+  "${CMAKE_CURRENT_SOURCE_DIR}/support/cmake")
+
+include(cxx14)
+include(CheckCXXCompilerFlag)
+
+list(FIND CMAKE_CXX_COMPILE_FEATURES "cxx_variadic_templates" index)
+if (${index} GREATER -1)
+  # Use cxx_variadic_templates instead of more appropriate cxx_std_11 for
+  # compatibility with older CMake versions.
+  set(FMT_REQUIRED_FEATURES cxx_variadic_templates)
+endif ()
+message(STATUS "Required features: ${FMT_REQUIRED_FEATURES}")
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+  set(PEDANTIC_COMPILE_FLAGS -pedantic-errors -Wall -Wextra -pedantic
+      -Wold-style-cast -Wundef
+      -Wredundant-decls -Wwrite-strings -Wpointer-arith
+      -Wcast-qual -Wformat=2 -Wmissing-include-dirs
+      -Wcast-align -Wnon-virtual-dtor
+      -Wctor-dtor-privacy -Wdisabled-optimization
+      -Winvalid-pch -Woverloaded-virtual
+      -Wconversion -Wswitch-enum
+      -Wno-ctor-dtor-privacy -Wno-format-nonliteral -Wno-shadow)
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.6)
+      set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wnoexcept
+         -Wno-dangling-else -Wno-unused-local-typedefs)
+  endif ()
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0)
+      set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wdouble-promotion
+          -Wtrampolines -Wzero-as-null-pointer-constant -Wuseless-cast
+          -Wvector-operation-performance -Wsized-deallocation)
+  endif ()
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0)
+      set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wshift-overflow=2
+          -Wnull-dereference -Wduplicated-cond)
+  endif ()
+  set(WERROR_FLAG -Werror)
+endif ()
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+  set(PEDANTIC_COMPILE_FLAGS -Wall -Wextra -pedantic -Wconversion
+      -Wno-sign-conversion -Wdeprecated -Wweak-vtables)
+  check_cxx_compiler_flag(-Wzero-as-null-pointer-constant HAS_NULLPTR_WARNING)
+  if (HAS_NULLPTR_WARNING)
+    set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS}
+        -Wzero-as-null-pointer-constant)
+  endif ()
+  set(WERROR_FLAG -Werror)
+endif ()
+
+if (MSVC)
+  set(PEDANTIC_COMPILE_FLAGS /W3)
+  set(WERROR_FLAG /WX)
+endif ()
+
+if (MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio")
+  # If Microsoft SDK is installed create script run-msbuild.bat that
+  # calls SetEnv.cmd to set up build environment and runs msbuild.
+  # It is useful when building Visual Studio projects with the SDK
+  # toolchain rather than Visual Studio.
+  include(FindSetEnv)
+  if (WINSDK_SETENV)
+    set(MSBUILD_SETUP "call \"${WINSDK_SETENV}\"")
+  endif ()
+  # Set FrameworkPathOverride to get rid of MSB3644 warnings.
+  join(netfxpath
+       "C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\"
+       ".NETFramework\\v4.0")
+  file(WRITE run-msbuild.bat "
+    ${MSBUILD_SETUP}
+    ${CMAKE_MAKE_PROGRAM} -p:FrameworkPathOverride=\"${netfxpath}\" %*")
+endif ()
+
+set(strtod_l_headers stdlib.h)
+if (APPLE)
+  set(strtod_l_headers ${strtod_l_headers} xlocale.h)
+endif ()
+
+include(CheckSymbolExists)
+if (WIN32)
+  check_symbol_exists(_strtod_l "${strtod_l_headers}" HAVE_STRTOD_L)
+else ()
+  check_symbol_exists(strtod_l "${strtod_l_headers}" HAVE_STRTOD_L)
+endif ()
+
+function(add_headers VAR)
+  set(headers ${${VAR}})
+  foreach (header ${ARGN})
+    set(headers ${headers} include/fmt/${header})
+  endforeach()
+  set(${VAR} ${headers} PARENT_SCOPE)
+endfunction()
+
+# Define the fmt library, its includes and the needed defines.
+add_headers(FMT_HEADERS chrono.h color.h compile.h core.h format.h format-inl.h
+                        locale.h os.h ostream.h posix.h printf.h ranges.h)
+set(FMT_SOURCES src/format.cc src/os.cc)
+
+add_library(fmt ${FMT_SOURCES} ${FMT_HEADERS} README.rst ChangeLog.rst)
+add_library(fmt::fmt ALIAS fmt)
+
+if (HAVE_STRTOD_L)
+  target_compile_definitions(fmt PUBLIC FMT_LOCALE)
+endif ()
+
+if (FMT_WERROR)
+  target_compile_options(fmt PRIVATE ${WERROR_FLAG})
+endif ()
+if (FMT_PEDANTIC)
+  target_compile_options(fmt PRIVATE ${PEDANTIC_COMPILE_FLAGS})
+endif ()
+
+target_compile_features(fmt INTERFACE ${FMT_REQUIRED_FEATURES})
+
+target_include_directories(fmt PUBLIC
+  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+  $<INSTALL_INTERFACE:include>)
+
+set(FMT_DEBUG_POSTFIX d CACHE STRING "Debug library postfix.")
+
+set_target_properties(fmt PROPERTIES
+  VERSION ${FMT_VERSION} SOVERSION ${CPACK_PACKAGE_VERSION_MAJOR}
+  DEBUG_POSTFIX "${FMT_DEBUG_POSTFIX}")
+
+# Set FMT_LIB_NAME for pkg-config fmt.pc. We cannot use the OUTPUT_NAME target
+# property because it's not set by default.
+set(FMT_LIB_NAME fmt)
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+  set(FMT_LIB_NAME ${FMT_LIB_NAME}${FMT_DEBUG_POSTFIX})
+endif ()
+
+if (BUILD_SHARED_LIBS)
+  if (UNIX AND NOT APPLE AND NOT ${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
+    # Fix rpmlint warning:
+    # unused-direct-shlib-dependency /usr/lib/libformat.so.1.1.0 /lib/libm.so.6.
+    target_link_libraries(fmt -Wl,--as-needed)
+  endif ()
+  target_compile_definitions(fmt PRIVATE FMT_EXPORT INTERFACE FMT_SHARED)
+endif ()
+if (FMT_SAFE_DURATION_CAST)
+  target_compile_definitions(fmt PUBLIC FMT_SAFE_DURATION_CAST)
+endif()
+
+add_library(fmt-header-only INTERFACE)
+add_library(fmt::fmt-header-only ALIAS fmt-header-only)
+
+target_compile_definitions(fmt-header-only INTERFACE FMT_HEADER_ONLY=1)
+target_compile_features(fmt-header-only INTERFACE ${FMT_REQUIRED_FEATURES})
+
+target_include_directories(fmt-header-only INTERFACE
+  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
+  $<INSTALL_INTERFACE:include>)
+
+# Install targets.
+if (FMT_INSTALL)
+  include(GNUInstallDirs)
+  include(CMakePackageConfigHelpers)
+  set_verbose(FMT_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/fmt CACHE STRING
+              "Installation directory for cmake files, relative to "
+              "${CMAKE_INSTALL_PREFIX}.")
+  set(version_config ${PROJECT_BINARY_DIR}/fmt-config-version.cmake)
+  set(project_config ${PROJECT_BINARY_DIR}/fmt-config.cmake)
+  set(pkgconfig ${PROJECT_BINARY_DIR}/fmt.pc)
+  set(targets_export_name fmt-targets)
+
+  set (INSTALL_TARGETS fmt)
+  if (TARGET fmt-header-only)
+    set(INSTALL_TARGETS ${INSTALL_TARGETS} fmt-header-only)
+  endif ()
+
+  set_verbose(FMT_LIB_DIR ${CMAKE_INSTALL_LIBDIR} CACHE STRING
+              "Installation directory for libraries, relative to "
+              "${CMAKE_INSTALL_PREFIX}.")
+
+  set_verbose(FMT_INC_DIR ${CMAKE_INSTALL_INCLUDEDIR}/fmt CACHE STRING
+              "Installation directory for include files, relative to "
+              "${CMAKE_INSTALL_PREFIX}.")
+
+  set_verbose(FMT_PKGCONFIG_DIR ${CMAKE_INSTALL_LIBDIR}/pkgconfig CACHE PATH
+              "Installation directory for pkgconfig (.pc) files, relative to "
+              "${CMAKE_INSTALL_PREFIX}.")
+
+  # Generate the version, config and target files into the build directory.
+  write_basic_package_version_file(
+    ${version_config}
+    VERSION ${FMT_VERSION}
+    COMPATIBILITY AnyNewerVersion)
+  configure_file(
+    "${PROJECT_SOURCE_DIR}/support/cmake/fmt.pc.in"
+    "${pkgconfig}"
+    @ONLY)
+  configure_package_config_file(
+    ${PROJECT_SOURCE_DIR}/support/cmake/fmt-config.cmake.in
+    ${project_config}
+    INSTALL_DESTINATION ${FMT_CMAKE_DIR})
+  # Use a namespace because CMake provides better diagnostics for namespaced
+  # imported targets.
+  export(TARGETS ${INSTALL_TARGETS} NAMESPACE fmt::
+         FILE ${PROJECT_BINARY_DIR}/${targets_export_name}.cmake)
+
+  # Install version, config and target files.
+  install(
+    FILES ${project_config} ${version_config}
+    DESTINATION ${FMT_CMAKE_DIR})
+  install(EXPORT ${targets_export_name} DESTINATION ${FMT_CMAKE_DIR}
+          NAMESPACE fmt::)
+
+  # Install the library and headers.
+  install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name}
+          LIBRARY DESTINATION ${FMT_LIB_DIR}
+          ARCHIVE DESTINATION ${FMT_LIB_DIR}
+          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+
+  install(FILES $<TARGET_PDB_FILE:${INSTALL_TARGETS}>
+          DESTINATION ${FMT_LIB_DIR} OPTIONAL)
+  install(FILES ${FMT_HEADERS} DESTINATION ${FMT_INC_DIR})
+  install(FILES "${pkgconfig}" DESTINATION "${FMT_PKGCONFIG_DIR}")
+endif ()
+
+if (FMT_DOC)
+  add_subdirectory(doc)
+endif ()
+
+if (FMT_TEST)
+  enable_testing()
+  add_subdirectory(test)
+endif ()
+
+# Control fuzzing independent of the unit tests.
+if (FMT_FUZZ)
+  add_subdirectory(test/fuzzing)
+endif ()
+
+set(gitignore ${PROJECT_SOURCE_DIR}/.gitignore)
+if (MASTER_PROJECT AND EXISTS ${gitignore})
+  # Get the list of ignored files from .gitignore.
+  file (STRINGS ${gitignore} lines)
+  list(REMOVE_ITEM lines /doc/html)
+  foreach (line ${lines})
+    string(REPLACE "." "[.]" line "${line}")
+    string(REPLACE "*" ".*" line "${line}")
+    set(ignored_files ${ignored_files} "${line}$" "${line}/")
+  endforeach ()
+  set(ignored_files ${ignored_files}
+    /.git /breathe /format-benchmark sphinx/ .buildinfo .doctrees)
+
+  set(CPACK_SOURCE_GENERATOR ZIP)
+  set(CPACK_SOURCE_IGNORE_FILES ${ignored_files})
+  set(CPACK_SOURCE_PACKAGE_FILE_NAME fmt-${FMT_VERSION})
+  set(CPACK_PACKAGE_NAME fmt)
+  set(CPACK_RESOURCE_FILE_README ${PROJECT_SOURCE_DIR}/README.rst)
+  include(CPack)
+endif ()

externals/fmt/CONTRIBUTING.md

@@ -0,0 +1,17 @@
+Contributing to {fmt}
+=====================
+
+By submitting a pull request or a patch, you represent that you have the right
+to license your contribution to the {fmt} project owners and the community,
+agree that your contributions are licensed under the {fmt} license, and agree
+to future changes to the licensing.
+
+All C++ code must adhere to [Google C++ Style Guide](
+https://google.github.io/styleguide/cppguide.html) with the following
+exceptions:
+
+* Exceptions are permitted
+* snake_case should be used instead of UpperCamelCase for function and type
+  names
+
+Thanks for contributing!

externals/fmt/LICENSE.rst

@@ -0,0 +1,27 @@
+Copyright (c) 2012 - present, Victor Zverovich
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+--- Optional exception to the license ---
+
+As an exception, if, as a result of your compiling your source code, portions
+of this Software are embedded into a machine-executable object form of such
+source code, you may redistribute such embedded portions in such object form
+without including the above copyright and permission notices.

externals/fmt/README.rst

@@ -0,0 +1,501 @@
+{fmt}
+=====
+
+.. image:: https://travis-ci.org/fmtlib/fmt.png?branch=master
+   :target: https://travis-ci.org/fmtlib/fmt
+
+.. image:: https://ci.appveyor.com/api/projects/status/ehjkiefde6gucy1v
+   :target: https://ci.appveyor.com/project/vitaut/fmt
+
+.. image:: https://oss-fuzz-build-logs.storage.googleapis.com/badges/libfmt.svg
+   :alt: fmt is continuously fuzzed att oss-fuzz
+   :target: https://bugs.chromium.org/p/oss-fuzz/issues/list?colspec=ID%20Type%20Component%20Status%20Proj%20Reported%20Owner%20Summary&q=proj%3Dlibfmt&can=1
+
+.. image:: https://img.shields.io/badge/stackoverflow-fmt-blue.svg
+   :alt: Ask questions at StackOverflow with the tag fmt
+   :target: https://stackoverflow.com/questions/tagged/fmt
+
+**{fmt}** is an open-source formatting library for C++.
+It can be used as a safe and fast alternative to (s)printf and iostreams.
+
+`Documentation <https://fmt.dev/latest/>`__
+
+Q&A: ask questions on `StackOverflow with the tag fmt <https://stackoverflow.com/questions/tagged/fmt>`_.
+
+Features
+--------
+
+* Replacement-based `format API <https://fmt.dev/dev/api.html>`_ with
+  positional arguments for localization.
+* `Format string syntax <https://fmt.dev/dev/syntax.html>`_ similar to the one
+  of `str.format <https://docs.python.org/3/library/stdtypes.html#str.format>`_
+  in Python.
+* Safe `printf implementation
+  <https://fmt.dev/latest/api.html#printf-formatting>`_ including
+  the POSIX extension for positional arguments.
+* Implementation of `C++20 std::format <https://en.cppreference.com/w/cpp/utility/format>`__.
+* Support for user-defined types.
+* High performance: faster than common standard library implementations of
+  `printf <https://en.cppreference.com/w/cpp/io/c/fprintf>`_ and
+  iostreams. See `Speed tests`_ and `Fast integer to string conversion in C++
+  <http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_.
+* Small code size both in terms of source code (the minimum configuration
+  consists of just three header files, ``core.h``, ``format.h`` and
+  ``format-inl.h``) and compiled code. See `Compile time and code bloat`_.
+* Reliability: the library has an extensive set of `unit tests
+  <https://github.com/fmtlib/fmt/tree/master/test>`_ and is continuously fuzzed.
+* Safety: the library is fully type safe, errors in format strings can be
+  reported at compile time, automatic memory management prevents buffer overflow
+  errors.
+* Ease of use: small self-contained code base, no external dependencies,
+  permissive MIT `license
+  <https://github.com/fmtlib/fmt/blob/master/LICENSE.rst>`_
+* `Portability <https://fmt.dev/latest/index.html#portability>`_ with
+  consistent output across platforms and support for older compilers.
+* Clean warning-free codebase even on high warning levels
+  (``-Wall -Wextra -pedantic``).
+* Support for wide strings.
+* Optional header-only configuration enabled with the ``FMT_HEADER_ONLY`` macro.
+
+See the `documentation <https://fmt.dev/latest/>`_ for more details.
+
+Examples
+--------
+
+Print ``Hello, world!`` to ``stdout``:
+
+.. code:: c++
+
+    fmt::print("Hello, {}!", "world");  // Python-like format string syntax
+    fmt::printf("Hello, %s!", "world"); // printf format string syntax
+
+Format a string and use positional arguments:
+
+.. code:: c++
+
+    std::string s = fmt::format("I'd rather be {1} than {0}.", "right", "happy");
+    // s == "I'd rather be happy than right."
+
+Check a format string at compile time:
+
+.. code:: c++
+
+    // test.cc
+    #include <fmt/format.h>
+    std::string s = format(FMT_STRING("{2}"), 42);
+
+.. code::
+
+    $ c++ -Iinclude -std=c++14 test.cc
+    ...
+    test.cc:4:17: note: in instantiation of function template specialization 'fmt::v5::format<S, int>' requested here
+    std::string s = format(FMT_STRING("{2}"), 42);
+                    ^
+    include/fmt/core.h:778:19: note: non-constexpr function 'on_error' cannot be used in a constant expression
+        ErrorHandler::on_error(message);
+                      ^
+    include/fmt/format.h:2226:16: note: in call to '&checker.context_->on_error(&"argument index out of range"[0])'
+          context_.on_error("argument index out of range");
+                   ^
+
+Use {fmt} as a safe portable replacement for ``itoa``
+(`godbolt <https://godbolt.org/g/NXmpU4>`_):
+
+.. code:: c++
+
+    fmt::memory_buffer buf;
+    format_to(buf, "{}", 42);    // replaces itoa(42, buffer, 10)
+    format_to(buf, "{:x}", 42);  // replaces itoa(42, buffer, 16)
+    // access the string with to_string(buf) or buf.data()
+
+Format objects of user-defined types via a simple `extension API
+<https://fmt.dev/latest/api.html#formatting-user-defined-types>`_:
+
+.. code:: c++
+
+    #include "fmt/format.h"
+
+    struct date {
+      int year, month, day;
+    };
+
+    template <>
+    struct fmt::formatter<date> {
+      constexpr auto parse(format_parse_context& ctx) { return ctx.begin(); }
+
+      template <typename FormatContext>
+      auto format(const date& d, FormatContext& ctx) {
+        return format_to(ctx.out(), "{}-{}-{}", d.year, d.month, d.day);
+      }
+    };
+
+    std::string s = fmt::format("The date is {}", date{2012, 12, 9});
+    // s == "The date is 2012-12-9"
+
+Create your own functions similar to `format
+<https://fmt.dev/latest/api.html#format>`_ and
+`print <https://fmt.dev/latest/api.html#print>`_
+which take arbitrary arguments (`godbolt <https://godbolt.org/g/MHjHVf>`_):
+
+.. code:: c++
+
+    // Prints formatted error message.
+    void vreport_error(const char* format, fmt::format_args args) {
+      fmt::print("Error: ");
+      fmt::vprint(format, args);
+    }
+    template <typename... Args>
+    void report_error(const char* format, const Args & ... args) {
+      vreport_error(format, fmt::make_format_args(args...));
+    }
+
+    report_error("file not found: {}", path);
+
+Note that ``vreport_error`` is not parameterized on argument types which can
+improve compile times and reduce code size compared to a fully parameterized
+version.
+
+Benchmarks
+----------
+
+Speed tests
+~~~~~~~~~~~
+
+================= ============= ===========
+Library           Method        Run Time, s
+================= ============= ===========
+libc              printf          1.04
+libc++            std::ostream    3.05
+{fmt} 6.1.1       fmt::print      0.75
+Boost Format 1.67 boost::format   7.24
+Folly Format      folly::format   2.23
+================= ============= ===========
+
+{fmt} is the fastest of the benchmarked methods, ~35% faster than ``printf``.
+
+The above results were generated by building ``tinyformat_test.cpp`` on macOS
+10.14.6 with ``clang++ -O3 -DSPEED_TEST -DHAVE_FORMAT``, and taking the best of
+three runs. In the test, the format string ``"%0.10f:%04d:%+g:%s:%p:%c:%%\n"``
+or equivalent is filled 2,000,000 times with output sent to ``/dev/null``; for
+further details refer to the `source
+<https://github.com/fmtlib/format-benchmark/blob/master/tinyformat_test.cpp>`_.
+
+{fmt} is 10x faster than ``std::ostringstream`` and ``sprintf`` on floating-point
+formatting (`dtoa-benchmark <https://github.com/fmtlib/dtoa-benchmark>`_)
+and as fast as `double-conversion <https://github.com/google/double-conversion>`_:
+
+.. image:: https://user-images.githubusercontent.com/576385/69767160-cdaca400-112f-11ea-9fc5-347c9f83caad.png
+   :target: https://fmt.dev/unknown_mac64_clang10.0.html
+
+Compile time and code bloat
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The script `bloat-test.py
+<https://github.com/fmtlib/format-benchmark/blob/master/bloat-test.py>`_
+from `format-benchmark <https://github.com/fmtlib/format-benchmark>`_
+tests compile time and code bloat for nontrivial projects.
+It generates 100 translation units and uses ``printf()`` or its alternative
+five times in each to simulate a medium sized project.  The resulting
+executable size and compile time (Apple LLVM version 8.1.0 (clang-802.0.42),
+macOS Sierra, best of three) is shown in the following tables.
+
+**Optimized build (-O3)**
+
+============= =============== ==================== ==================
+Method        Compile Time, s Executable size, KiB Stripped size, KiB
+============= =============== ==================== ==================
+printf                    2.6                   29                 26
+printf+string            16.4                   29                 26
+iostreams                31.1                   59                 55
+{fmt}                    19.0                   37                 34
+Boost Format             91.9                  226                203
+Folly Format            115.7                  101                 88
+============= =============== ==================== ==================
+
+As you can see, {fmt} has 60% less overhead in terms of resulting binary code
+size compared to iostreams and comes pretty close to ``printf``. Boost Format
+and Folly Format have the largest overheads.
+
+``printf+string`` is the same as ``printf`` but with extra ``<string>``
+include to measure the overhead of the latter.
+
+**Non-optimized build**
+
+============= =============== ==================== ==================
+Method        Compile Time, s Executable size, KiB Stripped size, KiB
+============= =============== ==================== ==================
+printf                    2.2                   33                 30
+printf+string            16.0                   33                 30
+iostreams                28.3                   56                 52
+{fmt}                    18.2                   59                 50
+Boost Format             54.1                  365                303
+Folly Format             79.9                  445                430
+============= =============== ==================== ==================
+
+``libc``, ``lib(std)c++`` and ``libfmt`` are all linked as shared libraries to
+compare formatting function overhead only. Boost Format is a
+header-only library so it doesn't provide any linkage options.
+
+Running the tests
+~~~~~~~~~~~~~~~~~
+
+Please refer to `Building the library`__ for the instructions on how to build
+the library and run the unit tests.
+
+__ https://fmt.dev/latest/usage.html#building-the-library
+
+Benchmarks reside in a separate repository,
+`format-benchmarks <https://github.com/fmtlib/format-benchmark>`_,
+so to run the benchmarks you first need to clone this repository and
+generate Makefiles with CMake::
+
+    $ git clone --recursive https://github.com/fmtlib/format-benchmark.git
+    $ cd format-benchmark
+    $ cmake .
+
+Then you can run the speed test::
+
+    $ make speed-test
+
+or the bloat test::
+
+    $ make bloat-test
+
+Projects using this library
+---------------------------
+
+* `0 A.D. <https://play0ad.com/>`_: A free, open-source, cross-platform real-time
+  strategy game
+
+* `AMPL/MP <https://github.com/ampl/mp>`_:
+  An open-source library for mathematical programming
+  
+* `AvioBook <https://www.aviobook.aero/en>`_: A comprehensive aircraft
+  operations suite
+  
+* `Celestia <https://celestia.space/>`_: Real-time 3D visualization of space
+
+* `Ceph <https://ceph.com/>`_: A scalable distributed storage system
+
+* `ccache <https://ccache.dev/>`_: A compiler cache
+
+* `CUAUV <http://cuauv.org/>`_: Cornell University's autonomous underwater
+  vehicle
+
+* `HarpyWar/pvpgn <https://github.com/pvpgn/pvpgn-server>`_:
+  Player vs Player Gaming Network with tweaks
+
+* `KBEngine <https://kbengine.org/>`_: An open-source MMOG server engine
+
+* `Keypirinha <https://keypirinha.com/>`_: A semantic launcher for Windows
+
+* `Kodi <https://kodi.tv/>`_ (formerly xbmc): Home theater software
+
+* `Lifeline <https://github.com/peter-clark/lifeline>`_: A 2D game
+
+* `Drake <https://drake.mit.edu/>`_: A planning, control, and analysis toolbox
+  for nonlinear dynamical systems (MIT)
+
+* `Envoy <https://lyft.github.io/envoy/>`_: C++ L7 proxy and communication bus
+  (Lyft)
+
+* `FiveM <https://fivem.net/>`_: a modification framework for GTA V
+
+* `MongoDB <https://mongodb.com/>`_: Distributed document database
+
+* `MongoDB Smasher <https://github.com/duckie/mongo_smasher>`_: A small tool to
+  generate randomized datasets
+
+* `OpenSpace <https://openspaceproject.com/>`_: An open-source astrovisualization
+  framework
+
+* `PenUltima Online (POL) <https://www.polserver.com/>`_:
+  An MMO server, compatible with most Ultima Online clients
+
+* `quasardb <https://www.quasardb.net/>`_: A distributed, high-performance,
+  associative database
+
+* `readpe <https://bitbucket.org/sys_dev/readpe>`_: Read Portable Executable
+
+* `redis-cerberus <https://github.com/HunanTV/redis-cerberus>`_: A Redis cluster
+  proxy
+
+* `rpclib <http://rpclib.net/>`_: A modern C++ msgpack-RPC server and client
+  library
+
+* `Saddy <https://github.com/mamontov-cpp/saddy-graphics-engine-2d>`_:
+  Small crossplatform 2D graphic engine
+
+* `Salesforce Analytics Cloud <https://www.salesforce.com/analytics-cloud/overview/>`_:
+  Business intelligence software
+
+* `Scylla <https://www.scylladb.com/>`_: A Cassandra-compatible NoSQL data store
+  that can handle 1 million transactions per second on a single server
+
+* `Seastar <http://www.seastar-project.org/>`_: An advanced, open-source C++
+  framework for high-performance server applications on modern hardware
+
+* `spdlog <https://github.com/gabime/spdlog>`_: Super fast C++ logging library
+
+* `Stellar <https://www.stellar.org/>`_: Financial platform
+
+* `Touch Surgery <https://www.touchsurgery.com/>`_: Surgery simulator
+
+* `TrinityCore <https://github.com/TrinityCore/TrinityCore>`_: Open-source
+  MMORPG framework
+
+`More... <https://github.com/search?q=fmtlib&type=Code>`_
+
+If you are aware of other projects using this library, please let me know
+by `email <mailto:victor.zverovich@gmail.com>`_ or by submitting an
+`issue <https://github.com/fmtlib/fmt/issues>`_.
+
+Motivation
+----------
+
+So why yet another formatting library?
+
+There are plenty of methods for doing this task, from standard ones like
+the printf family of function and iostreams to Boost Format and FastFormat
+libraries. The reason for creating a new library is that every existing
+solution that I found either had serious issues or didn't provide
+all the features I needed.
+
+printf
+~~~~~~
+
+The good thing about ``printf`` is that it is pretty fast and readily available
+being a part of the C standard library. The main drawback is that it
+doesn't support user-defined types. ``printf`` also has safety issues although
+they are somewhat mitigated with `__attribute__ ((format (printf, ...))
+<https://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html>`_ in GCC.
+There is a POSIX extension that adds positional arguments required for
+`i18n <https://en.wikipedia.org/wiki/Internationalization_and_localization>`_
+to ``printf`` but it is not a part of C99 and may not be available on some
+platforms.
+
+iostreams
+~~~~~~~~~
+
+The main issue with iostreams is best illustrated with an example:
+
+.. code:: c++
+
+    std::cout << std::setprecision(2) << std::fixed << 1.23456 << "\n";
+
+which is a lot of typing compared to printf:
+
+.. code:: c++
+
+    printf("%.2f\n", 1.23456);
+
+Matthew Wilson, the author of FastFormat, called this "chevron hell". iostreams
+don't support positional arguments by design.
+
+The good part is that iostreams support user-defined types and are safe although
+error handling is awkward.
+
+Boost Format
+~~~~~~~~~~~~
+
+This is a very powerful library which supports both ``printf``-like format
+strings and positional arguments. Its main drawback is performance. According to
+various benchmarks it is much slower than other methods considered here. Boost
+Format also has excessive build times and severe code bloat issues (see
+`Benchmarks`_).
+
+FastFormat
+~~~~~~~~~~
+
+This is an interesting library which is fast, safe and has positional
+arguments. However it has significant limitations, citing its author:
+
+    Three features that have no hope of being accommodated within the
+    current design are:
+
+    * Leading zeros (or any other non-space padding)
+    * Octal/hexadecimal encoding
+    * Runtime width/alignment specification
+
+It is also quite big and has a heavy dependency, STLSoft, which might be
+too restrictive for using it in some projects.
+
+Boost Spirit.Karma
+~~~~~~~~~~~~~~~~~~
+
+This is not really a formatting library but I decided to include it here for
+completeness. As iostreams, it suffers from the problem of mixing verbatim text
+with arguments. The library is pretty fast, but slower on integer formatting
+than ``fmt::format_int`` on Karma's own benchmark,
+see `Fast integer to string conversion in C++
+<http://zverovich.net/2013/09/07/integer-to-string-conversion-in-cplusplus.html>`_.
+
+FAQ
+---
+
+Q: how can I capture formatting arguments and format them later?
+
+A: use ``std::tuple``:
+
+.. code:: c++
+
+   template <typename... Args>
+   auto capture(const Args&... args) {
+     return std::make_tuple(args...);
+   }
+
+   auto print_message = [](const auto&... args) {
+     fmt::print(args...);
+   };
+
+   // Capture and store arguments:
+   auto args = capture("{} {}", 42, "foo");
+   // Do formatting:
+   std::apply(print_message, args);
+
+License
+-------
+
+{fmt} is distributed under the MIT `license
+<https://github.com/fmtlib/fmt/blob/master/LICENSE.rst>`_.
+
+The `Format String Syntax
+<https://fmt.dev/latest/syntax.html>`_
+section in the documentation is based on the one from Python `string module
+documentation <https://docs.python.org/3/library/string.html#module-string>`_
+adapted for the current library. For this reason the documentation is
+distributed under the Python Software Foundation license available in
+`doc/python-license.txt
+<https://raw.github.com/fmtlib/fmt/master/doc/python-license.txt>`_.
+It only applies if you distribute the documentation of fmt.
+
+Acknowledgments
+---------------
+
+The {fmt} library is maintained by Victor Zverovich (`vitaut
+<https://github.com/vitaut>`_) and Jonathan Müller (`foonathan
+<https://github.com/foonathan>`_) with contributions from many other people.
+See `Contributors <https://github.com/fmtlib/fmt/graphs/contributors>`_ and
+`Releases <https://github.com/fmtlib/fmt/releases>`_ for some of the names.
+Let us know if your contribution is not listed or mentioned incorrectly and
+we'll make it right.
+
+The benchmark section of this readme file and the performance tests are taken
+from the excellent `tinyformat <https://github.com/c42f/tinyformat>`_ library
+written by Chris Foster.  Boost Format library is acknowledged transitively
+since it had some influence on tinyformat.
+Some ideas used in the implementation are borrowed from `Loki
+<http://loki-lib.sourceforge.net/>`_ SafeFormat and `Diagnostic API
+<https://clang.llvm.org/doxygen/classclang_1_1Diagnostic.html>`_ in
+`Clang <https://clang.llvm.org/>`_.
+Format string syntax and the documentation are based on Python's `str.format
+<https://docs.python.org/3/library/stdtypes.html#str.format>`_.
+Thanks `Doug Turnbull <https://github.com/softwaredoug>`_ for his valuable
+comments and contribution to the design of the type-safe API and
+`Gregory Czajkowski <https://github.com/gcflymoto>`_ for implementing binary
+formatting. Thanks `Ruslan Baratov <https://github.com/ruslo>`_ for comprehensive
+`comparison of integer formatting algorithms <https://github.com/ruslo/int-dec-format-tests>`_
+and useful comments regarding performance, `Boris Kaul <https://github.com/localvoid>`_ for
+`C++ counting digits benchmark <https://github.com/localvoid/cxx-benchmark-count-digits>`_.
+Thanks to `CarterLi <https://github.com/CarterLi>`_ for contributing various
+improvements to the code.

externals/fmt/doc/CMakeLists.txt

@@ -0,0 +1,12 @@
+find_program(DOXYGEN doxygen)
+if (NOT DOXYGEN)
+  message(STATUS "Target 'doc' disabled (requires doxygen)")
+  return ()
+endif ()
+
+add_custom_target(doc
+  COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/build.py ${FMT_VERSION}
+  SOURCES api.rst syntax.rst usage.rst build.py conf.py _templates/layout.html)
+
+install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html/
+        DESTINATION share/doc/fmt OPTIONAL)

externals/fmt/doc/_static/breathe.css

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+
+/* -- breathe specific styles ----------------------------------------------- */
+
+/* So enum value descriptions are displayed inline to the item */
+.breatheenumvalues li tt + p {
+  display: inline;
+}
+
+/* So parameter descriptions are displayed inline to the item */
+.breatheparameterlist li tt + p {
+  display: inline;
+}
+
+.container .breathe-sectiondef {
+  width: inherit;
+}
+
+.github-btn {
+  border: 0;
+  overflow: hidden;
+}
+
+.jumbotron {
+  background-size: 100% 4px;
+  background-repeat: repeat-y;
+  color: white;
+  text-align: center;
+}

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+</font>
+</defs></svg> 

externals/fmt/doc/_templates/layout.html

@@ -0,0 +1,149 @@
+{% extends "!layout.html" %}
+
+{% block extrahead %}
+<meta name="description" content="Small, safe and fast formatting library">
+<meta name="keywords" content="C++, formatting, printf, string, library">
+<meta name="author" content="Victor Zverovich">
+<link rel="stylesheet" href="_static/fmt.css">
+{# Google Analytics #}
+<script>
+  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+    (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();
+    a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;
+    a.src=g;m.parentNode.insertBefore(a,m)
+  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+  ga('create', 'UA-20116650-4', 'fmtlib.net');
+  ga('send', 'pageview');
+</script>
+{% endblock %}
+
+{%- macro searchform(classes, button) %}
+<form class="{{classes}}" role="search" action="{{ pathto('search') }}"
+      method="get">
+  <div class="form-group">
+    <input type="text" name="q" class="form-control"
+           {{ 'placeholder="Search"' if not button }} >
+  </div>
+  <input type="hidden" name="check_keywords" value="yes" />
+  <input type="hidden" name="area" value="default" />
+  {% if button %}
+    <input type="submit" class="btn btn-default" value="search">
+  {% endif %}
+</form>
+{%- endmacro %}
+
+{% block header %}
+<nav class="navbar navbar-inverse">
+  <div class="tb-container">
+    <div class="row">
+      <div class="navbar-content">
+        {# Brand and toggle get grouped for better mobile display #}
+        <div class="navbar-header">
+          <button type="button" class="navbar-toggle collapsed"
+                  data-toggle="collapse" data-target=".navbar-collapse">
+            <span class="sr-only">Toggle navigation</span>
+            <span class="icon-bar"></span>
+            <span class="icon-bar"></span>
+            <span class="icon-bar"></span>
+          </button>
+          <a class="navbar-brand" href="index.html">{fmt}</a>
+        </div>
+
+        {# Collect the nav links, forms, and other content for toggling #}
+        <div class="collapse navbar-collapse">
+          <ul class="nav navbar-nav">
+            <li class="dropdown">
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown"
+                 role="button" aria-expanded="false">{{ version }}
+                <span class="caret"></span></a>
+              <ul class="dropdown-menu" role="menu">
+                {% for v in versions.split(',') %}
+                <li><a href="https://fmt.dev/{{v}}">{{v}}</a></li>
+                {% endfor %}
+              </ul>
+            </li>
+            {% for name in ['Contents', 'Usage', 'API', 'Syntax'] %}
+              {% if pagename == name.lower() %}
+              <li class="active"><a href="{{name.lower()}}.html">{{name}}
+                <span class="sr-only">(current)</span></a></li>
+              {%else%}
+              <li><a href="{{name.lower()}}.html">{{name}}</a></li>
+              {%endif%}
+            {% endfor %}
+          </ul>
+          {% if pagename != 'search' %}
+            {{ searchform('navbar-form navbar-right', False) }}
+          {%endif%}
+        </div> {# /.navbar-collapse #}
+      </div> {# /.col-md-offset-2 #}
+    </div> {# /.row #}
+  </div> {# /.tb-container #}
+</nav>
+{% if pagename == "index" %}
+{% set download_url = 'https://github.com/fmtlib/fmt/releases/download' %}
+<div class="jumbotron">
+  <div class="tb-container">
+    <h1>{fmt}</h1>
+    <p class="lead">A modern formatting library</p>
+    <div class="btn-group" role="group">
+      {% set name = 'fmt' if version.split('.')[0]|int >= 3 else 'cppformat' %}
+      <a class="btn btn-success"
+         href="{{download_url}}/{{version}}/{{name}}-{{version}}.zip">
+           <span class="glyphicon glyphicon-download"></span> Download
+      </a>
+      <button type="button" class="btn btn-success dropdown-toggle"
+        data-toggle="dropdown"><span class="caret"></span></button>
+      <ul class="dropdown-menu">
+      {% for v in versions.split(',') %}
+      {% set name = 'fmt' if v.split('.')[0]|int >= 3 else 'cppformat' %}
+        <li><a href="{{download_url}}/{{v}}/{{name}}-{{v}}.zip">Version {{v}}
+          </a></li>
+      {% endfor %}
+      </ul>
+    </div>
+  </div>
+</div>
+{% endif %}
+{% endblock %}
+
+{# Disable relbars. #}
+{% block relbar1 %}
+{% endblock %}
+{% block relbar2 %}
+{% endblock %}
+
+{% block content %}
+<div class="tb-container">
+  <div class="row">
+    {# Sidebar is currently disabled.
+    <div class="bs-sidebar">
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+          {%- block sidebarlogo %}
+          {%- if logo %}
+            <p class="logo"><a href="{{ pathto(master_doc) }}">
+              <img class="logo" src="{{ pathto('_static/' + logo, 1) }}"
+                   alt="Logo"/>
+            </a></p>
+          {%- endif %}
+          {%- endblock %}
+          {%- for sidebartemplate in sidebars %}
+          {%- include sidebartemplate %}
+          {%- endfor %}
+        </div>
+      </div>
+    </div>
+    #}
+
+    <div class="content">
+      {% block body %} {% endblock %}
+    </div>
+  </div>
+</div>
+{% endblock %}
+
+{% block footer %}
+{{ super() }}
+{# Placed at the end of the document so the pages load faster. #}
+<script src="_static/bootstrap.min.js"></script>
+{% endblock %}

externals/fmt/doc/_templates/search.html

@@ -0,0 +1,55 @@
+{#
+    basic/search.html
+    ~~~~~~~~~~~~~~~~~
+
+    Template for the search page.
+
+    :copyright: Copyright 2007-2015 by the Sphinx team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+#}
+{%- extends "layout.html" %}
+{% set title = _('Search') %}
+{% set script_files = script_files + ['_static/searchtools.js'] %}
+{% block extrahead %}
+  <script type="text/javascript">
+    jQuery(function() { Search.loadIndex("{{ pathto('searchindex.js', 1) }}"); });
+  </script>
+  {# this is used when loading the search index using $.ajax fails,
+     such as on Chrome for documents on localhost #}
+  <script type="text/javascript" id="searchindexloader"></script>
+  {{ super() }}
+{% endblock %}
+{% block body %}
+  <h1 id="search-documentation">{{ _('Search') }}</h1>
+  <div id="fallback" class="admonition warning">
+  <script type="text/javascript">$('#fallback').hide();</script>
+  <p>
+    {% trans %}Please activate JavaScript to enable the search
+    functionality.{% endtrans %}
+  </p>
+  </div>
+  <p>
+    {% trans %}From here you can search these documents. Enter your search
+    words into the box below and click "search". Note that the search
+    function will automatically search for all of the words. Pages
+    containing fewer words won't appear in the result list.{% endtrans %}
+  </p>
+  {{ searchform('form-inline', True) }}
+  {% if search_performed %}
+    <h2>{{ _('Search Results') }}</h2>
+    {% if not search_results %}
+      <p>{{ _('Your search did not match any documents. Please make sure that all words are spelled correctly and that you\'ve selected enough categories.') }}</p>
+    {% endif %}
+  {% endif %}
+  <div id="search-results">
+  {% if search_results %}
+    <ul>
+    {% for href, caption, context in search_results %}
+      <li><a href="{{ pathto(item.href) }}">{{ caption }}</a>
+        <div class="context">{{ context|e }}</div>
+      </li>
+    {% endfor %}
+    </ul>
+  {% endif %}
+  </div>
+{% endblock %}

externals/fmt/doc/api.rst

@@ -0,0 +1,450 @@
+.. _string-formatting-api:
+
+*************
+API Reference
+*************
+
+The {fmt} library API consists of the following parts:
+
+* :ref:`fmt/core.h <core-api>`: the core API providing argument handling
+  facilities and a lightweight subset of formatting functions
+* :ref:`fmt/format.h <format-api>`: the full format API providing compile-time
+  format string checks, output iterator and user-defined type support
+* :ref:`fmt/ranges.h <ranges-api>`: additional formatting support for ranges
+  and tuples
+* :ref:`fmt/chrono.h <chrono-api>`: date and time formatting
+* :ref:`fmt/ostream.h <ostream-api>`: ``std::ostream`` support
+* :ref:`fmt/printf.h <printf-api>`: ``printf`` formatting
+
+All functions and types provided by the library reside in namespace ``fmt`` and
+macros have prefix ``FMT_``.
+
+.. _core-api:
+
+Core API
+========
+
+``fmt/core.h`` defines the core API which provides argument handling facilities
+and a lightweight subset of formatting functions. In the header-only mode
+include ``fmt/format.h`` instead of ``fmt/core.h``.
+
+The following functions use :ref:`format string syntax <syntax>`
+similar to that of Python's `str.format
+<http://docs.python.org/3/library/stdtypes.html#str.format>`_.
+They take *format_str* and *args* as arguments.
+
+*format_str* is a format string that contains literal text and replacement
+fields surrounded by braces ``{}``. The fields are replaced with formatted
+arguments in the resulting string. A function taking *format_str* doesn't
+participate in an overload resolution if the latter is not a string.
+
+*args* is an argument list representing objects to be formatted.
+
+.. _format:
+
+.. doxygenfunction:: format(const S&, Args&&...)
+.. doxygenfunction:: vformat(const S&, basic_format_args<buffer_context<Char>>)
+
+.. _print:
+
+.. doxygenfunction:: print(const S&, Args&&...)
+.. doxygenfunction:: vprint(string_view, format_args)
+
+.. doxygenfunction:: print(std::FILE *, const S&, Args&&...)
+.. doxygenfunction:: vprint(std::FILE *, string_view, format_args)
+
+Named Arguments
+---------------
+
+.. doxygenfunction:: fmt::arg(const S&, const T&)
+
+Named arguments are not supported in compile-time checks at the moment.
+
+Argument Lists
+--------------
+
+.. doxygenfunction:: fmt::make_format_args(const Args&...)
+
+.. doxygenclass:: fmt::format_arg_store
+   :members:
+
+.. doxygenclass:: fmt::basic_format_args
+   :members:
+
+.. doxygenstruct:: fmt::format_args
+
+.. doxygenclass:: fmt::basic_format_arg
+   :members:
+
+Compatibility
+-------------
+
+.. doxygenclass:: fmt::basic_string_view
+   :members:
+
+.. doxygentypedef:: fmt::string_view
+.. doxygentypedef:: fmt::wstring_view
+
+Locale
+------
+
+All formatting is locale-independent by default. Use the ``'n'`` format
+specifier to insert the appropriate number separator characters from the
+locale::
+
+  #include <fmt/core.h>
+  #include <locale>
+
+  std::locale::global(std::locale("en_US.UTF-8"));
+  auto s = fmt::format("{:n}", 1000000);  // s == "1,000,000"
+
+.. _format-api:
+
+Format API
+==========
+
+``fmt/format.h`` defines the full format API providing compile-time format
+string checks, output iterator and user-defined type support.
+
+Compile-time Format String Checks
+---------------------------------
+
+Compile-time checks are supported for built-in and string types as well as
+user-defined types with ``constexpr`` ``parse`` functions in their ``formatter``
+specializations.
+
+.. doxygendefine:: FMT_STRING
+
+Formatting User-defined Types
+-----------------------------
+
+To make a user-defined type formattable, specialize the ``formatter<T>`` struct
+template and implement ``parse`` and ``format`` methods::
+
+  #include <fmt/format.h>
+
+  struct point { double x, y; };
+
+  template <>
+  struct fmt::formatter<point> {
+    // Presentation format: 'f' - fixed, 'e' - exponential.
+    char presentation = 'f';
+
+    // Parses format specifications of the form ['f' | 'e'].
+    constexpr auto parse(format_parse_context& ctx) {
+      // [ctx.begin(), ctx.end()) is a character range that contains a part of
+      // the format string starting from the format specifications to be parsed,
+      // e.g. in
+      //
+      //   fmt::format("{:f} - point of interest", point{1, 2});
+      //
+      // the range will contain "f} - point of interest". The formatter should
+      // parse specifiers until '}' or the end of the range. In this example
+      // the formatter should parse the 'f' specifier and return an iterator
+      // pointing to '}'.
+
+      // Parse the presentation format and store it in the formatter:
+      auto it = ctx.begin(), end = ctx.end();
+      if (it != end && (*it == 'f' || *it == 'e')) presentation = *it++;
+
+      // Check if reached the end of the range:
+      if (it != end && *it != '}')
+        throw format_error("invalid format");
+
+      // Return an iterator past the end of the parsed range:
+      return it;
+    }
+
+    // Formats the point p using the parsed format specification (presentation)
+    // stored in this formatter.
+    template <typename FormatContext>
+    auto format(const point& p, FormatContext& ctx) {
+      // ctx.out() is an output iterator to write to.
+      return format_to(
+          ctx.out(),
+          presentation == 'f' ? "({:.1f}, {:.1f})" : "({:.1e}, {:.1e})",
+          p.x, p.y);
+    }
+  };
+
+Then you can pass objects of type ``point`` to any formatting function::
+
+  point p = {1, 2};
+  std::string s = fmt::format("{:f}", p);
+  // s == "(1.0, 2.0)"
+
+You can also reuse existing formatters via inheritance or composition, for
+example::
+
+  enum class color {red, green, blue};
+
+  template <>
+  struct fmt::formatter<color>: formatter<string_view> {
+    // parse is inherited from formatter<string_view>.
+    template <typename FormatContext>
+    auto format(color c, FormatContext& ctx) {
+      string_view name = "unknown";
+      switch (c) {
+      case color::red:   name = "red"; break;
+      case color::green: name = "green"; break;
+      case color::blue:  name = "blue"; break;
+      }
+      return formatter<string_view>::format(name, ctx);
+    }
+  };
+
+You can also write a formatter for a hierarchy of classes::
+
+  #include <type_traits>
+  #include <fmt/format.h>
+
+  struct A {
+    virtual ~A() {}
+    virtual std::string name() const { return "A"; }
+  };
+
+  struct B : A {
+    virtual std::string name() const { return "B"; }
+  };
+
+  template <typename T>
+  struct fmt::formatter<T, std::enable_if_t<std::is_base_of<A, T>::value, char>> :
+      fmt::formatter<std::string> {
+    template <typename FormatCtx>
+    auto format(const A& a, FormatCtx& ctx) {
+      return fmt::formatter<std::string>::format(a.name(), ctx);
+    }
+  };
+
+  int main() {
+    B b;
+    A& a = b;
+    fmt::print("{}", a); // prints "B"
+  }
+
+.. doxygenclass:: fmt::basic_format_parse_context
+   :members:
+
+Output Iterator Support
+-----------------------
+
+.. doxygenfunction:: fmt::format_to(OutputIt, const S&, Args&&...)
+.. doxygenfunction:: fmt::format_to_n(OutputIt, std::size_t, string_view, Args&&...)
+.. doxygenstruct:: fmt::format_to_n_result
+   :members:
+
+Literal-based API
+-----------------
+
+The following user-defined literals are defined in ``fmt/format.h``.
+
+.. doxygenfunction:: operator""_format(const char *, std::size_t)
+
+.. doxygenfunction:: operator""_a(const char *, std::size_t)
+
+Utilities
+---------
+
+.. doxygenstruct:: fmt::is_char
+
+.. doxygentypedef:: fmt::char_t
+
+.. doxygenfunction:: fmt::formatted_size(string_view, const Args&...)
+
+.. doxygenfunction:: fmt::to_string(const T&)
+
+.. doxygenfunction:: fmt::to_wstring(const T&)
+
+.. doxygenfunction:: fmt::to_string_view(const Char *)
+
+.. doxygenfunction:: fmt::join(const Range&, string_view)
+
+.. doxygenfunction:: fmt::join(It, It, string_view)
+
+.. doxygenclass:: fmt::basic_memory_buffer
+   :protected-members:
+   :members:
+
+System Errors
+-------------
+
+fmt does not use ``errno`` to communicate errors to the user, but it may call
+system functions which set ``errno``. Users should not make any assumptions about
+the value of ``errno`` being preserved by library functions.
+
+.. doxygenclass:: fmt::system_error
+   :members:
+
+.. doxygenfunction:: fmt::format_system_error
+
+.. doxygenclass:: fmt::windows_error
+   :members:
+
+.. _formatstrings:
+
+Custom Allocators
+-----------------
+
+The {fmt} library supports custom dynamic memory allocators.
+A custom allocator class can be specified as a template argument to
+:class:`fmt::basic_memory_buffer`::
+
+    using custom_memory_buffer = 
+      fmt::basic_memory_buffer<char, fmt::inline_buffer_size, custom_allocator>;
+
+It is also possible to write a formatting function that uses a custom
+allocator::
+
+    using custom_string =
+      std::basic_string<char, std::char_traits<char>, custom_allocator>;
+
+    custom_string vformat(custom_allocator alloc, fmt::string_view format_str,
+                          fmt::format_args args) {
+      custom_memory_buffer buf(alloc);
+      fmt::vformat_to(buf, format_str, args);
+      return custom_string(buf.data(), buf.size(), alloc);
+    }
+
+    template <typename ...Args>
+    inline custom_string format(custom_allocator alloc,
+                                fmt::string_view format_str,
+                                const Args& ... args) {
+      return vformat(alloc, format_str, fmt::make_format_args(args...));
+    }
+
+The allocator will be used for the output container only. If you are using named
+arguments, the container that stores pointers to them will be allocated using
+the default allocator. Also floating-point formatting falls back on ``sprintf``
+which may do allocations.
+
+Custom Formatting of Built-in Types
+-----------------------------------
+
+It is possible to change the way arguments are formatted by providing a
+custom argument formatter class::
+
+  using arg_formatter = fmt::arg_formatter<fmt::buffer_range<char>>;
+
+  // A custom argument formatter that formats negative integers as unsigned
+  // with the ``x`` format specifier.
+  class custom_arg_formatter : public arg_formatter {
+   public:
+    custom_arg_formatter(fmt::format_context& ctx,
+                         fmt::format_parse_context* parse_ctx = nullptr,
+                         fmt::format_specs* spec = nullptr)
+      : arg_formatter(ctx, parse_ctx, spec) {}
+
+    using arg_formatter::operator();
+
+    auto operator()(int value) {
+      if (specs() && specs()->type == 'x')
+        return (*this)(static_cast<unsigned>(value)); // convert to unsigned and format
+      return arg_formatter::operator()(value);
+    }
+  };
+
+  std::string custom_vformat(fmt::string_view format_str, fmt::format_args args) {
+    fmt::memory_buffer buffer;
+    // Pass custom argument formatter as a template arg to vformat_to.
+    fmt::vformat_to<custom_arg_formatter>(buffer, format_str, args);
+    return fmt::to_string(buffer);
+  }
+
+  template <typename ...Args>
+  inline std::string custom_format(
+      fmt::string_view format_str, const Args&... args) {
+    return custom_vformat(format_str, fmt::make_format_args(args...));
+  }
+
+  std::string s = custom_format("{:x}", -42); // s == "ffffffd6"
+
+.. doxygenclass:: fmt::arg_formatter
+   :members:
+
+.. _ranges-api:
+
+Ranges and Tuple Formatting
+===========================
+
+The library also supports convenient formatting of ranges and tuples::
+
+  #include <fmt/ranges.h>
+
+  std::tuple<char, int, float> t{'a', 1, 2.0f};
+  // Prints "('a', 1, 2.0)"
+  fmt::print("{}", t);
+
+
+NOTE: currently, the overload of ``fmt::join`` for iterables exists in the main
+``format.h`` header, but expect this to change in the future.
+
+Using ``fmt::join``, you can separate tuple elements with a custom separator::
+
+  #include <fmt/ranges.h>
+
+  std::tuple<int, char> t = {1, 'a'};
+  // Prints "1, a"
+  fmt::print("{}", fmt::join(t, ", "));
+
+.. _chrono-api:
+
+Date and Time Formatting
+========================
+
+The library supports `strftime
+<http://en.cppreference.com/w/cpp/chrono/c/strftime>`_-like date and time
+formatting::
+
+  #include <fmt/chrono.h>
+
+  std::time_t t = std::time(nullptr);
+  // Prints "The date is 2016-04-29." (with the current date)
+  fmt::print("The date is {:%Y-%m-%d}.", *std::localtime(&t));
+
+The format string syntax is described in the documentation of
+`strftime <http://en.cppreference.com/w/cpp/chrono/c/strftime>`_.
+
+.. _ostream-api:
+
+``std::ostream`` Support
+========================
+
+``fmt/ostream.h`` provides ``std::ostream`` support including formatting of
+user-defined types that have overloaded ``operator<<``::
+
+  #include <fmt/ostream.h>
+
+  class date {
+    int year_, month_, day_;
+  public:
+    date(int year, int month, int day): year_(year), month_(month), day_(day) {}
+
+    friend std::ostream& operator<<(std::ostream& os, const date& d) {
+      return os << d.year_ << '-' << d.month_ << '-' << d.day_;
+    }
+  };
+
+  std::string s = fmt::format("The date is {}", date(2012, 12, 9));
+  // s == "The date is 2012-12-9"
+
+.. doxygenfunction:: print(std::basic_ostream<Char>&, const S&, Args&&...)
+
+.. _printf-api:
+
+``printf`` Formatting
+=====================
+
+The header ``fmt/printf.h`` provides ``printf``-like formatting functionality.
+The following functions use `printf format string syntax
+<http://pubs.opengroup.org/onlinepubs/009695399/functions/fprintf.html>`_ with
+the POSIX extension for positional arguments. Unlike their standard
+counterparts, the ``fmt`` functions are type-safe and throw an exception if an
+argument type doesn't match its format specification.
+
+.. doxygenfunction:: printf(const S&, const Args&...)
+
+.. doxygenfunction:: fprintf(std::FILE *, const S&, const Args&...)
+
+.. doxygenfunction:: fprintf(std::basic_ostream<Char>&, const S&, const Args&...)
+
+.. doxygenfunction:: sprintf(const S&, const Args&...)

externals/fmt/doc/basic-bootstrap/README

@@ -0,0 +1,2 @@
+Sphinx basic theme with Bootstrap support. Modifications are kept to
+a minimum to simplify integration in case of changes to Sphinx theming.

externals/fmt/doc/basic-bootstrap/layout.html

@@ -0,0 +1,206 @@
+{#
+    basic/layout.html
+    ~~~~~~~~~~~~~~~~~
+
+    Master layout template for Sphinx themes.
+
+    :copyright: Copyright 2007-2015 by the Sphinx team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+#}
+{%- block doctype -%}
+<!DOCTYPE html>
+{%- endblock %}
+{%- set reldelim1 = reldelim1 is not defined and ' &raquo;' or reldelim1 %}
+{%- set reldelim2 = reldelim2 is not defined and ' |' or reldelim2 %}
+{%- set render_sidebar = (not embedded) and (not theme_nosidebar|tobool) and
+                         (sidebars != []) %}
+{%- set url_root = pathto('', 1) %}
+{# XXX necessary? #}
+{%- if url_root == '#' %}{% set url_root = '' %}{% endif %}
+{%- if not embedded and docstitle %}
+  {%- set titlesuffix = " &mdash; "|safe + docstitle|e %}
+{%- else %}
+  {%- set titlesuffix = "" %}
+{%- endif %}
+
+{%- macro relbar() %}
+    <div class="related" role="navigation" aria-label="related navigation">
+      <h3>{{ _('Navigation') }}</h3>
+      <ul>
+        {%- for rellink in rellinks %}
+        <li class="right" {% if loop.first %}style="margin-right: 10px"{% endif %}>
+          <a href="{{ pathto(rellink[0]) }}" title="{{ rellink[1]|striptags|e }}"
+             {{ accesskey(rellink[2]) }}>{{ rellink[3] }}</a>
+          {%- if not loop.first %}{{ reldelim2 }}{% endif %}</li>
+        {%- endfor %}
+        {%- block rootrellink %}
+        <li class="nav-item nav-item-0"><a href="{{ pathto(master_doc) }}">{{ shorttitle|e }}</a>{{ reldelim1 }}</li>
+        {%- endblock %}
+        {%- for parent in parents %}
+          <li class="nav-item nav-item-{{ loop.index }}"><a href="{{ parent.link|e }}" {% if loop.last %}{{ accesskey("U") }}{% endif %}>{{ parent.title }}</a>{{ reldelim1 }}</li>
+        {%- endfor %}
+        {%- block relbaritems %} {% endblock %}
+      </ul>
+    </div>
+{%- endmacro %}
+
+{%- macro sidebar() %}
+      {%- if render_sidebar %}
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+          {%- block sidebarlogo %}
+          {%- if logo %}
+            <p class="logo"><a href="{{ pathto(master_doc) }}">
+              <img class="logo" src="{{ pathto('_static/' + logo, 1) }}" alt="Logo"/>
+            </a></p>
+          {%- endif %}
+          {%- endblock %}
+          {%- if sidebars != None %}
+            {#- new style sidebar: explicitly include/exclude templates #}
+            {%- for sidebartemplate in sidebars %}
+            {%- include sidebartemplate %}
+            {%- endfor %}
+          {%- else %}
+            {#- old style sidebars: using blocks -- should be deprecated #}
+            {%- block sidebartoc %}
+            {%- include "localtoc.html" %}
+            {%- endblock %}
+            {%- block sidebarrel %}
+            {%- include "relations.html" %}
+            {%- endblock %}
+            {%- block sidebarsourcelink %}
+            {%- include "sourcelink.html" %}
+            {%- endblock %}
+            {%- if customsidebar %}
+            {%- include customsidebar %}
+            {%- endif %}
+            {%- block sidebarsearch %}
+            {%- include "searchbox.html" %}
+            {%- endblock %}
+          {%- endif %}
+        </div>
+      </div>
+      {%- endif %}
+{%- endmacro %}
+
+{%- macro script() %}
+    <script type="text/javascript">
+      var DOCUMENTATION_OPTIONS = {
+        URL_ROOT:    '{{ url_root }}',
+        VERSION:     '{{ release|e }}',
+        COLLAPSE_INDEX: false,
+        FILE_SUFFIX: '{{ '' if no_search_suffix else file_suffix }}',
+        HAS_SOURCE:  {{ has_source|lower }},
+        SOURCELINK_SUFFIX:  '{{ sourcelink_suffix }}'
+      };
+    </script>
+    {%- for scriptfile in script_files %}
+    <script type="text/javascript" src="{{ pathto(scriptfile, 1) }}"></script>
+    {%- endfor %}
+{%- endmacro %}
+
+{%- macro css() %}
+    <link rel="stylesheet" href="{{ pathto('_static/' + style, 1) }}" type="text/css" />
+    <link rel="stylesheet" href="{{ pathto('_static/pygments.css', 1) }}" type="text/css" />
+    {%- for cssfile in css_files %}
+    <link rel="stylesheet" href="{{ pathto(cssfile, 1) }}" type="text/css" />
+    {%- endfor %}
+{%- endmacro %}
+
+<html lang="en">
+  <head>
+    <meta charset="{{ encoding }}">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    {# The above 3 meta tags *must* come first in the head; any other head content
+       must come *after* these tags. #}
+    {{ metatags }}
+    {%- block htmltitle %}
+    <title>{{ title|striptags|e }}{{ titlesuffix }}</title>
+    {%- endblock %}
+    {{ css() }}
+    {%- if not embedded %}
+    {{ script() }}
+    {%- if use_opensearch %}
+    <link rel="search" type="application/opensearchdescription+xml"
+          title="{% trans docstitle=docstitle|e %}Search within {{ docstitle }}{% endtrans %}"
+          href="{{ pathto('_static/opensearch.xml', 1) }}"/>
+    {%- endif %}
+    {%- if favicon %}
+    <link rel="shortcut icon" href="{{ pathto('_static/' + favicon, 1) }}"/>
+    {%- endif %}
+    {%- endif %}
+{%- block linktags %}
+    {%- if hasdoc('about') %}
+    <link rel="author" title="{{ _('About these documents') }}" href="{{ pathto('about') }}" />
+    {%- endif %}
+    {%- if hasdoc('genindex') %}
+    <link rel="index" title="{{ _('Index') }}" href="{{ pathto('genindex') }}" />
+    {%- endif %}
+    {%- if hasdoc('search') %}
+    <link rel="search" title="{{ _('Search') }}" href="{{ pathto('search') }}" />
+    {%- endif %}
+    {%- if hasdoc('copyright') %}
+    <link rel="copyright" title="{{ _('Copyright') }}" href="{{ pathto('copyright') }}" />
+    {%- endif %}
+    {%- if parents %}
+    <link rel="up" title="{{ parents[-1].title|striptags|e }}" href="{{ parents[-1].link|e }}" />
+    {%- endif %}
+    {%- if next %}
+    <link rel="next" title="{{ next.title|striptags|e }}" href="{{ next.link|e }}" />
+    {%- endif %}
+    {%- if prev %}
+    <link rel="prev" title="{{ prev.title|striptags|e }}" href="{{ prev.link|e }}" />
+    {%- endif %}
+{%- endblock %}
+{%- block extrahead %} {% endblock %}
+  </head>
+  <body role="document">
+{%- block header %}{% endblock %}
+
+{%- block relbar1 %}{{ relbar() }}{% endblock %}
+
+{%- block content %}
+  {%- block sidebar1 %} {# possible location for sidebar #} {% endblock %}
+
+    <div class="document">
+  {%- block document %}
+      <div class="documentwrapper">
+      {%- if render_sidebar %}
+        <div class="bodywrapper">
+      {%- endif %}
+          <div class="body" role="main">
+            {% block body %} {% endblock %}
+          </div>
+      {%- if render_sidebar %}
+        </div>
+      {%- endif %}
+      </div>
+  {%- endblock %}
+
+  {%- block sidebar2 %}{{ sidebar() }}{% endblock %}
+      <div class="clearer"></div>
+    </div>
+{%- endblock %}
+
+{%- block relbar2 %}{{ relbar() }}{% endblock %}
+
+{%- block footer %}
+    <div class="footer" role="contentinfo">
+    {%- if show_copyright %}
+      {%- if hasdoc('copyright') %}
+        {% trans path=pathto('copyright'), copyright=copyright|e %}&copy; <a href="{{ path }}">Copyright</a> {{ copyright }}.{% endtrans %}
+      {%- else %}
+        {% trans copyright=copyright|e %}&copy; Copyright {{ copyright }}.{% endtrans %}
+      {%- endif %}
+    {%- endif %}
+    {%- if last_updated %}
+      {% trans last_updated=last_updated|e %}Last updated on {{ last_updated }}.{% endtrans %}
+    {%- endif %}
+    {%- if show_sphinx %}
+      {% trans sphinx_version=sphinx_version|e %}Created using <a href="http://sphinx-doc.org/">Sphinx</a> {{ sphinx_version }}.{% endtrans %}
+    {%- endif %}
+    </div>
+{%- endblock %}
+  </body>
+</html>

externals/fmt/doc/basic-bootstrap/theme.conf

@@ -0,0 +1,2 @@
+[theme]
+inherit = basic

externals/fmt/doc/bootstrap/alerts.less

@@ -0,0 +1,73 @@
+//
+// Alerts
+// --------------------------------------------------
+
+
+// Base styles
+// -------------------------
+
+.alert {
+  padding: @alert-padding;
+  margin-bottom: @line-height-computed;
+  border: 1px solid transparent;
+  border-radius: @alert-border-radius;
+
+  // Headings for larger alerts
+  h4 {
+    margin-top: 0;
+    // Specified for the h4 to prevent conflicts of changing @headings-color
+    color: inherit;
+  }
+
+  // Provide class for links that match alerts
+  .alert-link {
+    font-weight: @alert-link-font-weight;
+  }
+
+  // Improve alignment and spacing of inner content
+  > p,
+  > ul {
+    margin-bottom: 0;
+  }
+
+  > p + p {
+    margin-top: 5px;
+  }
+}
+
+// Dismissible alerts
+//
+// Expand the right padding and account for the close button's positioning.
+
+.alert-dismissable, // The misspelled .alert-dismissable was deprecated in 3.2.0.
+.alert-dismissible {
+  padding-right: (@alert-padding + 20);
+
+  // Adjust close link position
+  .close {
+    position: relative;
+    top: -2px;
+    right: -21px;
+    color: inherit;
+  }
+}
+
+// Alternate styles
+//
+// Generate contextual modifier classes for colorizing the alert.
+
+.alert-success {
+  .alert-variant(@alert-success-bg; @alert-success-border; @alert-success-text);
+}
+
+.alert-info {
+  .alert-variant(@alert-info-bg; @alert-info-border; @alert-info-text);
+}
+
+.alert-warning {
+  .alert-variant(@alert-warning-bg; @alert-warning-border; @alert-warning-text);
+}
+
+.alert-danger {
+  .alert-variant(@alert-danger-bg; @alert-danger-border; @alert-danger-text);
+}

externals/fmt/doc/bootstrap/badges.less

@@ -0,0 +1,66 @@
+//
+// Badges
+// --------------------------------------------------
+
+
+// Base class
+.badge {
+  display: inline-block;
+  min-width: 10px;
+  padding: 3px 7px;
+  font-size: @font-size-small;
+  font-weight: @badge-font-weight;
+  color: @badge-color;
+  line-height: @badge-line-height;
+  vertical-align: baseline;
+  white-space: nowrap;
+  text-align: center;
+  background-color: @badge-bg;
+  border-radius: @badge-border-radius;
+
+  // Empty badges collapse automatically (not available in IE8)
+  &:empty {
+    display: none;
+  }
+
+  // Quick fix for badges in buttons
+  .btn & {
+    position: relative;
+    top: -1px;
+  }
+
+  .btn-xs &,
+  .btn-group-xs > .btn & {
+    top: 0;
+    padding: 1px 5px;
+  }
+
+  // Hover state, but only for links
+  a& {
+    &:hover,
+    &:focus {
+      color: @badge-link-hover-color;
+      text-decoration: none;
+      cursor: pointer;
+    }
+  }
+
+  // Account for badges in navs
+  .list-group-item.active > &,
+  .nav-pills > .active > a > & {
+    color: @badge-active-color;
+    background-color: @badge-active-bg;
+  }
+
+  .list-group-item > & {
+    float: right;
+  }
+
+  .list-group-item > & + & {
+    margin-right: 5px;
+  }
+
+  .nav-pills > li > a > & {
+    margin-left: 3px;
+  }
+}

externals/fmt/doc/bootstrap/bootstrap.less

@@ -0,0 +1,50 @@
+// Core variables and mixins
+@import "variables.less";
+@import "mixins.less";
+
+// Reset and dependencies
+@import "normalize.less";
+@import "print.less";
+@import "glyphicons.less";
+
+// Core CSS
+@import "scaffolding.less";
+@import "type.less";
+@import "code.less";
+@import "grid.less";
+@import "tables.less";
+@import "forms.less";
+@import "buttons.less";
+
+// Components
+@import "component-animations.less";
+@import "dropdowns.less";
+@import "button-groups.less";
+@import "input-groups.less";
+@import "navs.less";
+@import "navbar.less";
+@import "breadcrumbs.less";
+@import "pagination.less";
+@import "pager.less";
+@import "labels.less";
+@import "badges.less";
+@import "jumbotron.less";
+@import "thumbnails.less";
+@import "alerts.less";
+@import "progress-bars.less";
+@import "media.less";
+@import "list-group.less";
+@import "panels.less";
+@import "responsive-embed.less";
+@import "wells.less";
+@import "close.less";
+
+// Components w/ JavaScript
+@import "modals.less";
+@import "tooltip.less";
+@import "popovers.less";
+@import "carousel.less";
+
+// Utility classes
+@import "utilities.less";
+@import "responsive-utilities.less";

externals/fmt/doc/bootstrap/breadcrumbs.less

@@ -0,0 +1,26 @@
+//
+// Breadcrumbs
+// --------------------------------------------------
+
+
+.breadcrumb {
+  padding: @breadcrumb-padding-vertical @breadcrumb-padding-horizontal;
+  margin-bottom: @line-height-computed;
+  list-style: none;
+  background-color: @breadcrumb-bg;
+  border-radius: @border-radius-base;
+
+  > li {
+    display: inline-block;
+
+    + li:before {
+      content: "@{breadcrumb-separator}\00a0"; // Unicode space added since inline-block means non-collapsing white-space
+      padding: 0 5px;
+      color: @breadcrumb-color;
+    }
+  }
+
+  > .active {
+    color: @breadcrumb-active-color;
+  }
+}

externals/fmt/doc/bootstrap/button-groups.less

@@ -0,0 +1,243 @@
+//
+// Button groups
+// --------------------------------------------------
+
+// Make the div behave like a button
+.btn-group,
+.btn-group-vertical {
+  position: relative;
+  display: inline-block;
+  vertical-align: middle; // match .btn alignment given font-size hack above
+  > .btn {
+    position: relative;
+    float: left;
+    // Bring the "active" button to the front
+    &:hover,
+    &:focus,
+    &:active,
+    &.active {
+      z-index: 2;
+    }
+  }
+}
+
+// Prevent double borders when buttons are next to each other
+.btn-group {
+  .btn + .btn,
+  .btn + .btn-group,
+  .btn-group + .btn,
+  .btn-group + .btn-group {
+    margin-left: -1px;
+  }
+}
+
+// Optional: Group multiple button groups together for a toolbar
+.btn-toolbar {
+  margin-left: -5px; // Offset the first child's margin
+  &:extend(.clearfix all);
+
+  .btn-group,
+  .input-group {
+    float: left;
+  }
+  > .btn,
+  > .btn-group,
+  > .input-group {
+    margin-left: 5px;
+  }
+}
+
+.btn-group > .btn:not(:first-child):not(:last-child):not(.dropdown-toggle) {
+  border-radius: 0;
+}
+
+// Set corners individual because sometimes a single button can be in a .btn-group and we need :first-child and :last-child to both match
+.btn-group > .btn:first-child {
+  margin-left: 0;
+  &:not(:last-child):not(.dropdown-toggle) {
+    .border-right-radius(0);
+  }
+}
+// Need .dropdown-toggle since :last-child doesn't apply given a .dropdown-menu immediately after it
+.btn-group > .btn:last-child:not(:first-child),
+.btn-group > .dropdown-toggle:not(:first-child) {
+  .border-left-radius(0);
+}
+
+// Custom edits for including btn-groups within btn-groups (useful for including dropdown buttons within a btn-group)
+.btn-group > .btn-group {
+  float: left;
+}
+.btn-group > .btn-group:not(:first-child):not(:last-child) > .btn {
+  border-radius: 0;
+}
+.btn-group > .btn-group:first-child:not(:last-child) {
+  > .btn:last-child,
+  > .dropdown-toggle {
+    .border-right-radius(0);
+  }
+}
+.btn-group > .btn-group:last-child:not(:first-child) > .btn:first-child {
+  .border-left-radius(0);
+}
+
+// On active and open, don't show outline
+.btn-group .dropdown-toggle:active,
+.btn-group.open .dropdown-toggle {
+  outline: 0;
+}
+
+
+// Sizing
+//
+// Remix the default button sizing classes into new ones for easier manipulation.
+
+.btn-group-xs > .btn { &:extend(.btn-xs); }
+.btn-group-sm > .btn { &:extend(.btn-sm); }
+.btn-group-lg > .btn { &:extend(.btn-lg); }
+
+
+// Split button dropdowns
+// ----------------------
+
+// Give the line between buttons some depth
+.btn-group > .btn + .dropdown-toggle {
+  padding-left: 8px;
+  padding-right: 8px;
+}
+.btn-group > .btn-lg + .dropdown-toggle {
+  padding-left: 12px;
+  padding-right: 12px;
+}
+
+// The clickable button for toggling the menu
+// Remove the gradient and set the same inset shadow as the :active state
+.btn-group.open .dropdown-toggle {
+  .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
+
+  // Show no shadow for `.btn-link` since it has no other button styles.
+  &.btn-link {
+    .box-shadow(none);
+  }
+}
+
+
+// Reposition the caret
+.btn .caret {
+  margin-left: 0;
+}
+// Carets in other button sizes
+.btn-lg .caret {
+  border-width: @caret-width-large @caret-width-large 0;
+  border-bottom-width: 0;
+}
+// Upside down carets for .dropup
+.dropup .btn-lg .caret {
+  border-width: 0 @caret-width-large @caret-width-large;
+}
+
+
+// Vertical button groups
+// ----------------------
+
+.btn-group-vertical {
+  > .btn,
+  > .btn-group,
+  > .btn-group > .btn {
+    display: block;
+    float: none;
+    width: 100%;
+    max-width: 100%;
+  }
+
+  // Clear floats so dropdown menus can be properly placed
+  > .btn-group {
+    &:extend(.clearfix all);
+    > .btn {
+      float: none;
+    }
+  }
+
+  > .btn + .btn,
+  > .btn + .btn-group,
+  > .btn-group + .btn,
+  > .btn-group + .btn-group {
+    margin-top: -1px;
+    margin-left: 0;
+  }
+}
+
+.btn-group-vertical > .btn {
+  &:not(:first-child):not(:last-child) {
+    border-radius: 0;
+  }
+  &:first-child:not(:last-child) {
+    border-top-right-radius: @border-radius-base;
+    .border-bottom-radius(0);
+  }
+  &:last-child:not(:first-child) {
+    border-bottom-left-radius: @border-radius-base;
+    .border-top-radius(0);
+  }
+}
+.btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn {
+  border-radius: 0;
+}
+.btn-group-vertical > .btn-group:first-child:not(:last-child) {
+  > .btn:last-child,
+  > .dropdown-toggle {
+    .border-bottom-radius(0);
+  }
+}
+.btn-group-vertical > .btn-group:last-child:not(:first-child) > .btn:first-child {
+  .border-top-radius(0);
+}
+
+
+// Justified button groups
+// ----------------------
+
+.btn-group-justified {
+  display: table;
+  width: 100%;
+  table-layout: fixed;
+  border-collapse: separate;
+  > .btn,
+  > .btn-group {
+    float: none;
+    display: table-cell;
+    width: 1%;
+  }
+  > .btn-group .btn {
+    width: 100%;
+  }
+
+  > .btn-group .dropdown-menu {
+    left: auto;
+  }
+}
+
+
+// Checkbox and radio options
+//
+// In order to support the browser's form validation feedback, powered by the
+// `required` attribute, we have to "hide" the inputs via `clip`. We cannot use
+// `display: none;` or `visibility: hidden;` as that also hides the popover.
+// Simply visually hiding the inputs via `opacity` would leave them clickable in
+// certain cases which is prevented by using `clip` and `pointer-events`.
+// This way, we ensure a DOM element is visible to position the popover from.
+//
+// See https://github.com/twbs/bootstrap/pull/12794 and
+// https://github.com/twbs/bootstrap/pull/14559 for more information.
+
+[data-toggle="buttons"] {
+  > .btn,
+  > .btn-group > .btn {
+    input[type="radio"],
+    input[type="checkbox"] {
+      position: absolute;
+      clip: rect(0,0,0,0);
+      pointer-events: none;
+    }
+  }
+}

externals/fmt/doc/bootstrap/buttons.less

@@ -0,0 +1,160 @@
+//
+// Buttons
+// --------------------------------------------------
+
+
+// Base styles
+// --------------------------------------------------
+
+.btn {
+  display: inline-block;
+  margin-bottom: 0; // For input.btn
+  font-weight: @btn-font-weight;
+  text-align: center;
+  vertical-align: middle;
+  touch-action: manipulation;
+  cursor: pointer;
+  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
+  border: 1px solid transparent;
+  white-space: nowrap;
+  .button-size(@padding-base-vertical; @padding-base-horizontal; @font-size-base; @line-height-base; @border-radius-base);
+  .user-select(none);
+
+  &,
+  &:active,
+  &.active {
+    &:focus,
+    &.focus {
+      .tab-focus();
+    }
+  }
+
+  &:hover,
+  &:focus,
+  &.focus {
+    color: @btn-default-color;
+    text-decoration: none;
+  }
+
+  &:active,
+  &.active {
+    outline: 0;
+    background-image: none;
+    .box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
+  }
+
+  &.disabled,
+  &[disabled],
+  fieldset[disabled] & {
+    cursor: @cursor-disabled;
+    pointer-events: none; // Future-proof disabling of clicks
+    .opacity(.65);
+    .box-shadow(none);
+  }
+}
+
+
+// Alternate buttons
+// --------------------------------------------------
+
+.btn-default {
+  .button-variant(@btn-default-color; @btn-default-bg; @btn-default-border);
+}
+.btn-primary {
+  .button-variant(@btn-primary-color; @btn-primary-bg; @btn-primary-border);
+}
+// Success appears as green
+.btn-success {
+  .button-variant(@btn-success-color; @btn-success-bg; @btn-success-border);
+}
+// Info appears as blue-green
+.btn-info {
+  .button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
+}
+// Warning appears as orange
+.btn-warning {
+  .button-variant(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
+}
+// Danger and error appear as red
+.btn-danger {
+  .button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
+}
+
+
+// Link buttons
+// -------------------------
+
+// Make a button look and behave like a link
+.btn-link {
+  color: @link-color;
+  font-weight: normal;
+  border-radius: 0;
+
+  &,
+  &:active,
+  &.active,
+  &[disabled],
+  fieldset[disabled] & {
+    background-color: transparent;
+    .box-shadow(none);
+  }
+  &,
+  &:hover,
+  &:focus,
+  &:active {
+    border-color: transparent;
+  }
+  &:hover,
+  &:focus {
+    color: @link-hover-color;
+    text-decoration: @link-hover-decoration;
+    background-color: transparent;
+  }
+  &[disabled],
+  fieldset[disabled] & {
+    &:hover,
+    &:focus {
+      color: @btn-link-disabled-color;
+      text-decoration: none;
+    }
+  }
+}
+
+
+// Button Sizes
+// --------------------------------------------------
+
+.btn-lg {
+  // line-height: ensure even-numbered height of button next to large input
+  .button-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @border-radius-large);
+}
+.btn-sm {
+  // line-height: ensure proper height of button next to small input
+  .button-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @border-radius-small);
+}
+.btn-xs {
+  .button-size(@padding-xs-vertical; @padding-xs-horizontal; @font-size-small; @line-height-small; @border-radius-small);
+}
+
+
+// Block button
+// --------------------------------------------------
+
+.btn-block {
+  display: block;
+  width: 100%;
+}
+
+// Vertically space out multiple block buttons
+.btn-block + .btn-block {
+  margin-top: 5px;
+}
+
+// Specificity overrides
+input[type="submit"],
+input[type="reset"],
+input[type="button"] {
+  &.btn-block {
+    width: 100%;
+  }
+}

externals/fmt/doc/bootstrap/carousel.less

@@ -0,0 +1,269 @@
+//
+// Carousel
+// --------------------------------------------------
+
+
+// Wrapper for the slide container and indicators
+.carousel {
+  position: relative;
+}
+
+.carousel-inner {
+  position: relative;
+  overflow: hidden;
+  width: 100%;
+
+  > .item {
+    display: none;
+    position: relative;
+    .transition(.6s ease-in-out left);
+
+    // Account for jankitude on images
+    > img,
+    > a > img {
+      &:extend(.img-responsive);
+      line-height: 1;
+    }
+
+    // WebKit CSS3 transforms for supported devices
+    @media all and (transform-3d), (-webkit-transform-3d) {
+      .transition-transform(~'0.6s ease-in-out');
+      .backface-visibility(~'hidden');
+      .perspective(1000);
+
+      &.next,
+      &.active.right {
+        .translate3d(100%, 0, 0);
+        left: 0;
+      }
+      &.prev,
+      &.active.left {
+        .translate3d(-100%, 0, 0);
+        left: 0;
+      }
+      &.next.left,
+      &.prev.right,
+      &.active {
+        .translate3d(0, 0, 0);
+        left: 0;
+      }
+    }
+  }
+
+  > .active,
+  > .next,
+  > .prev {
+    display: block;
+  }
+
+  > .active {
+    left: 0;
+  }
+
+  > .next,
+  > .prev {
+    position: absolute;
+    top: 0;
+    width: 100%;
+  }
+
+  > .next {
+    left: 100%;
+  }
+  > .prev {
+    left: -100%;
+  }
+  > .next.left,
+  > .prev.right {
+    left: 0;
+  }
+
+  > .active.left {
+    left: -100%;
+  }
+  > .active.right {
+    left: 100%;
+  }
+
+}
+
+// Left/right controls for nav
+// ---------------------------
+
+.carousel-control {
+  position: absolute;
+  top: 0;
+  left: 0;
+  bottom: 0;
+  width: @carousel-control-width;
+  .opacity(@carousel-control-opacity);
+  font-size: @carousel-control-font-size;
+  color: @carousel-control-color;
+  text-align: center;
+  text-shadow: @carousel-text-shadow;
+  // We can't have this transition here because WebKit cancels the carousel
+  // animation if you trip this while in the middle of another animation.
+
+  // Set gradients for backgrounds
+  &.left {
+    #gradient > .horizontal(@start-color: rgba(0,0,0,.5); @end-color: rgba(0,0,0,.0001));
+  }
+  &.right {
+    left: auto;
+    right: 0;
+    #gradient > .horizontal(@start-color: rgba(0,0,0,.0001); @end-color: rgba(0,0,0,.5));
+  }
+
+  // Hover/focus state
+  &:hover,
+  &:focus {
+    outline: 0;
+    color: @carousel-control-color;
+    text-decoration: none;
+    .opacity(.9);
+  }
+
+  // Toggles
+  .icon-prev,
+  .icon-next,
+  .glyphicon-chevron-left,
+  .glyphicon-chevron-right {
+    position: absolute;
+    top: 50%;
+    z-index: 5;
+    display: inline-block;
+  }
+  .icon-prev,
+  .glyphicon-chevron-left {
+    left: 50%;
+    margin-left: -10px;
+  }
+  .icon-next,
+  .glyphicon-chevron-right {
+    right: 50%;
+    margin-right: -10px;
+  }
+  .icon-prev,
+  .icon-next {
+    width:  20px;
+    height: 20px;
+    margin-top: -10px;
+    line-height: 1;
+    font-family: serif;
+  }
+
+
+  .icon-prev {
+    &:before {
+      content: '\2039';// SINGLE LEFT-POINTING ANGLE QUOTATION MARK (U+2039)
+    }
+  }
+  .icon-next {
+    &:before {
+      content: '\203a';// SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (U+203A)
+    }
+  }
+}
+
+// Optional indicator pips
+//
+// Add an unordered list with the following class and add a list item for each
+// slide your carousel holds.
+
+.carousel-indicators {
+  position: absolute;
+  bottom: 10px;
+  left: 50%;
+  z-index: 15;
+  width: 60%;
+  margin-left: -30%;
+  padding-left: 0;
+  list-style: none;
+  text-align: center;
+
+  li {
+    display: inline-block;
+    width:  10px;
+    height: 10px;
+    margin: 1px;
+    text-indent: -999px;
+    border: 1px solid @carousel-indicator-border-color;
+    border-radius: 10px;
+    cursor: pointer;
+
+    // IE8-9 hack for event handling
+    //
+    // Internet Explorer 8-9 does not support clicks on elements without a set
+    // `background-color`. We cannot use `filter` since that's not viewed as a
+    // background color by the browser. Thus, a hack is needed.
+    // See https://developer.mozilla.org/en-US/docs/Web/Events/click#Internet_Explorer
+    //
+    // For IE8, we set solid black as it doesn't support `rgba()`. For IE9, we
+    // set alpha transparency for the best results possible.
+    background-color: #000 \9; // IE8
+    background-color: rgba(0,0,0,0); // IE9
+  }
+  .active {
+    margin: 0;
+    width:  12px;
+    height: 12px;
+    background-color: @carousel-indicator-active-bg;
+  }
+}
+
+// Optional captions
+// -----------------------------
+// Hidden by default for smaller viewports
+.carousel-caption {
+  position: absolute;
+  left: 15%;
+  right: 15%;
+  bottom: 20px;
+  z-index: 10;
+  padding-top: 20px;
+  padding-bottom: 20px;
+  color: @carousel-caption-color;
+  text-align: center;
+  text-shadow: @carousel-text-shadow;
+  & .btn {
+    text-shadow: none; // No shadow for button elements in carousel-caption
+  }
+}
+
+
+// Scale up controls for tablets and up
+@media screen and (min-width: @screen-sm-min) {
+
+  // Scale up the controls a smidge
+  .carousel-control {
+    .glyphicon-chevron-left,
+    .glyphicon-chevron-right,
+    .icon-prev,
+    .icon-next {
+      width: 30px;
+      height: 30px;
+      margin-top: -15px;
+      font-size: 30px;
+    }
+    .glyphicon-chevron-left,
+    .icon-prev {
+      margin-left: -15px;
+    }
+    .glyphicon-chevron-right,
+    .icon-next {
+      margin-right: -15px;
+    }
+  }
+
+  // Show and left align the captions
+  .carousel-caption {
+    left: 20%;
+    right: 20%;
+    padding-bottom: 30px;
+  }
+
+  // Move up the indicators
+  .carousel-indicators {
+    bottom: 20px;
+  }
+}

externals/fmt/doc/bootstrap/close.less

@@ -0,0 +1,34 @@
+//
+// Close icons
+// --------------------------------------------------
+
+
+.close {
+  float: right;
+  font-size: (@font-size-base * 1.5);
+  font-weight: @close-font-weight;
+  line-height: 1;
+  color: @close-color;
+  text-shadow: @close-text-shadow;
+  .opacity(.2);
+
+  &:hover,
+  &:focus {
+    color: @close-color;
+    text-decoration: none;
+    cursor: pointer;
+    .opacity(.5);
+  }
+
+  // Additional properties for button version
+  // iOS requires the button element instead of an anchor tag.
+  // If you want the anchor version, it requires `href="#"`.
+  // See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
+  button& {
+    padding: 0;
+    cursor: pointer;
+    background: transparent;
+    border: 0;
+    -webkit-appearance: none;
+  }
+}

externals/fmt/doc/bootstrap/code.less

@@ -0,0 +1,69 @@
+//
+// Code (inline and block)
+// --------------------------------------------------
+
+
+// Inline and block code styles
+code,
+kbd,
+pre,
+samp {
+  font-family: @font-family-monospace;
+}
+
+// Inline code
+code {
+  padding: 2px 4px;
+  font-size: 90%;
+  color: @code-color;
+  background-color: @code-bg;
+  border-radius: @border-radius-base;
+}
+
+// User input typically entered via keyboard
+kbd {
+  padding: 2px 4px;
+  font-size: 90%;
+  color: @kbd-color;
+  background-color: @kbd-bg;
+  border-radius: @border-radius-small;
+  box-shadow: inset 0 -1px 0 rgba(0,0,0,.25);
+
+  kbd {
+    padding: 0;
+    font-size: 100%;
+    font-weight: bold;
+    box-shadow: none;
+  }
+}
+
+// Blocks of code
+pre {
+  display: block;
+  padding: ((@line-height-computed - 1) / 2);
+  margin: 0 0 (@line-height-computed / 2);
+  font-size: (@font-size-base - 1); // 14px to 13px
+  line-height: @line-height-base;
+  word-break: break-all;
+  word-wrap: break-word;
+  color: @pre-color;
+  background-color: @pre-bg;
+  border: 1px solid @pre-border-color;
+  border-radius: @border-radius-base;
+
+  // Account for some code outputs that place code tags in pre tags
+  code {
+    padding: 0;
+    font-size: inherit;
+    color: inherit;
+    white-space: pre-wrap;
+    background-color: transparent;
+    border-radius: 0;
+  }
+}
+
+// Enable scrollable blocks of code
+.pre-scrollable {
+  max-height: @pre-scrollable-max-height;
+  overflow-y: scroll;
+}

externals/fmt/doc/bootstrap/component-animations.less

@@ -0,0 +1,33 @@
+//
+// Component animations
+// --------------------------------------------------
+
+// Heads up!
+//
+// We don't use the `.opacity()` mixin here since it causes a bug with text
+// fields in IE7-8. Source: https://github.com/twbs/bootstrap/pull/3552.
+
+.fade {
+  opacity: 0;
+  .transition(opacity .15s linear);
+  &.in {
+    opacity: 1;
+  }
+}
+
+.collapse {
+  display: none;
+
+  &.in      { display: block; }
+  tr&.in    { display: table-row; }
+  tbody&.in { display: table-row-group; }
+}
+
+.collapsing {
+  position: relative;
+  height: 0;
+  overflow: hidden;
+  .transition-property(~"height, visibility");
+  .transition-duration(.35s);
+  .transition-timing-function(ease);
+}

externals/fmt/doc/bootstrap/dropdowns.less

@@ -0,0 +1,214 @@
+//
+// Dropdown menus
+// --------------------------------------------------
+
+
+// Dropdown arrow/caret
+.caret {
+  display: inline-block;
+  width: 0;
+  height: 0;
+  margin-left: 2px;
+  vertical-align: middle;
+  border-top:   @caret-width-base dashed;
+  border-right: @caret-width-base solid transparent;
+  border-left:  @caret-width-base solid transparent;
+}
+
+// The dropdown wrapper (div)
+.dropup,
+.dropdown {
+  position: relative;
+}
+
+// Prevent the focus on the dropdown toggle when closing dropdowns
+.dropdown-toggle:focus {
+  outline: 0;
+}
+
+// The dropdown menu (ul)
+.dropdown-menu {
+  position: absolute;
+  top: 100%;
+  left: 0;
+  z-index: @zindex-dropdown;
+  display: none; // none by default, but block on "open" of the menu
+  float: left;
+  min-width: 160px;
+  padding: 5px 0;
+  margin: 2px 0 0; // override default ul
+  list-style: none;
+  font-size: @font-size-base;
+  text-align: left; // Ensures proper alignment if parent has it changed (e.g., modal footer)
+  background-color: @dropdown-bg;
+  border: 1px solid @dropdown-fallback-border; // IE8 fallback
+  border: 1px solid @dropdown-border;
+  border-radius: @border-radius-base;
+  .box-shadow(0 6px 12px rgba(0,0,0,.175));
+  background-clip: padding-box;
+
+  // Aligns the dropdown menu to right
+  //
+  // Deprecated as of 3.1.0 in favor of `.dropdown-menu-[dir]`
+  &.pull-right {
+    right: 0;
+    left: auto;
+  }
+
+  // Dividers (basically an hr) within the dropdown
+  .divider {
+    .nav-divider(@dropdown-divider-bg);
+  }
+
+  // Links within the dropdown menu
+  > li > a {
+    display: block;
+    padding: 3px 20px;
+    clear: both;
+    font-weight: normal;
+    line-height: @line-height-base;
+    color: @dropdown-link-color;
+    white-space: nowrap; // prevent links from randomly breaking onto new lines
+  }
+}
+
+// Hover/Focus state
+.dropdown-menu > li > a {
+  &:hover,
+  &:focus {
+    text-decoration: none;
+    color: @dropdown-link-hover-color;
+    background-color: @dropdown-link-hover-bg;
+  }
+}
+
+// Active state
+.dropdown-menu > .active > a {
+  &,
+  &:hover,
+  &:focus {
+    color: @dropdown-link-active-color;
+    text-decoration: none;
+    outline: 0;
+    background-color: @dropdown-link-active-bg;
+  }
+}
+
+// Disabled state
+//
+// Gray out text and ensure the hover/focus state remains gray
+
+.dropdown-menu > .disabled > a {
+  &,
+  &:hover,
+  &:focus {
+    color: @dropdown-link-disabled-color;
+  }
+
+  // Nuke hover/focus effects
+  &:hover,
+  &:focus {
+    text-decoration: none;
+    background-color: transparent;
+    background-image: none; // Remove CSS gradient
+    .reset-filter();
+    cursor: @cursor-disabled;
+  }
+}
+
+// Open state for the dropdown
+.open {
+  // Show the menu
+  > .dropdown-menu {
+    display: block;
+  }
+
+  // Remove the outline when :focus is triggered
+  > a {
+    outline: 0;
+  }
+}
+
+// Menu positioning
+//
+// Add extra class to `.dropdown-menu` to flip the alignment of the dropdown
+// menu with the parent.
+.dropdown-menu-right {
+  left: auto; // Reset the default from `.dropdown-menu`
+  right: 0;
+}
+// With v3, we enabled auto-flipping if you have a dropdown within a right
+// aligned nav component. To enable the undoing of that, we provide an override
+// to restore the default dropdown menu alignment.
+//
+// This is only for left-aligning a dropdown menu within a `.navbar-right` or
+// `.pull-right` nav component.
+.dropdown-menu-left {
+  left: 0;
+  right: auto;
+}
+
+// Dropdown section headers
+.dropdown-header {
+  display: block;
+  padding: 3px 20px;
+  font-size: @font-size-small;
+  line-height: @line-height-base;
+  color: @dropdown-header-color;
+  white-space: nowrap; // as with > li > a
+}
+
+// Backdrop to catch body clicks on mobile, etc.
+.dropdown-backdrop {
+  position: fixed;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  top: 0;
+  z-index: (@zindex-dropdown - 10);
+}
+
+// Right aligned dropdowns
+.pull-right > .dropdown-menu {
+  right: 0;
+  left: auto;
+}
+
+// Allow for dropdowns to go bottom up (aka, dropup-menu)
+//
+// Just add .dropup after the standard .dropdown class and you're set, bro.
+// TODO: abstract this so that the navbar fixed styles are not placed here?
+
+.dropup,
+.navbar-fixed-bottom .dropdown {
+  // Reverse the caret
+  .caret {
+    border-top: 0;
+    border-bottom: @caret-width-base solid;
+    content: "";
+  }
+  // Different positioning for bottom up menu
+  .dropdown-menu {
+    top: auto;
+    bottom: 100%;
+    margin-bottom: 2px;
+  }
+}
+
+
+// Component alignment
+//
+// Reiterate per navbar.less and the modified component alignment there.
+
+@media (min-width: @grid-float-breakpoint) {
+  .navbar-right {
+    .dropdown-menu {
+      .dropdown-menu-right();
+    }
+    // Necessary for overrides of the default right aligned menu.
+    // Will remove come v4 in all likelihood.
+    .dropdown-menu-left {
+      .dropdown-menu-left();
+    }
+  }
+}

externals/fmt/doc/bootstrap/forms.less

@@ -0,0 +1,574 @@
+//
+// Forms
+// --------------------------------------------------
+
+
+// Normalize non-controls
+//
+// Restyle and baseline non-control form elements.
+
+fieldset {
+  padding: 0;
+  margin: 0;
+  border: 0;
+  // Chrome and Firefox set a `min-width: min-content;` on fieldsets,
+  // so we reset that to ensure it behaves more like a standard block element.
+  // See https://github.com/twbs/bootstrap/issues/12359.
+  min-width: 0;
+}
+
+legend {
+  display: block;
+  width: 100%;
+  padding: 0;
+  margin-bottom: @line-height-computed;
+  font-size: (@font-size-base * 1.5);
+  line-height: inherit;
+  color: @legend-color;
+  border: 0;
+  border-bottom: 1px solid @legend-border-color;
+}
+
+label {
+  display: inline-block;
+  max-width: 100%; // Force IE8 to wrap long content (see https://github.com/twbs/bootstrap/issues/13141)
+  margin-bottom: 5px;
+  font-weight: bold;
+}
+
+
+// Normalize form controls
+//
+// While most of our form styles require extra classes, some basic normalization
+// is required to ensure optimum display with or without those classes to better
+// address browser inconsistencies.
+
+// Override content-box in Normalize (* isn't specific enough)
+input[type="search"] {
+  .box-sizing(border-box);
+}
+
+// Position radios and checkboxes better
+input[type="radio"],
+input[type="checkbox"] {
+  margin: 4px 0 0;
+  margin-top: 1px \9; // IE8-9
+  line-height: normal;
+}
+
+// Set the height of file controls to match text inputs
+input[type="file"] {
+  display: block;
+}
+
+// Make range inputs behave like textual form controls
+input[type="range"] {
+  display: block;
+  width: 100%;
+}
+
+// Make multiple select elements height not fixed
+select[multiple],
+select[size] {
+  height: auto;
+}
+
+// Focus for file, radio, and checkbox
+input[type="file"]:focus,
+input[type="radio"]:focus,
+input[type="checkbox"]:focus {
+  .tab-focus();
+}
+
+// Adjust output element
+output {
+  display: block;
+  padding-top: (@padding-base-vertical + 1);
+  font-size: @font-size-base;
+  line-height: @line-height-base;
+  color: @input-color;
+}
+
+
+// Common form controls
+//
+// Shared size and type resets for form controls. Apply `.form-control` to any
+// of the following form controls:
+//
+// select
+// textarea
+// input[type="text"]
+// input[type="password"]
+// input[type="datetime"]
+// input[type="datetime-local"]
+// input[type="date"]
+// input[type="month"]
+// input[type="time"]
+// input[type="week"]
+// input[type="number"]
+// input[type="email"]
+// input[type="url"]
+// input[type="search"]
+// input[type="tel"]
+// input[type="color"]
+
+.form-control {
+  display: block;
+  width: 100%;
+  height: @input-height-base; // Make inputs at least the height of their button counterpart (base line-height + padding + border)
+  padding: @padding-base-vertical @padding-base-horizontal;
+  font-size: @font-size-base;
+  line-height: @line-height-base;
+  color: @input-color;
+  background-color: @input-bg;
+  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
+  border: 1px solid @input-border;
+  border-radius: @input-border-radius; // Note: This has no effect on <select>s in some browsers, due to the limited stylability of <select>s in CSS.
+  .box-shadow(inset 0 1px 1px rgba(0,0,0,.075));
+  .transition(~"border-color ease-in-out .15s, box-shadow ease-in-out .15s");
+
+  // Customize the `:focus` state to imitate native WebKit styles.
+  .form-control-focus();
+
+  // Placeholder
+  .placeholder();
+
+  // Disabled and read-only inputs
+  //
+  // HTML5 says that controls under a fieldset > legend:first-child won't be
+  // disabled if the fieldset is disabled. Due to implementation difficulty, we
+  // don't honor that edge case; we style them as disabled anyway.
+  &[disabled],
+  &[readonly],
+  fieldset[disabled] & {
+    background-color: @input-bg-disabled;
+    opacity: 1; // iOS fix for unreadable disabled content; see https://github.com/twbs/bootstrap/issues/11655
+  }
+
+  &[disabled],
+  fieldset[disabled] & {
+    cursor: @cursor-disabled;
+  }
+
+  // Reset height for `textarea`s
+  textarea& {
+    height: auto;
+  }
+}
+
+
+// Search inputs in iOS
+//
+// This overrides the extra rounded corners on search inputs in iOS so that our
+// `.form-control` class can properly style them. Note that this cannot simply
+// be added to `.form-control` as it's not specific enough. For details, see
+// https://github.com/twbs/bootstrap/issues/11586.
+
+input[type="search"] {
+  -webkit-appearance: none;
+}
+
+
+// Special styles for iOS temporal inputs
+//
+// In Mobile Safari, setting `display: block` on temporal inputs causes the
+// text within the input to become vertically misaligned. As a workaround, we
+// set a pixel line-height that matches the given height of the input, but only
+// for Safari. See https://bugs.webkit.org/show_bug.cgi?id=139848
+
+@media screen and (-webkit-min-device-pixel-ratio: 0) {
+  input[type="date"],
+  input[type="time"],
+  input[type="datetime-local"],
+  input[type="month"] {
+    line-height: @input-height-base;
+
+    &.input-sm,
+    .input-group-sm & {
+      line-height: @input-height-small;
+    }
+
+    &.input-lg,
+    .input-group-lg & {
+      line-height: @input-height-large;
+    }
+  }
+}
+
+
+// Form groups
+//
+// Designed to help with the organization and spacing of vertical forms. For
+// horizontal forms, use the predefined grid classes.
+
+.form-group {
+  margin-bottom: @form-group-margin-bottom;
+}
+
+
+// Checkboxes and radios
+//
+// Indent the labels to position radios/checkboxes as hanging controls.
+
+.radio,
+.checkbox {
+  position: relative;
+  display: block;
+  margin-top: 10px;
+  margin-bottom: 10px;
+
+  label {
+    min-height: @line-height-computed; // Ensure the input doesn't jump when there is no text
+    padding-left: 20px;
+    margin-bottom: 0;
+    font-weight: normal;
+    cursor: pointer;
+  }
+}
+.radio input[type="radio"],
+.radio-inline input[type="radio"],
+.checkbox input[type="checkbox"],
+.checkbox-inline input[type="checkbox"] {
+  position: absolute;
+  margin-left: -20px;
+  margin-top: 4px \9;
+}
+
+.radio + .radio,
+.checkbox + .checkbox {
+  margin-top: -5px; // Move up sibling radios or checkboxes for tighter spacing
+}
+
+// Radios and checkboxes on same line
+.radio-inline,
+.checkbox-inline {
+  position: relative;
+  display: inline-block;
+  padding-left: 20px;
+  margin-bottom: 0;
+  vertical-align: middle;
+  font-weight: normal;
+  cursor: pointer;
+}
+.radio-inline + .radio-inline,
+.checkbox-inline + .checkbox-inline {
+  margin-top: 0;
+  margin-left: 10px; // space out consecutive inline controls
+}
+
+// Apply same disabled cursor tweak as for inputs
+// Some special care is needed because <label>s don't inherit their parent's `cursor`.
+//
+// Note: Neither radios nor checkboxes can be readonly.
+input[type="radio"],
+input[type="checkbox"] {
+  &[disabled],
+  &.disabled,
+  fieldset[disabled] & {
+    cursor: @cursor-disabled;
+  }
+}
+// These classes are used directly on <label>s
+.radio-inline,
+.checkbox-inline {
+  &.disabled,
+  fieldset[disabled] & {
+    cursor: @cursor-disabled;
+  }
+}
+// These classes are used on elements with <label> descendants
+.radio,
+.checkbox {
+  &.disabled,
+  fieldset[disabled] & {
+    label {
+      cursor: @cursor-disabled;
+    }
+  }
+}
+
+
+// Static form control text
+//
+// Apply class to a `p` element to make any string of text align with labels in
+// a horizontal form layout.
+
+.form-control-static {
+  // Size it appropriately next to real form controls
+  padding-top: (@padding-base-vertical + 1);
+  padding-bottom: (@padding-base-vertical + 1);
+  // Remove default margin from `p`
+  margin-bottom: 0;
+  min-height: (@line-height-computed + @font-size-base);
+
+  &.input-lg,
+  &.input-sm {
+    padding-left: 0;
+    padding-right: 0;
+  }
+}
+
+
+// Form control sizing
+//
+// Build on `.form-control` with modifier classes to decrease or increase the
+// height and font-size of form controls.
+//
+// The `.form-group-* form-control` variations are sadly duplicated to avoid the
+// issue documented in https://github.com/twbs/bootstrap/issues/15074.
+
+.input-sm {
+  .input-size(@input-height-small; @padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @input-border-radius-small);
+}
+.form-group-sm {
+  .form-control {
+    .input-size(@input-height-small; @padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @input-border-radius-small);
+  }
+  .form-control-static {
+    height: @input-height-small;
+    padding: @padding-small-vertical @padding-small-horizontal;
+    font-size: @font-size-small;
+    line-height: @line-height-small;
+    min-height: (@line-height-computed + @font-size-small);
+  }
+}
+
+.input-lg {
+  .input-size(@input-height-large; @padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @input-border-radius-large);
+}
+.form-group-lg {
+  .form-control {
+    .input-size(@input-height-large; @padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @input-border-radius-large);
+  }
+  .form-control-static {
+    height: @input-height-large;
+    padding: @padding-large-vertical @padding-large-horizontal;
+    font-size: @font-size-large;
+    line-height: @line-height-large;
+    min-height: (@line-height-computed + @font-size-large);
+  }
+}
+
+
+// Form control feedback states
+//
+// Apply contextual and semantic states to individual form controls.
+
+.has-feedback {
+  // Enable absolute positioning
+  position: relative;
+
+  // Ensure icons don't overlap text
+  .form-control {
+    padding-right: (@input-height-base * 1.25);
+  }
+}
+// Feedback icon (requires .glyphicon classes)
+.form-control-feedback {
+  position: absolute;
+  top: 0;
+  right: 0;
+  z-index: 2; // Ensure icon is above input groups
+  display: block;
+  width: @input-height-base;
+  height: @input-height-base;
+  line-height: @input-height-base;
+  text-align: center;
+  pointer-events: none;
+}
+.input-lg + .form-control-feedback {
+  width: @input-height-large;
+  height: @input-height-large;
+  line-height: @input-height-large;
+}
+.input-sm + .form-control-feedback {
+  width: @input-height-small;
+  height: @input-height-small;
+  line-height: @input-height-small;
+}
+
+// Feedback states
+.has-success {
+  .form-control-validation(@state-success-text; @state-success-text; @state-success-bg);
+}
+.has-warning {
+  .form-control-validation(@state-warning-text; @state-warning-text; @state-warning-bg);
+}
+.has-error {
+  .form-control-validation(@state-danger-text; @state-danger-text; @state-danger-bg);
+}
+
+// Reposition feedback icon if input has visible label above
+.has-feedback label {
+
+  & ~ .form-control-feedback {
+     top: (@line-height-computed + 5); // Height of the `label` and its margin
+  }
+  &.sr-only ~ .form-control-feedback {
+     top: 0;
+  }
+}
+
+
+// Help text
+//
+// Apply to any element you wish to create light text for placement immediately
+// below a form control. Use for general help, formatting, or instructional text.
+
+.help-block {
+  display: block; // account for any element using help-block
+  margin-top: 5px;
+  margin-bottom: 10px;
+  color: lighten(@text-color, 25%); // lighten the text some for contrast
+}
+
+
+// Inline forms
+//
+// Make forms appear inline(-block) by adding the `.form-inline` class. Inline
+// forms begin stacked on extra small (mobile) devices and then go inline when
+// viewports reach <768px.
+//
+// Requires wrapping inputs and labels with `.form-group` for proper display of
+// default HTML form controls and our custom form controls (e.g., input groups).
+//
+// Heads up! This is mixin-ed into `.navbar-form` in navbars.less.
+
+.form-inline {
+
+  // Kick in the inline
+  @media (min-width: @screen-sm-min) {
+    // Inline-block all the things for "inline"
+    .form-group {
+      display: inline-block;
+      margin-bottom: 0;
+      vertical-align: middle;
+    }
+
+    // In navbar-form, allow folks to *not* use `.form-group`
+    .form-control {
+      display: inline-block;
+      width: auto; // Prevent labels from stacking above inputs in `.form-group`
+      vertical-align: middle;
+    }
+
+    // Make static controls behave like regular ones
+    .form-control-static {
+      display: inline-block;
+    }
+
+    .input-group {
+      display: inline-table;
+      vertical-align: middle;
+
+      .input-group-addon,
+      .input-group-btn,
+      .form-control {
+        width: auto;
+      }
+    }
+
+    // Input groups need that 100% width though
+    .input-group > .form-control {
+      width: 100%;
+    }
+
+    .control-label {
+      margin-bottom: 0;
+      vertical-align: middle;
+    }
+
+    // Remove default margin on radios/checkboxes that were used for stacking, and
+    // then undo the floating of radios and checkboxes to match.
+    .radio,
+    .checkbox {
+      display: inline-block;
+      margin-top: 0;
+      margin-bottom: 0;
+      vertical-align: middle;
+
+      label {
+        padding-left: 0;
+      }
+    }
+    .radio input[type="radio"],
+    .checkbox input[type="checkbox"] {
+      position: relative;
+      margin-left: 0;
+    }
+
+    // Re-override the feedback icon.
+    .has-feedback .form-control-feedback {
+      top: 0;
+    }
+  }
+}
+
+
+// Horizontal forms
+//
+// Horizontal forms are built on grid classes and allow you to create forms with
+// labels on the left and inputs on the right.
+
+.form-horizontal {
+
+  // Consistent vertical alignment of radios and checkboxes
+  //
+  // Labels also get some reset styles, but that is scoped to a media query below.
+  .radio,
+  .checkbox,
+  .radio-inline,
+  .checkbox-inline {
+    margin-top: 0;
+    margin-bottom: 0;
+    padding-top: (@padding-base-vertical + 1); // Default padding plus a border
+  }
+  // Account for padding we're adding to ensure the alignment and of help text
+  // and other content below items
+  .radio,
+  .checkbox {
+    min-height: (@line-height-computed + (@padding-base-vertical + 1));
+  }
+
+  // Make form groups behave like rows
+  .form-group {
+    .make-row();
+  }
+
+  // Reset spacing and right align labels, but scope to media queries so that
+  // labels on narrow viewports stack the same as a default form example.
+  @media (min-width: @screen-sm-min) {
+    .control-label {
+      text-align: right;
+      margin-bottom: 0;
+      padding-top: (@padding-base-vertical + 1); // Default padding plus a border
+    }
+  }
+
+  // Validation states
+  //
+  // Reposition the icon because it's now within a grid column and columns have
+  // `position: relative;` on them. Also accounts for the grid gutter padding.
+  .has-feedback .form-control-feedback {
+    right: (@grid-gutter-width / 2);
+  }
+
+  // Form group sizes
+  //
+  // Quick utility class for applying `.input-lg` and `.input-sm` styles to the
+  // inputs and labels within a `.form-group`.
+  .form-group-lg {
+    @media (min-width: @screen-sm-min) {
+      .control-label {
+        padding-top: ((@padding-large-vertical * @line-height-large) + 1);
+      }
+    }
+  }
+  .form-group-sm {
+    @media (min-width: @screen-sm-min) {
+      .control-label {
+        padding-top: (@padding-small-vertical + 1);
+      }
+    }
+  }
+}

externals/fmt/doc/bootstrap/glyphicons.less

@@ -0,0 +1,305 @@
+//
+// Glyphicons for Bootstrap
+//
+// Since icons are fonts, they can be placed anywhere text is placed and are
+// thus automatically sized to match the surrounding child. To use, create an
+// inline element with the appropriate classes, like so:
+//
+// <a href="#"><span class="glyphicon glyphicon-star"></span> Star</a>
+
+// Import the fonts
+@font-face {
+  font-family: 'Glyphicons Halflings';
+  src: url('@{icon-font-path}@{icon-font-name}.eot');
+  src: url('@{icon-font-path}@{icon-font-name}.eot?#iefix') format('embedded-opentype'),
+       url('@{icon-font-path}@{icon-font-name}.woff2') format('woff2'),
+       url('@{icon-font-path}@{icon-font-name}.woff') format('woff'),
+       url('@{icon-font-path}@{icon-font-name}.ttf') format('truetype'),
+       url('@{icon-font-path}@{icon-font-name}.svg#@{icon-font-svg-id}') format('svg');
+}
+
+// Catchall baseclass
+.glyphicon {
+  position: relative;
+  top: 1px;
+  display: inline-block;
+  font-family: 'Glyphicons Halflings';
+  font-style: normal;
+  font-weight: normal;
+  line-height: 1;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+// Individual icons
+.glyphicon-asterisk               { &:before { content: "\2a"; } }
+.glyphicon-plus                   { &:before { content: "\2b"; } }
+.glyphicon-euro,
+.glyphicon-eur                    { &:before { content: "\20ac"; } }
+.glyphicon-minus                  { &:before { content: "\2212"; } }
+.glyphicon-cloud                  { &:before { content: "\2601"; } }
+.glyphicon-envelope               { &:before { content: "\2709"; } }
+.glyphicon-pencil                 { &:before { content: "\270f"; } }
+.glyphicon-glass                  { &:before { content: "\e001"; } }
+.glyphicon-music                  { &:before { content: "\e002"; } }
+.glyphicon-search                 { &:before { content: "\e003"; } }
+.glyphicon-heart                  { &:before { content: "\e005"; } }
+.glyphicon-star                   { &:before { content: "\e006"; } }
+.glyphicon-star-empty             { &:before { content: "\e007"; } }
+.glyphicon-user                   { &:before { content: "\e008"; } }
+.glyphicon-film                   { &:before { content: "\e009"; } }
+.glyphicon-th-large               { &:before { content: "\e010"; } }
+.glyphicon-th                     { &:before { content: "\e011"; } }
+.glyphicon-th-list                { &:before { content: "\e012"; } }
+.glyphicon-ok                     { &:before { content: "\e013"; } }
+.glyphicon-remove                 { &:before { content: "\e014"; } }
+.glyphicon-zoom-in                { &:before { content: "\e015"; } }
+.glyphicon-zoom-out               { &:before { content: "\e016"; } }
+.glyphicon-off                    { &:before { content: "\e017"; } }
+.glyphicon-signal                 { &:before { content: "\e018"; } }
+.glyphicon-cog                    { &:before { content: "\e019"; } }
+.glyphicon-trash                  { &:before { content: "\e020"; } }
+.glyphicon-home                   { &:before { content: "\e021"; } }
+.glyphicon-file                   { &:before { content: "\e022"; } }
+.glyphicon-time                   { &:before { content: "\e023"; } }
+.glyphicon-road                   { &:before { content: "\e024"; } }
+.glyphicon-download-alt           { &:before { content: "\e025"; } }
+.glyphicon-download               { &:before { content: "\e026"; } }
+.glyphicon-upload                 { &:before { content: "\e027"; } }
+.glyphicon-inbox                  { &:before { content: "\e028"; } }
+.glyphicon-play-circle            { &:before { content: "\e029"; } }
+.glyphicon-repeat                 { &:before { content: "\e030"; } }
+.glyphicon-refresh                { &:before { content: "\e031"; } }
+.glyphicon-list-alt               { &:before { content: "\e032"; } }
+.glyphicon-lock                   { &:before { content: "\e033"; } }
+.glyphicon-flag                   { &:before { content: "\e034"; } }
+.glyphicon-headphones             { &:before { content: "\e035"; } }
+.glyphicon-volume-off             { &:before { content: "\e036"; } }
+.glyphicon-volume-down            { &:before { content: "\e037"; } }
+.glyphicon-volume-up              { &:before { content: "\e038"; } }
+.glyphicon-qrcode                 { &:before { content: "\e039"; } }
+.glyphicon-barcode                { &:before { content: "\e040"; } }
+.glyphicon-tag                    { &:before { content: "\e041"; } }
+.glyphicon-tags                   { &:before { content: "\e042"; } }
+.glyphicon-book                   { &:before { content: "\e043"; } }
+.glyphicon-bookmark               { &:before { content: "\e044"; } }
+.glyphicon-print                  { &:before { content: "\e045"; } }
+.glyphicon-camera                 { &:before { content: "\e046"; } }
+.glyphicon-font                   { &:before { content: "\e047"; } }
+.glyphicon-bold                   { &:before { content: "\e048"; } }
+.glyphicon-italic                 { &:before { content: "\e049"; } }
+.glyphicon-text-height            { &:before { content: "\e050"; } }
+.glyphicon-text-width             { &:before { content: "\e051"; } }
+.glyphicon-align-left             { &:before { content: "\e052"; } }
+.glyphicon-align-center           { &:before { content: "\e053"; } }
+.glyphicon-align-right            { &:before { content: "\e054"; } }
+.glyphicon-align-justify          { &:before { content: "\e055"; } }
+.glyphicon-list                   { &:before { content: "\e056"; } }
+.glyphicon-indent-left            { &:before { content: "\e057"; } }
+.glyphicon-indent-right           { &:before { content: "\e058"; } }
+.glyphicon-facetime-video         { &:before { content: "\e059"; } }
+.glyphicon-picture                { &:before { content: "\e060"; } }
+.glyphicon-map-marker             { &:before { content: "\e062"; } }
+.glyphicon-adjust                 { &:before { content: "\e063"; } }
+.glyphicon-tint                   { &:before { content: "\e064"; } }
+.glyphicon-edit                   { &:before { content: "\e065"; } }
+.glyphicon-share                  { &:before { content: "\e066"; } }
+.glyphicon-check                  { &:before { content: "\e067"; } }
+.glyphicon-move                   { &:before { content: "\e068"; } }
+.glyphicon-step-backward          { &:before { content: "\e069"; } }
+.glyphicon-fast-backward          { &:before { content: "\e070"; } }
+.glyphicon-backward               { &:before { content: "\e071"; } }
+.glyphicon-play                   { &:before { content: "\e072"; } }
+.glyphicon-pause                  { &:before { content: "\e073"; } }
+.glyphicon-stop                   { &:before { content: "\e074"; } }
+.glyphicon-forward                { &:before { content: "\e075"; } }
+.glyphicon-fast-forward           { &:before { content: "\e076"; } }
+.glyphicon-step-forward           { &:before { content: "\e077"; } }
+.glyphicon-eject                  { &:before { content: "\e078"; } }
+.glyphicon-chevron-left           { &:before { content: "\e079"; } }
+.glyphicon-chevron-right          { &:before { content: "\e080"; } }
+.glyphicon-plus-sign              { &:before { content: "\e081"; } }
+.glyphicon-minus-sign             { &:before { content: "\e082"; } }
+.glyphicon-remove-sign            { &:before { content: "\e083"; } }
+.glyphicon-ok-sign                { &:before { content: "\e084"; } }
+.glyphicon-question-sign          { &:before { content: "\e085"; } }
+.glyphicon-info-sign              { &:before { content: "\e086"; } }
+.glyphicon-screenshot             { &:before { content: "\e087"; } }
+.glyphicon-remove-circle          { &:before { content: "\e088"; } }
+.glyphicon-ok-circle              { &:before { content: "\e089"; } }
+.glyphicon-ban-circle             { &:before { content: "\e090"; } }
+.glyphicon-arrow-left             { &:before { content: "\e091"; } }
+.glyphicon-arrow-right            { &:before { content: "\e092"; } }
+.glyphicon-arrow-up               { &:before { content: "\e093"; } }
+.glyphicon-arrow-down             { &:before { content: "\e094"; } }
+.glyphicon-share-alt              { &:before { content: "\e095"; } }
+.glyphicon-resize-full            { &:before { content: "\e096"; } }
+.glyphicon-resize-small           { &:before { content: "\e097"; } }
+.glyphicon-exclamation-sign       { &:before { content: "\e101"; } }
+.glyphicon-gift                   { &:before { content: "\e102"; } }
+.glyphicon-leaf                   { &:before { content: "\e103"; } }
+.glyphicon-fire                   { &:before { content: "\e104"; } }
+.glyphicon-eye-open               { &:before { content: "\e105"; } }
+.glyphicon-eye-close              { &:before { content: "\e106"; } }
+.glyphicon-warning-sign           { &:before { content: "\e107"; } }
+.glyphicon-plane                  { &:before { content: "\e108"; } }
+.glyphicon-calendar               { &:before { content: "\e109"; } }
+.glyphicon-random                 { &:before { content: "\e110"; } }
+.glyphicon-comment                { &:before { content: "\e111"; } }
+.glyphicon-magnet                 { &:before { content: "\e112"; } }
+.glyphicon-chevron-up             { &:before { content: "\e113"; } }
+.glyphicon-chevron-down           { &:before { content: "\e114"; } }
+.glyphicon-retweet                { &:before { content: "\e115"; } }
+.glyphicon-shopping-cart          { &:before { content: "\e116"; } }
+.glyphicon-folder-close           { &:before { content: "\e117"; } }
+.glyphicon-folder-open            { &:before { content: "\e118"; } }
+.glyphicon-resize-vertical        { &:before { content: "\e119"; } }
+.glyphicon-resize-horizontal      { &:before { content: "\e120"; } }
+.glyphicon-hdd                    { &:before { content: "\e121"; } }
+.glyphicon-bullhorn               { &:before { content: "\e122"; } }
+.glyphicon-bell                   { &:before { content: "\e123"; } }
+.glyphicon-certificate            { &:before { content: "\e124"; } }
+.glyphicon-thumbs-up              { &:before { content: "\e125"; } }
+.glyphicon-thumbs-down            { &:before { content: "\e126"; } }
+.glyphicon-hand-right             { &:before { content: "\e127"; } }
+.glyphicon-hand-left              { &:before { content: "\e128"; } }
+.glyphicon-hand-up                { &:before { content: "\e129"; } }
+.glyphicon-hand-down              { &:before { content: "\e130"; } }
+.glyphicon-circle-arrow-right     { &:before { content: "\e131"; } }
+.glyphicon-circle-arrow-left      { &:before { content: "\e132"; } }
+.glyphicon-circle-arrow-up        { &:before { content: "\e133"; } }
+.glyphicon-circle-arrow-down      { &:before { content: "\e134"; } }
+.glyphicon-globe                  { &:before { content: "\e135"; } }
+.glyphicon-wrench                 { &:before { content: "\e136"; } }
+.glyphicon-tasks                  { &:before { content: "\e137"; } }
+.glyphicon-filter                 { &:before { content: "\e138"; } }
+.glyphicon-briefcase              { &:before { content: "\e139"; } }
+.glyphicon-fullscreen             { &:before { content: "\e140"; } }
+.glyphicon-dashboard              { &:before { content: "\e141"; } }
+.glyphicon-paperclip              { &:before { content: "\e142"; } }
+.glyphicon-heart-empty            { &:before { content: "\e143"; } }
+.glyphicon-link                   { &:before { content: "\e144"; } }
+.glyphicon-phone                  { &:before { content: "\e145"; } }
+.glyphicon-pushpin                { &:before { content: "\e146"; } }
+.glyphicon-usd                    { &:before { content: "\e148"; } }
+.glyphicon-gbp                    { &:before { content: "\e149"; } }
+.glyphicon-sort                   { &:before { content: "\e150"; } }
+.glyphicon-sort-by-alphabet       { &:before { content: "\e151"; } }
+.glyphicon-sort-by-alphabet-alt   { &:before { content: "\e152"; } }
+.glyphicon-sort-by-order          { &:before { content: "\e153"; } }
+.glyphicon-sort-by-order-alt      { &:before { content: "\e154"; } }
+.glyphicon-sort-by-attributes     { &:before { content: "\e155"; } }
+.glyphicon-sort-by-attributes-alt { &:before { content: "\e156"; } }
+.glyphicon-unchecked              { &:before { content: "\e157"; } }
+.glyphicon-expand                 { &:before { content: "\e158"; } }
+.glyphicon-collapse-down          { &:before { content: "\e159"; } }
+.glyphicon-collapse-up            { &:before { content: "\e160"; } }
+.glyphicon-log-in                 { &:before { content: "\e161"; } }
+.glyphicon-flash                  { &:before { content: "\e162"; } }
+.glyphicon-log-out                { &:before { content: "\e163"; } }
+.glyphicon-new-window             { &:before { content: "\e164"; } }
+.glyphicon-record                 { &:before { content: "\e165"; } }
+.glyphicon-save                   { &:before { content: "\e166"; } }
+.glyphicon-open                   { &:before { content: "\e167"; } }
+.glyphicon-saved                  { &:before { content: "\e168"; } }
+.glyphicon-import                 { &:before { content: "\e169"; } }
+.glyphicon-export                 { &:before { content: "\e170"; } }
+.glyphicon-send                   { &:before { content: "\e171"; } }
+.glyphicon-floppy-disk            { &:before { content: "\e172"; } }
+.glyphicon-floppy-saved           { &:before { content: "\e173"; } }
+.glyphicon-floppy-remove          { &:before { content: "\e174"; } }
+.glyphicon-floppy-save            { &:before { content: "\e175"; } }
+.glyphicon-floppy-open            { &:before { content: "\e176"; } }
+.glyphicon-credit-card            { &:before { content: "\e177"; } }
+.glyphicon-transfer               { &:before { content: "\e178"; } }
+.glyphicon-cutlery                { &:before { content: "\e179"; } }
+.glyphicon-header                 { &:before { content: "\e180"; } }
+.glyphicon-compressed             { &:before { content: "\e181"; } }
+.glyphicon-earphone               { &:before { content: "\e182"; } }
+.glyphicon-phone-alt              { &:before { content: "\e183"; } }
+.glyphicon-tower                  { &:before { content: "\e184"; } }
+.glyphicon-stats                  { &:before { content: "\e185"; } }
+.glyphicon-sd-video               { &:before { content: "\e186"; } }
+.glyphicon-hd-video               { &:before { content: "\e187"; } }
+.glyphicon-subtitles              { &:before { content: "\e188"; } }
+.glyphicon-sound-stereo           { &:before { content: "\e189"; } }
+.glyphicon-sound-dolby            { &:before { content: "\e190"; } }
+.glyphicon-sound-5-1              { &:before { content: "\e191"; } }
+.glyphicon-sound-6-1              { &:before { content: "\e192"; } }
+.glyphicon-sound-7-1              { &:before { content: "\e193"; } }
+.glyphicon-copyright-mark         { &:before { content: "\e194"; } }
+.glyphicon-registration-mark      { &:before { content: "\e195"; } }
+.glyphicon-cloud-download         { &:before { content: "\e197"; } }
+.glyphicon-cloud-upload           { &:before { content: "\e198"; } }
+.glyphicon-tree-conifer           { &:before { content: "\e199"; } }
+.glyphicon-tree-deciduous         { &:before { content: "\e200"; } }
+.glyphicon-cd                     { &:before { content: "\e201"; } }
+.glyphicon-save-file              { &:before { content: "\e202"; } }
+.glyphicon-open-file              { &:before { content: "\e203"; } }
+.glyphicon-level-up               { &:before { content: "\e204"; } }
+.glyphicon-copy                   { &:before { content: "\e205"; } }
+.glyphicon-paste                  { &:before { content: "\e206"; } }
+// The following 2 Glyphicons are omitted for the time being because
+// they currently use Unicode codepoints that are outside the
+// Basic Multilingual Plane (BMP). Older buggy versions of WebKit can't handle
+// non-BMP codepoints in CSS string escapes, and thus can't display these two icons.
+// Notably, the bug affects some older versions of the Android Browser.
+// More info: https://github.com/twbs/bootstrap/issues/10106
+// .glyphicon-door                   { &:before { content: "\1f6aa"; } }
+// .glyphicon-key                    { &:before { content: "\1f511"; } }
+.glyphicon-alert                  { &:before { content: "\e209"; } }
+.glyphicon-equalizer              { &:before { content: "\e210"; } }
+.glyphicon-king                   { &:before { content: "\e211"; } }
+.glyphicon-queen                  { &:before { content: "\e212"; } }
+.glyphicon-pawn                   { &:before { content: "\e213"; } }
+.glyphicon-bishop                 { &:before { content: "\e214"; } }
+.glyphicon-knight                 { &:before { content: "\e215"; } }
+.glyphicon-baby-formula           { &:before { content: "\e216"; } }
+.glyphicon-tent                   { &:before { content: "\26fa"; } }
+.glyphicon-blackboard             { &:before { content: "\e218"; } }
+.glyphicon-bed                    { &:before { content: "\e219"; } }
+.glyphicon-apple                  { &:before { content: "\f8ff"; } }
+.glyphicon-erase                  { &:before { content: "\e221"; } }
+.glyphicon-hourglass              { &:before { content: "\231b"; } }
+.glyphicon-lamp                   { &:before { content: "\e223"; } }
+.glyphicon-duplicate              { &:before { content: "\e224"; } }
+.glyphicon-piggy-bank             { &:before { content: "\e225"; } }
+.glyphicon-scissors               { &:before { content: "\e226"; } }
+.glyphicon-bitcoin                { &:before { content: "\e227"; } }
+.glyphicon-btc                    { &:before { content: "\e227"; } }
+.glyphicon-xbt                    { &:before { content: "\e227"; } }
+.glyphicon-yen                    { &:before { content: "\00a5"; } }
+.glyphicon-jpy                    { &:before { content: "\00a5"; } }
+.glyphicon-ruble                  { &:before { content: "\20bd"; } }
+.glyphicon-rub                    { &:before { content: "\20bd"; } }
+.glyphicon-scale                  { &:before { content: "\e230"; } }
+.glyphicon-ice-lolly              { &:before { content: "\e231"; } }
+.glyphicon-ice-lolly-tasted       { &:before { content: "\e232"; } }
+.glyphicon-education              { &:before { content: "\e233"; } }
+.glyphicon-option-horizontal      { &:before { content: "\e234"; } }
+.glyphicon-option-vertical        { &:before { content: "\e235"; } }
+.glyphicon-menu-hamburger         { &:before { content: "\e236"; } }
+.glyphicon-modal-window           { &:before { content: "\e237"; } }
+.glyphicon-oil                    { &:before { content: "\e238"; } }
+.glyphicon-grain                  { &:before { content: "\e239"; } }
+.glyphicon-sunglasses             { &:before { content: "\e240"; } }
+.glyphicon-text-size              { &:before { content: "\e241"; } }
+.glyphicon-text-color             { &:before { content: "\e242"; } }
+.glyphicon-text-background        { &:before { content: "\e243"; } }
+.glyphicon-object-align-top       { &:before { content: "\e244"; } }
+.glyphicon-object-align-bottom    { &:before { content: "\e245"; } }
+.glyphicon-object-align-horizontal{ &:before { content: "\e246"; } }
+.glyphicon-object-align-left      { &:before { content: "\e247"; } }
+.glyphicon-object-align-vertical  { &:before { content: "\e248"; } }
+.glyphicon-object-align-right     { &:before { content: "\e249"; } }
+.glyphicon-triangle-right         { &:before { content: "\e250"; } }
+.glyphicon-triangle-left          { &:before { content: "\e251"; } }
+.glyphicon-triangle-bottom        { &:before { content: "\e252"; } }
+.glyphicon-triangle-top           { &:before { content: "\e253"; } }
+.glyphicon-console                { &:before { content: "\e254"; } }
+.glyphicon-superscript            { &:before { content: "\e255"; } }
+.glyphicon-subscript              { &:before { content: "\e256"; } }
+.glyphicon-menu-left              { &:before { content: "\e257"; } }
+.glyphicon-menu-right             { &:before { content: "\e258"; } }
+.glyphicon-menu-down              { &:before { content: "\e259"; } }
+.glyphicon-menu-up                { &:before { content: "\e260"; } }

externals/fmt/doc/bootstrap/grid.less

@@ -0,0 +1,84 @@
+//
+// Grid system
+// --------------------------------------------------
+
+
+// Container widths
+//
+// Set the container width, and override it for fixed navbars in media queries.
+
+.tb-container {
+  .container-fixed();
+
+  @media (min-width: @screen-sm-min) {
+    width: @container-sm;
+  }
+  @media (min-width: @screen-md-min) {
+    width: @container-md;
+  }
+  @media (min-width: @screen-lg-min) {
+    width: @container-lg;
+  }
+}
+
+
+// Fluid container
+//
+// Utilizes the mixin meant for fixed width containers, but without any defined
+// width for fluid, full width layouts.
+
+.container-fluid {
+  .container-fixed();
+}
+
+
+// Row
+//
+// Rows contain and clear the floats of your columns.
+
+.row {
+  .make-row();
+}
+
+
+// Columns
+//
+// Common styles for small and large grid columns
+
+.make-grid-columns();
+
+
+// Extra small grid
+//
+// Columns, offsets, pushes, and pulls for extra small devices like
+// smartphones.
+
+.make-grid(xs);
+
+
+// Small grid
+//
+// Columns, offsets, pushes, and pulls for the small device range, from phones
+// to tablets.
+
+@media (min-width: @screen-sm-min) {
+  .make-grid(sm);
+}
+
+
+// Medium grid
+//
+// Columns, offsets, pushes, and pulls for the desktop device range.
+
+@media (min-width: @screen-md-min) {
+  .make-grid(md);
+}
+
+
+// Large grid
+//
+// Columns, offsets, pushes, and pulls for the large desktop device range.
+
+@media (min-width: @screen-lg-min) {
+  .make-grid(lg);
+}

externals/fmt/doc/bootstrap/input-groups.less

@@ -0,0 +1,166 @@
+//
+// Input groups
+// --------------------------------------------------
+
+// Base styles
+// -------------------------
+.input-group {
+  position: relative; // For dropdowns
+  display: table;
+  border-collapse: separate; // prevent input groups from inheriting border styles from table cells when placed within a table
+
+  // Undo padding and float of grid classes
+  &[class*="col-"] {
+    float: none;
+    padding-left: 0;
+    padding-right: 0;
+  }
+
+  .form-control {
+    // Ensure that the input is always above the *appended* addon button for
+    // proper border colors.
+    position: relative;
+    z-index: 2;
+
+    // IE9 fubars the placeholder attribute in text inputs and the arrows on
+    // select elements in input groups. To fix it, we float the input. Details:
+    // https://github.com/twbs/bootstrap/issues/11561#issuecomment-28936855
+    float: left;
+
+    width: 100%;
+    margin-bottom: 0;
+  }
+}
+
+// Sizing options
+//
+// Remix the default form control sizing classes into new ones for easier
+// manipulation.
+
+.input-group-lg > .form-control,
+.input-group-lg > .input-group-addon,
+.input-group-lg > .input-group-btn > .btn {
+  .input-lg();
+}
+.input-group-sm > .form-control,
+.input-group-sm > .input-group-addon,
+.input-group-sm > .input-group-btn > .btn {
+  .input-sm();
+}
+
+
+// Display as table-cell
+// -------------------------
+.input-group-addon,
+.input-group-btn,
+.input-group .form-control {
+  display: table-cell;
+
+  &:not(:first-child):not(:last-child) {
+    border-radius: 0;
+  }
+}
+// Addon and addon wrapper for buttons
+.input-group-addon,
+.input-group-btn {
+  width: 1%;
+  white-space: nowrap;
+  vertical-align: middle; // Match the inputs
+}
+
+// Text input groups
+// -------------------------
+.input-group-addon {
+  padding: @padding-base-vertical @padding-base-horizontal;
+  font-size: @font-size-base;
+  font-weight: normal;
+  line-height: 1;
+  color: @input-color;
+  text-align: center;
+  background-color: @input-group-addon-bg;
+  border: 1px solid @input-group-addon-border-color;
+  border-radius: @border-radius-base;
+
+  // Sizing
+  &.input-sm {
+    padding: @padding-small-vertical @padding-small-horizontal;
+    font-size: @font-size-small;
+    border-radius: @border-radius-small;
+  }
+  &.input-lg {
+    padding: @padding-large-vertical @padding-large-horizontal;
+    font-size: @font-size-large;
+    border-radius: @border-radius-large;
+  }
+
+  // Nuke default margins from checkboxes and radios to vertically center within.
+  input[type="radio"],
+  input[type="checkbox"] {
+    margin-top: 0;
+  }
+}
+
+// Reset rounded corners
+.input-group .form-control:first-child,
+.input-group-addon:first-child,
+.input-group-btn:first-child > .btn,
+.input-group-btn:first-child > .btn-group > .btn,
+.input-group-btn:first-child > .dropdown-toggle,
+.input-group-btn:last-child > .btn:not(:last-child):not(.dropdown-toggle),
+.input-group-btn:last-child > .btn-group:not(:last-child) > .btn {
+  .border-right-radius(0);
+}
+.input-group-addon:first-child {
+  border-right: 0;
+}
+.input-group .form-control:last-child,
+.input-group-addon:last-child,
+.input-group-btn:last-child > .btn,
+.input-group-btn:last-child > .btn-group > .btn,
+.input-group-btn:last-child > .dropdown-toggle,
+.input-group-btn:first-child > .btn:not(:first-child),
+.input-group-btn:first-child > .btn-group:not(:first-child) > .btn {
+  .border-left-radius(0);
+}
+.input-group-addon:last-child {
+  border-left: 0;
+}
+
+// Button input groups
+// -------------------------
+.input-group-btn {
+  position: relative;
+  // Jankily prevent input button groups from wrapping with `white-space` and
+  // `font-size` in combination with `inline-block` on buttons.
+  font-size: 0;
+  white-space: nowrap;
+
+  // Negative margin for spacing, position for bringing hovered/focused/actived
+  // element above the siblings.
+  > .btn {
+    position: relative;
+    + .btn {
+      margin-left: -1px;
+    }
+    // Bring the "active" button to the front
+    &:hover,
+    &:focus,
+    &:active {
+      z-index: 2;
+    }
+  }
+
+  // Negative margin to only have a 1px border between the two
+  &:first-child {
+    > .btn,
+    > .btn-group {
+      margin-right: -1px;
+    }
+  }
+  &:last-child {
+    > .btn,
+    > .btn-group {
+      margin-left: -1px;
+    }
+  }
+}

externals/fmt/doc/bootstrap/jumbotron.less

@@ -0,0 +1,50 @@
+//
+// Jumbotron
+// --------------------------------------------------
+
+
+.jumbotron {
+  padding: @jumbotron-padding (@jumbotron-padding / 2);
+  margin-bottom: @jumbotron-padding;
+  color: @jumbotron-color;
+  background-color: @jumbotron-bg;
+
+  h1,
+  .h1 {
+    color: @jumbotron-heading-color;
+  }
+
+  p {
+    margin-bottom: (@jumbotron-padding / 2);
+    font-size: @jumbotron-font-size;
+    font-weight: 200;
+  }
+
+  > hr {
+    border-top-color: darken(@jumbotron-bg, 10%);
+  }
+
+  .tb-container &,
+  .container-fluid & {
+    border-radius: @border-radius-large; // Only round corners at higher resolutions if contained in a container
+  }
+
+  .tb-container {
+    max-width: 100%;
+  }
+
+  @media screen and (min-width: @screen-sm-min) {
+    padding: (@jumbotron-padding * 1.6) 0;
+
+    .tb-container &,
+    .container-fluid & {
+      padding-left:  (@jumbotron-padding * 2);
+      padding-right: (@jumbotron-padding * 2);
+    }
+
+    h1,
+    .h1 {
+      font-size: (@font-size-base * 4.5);
+    }
+  }
+}

externals/fmt/doc/bootstrap/labels.less

@@ -0,0 +1,64 @@
+//
+// Labels
+// --------------------------------------------------
+
+.label {
+  display: inline;
+  padding: .2em .6em .3em;
+  font-size: 75%;
+  font-weight: bold;
+  line-height: 1;
+  color: @label-color;
+  text-align: center;
+  white-space: nowrap;
+  vertical-align: baseline;
+  border-radius: .25em;
+
+  // Add hover effects, but only for links
+  a& {
+    &:hover,
+    &:focus {
+      color: @label-link-hover-color;
+      text-decoration: none;
+      cursor: pointer;
+    }
+  }
+
+  // Empty labels collapse automatically (not available in IE8)
+  &:empty {
+    display: none;
+  }
+
+  // Quick fix for labels in buttons
+  .btn & {
+    position: relative;
+    top: -1px;
+  }
+}
+
+// Colors
+// Contextual variations (linked labels get darker on :hover)
+
+.label-default {
+  .label-variant(@label-default-bg);
+}
+
+.label-primary {
+  .label-variant(@label-primary-bg);
+}
+
+.label-success {
+  .label-variant(@label-success-bg);
+}
+
+.label-info {
+  .label-variant(@label-info-bg);
+}
+
+.label-warning {
+  .label-variant(@label-warning-bg);
+}
+
+.label-danger {
+  .label-variant(@label-danger-bg);
+}

externals/fmt/doc/bootstrap/list-group.less

@@ -0,0 +1,124 @@
+//
+// List groups
+// --------------------------------------------------
+
+
+// Base class
+//
+// Easily usable on <ul>, <ol>, or <div>.
+
+.list-group {
+  // No need to set list-style: none; since .list-group-item is block level
+  margin-bottom: 20px;
+  padding-left: 0; // reset padding because ul and ol
+}
+
+
+// Individual list items
+//
+// Use on `li`s or `div`s within the `.list-group` parent.
+
+.list-group-item {
+  position: relative;
+  display: block;
+  padding: 10px 15px;
+  // Place the border on the list items and negative margin up for better styling
+  margin-bottom: -1px;
+  background-color: @list-group-bg;
+  border: 1px solid @list-group-border;
+
+  // Round the first and last items
+  &:first-child {
+    .border-top-radius(@list-group-border-radius);
+  }
+  &:last-child {
+    margin-bottom: 0;
+    .border-bottom-radius(@list-group-border-radius);
+  }
+}
+
+
+// Linked list items
+//
+// Use anchor elements instead of `li`s or `div`s to create linked list items.
+// Includes an extra `.active` modifier class for showing selected items.
+
+a.list-group-item {
+  color: @list-group-link-color;
+
+  .list-group-item-heading {
+    color: @list-group-link-heading-color;
+  }
+
+  // Hover state
+  &:hover,
+  &:focus {
+    text-decoration: none;
+    color: @list-group-link-hover-color;
+    background-color: @list-group-hover-bg;
+  }
+}
+
+.list-group-item {
+  // Disabled state
+  &.disabled,
+  &.disabled:hover,
+  &.disabled:focus {
+    background-color: @list-group-disabled-bg;
+    color: @list-group-disabled-color;
+    cursor: @cursor-disabled;
+
+    // Force color to inherit for custom content
+    .list-group-item-heading {
+      color: inherit;
+    }
+    .list-group-item-text {
+      color: @list-group-disabled-text-color;
+    }
+  }
+
+  // Active class on item itself, not parent
+  &.active,
+  &.active:hover,
+  &.active:focus {
+    z-index: 2; // Place active items above their siblings for proper border styling
+    color: @list-group-active-color;
+    background-color: @list-group-active-bg;
+    border-color: @list-group-active-border;
+
+    // Force color to inherit for custom content
+    .list-group-item-heading,
+    .list-group-item-heading > small,
+    .list-group-item-heading > .small {
+      color: inherit;
+    }
+    .list-group-item-text {
+      color: @list-group-active-text-color;
+    }
+  }
+}
+
+
+// Contextual variants
+//
+// Add modifier classes to change text and background color on individual items.
+// Organizationally, this must come after the `:hover` states.
+
+.list-group-item-variant(success; @state-success-bg; @state-success-text);
+.list-group-item-variant(info; @state-info-bg; @state-info-text);
+.list-group-item-variant(warning; @state-warning-bg; @state-warning-text);
+.list-group-item-variant(danger; @state-danger-bg; @state-danger-text);
+
+
+// Custom content options
+//
+// Extra classes for creating well-formatted content within `.list-group-item`s.
+
+.list-group-item-heading {
+  margin-top: 0;
+  margin-bottom: 5px;
+}
+.list-group-item-text {
+  margin-bottom: 0;
+  line-height: 1.3;
+}

externals/fmt/doc/bootstrap/media.less

@@ -0,0 +1,61 @@
+.media {
+  // Proper spacing between instances of .media
+  margin-top: 15px;
+
+  &:first-child {
+    margin-top: 0;
+  }
+}
+
+.media,
+.media-body {
+  zoom: 1;
+  overflow: hidden;
+}
+
+.media-body {
+  width: 10000px;
+}
+
+.media-object {
+  display: block;
+}
+
+.media-right,
+.media > .pull-right {
+  padding-left: 10px;
+}
+
+.media-left,
+.media > .pull-left {
+  padding-right: 10px;
+}
+
+.media-left,
+.media-right,
+.media-body {
+  display: table-cell;
+  vertical-align: top;
+}
+
+.media-middle {
+  vertical-align: middle;
+}
+
+.media-bottom {
+  vertical-align: bottom;
+}
+
+// Reset margins on headings for tighter default spacing
+.media-heading {
+  margin-top: 0;
+  margin-bottom: 5px;
+}
+
+// Media list variation
+//
+// Undo default ul/ol styles
+.media-list {
+  padding-left: 0;
+  list-style: none;
+}

externals/fmt/doc/bootstrap/mixins.less

@@ -0,0 +1,39 @@
+// Mixins
+// --------------------------------------------------
+
+// Utilities
+@import "mixins/hide-text.less";
+@import "mixins/opacity.less";
+@import "mixins/image.less";
+@import "mixins/labels.less";
+@import "mixins/reset-filter.less";
+@import "mixins/resize.less";
+@import "mixins/responsive-visibility.less";
+@import "mixins/size.less";
+@import "mixins/tab-focus.less";
+@import "mixins/text-emphasis.less";
+@import "mixins/text-overflow.less";
+@import "mixins/vendor-prefixes.less";
+
+// Components
+@import "mixins/alerts.less";
+@import "mixins/buttons.less";
+@import "mixins/panels.less";
+@import "mixins/pagination.less";
+@import "mixins/list-group.less";
+@import "mixins/nav-divider.less";
+@import "mixins/forms.less";
+@import "mixins/progress-bar.less";
+@import "mixins/table-row.less";
+
+// Skins
+@import "mixins/background-variant.less";
+@import "mixins/border-radius.less";
+@import "mixins/gradients.less";
+
+// Layout
+@import "mixins/clearfix.less";
+@import "mixins/center-block.less";
+@import "mixins/nav-vertical-align.less";
+@import "mixins/grid-framework.less";
+@import "mixins/grid.less";

externals/fmt/doc/bootstrap/mixins/alerts.less

@@ -0,0 +1,14 @@
+// Alerts
+
+.alert-variant(@background; @border; @text-color) {
+  background-color: @background;
+  border-color: @border;
+  color: @text-color;
+
+  hr {
+    border-top-color: darken(@border, 5%);
+  }
+  .alert-link {
+    color: darken(@text-color, 10%);
+  }
+}

externals/fmt/doc/bootstrap/mixins/background-variant.less

@@ -0,0 +1,8 @@
+// Contextual backgrounds
+
+.bg-variant(@color) {
+  background-color: @color;
+  a&:hover {
+    background-color: darken(@color, 10%);
+  }
+}

externals/fmt/doc/bootstrap/mixins/border-radius.less

@@ -0,0 +1,18 @@
+// Single side border-radius
+
+.border-top-radius(@radius) {
+  border-top-right-radius: @radius;
+   border-top-left-radius: @radius;
+}
+.border-right-radius(@radius) {
+  border-bottom-right-radius: @radius;
+     border-top-right-radius: @radius;
+}
+.border-bottom-radius(@radius) {
+  border-bottom-right-radius: @radius;
+   border-bottom-left-radius: @radius;
+}
+.border-left-radius(@radius) {
+  border-bottom-left-radius: @radius;
+     border-top-left-radius: @radius;
+}

externals/fmt/doc/bootstrap/mixins/buttons.less

@@ -0,0 +1,52 @@
+// Button variants
+//
+// Easily pump out default styles, as well as :hover, :focus, :active,
+// and disabled options for all buttons
+
+.button-variant(@color; @background; @border) {
+  color: @color;
+  background-color: @background;
+  border-color: @border;
+
+  &:hover,
+  &:focus,
+  &.focus,
+  &:active,
+  &.active,
+  .open > .dropdown-toggle& {
+    color: @color;
+    background-color: darken(@background, 10%);
+        border-color: darken(@border, 12%);
+  }
+  &:active,
+  &.active,
+  .open > .dropdown-toggle& {
+    background-image: none;
+  }
+  &.disabled,
+  &[disabled],
+  fieldset[disabled] & {
+    &,
+    &:hover,
+    &:focus,
+    &.focus,
+    &:active,
+    &.active {
+      background-color: @background;
+          border-color: @border;
+    }
+  }
+
+  .badge {
+    color: @background;
+    background-color: @color;
+  }
+}
+
+// Button sizes
+.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
+  padding: @padding-vertical @padding-horizontal;
+  font-size: @font-size;
+  line-height: @line-height;
+  border-radius: @border-radius;
+}

externals/fmt/doc/bootstrap/mixins/center-block.less

@@ -0,0 +1,7 @@
+// Center-align a block level element
+
+.center-block() {
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}

externals/fmt/doc/bootstrap/mixins/clearfix.less

@@ -0,0 +1,22 @@
+// Clearfix
+//
+// For modern browsers
+// 1. The space content is one way to avoid an Opera bug when the
+//    contenteditable attribute is included anywhere else in the document.
+//    Otherwise it causes space to appear at the top and bottom of elements
+//    that are clearfixed.
+// 2. The use of `table` rather than `block` is only necessary if using
+//    `:before` to contain the top-margins of child elements.
+//
+// Source: http://nicolasgallagher.com/micro-clearfix-hack/
+
+.clearfix() {
+  &:before,
+  &:after {
+    content: " "; // 1
+    display: table; // 2
+  }
+  &:after {
+    clear: both;
+  }
+}

externals/fmt/doc/bootstrap/mixins/forms.less

@@ -0,0 +1,85 @@
+// Form validation states
+//
+// Used in forms.less to generate the form validation CSS for warnings, errors,
+// and successes.
+
+.form-control-validation(@text-color: #555; @border-color: #ccc; @background-color: #f5f5f5) {
+  // Color the label and help text
+  .help-block,
+  .control-label,
+  .radio,
+  .checkbox,
+  .radio-inline,
+  .checkbox-inline,
+  &.radio label,
+  &.checkbox label,
+  &.radio-inline label,
+  &.checkbox-inline label  {
+    color: @text-color;
+  }
+  // Set the border and box shadow on specific inputs to match
+  .form-control {
+    border-color: @border-color;
+    .box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work
+    &:focus {
+      border-color: darken(@border-color, 10%);
+      @shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten(@border-color, 20%);
+      .box-shadow(@shadow);
+    }
+  }
+  // Set validation states also for addons
+  .input-group-addon {
+    color: @text-color;
+    border-color: @border-color;
+    background-color: @background-color;
+  }
+  // Optional feedback icon
+  .form-control-feedback {
+    color: @text-color;
+  }
+}
+
+
+// Form control focus state
+//
+// Generate a customized focus state and for any input with the specified color,
+// which defaults to the `@input-border-focus` variable.
+//
+// We highly encourage you to not customize the default value, but instead use
+// this to tweak colors on an as-needed basis. This aesthetic change is based on
+// WebKit's default styles, but applicable to a wider range of browsers. Its
+// usability and accessibility should be taken into account with any change.
+//
+// Example usage: change the default blue border and shadow to white for better
+// contrast against a dark gray background.
+.form-control-focus(@color: @input-border-focus) {
+  @color-rgba: rgba(red(@color), green(@color), blue(@color), .6);
+  &:focus {
+    border-color: @color;
+    outline: 0;
+    .box-shadow(~"inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px @{color-rgba}");
+  }
+}
+
+// Form control sizing
+//
+// Relative text size, padding, and border-radii changes for form controls. For
+// horizontal sizing, wrap controls in the predefined grid classes. `<select>`
+// element gets special love because it's special, and that's a fact!
+.input-size(@input-height; @padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
+  height: @input-height;
+  padding: @padding-vertical @padding-horizontal;
+  font-size: @font-size;
+  line-height: @line-height;
+  border-radius: @border-radius;
+
+  select& {
+    height: @input-height;
+    line-height: @input-height;
+  }
+
+  textarea&,
+  select[multiple]& {
+    height: auto;
+  }
+}

externals/fmt/doc/bootstrap/mixins/gradients.less

@@ -0,0 +1,59 @@
+// Gradients
+
+#gradient {
+
+  // Horizontal gradient, from left to right
+  //
+  // Creates two color stops, start and end, by specifying a color and position for each color stop.
+  // Color stops are not available in IE9 and below.
+  .horizontal(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
+    background-image: -webkit-linear-gradient(left, @start-color @start-percent, @end-color @end-percent); // Safari 5.1-6, Chrome 10+
+    background-image: -o-linear-gradient(left, @start-color @start-percent, @end-color @end-percent); // Opera 12
+    background-image: linear-gradient(to right, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+    background-repeat: repeat-x;
+    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down
+  }
+
+  // Vertical gradient, from top to bottom
+  //
+  // Creates two color stops, start and end, by specifying a color and position for each color stop.
+  // Color stops are not available in IE9 and below.
+  .vertical(@start-color: #555; @end-color: #333; @start-percent: 0%; @end-percent: 100%) {
+    background-image: -webkit-linear-gradient(top, @start-color @start-percent, @end-color @end-percent);  // Safari 5.1-6, Chrome 10+
+    background-image: -o-linear-gradient(top, @start-color @start-percent, @end-color @end-percent);  // Opera 12
+    background-image: linear-gradient(to bottom, @start-color @start-percent, @end-color @end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+    background-repeat: repeat-x;
+    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down
+  }
+
+  .directional(@start-color: #555; @end-color: #333; @deg: 45deg) {
+    background-repeat: repeat-x;
+    background-image: -webkit-linear-gradient(@deg, @start-color, @end-color); // Safari 5.1-6, Chrome 10+
+    background-image: -o-linear-gradient(@deg, @start-color, @end-color); // Opera 12
+    background-image: linear-gradient(@deg, @start-color, @end-color); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+  }
+  .horizontal-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
+    background-image: -webkit-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
+    background-image: -o-linear-gradient(left, @start-color, @mid-color @color-stop, @end-color);
+    background-image: linear-gradient(to right, @start-color, @mid-color @color-stop, @end-color);
+    background-repeat: no-repeat;
+    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=1)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
+  }
+  .vertical-three-colors(@start-color: #00b3ee; @mid-color: #7a43b6; @color-stop: 50%; @end-color: #c3325f) {
+    background-image: -webkit-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
+    background-image: -o-linear-gradient(@start-color, @mid-color @color-stop, @end-color);
+    background-image: linear-gradient(@start-color, @mid-color @color-stop, @end-color);
+    background-repeat: no-repeat;
+    filter: e(%("progid:DXImageTransform.Microsoft.gradient(startColorstr='%d', endColorstr='%d', GradientType=0)",argb(@start-color),argb(@end-color))); // IE9 and down, gets no color-stop at all for proper fallback
+  }
+  .radial(@inner-color: #555; @outer-color: #333) {
+    background-image: -webkit-radial-gradient(circle, @inner-color, @outer-color);
+    background-image: radial-gradient(circle, @inner-color, @outer-color);
+    background-repeat: no-repeat;
+  }
+  .striped(@color: rgba(255,255,255,.15); @angle: 45deg) {
+    background-image: -webkit-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
+    background-image: -o-linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
+    background-image: linear-gradient(@angle, @color 25%, transparent 25%, transparent 50%, @color 50%, @color 75%, transparent 75%, transparent);
+  }
+}

externals/fmt/doc/bootstrap/mixins/grid-framework.less

@@ -0,0 +1,91 @@
+// Framework grid generation
+//
+// Used only by Bootstrap to generate the correct number of grid classes given
+// any value of `@grid-columns`.
+
+.make-grid-columns() {
+  // Common styles for all sizes of grid columns, widths 1-12
+  .col(@index) { // initial
+    @item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
+    .col((@index + 1), @item);
+  }
+  .col(@index, @list) when (@index =< @grid-columns) { // general; "=<" isn't a typo
+    @item: ~".col-xs-@{index}, .col-sm-@{index}, .col-md-@{index}, .col-lg-@{index}";
+    .col((@index + 1), ~"@{list}, @{item}");
+  }
+  .col(@index, @list) when (@index > @grid-columns) { // terminal
+    @{list} {
+      position: relative;
+      // Prevent columns from collapsing when empty
+      min-height: 1px;
+      // Inner gutter via padding
+      padding-left:  (@grid-gutter-width / 2);
+      padding-right: (@grid-gutter-width / 2);
+    }
+  }
+  .col(1); // kickstart it
+}
+
+.float-grid-columns(@class) {
+  .col(@index) { // initial
+    @item: ~".col-@{class}-@{index}";
+    .col((@index + 1), @item);
+  }
+  .col(@index, @list) when (@index =< @grid-columns) { // general
+    @item: ~".col-@{class}-@{index}";
+    .col((@index + 1), ~"@{list}, @{item}");
+  }
+  .col(@index, @list) when (@index > @grid-columns) { // terminal
+    @{list} {
+      float: left;
+    }
+  }
+  .col(1); // kickstart it
+}
+
+.calc-grid-column(@index, @class, @type) when (@type = width) and (@index > 0) {
+  .col-@{class}-@{index} {
+    width: percentage((@index / @grid-columns));
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = push) and (@index > 0) {
+  .col-@{class}-push-@{index} {
+    left: percentage((@index / @grid-columns));
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = push) and (@index = 0) {
+  .col-@{class}-push-0 {
+    left: auto;
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index > 0) {
+  .col-@{class}-pull-@{index} {
+    right: percentage((@index / @grid-columns));
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = pull) and (@index = 0) {
+  .col-@{class}-pull-0 {
+    right: auto;
+  }
+}
+.calc-grid-column(@index, @class, @type) when (@type = offset) {
+  .col-@{class}-offset-@{index} {
+    margin-left: percentage((@index / @grid-columns));
+  }
+}
+
+// Basic looping in LESS
+.loop-grid-columns(@index, @class, @type) when (@index >= 0) {
+  .calc-grid-column(@index, @class, @type);
+  // next iteration
+  .loop-grid-columns((@index - 1), @class, @type);
+}
+
+// Create grid for specific class
+.make-grid(@class) {
+  .float-grid-columns(@class);
+  .loop-grid-columns(@grid-columns, @class, width);
+  .loop-grid-columns(@grid-columns, @class, pull);
+  .loop-grid-columns(@grid-columns, @class, push);
+  .loop-grid-columns(@grid-columns, @class, offset);
+}

externals/fmt/doc/bootstrap/mixins/grid.less

@@ -0,0 +1,122 @@
+// Grid system
+//
+// Generate semantic grid columns with these mixins.
+
+// Centered container element
+.container-fixed(@gutter: @grid-gutter-width) {
+  margin-right: auto;
+  margin-left: auto;
+  padding-left:  (@gutter / 2);
+  padding-right: (@gutter / 2);
+  &:extend(.clearfix all);
+}
+
+// Creates a wrapper for a series of columns
+.make-row(@gutter: @grid-gutter-width) {
+  margin-left:  (@gutter / -2);
+  margin-right: (@gutter / -2);
+  &:extend(.clearfix all);
+}
+
+// Generate the extra small columns
+.make-xs-column(@columns; @gutter: @grid-gutter-width) {
+  position: relative;
+  float: left;
+  width: percentage((@columns / @grid-columns));
+  min-height: 1px;
+  padding-left:  (@gutter / 2);
+  padding-right: (@gutter / 2);
+}
+.make-xs-column-offset(@columns) {
+  margin-left: percentage((@columns / @grid-columns));
+}
+.make-xs-column-push(@columns) {
+  left: percentage((@columns / @grid-columns));
+}
+.make-xs-column-pull(@columns) {
+  right: percentage((@columns / @grid-columns));
+}
+
+// Generate the small columns
+.make-sm-column(@columns; @gutter: @grid-gutter-width) {
+  position: relative;
+  min-height: 1px;
+  padding-left:  (@gutter / 2);
+  padding-right: (@gutter / 2);
+
+  @media (min-width: @screen-sm-min) {
+    float: left;
+    width: percentage((@columns / @grid-columns));
+  }
+}
+.make-sm-column-offset(@columns) {
+  @media (min-width: @screen-sm-min) {
+    margin-left: percentage((@columns / @grid-columns));
+  }
+}
+.make-sm-column-push(@columns) {
+  @media (min-width: @screen-sm-min) {
+    left: percentage((@columns / @grid-columns));
+  }
+}
+.make-sm-column-pull(@columns) {
+  @media (min-width: @screen-sm-min) {
+    right: percentage((@columns / @grid-columns));
+  }
+}
+
+// Generate the medium columns
+.make-md-column(@columns; @gutter: @grid-gutter-width) {
+  position: relative;
+  min-height: 1px;
+  padding-left:  (@gutter / 2);
+  padding-right: (@gutter / 2);
+
+  @media (min-width: @screen-md-min) {
+    float: left;
+    width: percentage((@columns / @grid-columns));
+  }
+}
+.make-md-column-offset(@columns) {
+  @media (min-width: @screen-md-min) {
+    margin-left: percentage((@columns / @grid-columns));
+  }
+}
+.make-md-column-push(@columns) {
+  @media (min-width: @screen-md-min) {
+    left: percentage((@columns / @grid-columns));
+  }
+}
+.make-md-column-pull(@columns) {
+  @media (min-width: @screen-md-min) {
+    right: percentage((@columns / @grid-columns));
+  }
+}
+
+// Generate the large columns
+.make-lg-column(@columns; @gutter: @grid-gutter-width) {
+  position: relative;
+  min-height: 1px;
+  padding-left:  (@gutter / 2);
+  padding-right: (@gutter / 2);
+
+  @media (min-width: @screen-lg-min) {
+    float: left;
+    width: percentage((@columns / @grid-columns));
+  }
+}
+.make-lg-column-offset(@columns) {
+  @media (min-width: @screen-lg-min) {
+    margin-left: percentage((@columns / @grid-columns));
+  }
+}
+.make-lg-column-push(@columns) {
+  @media (min-width: @screen-lg-min) {
+    left: percentage((@columns / @grid-columns));
+  }
+}
+.make-lg-column-pull(@columns) {
+  @media (min-width: @screen-lg-min) {
+    right: percentage((@columns / @grid-columns));
+  }
+}

externals/fmt/doc/bootstrap/mixins/hide-text.less

@@ -0,0 +1,21 @@
+// CSS image replacement
+//
+// Heads up! v3 launched with with only `.hide-text()`, but per our pattern for
+// mixins being reused as classes with the same name, this doesn't hold up. As
+// of v3.0.1 we have added `.text-hide()` and deprecated `.hide-text()`.
+//
+// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
+
+// Deprecated as of v3.0.1 (will be removed in v4)
+.hide-text() {
+  font: ~"0/0" a;
+  color: transparent;
+  text-shadow: none;
+  background-color: transparent;
+  border: 0;
+}
+
+// New mixin to use as of v3.0.1
+.text-hide() {
+  .hide-text();
+}

externals/fmt/doc/bootstrap/mixins/image.less

@@ -0,0 +1,33 @@
+// Image Mixins
+// - Responsive image
+// - Retina image
+
+
+// Responsive image
+//
+// Keep images from scaling beyond the width of their parents.
+.img-responsive(@display: block) {
+  display: @display;
+  max-width: 100%; // Part 1: Set a maximum relative to the parent
+  height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching
+}
+
+
+// Retina image
+//
+// Short retina mixin for setting background-image and -size. Note that the
+// spelling of `min--moz-device-pixel-ratio` is intentional.
+.img-retina(@file-1x; @file-2x; @width-1x; @height-1x) {
+  background-image: url("@{file-1x}");
+
+  @media
+  only screen and (-webkit-min-device-pixel-ratio: 2),
+  only screen and (   min--moz-device-pixel-ratio: 2),
+  only screen and (     -o-min-device-pixel-ratio: 2/1),
+  only screen and (        min-device-pixel-ratio: 2),
+  only screen and (                min-resolution: 192dpi),
+  only screen and (                min-resolution: 2dppx) {
+    background-image: url("@{file-2x}");
+    background-size: @width-1x @height-1x;
+  }
+}

externals/fmt/doc/bootstrap/mixins/labels.less

@@ -0,0 +1,12 @@
+// Labels
+
+.label-variant(@color) {
+  background-color: @color;
+
+  &[href] {
+    &:hover,
+    &:focus {
+      background-color: darken(@color, 10%);
+    }
+  }
+}

externals/fmt/doc/bootstrap/mixins/list-group.less

@@ -0,0 +1,29 @@
+// List Groups
+
+.list-group-item-variant(@state; @background; @color) {
+  .list-group-item-@{state} {
+    color: @color;
+    background-color: @background;
+
+    a& {
+      color: @color;
+
+      .list-group-item-heading {
+        color: inherit;
+      }
+
+      &:hover,
+      &:focus {
+        color: @color;
+        background-color: darken(@background, 5%);
+      }
+      &.active,
+      &.active:hover,
+      &.active:focus {
+        color: #fff;
+        background-color: @color;
+        border-color: @color;
+      }
+    }
+  }
+}

externals/fmt/doc/bootstrap/mixins/nav-divider.less

@@ -0,0 +1,10 @@
+// Horizontal dividers
+//
+// Dividers (basically an hr) within dropdowns and nav lists
+
+.nav-divider(@color: #e5e5e5) {
+  height: 1px;
+  margin: ((@line-height-computed / 2) - 1) 0;
+  overflow: hidden;
+  background-color: @color;
+}

externals/fmt/doc/bootstrap/mixins/nav-vertical-align.less

@@ -0,0 +1,9 @@
+// Navbar vertical align
+//
+// Vertically center elements in the navbar.
+// Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin.
+
+.navbar-vertical-align(@element-height) {
+  margin-top: ((@navbar-height - @element-height) / 2);
+  margin-bottom: ((@navbar-height - @element-height) / 2);
+}

externals/fmt/doc/bootstrap/mixins/opacity.less

@@ -0,0 +1,8 @@
+// Opacity
+
+.opacity(@opacity) {
+  opacity: @opacity;
+  // IE8 filter
+  @opacity-ie: (@opacity * 100);
+  filter: ~"alpha(opacity=@{opacity-ie})";
+}

externals/fmt/doc/bootstrap/mixins/pagination.less

@@ -0,0 +1,23 @@
+// Pagination
+
+.pagination-size(@padding-vertical; @padding-horizontal; @font-size; @border-radius) {
+  > li {
+    > a,
+    > span {
+      padding: @padding-vertical @padding-horizontal;
+      font-size: @font-size;
+    }
+    &:first-child {
+      > a,
+      > span {
+        .border-left-radius(@border-radius);
+      }
+    }
+    &:last-child {
+      > a,
+      > span {
+        .border-right-radius(@border-radius);
+      }
+    }
+  }
+}

externals/fmt/doc/bootstrap/mixins/panels.less

@@ -0,0 +1,24 @@
+// Panels
+
+.panel-variant(@border; @heading-text-color; @heading-bg-color; @heading-border) {
+  border-color: @border;
+
+  & > .panel-heading {
+    color: @heading-text-color;
+    background-color: @heading-bg-color;
+    border-color: @heading-border;
+
+    + .panel-collapse > .panel-body {
+      border-top-color: @border;
+    }
+    .badge {
+      color: @heading-bg-color;
+      background-color: @heading-text-color;
+    }
+  }
+  & > .panel-footer {
+    + .panel-collapse > .panel-body {
+      border-bottom-color: @border;
+    }
+  }
+}

externals/fmt/doc/bootstrap/mixins/progress-bar.less

@@ -0,0 +1,10 @@
+// Progress bars
+
+.progress-bar-variant(@color) {
+  background-color: @color;
+
+  // Deprecated parent class requirement as of v3.2.0
+  .progress-striped & {
+    #gradient > .striped();
+  }
+}

externals/fmt/doc/bootstrap/mixins/reset-filter.less

@@ -0,0 +1,8 @@
+// Reset filters for IE
+//
+// When you need to remove a gradient background, do not forget to use this to reset
+// the IE filter for IE9 and below.
+
+.reset-filter() {
+  filter: e(%("progid:DXImageTransform.Microsoft.gradient(enabled = false)"));
+}

externals/fmt/doc/bootstrap/mixins/resize.less

@@ -0,0 +1,6 @@
+// Resize anything
+
+.resizable(@direction) {
+  resize: @direction; // Options: horizontal, vertical, both
+  overflow: auto; // Per CSS3 UI, `resize` only applies when `overflow` isn't `visible`
+}

externals/fmt/doc/bootstrap/mixins/responsive-visibility.less

@@ -0,0 +1,15 @@
+// Responsive utilities
+
+//
+// More easily include all the states for responsive-utilities.less.
+.responsive-visibility() {
+  display: block !important;
+  table&  { display: table; }
+  tr&     { display: table-row !important; }
+  th&,
+  td&     { display: table-cell !important; }
+}
+
+.responsive-invisibility() {
+  display: none !important;
+}

externals/fmt/doc/bootstrap/mixins/size.less

@@ -0,0 +1,10 @@
+// Sizing shortcuts
+
+.size(@width; @height) {
+  width: @width;
+  height: @height;
+}
+
+.square(@size) {
+  .size(@size; @size);
+}

externals/fmt/doc/bootstrap/mixins/tab-focus.less

@@ -0,0 +1,9 @@
+// WebKit-style focus
+
+.tab-focus() {
+  // Default
+  outline: thin dotted;
+  // WebKit
+  outline: 5px auto -webkit-focus-ring-color;
+  outline-offset: -2px;
+}

externals/fmt/doc/bootstrap/mixins/table-row.less

@@ -0,0 +1,28 @@
+// Tables
+
+.table-row-variant(@state; @background) {
+  // Exact selectors below required to override `.table-striped` and prevent
+  // inheritance to nested tables.
+  .table > thead > tr,
+  .table > tbody > tr,
+  .table > tfoot > tr {
+    > td.@{state},
+    > th.@{state},
+    &.@{state} > td,
+    &.@{state} > th {
+      background-color: @background;
+    }
+  }
+
+  // Hover states for `.table-hover`
+  // Note: this is not available for cells or rows within `thead` or `tfoot`.
+  .table-hover > tbody > tr {
+    > td.@{state}:hover,
+    > th.@{state}:hover,
+    &.@{state}:hover > td,
+    &:hover > .@{state},
+    &.@{state}:hover > th {
+      background-color: darken(@background, 5%);
+    }
+  }
+}

externals/fmt/doc/bootstrap/mixins/text-emphasis.less

@@ -0,0 +1,8 @@
+// Typography
+
+.text-emphasis-variant(@color) {
+  color: @color;
+  a&:hover {
+    color: darken(@color, 10%);
+  }
+}

externals/fmt/doc/bootstrap/mixins/text-overflow.less

@@ -0,0 +1,8 @@
+// Text overflow
+// Requires inline-block or block for proper styling
+
+.text-overflow() {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}

externals/fmt/doc/bootstrap/mixins/vendor-prefixes.less

@@ -0,0 +1,227 @@
+// Vendor Prefixes
+//
+// All vendor mixins are deprecated as of v3.2.0 due to the introduction of
+// Autoprefixer in our Gruntfile. They will be removed in v4.
+
+// - Animations
+// - Backface visibility
+// - Box shadow
+// - Box sizing
+// - Content columns
+// - Hyphens
+// - Placeholder text
+// - Transformations
+// - Transitions
+// - User Select
+
+
+// Animations
+.animation(@animation) {
+  -webkit-animation: @animation;
+       -o-animation: @animation;
+          animation: @animation;
+}
+.animation-name(@name) {
+  -webkit-animation-name: @name;
+          animation-name: @name;
+}
+.animation-duration(@duration) {
+  -webkit-animation-duration: @duration;
+          animation-duration: @duration;
+}
+.animation-timing-function(@timing-function) {
+  -webkit-animation-timing-function: @timing-function;
+          animation-timing-function: @timing-function;
+}
+.animation-delay(@delay) {
+  -webkit-animation-delay: @delay;
+          animation-delay: @delay;
+}
+.animation-iteration-count(@iteration-count) {
+  -webkit-animation-iteration-count: @iteration-count;
+          animation-iteration-count: @iteration-count;
+}
+.animation-direction(@direction) {
+  -webkit-animation-direction: @direction;
+          animation-direction: @direction;
+}
+.animation-fill-mode(@fill-mode) {
+  -webkit-animation-fill-mode: @fill-mode;
+          animation-fill-mode: @fill-mode;
+}
+
+// Backface visibility
+// Prevent browsers from flickering when using CSS 3D transforms.
+// Default value is `visible`, but can be changed to `hidden`
+
+.backface-visibility(@visibility){
+  -webkit-backface-visibility: @visibility;
+     -moz-backface-visibility: @visibility;
+          backface-visibility: @visibility;
+}
+
+// Drop shadows
+//
+// Note: Deprecated `.box-shadow()` as of v3.1.0 since all of Bootstrap's
+// supported browsers that have box shadow capabilities now support it.
+
+.box-shadow(@shadow) {
+  -webkit-box-shadow: @shadow; // iOS <4.3 & Android <4.1
+          box-shadow: @shadow;
+}
+
+// Box sizing
+.box-sizing(@boxmodel) {
+  -webkit-box-sizing: @boxmodel;
+     -moz-box-sizing: @boxmodel;
+          box-sizing: @boxmodel;
+}
+
+// CSS3 Content Columns
+.content-columns(@column-count; @column-gap: @grid-gutter-width) {
+  -webkit-column-count: @column-count;
+     -moz-column-count: @column-count;
+          column-count: @column-count;
+  -webkit-column-gap: @column-gap;
+     -moz-column-gap: @column-gap;
+          column-gap: @column-gap;
+}
+
+// Optional hyphenation
+.hyphens(@mode: auto) {
+  word-wrap: break-word;
+  -webkit-hyphens: @mode;
+     -moz-hyphens: @mode;
+      -ms-hyphens: @mode; // IE10+
+       -o-hyphens: @mode;
+          hyphens: @mode;
+}
+
+// Placeholder text
+.placeholder(@color: @input-color-placeholder) {
+  // Firefox
+  &::-moz-placeholder {
+    color: @color;
+    opacity: 1; // Override Firefox's unusual default opacity; see https://github.com/twbs/bootstrap/pull/11526
+  }
+  &:-ms-input-placeholder { color: @color; } // Internet Explorer 10+
+  &::-webkit-input-placeholder  { color: @color; } // Safari and Chrome
+}
+
+// Transformations
+.scale(@ratio) {
+  -webkit-transform: scale(@ratio);
+      -ms-transform: scale(@ratio); // IE9 only
+       -o-transform: scale(@ratio);
+          transform: scale(@ratio);
+}
+.scale(@ratioX; @ratioY) {
+  -webkit-transform: scale(@ratioX, @ratioY);
+      -ms-transform: scale(@ratioX, @ratioY); // IE9 only
+       -o-transform: scale(@ratioX, @ratioY);
+          transform: scale(@ratioX, @ratioY);
+}
+.scaleX(@ratio) {
+  -webkit-transform: scaleX(@ratio);
+      -ms-transform: scaleX(@ratio); // IE9 only
+       -o-transform: scaleX(@ratio);
+          transform: scaleX(@ratio);
+}
+.scaleY(@ratio) {
+  -webkit-transform: scaleY(@ratio);
+      -ms-transform: scaleY(@ratio); // IE9 only
+       -o-transform: scaleY(@ratio);
+          transform: scaleY(@ratio);
+}
+.skew(@x; @y) {
+  -webkit-transform: skewX(@x) skewY(@y);
+      -ms-transform: skewX(@x) skewY(@y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+
+       -o-transform: skewX(@x) skewY(@y);
+          transform: skewX(@x) skewY(@y);
+}
+.translate(@x; @y) {
+  -webkit-transform: translate(@x, @y);
+      -ms-transform: translate(@x, @y); // IE9 only
+       -o-transform: translate(@x, @y);
+          transform: translate(@x, @y);
+}
+.translate3d(@x; @y; @z) {
+  -webkit-transform: translate3d(@x, @y, @z);
+          transform: translate3d(@x, @y, @z);
+}
+.rotate(@degrees) {
+  -webkit-transform: rotate(@degrees);
+      -ms-transform: rotate(@degrees); // IE9 only
+       -o-transform: rotate(@degrees);
+          transform: rotate(@degrees);
+}
+.rotateX(@degrees) {
+  -webkit-transform: rotateX(@degrees);
+      -ms-transform: rotateX(@degrees); // IE9 only
+       -o-transform: rotateX(@degrees);
+          transform: rotateX(@degrees);
+}
+.rotateY(@degrees) {
+  -webkit-transform: rotateY(@degrees);
+      -ms-transform: rotateY(@degrees); // IE9 only
+       -o-transform: rotateY(@degrees);
+          transform: rotateY(@degrees);
+}
+.perspective(@perspective) {
+  -webkit-perspective: @perspective;
+     -moz-perspective: @perspective;
+          perspective: @perspective;
+}
+.perspective-origin(@perspective) {
+  -webkit-perspective-origin: @perspective;
+     -moz-perspective-origin: @perspective;
+          perspective-origin: @perspective;
+}
+.transform-origin(@origin) {
+  -webkit-transform-origin: @origin;
+     -moz-transform-origin: @origin;
+      -ms-transform-origin: @origin; // IE9 only
+          transform-origin: @origin;
+}
+
+
+// Transitions
+
+.transition(@transition) {
+  -webkit-transition: @transition;
+       -o-transition: @transition;
+          transition: @transition;
+}
+.transition-property(@transition-property) {
+  -webkit-transition-property: @transition-property;
+          transition-property: @transition-property;
+}
+.transition-delay(@transition-delay) {
+  -webkit-transition-delay: @transition-delay;
+          transition-delay: @transition-delay;
+}
+.transition-duration(@transition-duration) {
+  -webkit-transition-duration: @transition-duration;
+          transition-duration: @transition-duration;
+}
+.transition-timing-function(@timing-function) {
+  -webkit-transition-timing-function: @timing-function;
+          transition-timing-function: @timing-function;
+}
+.transition-transform(@transition) {
+  -webkit-transition: -webkit-transform @transition;
+     -moz-transition: -moz-transform @transition;
+       -o-transition: -o-transform @transition;
+          transition: transform @transition;
+}
+
+
+// User select
+// For selecting text on the page
+
+.user-select(@select) {
+  -webkit-user-select: @select;
+     -moz-user-select: @select;
+      -ms-user-select: @select; // IE10+
+          user-select: @select;
+}

externals/fmt/doc/bootstrap/modals.less

@@ -0,0 +1,150 @@
+//
+// Modals
+// --------------------------------------------------
+
+// .modal-open      - body class for killing the scroll
+// .modal           - container to scroll within
+// .modal-dialog    - positioning shell for the actual modal
+// .modal-content   - actual modal w/ bg and corners and shit
+
+// Kill the scroll on the body
+.modal-open {
+  overflow: hidden;
+}
+
+// Container that the modal scrolls within
+.modal {
+  display: none;
+  overflow: hidden;
+  position: fixed;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: @zindex-modal;
+  -webkit-overflow-scrolling: touch;
+
+  // Prevent Chrome on Windows from adding a focus outline. For details, see
+  // https://github.com/twbs/bootstrap/pull/10951.
+  outline: 0;
+
+  // When fading in the modal, animate it to slide down
+  &.fade .modal-dialog {
+    .translate(0, -25%);
+    .transition-transform(~"0.3s ease-out");
+  }
+  &.in .modal-dialog { .translate(0, 0) }
+}
+.modal-open .modal {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+// Shell div to position the modal with bottom padding
+.modal-dialog {
+  position: relative;
+  width: auto;
+  margin: 10px;
+}
+
+// Actual modal
+.modal-content {
+  position: relative;
+  background-color: @modal-content-bg;
+  border: 1px solid @modal-content-fallback-border-color; //old browsers fallback (ie8 etc)
+  border: 1px solid @modal-content-border-color;
+  border-radius: @border-radius-large;
+  .box-shadow(0 3px 9px rgba(0,0,0,.5));
+  background-clip: padding-box;
+  // Remove focus outline from opened modal
+  outline: 0;
+}
+
+// Modal background
+.modal-backdrop {
+  position: fixed;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: @zindex-modal-background;
+  background-color: @modal-backdrop-bg;
+  // Fade for backdrop
+  &.fade { .opacity(0); }
+  &.in { .opacity(@modal-backdrop-opacity); }
+}
+
+// Modal header
+// Top section of the modal w/ title and dismiss
+.modal-header {
+  padding: @modal-title-padding;
+  border-bottom: 1px solid @modal-header-border-color;
+  min-height: (@modal-title-padding + @modal-title-line-height);
+}
+// Close icon
+.modal-header .close {
+  margin-top: -2px;
+}
+
+// Title text within header
+.modal-title {
+  margin: 0;
+  line-height: @modal-title-line-height;
+}
+
+// Modal body
+// Where all modal content resides (sibling of .modal-header and .modal-footer)
+.modal-body {
+  position: relative;
+  padding: @modal-inner-padding;
+}
+
+// Footer (for actions)
+.modal-footer {
+  padding: @modal-inner-padding;
+  text-align: right; // right align buttons
+  border-top: 1px solid @modal-footer-border-color;
+  &:extend(.clearfix all); // clear it in case folks use .pull-* classes on buttons
+
+  // Properly space out buttons
+  .btn + .btn {
+    margin-left: 5px;
+    margin-bottom: 0; // account for input[type="submit"] which gets the bottom margin like all other inputs
+  }
+  // but override that for button groups
+  .btn-group .btn + .btn {
+    margin-left: -1px;
+  }
+  // and override it for block buttons as well
+  .btn-block + .btn-block {
+    margin-left: 0;
+  }
+}
+
+// Measure scrollbar width for padding body during modal show/hide
+.modal-scrollbar-measure {
+  position: absolute;
+  top: -9999px;
+  width: 50px;
+  height: 50px;
+  overflow: scroll;
+}
+
+// Scale up the modal
+@media (min-width: @screen-sm-min) {
+  // Automatically set modal's width for larger viewports
+  .modal-dialog {
+    width: @modal-md;
+    margin: 30px auto;
+  }
+  .modal-content {
+    .box-shadow(0 5px 15px rgba(0,0,0,.5));
+  }
+
+  // Modal sizes
+  .modal-sm { width: @modal-sm; }
+}
+
+@media (min-width: @screen-md-min) {
+  .modal-lg { width: @modal-lg; }
+}