Table of Contents

Programming language file name extensions

Programming language file name extensions

gh plugin

  1. Defines all Languages known to GitHub.
  3. fs_name - Optional field. Only necessary as a replacement for the sample directory name if the
  4. language name is not a valid filename under the Windows filesystem (e.g., if it
  5. contains an asterisk).
  6. type - Either data, programming, markup, prose, or nil
  7. aliases - An Array of additional aliases (implicitly
  8. includes name.downcase)
  9. ace_mode - A String name of the Ace Mode used for highlighting whenever
  10. a file is edited. This must match one of the filenames in http://git.io/3XO_Cg.
  11. Use “text” if a mode does not exist.
  12. codemirror_mode - A String name of the CodeMirror Mode used for highlighting whenever a file is edited.
  13. This must match a mode from https://git.io/vi9Fx
  14. codemirror_mime_type - A String name of the file mime type used for highlighting whenever a file is edited.
  15. This should match the `mime` associated with the mode from https://git.io/f4SoQ
  16. wrap - Boolean wrap to enable line wrapping (default: false)
  17. extensions - An Array of associated extensions (the first one is
  18. considered the primary extension, the others should be
  19. listed alphabetically)
  20. filenames - An Array of filenames commonly associated with the language
  21. interpreters - An Array of associated interpreters
  22. language_id - Integer used as a language-name-independent indexed field so that we can rename
  23. languages in Linguist without reindexing all the code on GitHub. Must not be
  24. changed for existing languages without the explicit permission of GitHub staff.
  25. color - CSS hex color to represent the language. Only used if type is “programming” or “markup”.
  26. tm_scope - The TextMate scope that represents this programming
  27. language. This should match one of the scopes listed in
  28. the grammars.yml file. Use “none” if there is no grammar
  29. for this language.
  30. group - Name of the parent language. Languages in a group are counted
  31. in the statistics as the parent language.
  33. Any additions or modifications (even trivial) should have corresponding
  34. test changes in `test/test_blob.rb`.
  36. Please keep this list alphabetized. Capitalization comes before lowercase.

1C Enterprise:

4D:

ABAP:

ABAP CDS:

ABNF:

 type: data
 ace_mode: text

AGS Script:

AIDL:

AL:

AMPL:

ANTLR:

API Blueprint:

 type: markup
 color: "#2ACCA8"
 ace_mode: markdown

APL:

ASL:

ASN.1:

 type: data

ASP.NET:

ATS:

ActionScript:

Ada:

Adobe Font Metrics:

 type: data
 color: "#fa0f00"
 tm_scope: source.afm

Agda:

Alloy:

Alpine Abuild:

Altium Designer:

 type: data
 color: "#A89663"

AngelScript:

Ant Build System:

 type: data
 color: "#A9157E"
 tm_scope: text.xml.ant
 filenames:
 - ant.xml
 - build.xml
 ace_mode: xml
 codemirror_mode: xml
 codemirror_mime_type: application/xml

ApacheConf:

 type: data
 color: "#d12127"

Apex:

Apollo Guidance Computer:

AppleScript:

Arc:

AsciiDoc:

 type: prose
 color: "#73a0c5"
 ace_mode: asciidoc
 wrap: true

AspectJ:

Assembly:

Astro:

 type: markup
 color: "#ff5a03"

Asymptote:

Augeas:

AutoHotkey:

AutoIt:

Avro IDL:

 type: data
 color: "#0040FF"

Awk:

BASIC:

Ballerina:

Batchfile:

Beef:

Befunge:

BibTeX:

 type: markup
 color: "#778899"
 group: TeX

Bicep:

Bison:

BitBake:

Blade:

 type: markup
 color: "#f7523f"

BlitzBasic:

BlitzMax:

Bluespec:

Boo:

Boogie:

Brainfuck:

Brightscript:

Browserslist:

 type: data
 color: "#ffd539"
 filenames:
** ” text * [[language_id: 153503348 C:

C#

C Sharp | C:

aliases:

 - csharp
 - cake
 - cakescript

extensions: ** ”.[[cs“ ** ”.cake" ** "[[.csx" ** "[[.linq" * [[language_id: 42

C++

C plus plus | C++:

aliases:

 - cpp

extensions: ** “.[[cpp” ** “.[[c++” ** “.[[cc” ** “.[[cp” ** “.cxx" ** "[[.h" ** "[[.h++" ** "[[.hh" ** "[[.hpp" ** "[[.hxx" ** "[[.inc" ** "[[.inl" ** "[[.ino" ** "[[.ipp" ** "[[.ixx" ** "[[.re" ** "[[.tcc" ** "[[.tpp" * [[language_id: 43 C-ObjDump:

 type: data

C2hs Haskell:

CIL:

 type: data
 tm_scope: source.cil

CLIPS:

CMake:

COBOL:

CODEOWNERS:

 type: data
 filenames:
 - CODEOWNERS
 tm_scope: text.codeowners
 ace_mode: gitignore

COLLADA:

 type: data
 color: "#F1A42B"

CSON:

 type: data
 color: "#244776"
 tm_scope: source.coffee
 ace_mode: coffee
 codemirror_mode: coffeescript
 codemirror_mime_type: text/x-coffeescript

CSS:

 type: markup
 tm_scope: source.css
 ace_mode: css
 codemirror_mode: css
 codemirror_mime_type: text/css
 color: "#563d7c"

CSV:

 type: data
 color: "#237346"
 ace_mode: text
 tm_scope: none

CUE:

CWeb:

Cabal Config:

 type: data
 color: "#483465"

Cap'n Proto:

CartoCSS:

Ceylon:

Chapel:

Charity:

ChucK:

Cirru:

Clarion:

Classic ASP:

Clean:

Click:

Clojure:

Closure Templates:

 type: markup
 color: "#0d948f"
 ace_mode: soy_template
 codemirror_mode: soy
 codemirror_mime_type: text/x-soy

Cloud Firestore Security Rules:

 type: data
 color: "#FFA000"
 ace_mode: less
 codemirror_mode: css
 codemirror_mime_type: text/css
 tm_scope: source.firestore
 filenames:
 - firestore.rules

CoNLL-U:

 type: data

CodeQL:

CoffeeScript:

ColdFusion:

ColdFusion CFC:

Common Lisp:

Common Workflow Language:

Component Pascal:

Cool:

Coq:

Cpp-ObjDump:

 type: data

Creole:

 type: prose
 wrap: true

Crystal:

Csound:

Csound Document:

Csound Score:

Cuda:

Cue Sheet:

 type: data

Cycript:

Cython:

D:

D-ObjDump:

 type: data

DIGITAL Command Language:

DM:

DNS Zone:

 type: data

DTrace:

Dafny:

Darcs Patch:

 type: data
 color: "#8eff23"

Dart:

DataWeave:

Dhall:

Diff:

 type: data

DirectX 3D File:

 type: data
 color: "#aace60"

Dockerfile:

Dogescript:

Dylan:

E:

E-mail:

 type: data

EBNF:

 type: data

ECL:

ECLiPSe:

EJS:

 type: markup
 color: "#a91e50"

EQ:

Eagle:

 type: data

Earthly:

Easybuild:

 type: data
 color: "#069406"
 group: Python
 ace_mode: python
 codemirror_mode: python
 codemirror_mime_type: text/x-python
 tm_scope: source.python

Ecere Projects:

 type: data
 color: "#913960"
 group: JavaScript

EditorConfig:

 type: data
 color: "#fff1f2"
 group: INI
 filenames:
** ”.editorconfig" * [[language aliases:
 - editor-config
 ace_mode: ini
 codemirror_mode: properties
 codemirror_mime_type: text/x-properties
 tm_scope: source.editorconfig

Edje Data Collection:

 type: data

Eiffel:

Elixir:

Elm:

Emacs Lisp:

EmberScript:

Erlang:

F#:

F*:

 fs_name: Fstar

FIGlet Font:

 type: data
 color: "#FFDDBB"

FLUX:

Factor:

Fancy:

Fantom:

Faust:

Fennel:

Filebench WML:

Filterscript:

Fluent:

Formatted:

 type: data

Forth:

Fortran:

 group: Fortran

Fortran Free Form:

 group: Fortran
 color: "#4d41b1"

FreeBasic:

FreeMarker:

Frege:

Futhark:

G-code:

GAML:

GAMS:

GAP:

GCC Machine Description:

GDB:

GDScript:

GEDCOM:

 type: data
 color: "#003058"
 ace_mode: text

GLSL:

GN:

 type: data

Game Maker Language:

Gemfile.lock:

 type: data
 color: "#701516"
 searchable: false
 tm_scope: source.gemfile-lock
 ace_mode: text
 filenames:
 - Gemfile.lock

Genie:

Genshi:

Gentoo Ebuild:

Gentoo Eclass:

Gerber Image:

 type: data
 color: "#d20b00"

Gettext Catalog:

 type: prose

Gherkin:

Git Attributes:

 type: data
 color: "#F44D27"
 group: INI

Git Config:

 type: data
 color: "#F44D27"
 group: INI

Glyph:

Glyph Bitmap Distribution Format:

 type: data

Gnuplot:

Go:

Go Checksums:

 type: data
 color: "#00ADD8"

Go Module:

 type: data
 color: "#00ADD8"

Golo:

Gosu:

Grace:

Gradle:

 type: data
 color: "#02303a"

Grammatical Framework:

Graph Modeling Language:

 type: data

GraphQL:

 type: data
 color: "#e10098"

Graphviz (DOT):

 type: data
 color: "#2596be"
 tm_scope: source.dot

Groovy:

Groovy Server Pages:

HAProxy:

 type: data
 color: "#106da9"

HCL:

HLSL:

HTML:

 type: markup
 tm_scope: text.html.basic
 ace_mode: html
 codemirror_mode: htmlmixed
 codemirror_mime_type: text/html
 color: "#e34c26"

HTML+ECR:

 type: markup
 color: "#2e1052"
 tm_scope: text.html.ecr
 group: HTML

HTML+EEX:

 type: markup
 color: "#6e4a7e"
 tm_scope: text.html.elixir
 group: HTML

HTML+ERB:

 type: markup
 color: "#701516"
 tm_scope: text.html.erb
 group: HTML

HTML+PHP:

 type: markup
 color: "#4f5d95"
 tm_scope: text.html.php
 group: HTML

HTML+Razor:

 type: markup
 color: "#512be4"
 tm_scope: text.html.cshtml
 group: HTML

HTTP:

 type: data
 color: "#005C9C"

HXML:

 type: data
 color: "#f68712"
 ace_mode: text

Hack:

Haml:

 type: markup
 color: "#ece2a9"

Handlebars:

 type: markup
 color: "#f7931e"

Harbour:

Haskell:

Haxe:

HiveQL:

HolyC:

Hy:

HyPhy:

IDL:

IGOR Pro:

INI:

 type: data
 color: "#d1dbe0"

IRC log:

 type: data

Idris:

Ignore List:

 type: data
 color: "#000000"
 group: INI

ImageJ Macro:

Inform 7:

Inno Setup:

Io:

Ioke:

Isabelle:

Isabelle ROOT:

J:

JAR Manifest:

 type: data
 color: "#b07219"
 filenames:
 - MANIFEST.MF
 tm_scope: source.yaml
 ace_mode: text

JFlex:

JSON

JSON: 

 type: data
 color: "#292929"
 tm_scope: source.json
 ace_mode: json
 codemirror_mode: javascript
 codemirror_mime_type: application/json

JSON with Comments:

 type: data
 color: "#292929"
 group: JSON
 tm_scope: source.js
 ace_mode: javascript
 codemirror_mode: javascript
 codemirror_mime_type: text/javascript

JSON5:

 type: data
 color: "#267CB9"

JSONLD:

 type: data
 color: "#0c479c"

JSONiq:

 color: "#40d47e"

Jasmin:

Java:

Java Properties:

 type: data
 color: "#2A6277"

Java Server Pages:

JavaScript:

JavaScript+ERB:

Jest Snapshot:

 type: data
 color: "#15c213"
 tm_scope: source.jest.snap

Jinja:

 type: markup
 color: "#a52a22"

Jison:

Jison Lex:

Jolie:

Jsonnet:

 color: "#0064bd"

Julia:

Jupyter Notebook:

 type: markup
 ace_mode: json
 codemirror_mode: javascript
 codemirror_mime_type: application/json
 tm_scope: source.json
 color: "#DA5B0B"

KRL:

Kaitai Struct:

KakouneScript:

KiCad Layout:

 type: data
 color: "#2f4aab"

KiCad Legacy Layout:

 type: data
 color: "#2f4aab"

KiCad Schematic:

 type: data
 color: "#2f4aab"

Kit:

 type: markup
 ace_mode: html
 codemirror_mode: htmlmixed
 codemirror_mime_type: text/html

Kotlin:

Kusto:

 type: data

LFE:

LLVM:

LOLCODE:

LSL:

LTspice Symbol:

 type: data

LabVIEW:

Lark:

 type: data
 color: "#2980B9"

Lasso:

Latte:

 type: markup
 color: "#f2a542"

Lean:

Less:

 type: markup
 color: "#1d365d"

Lex:

LilyPond:

Limbo:

Linker Script:

 type: data

Linux Kernel Module:

 type: data

Liquid:

 type: markup
 color: "#67b8de"

Literate Agda:

Literate CoffeeScript:

Literate Haskell:

LiveScript:

Logos:

Logtalk:

LookML:

LoomScript:

Lua:

M:

M4:

M4Sugar:

MATLAB:

MAXScript:

MLIR:

MQL4:

MQL5:

MTML:

 type: markup
 color: "#b7e1f4"

MUF:

Macaulay2:

Makefile:

Mako:

Markdown:

 type: prose
 color: "#083fa1"

Marko:

 type: markup
 color: "#42bff2"
 tm_scope: text.marko

Mask:

 type: markup
 color: "#f97732"
 ace_mode: mask

Mathematica:

Maven POM:

 type: data
 group: XML
 tm_scope: text.xml.pom
 filenames:
 - pom.xml
 ace_mode: xml
 codemirror_mode: xml
 codemirror_mime_type: text/xml

Max:

Mercury:

Meson:

Metal:

Microsoft Developer Studio Project:

 type: data

Microsoft Visual Studio Solution:

 type: data

MiniD:

Mirah:

Modelica:

Modula-2:

Modula-3:

Module Management System:

Monkey:

Moocode:

MoonScript:

Motoko:

Motorola 68K Assembly:

Muse:

 type: prose

Mustache:

 type: markup
 color: "#724b3b"

Myghty:

NASL:

NCL:

NEON:

 type: data

NL:

 type: data

NPM Config:

 type: data
 color: "#cb3837"
 group: INI

NSIS:

NWScript:

Nearley:

Nemerle:

NetLinx:

NetLinx+ERB:

NetLogo:

NewLisp:

Nextflow:

Nginx:

 type: data
 color: "#009639"

Nim:

Ninja:

 type: data
 tm_scope: source.ninja

Nit:

Nix:

Nu:

NumPy:

Nunjucks:

 type: markup
 color: "#3d8137"

OCaml:

ObjDump:

 type: data

Object Data Instance Notation:

 type: data

ObjectScript:

Objective-C:

Objective-C++:

Objective-J:

Odin:

Omgrofl:

Opa:

Opal:

Open Policy Agent:

OpenCL:

OpenEdge ABL:

OpenQASM:

OpenRC runscript:

OpenSCAD:

OpenStep Property List:

 type: data

OpenType Feature File:

 type: data

Org:

 type: prose
 color: "#77aa99"
 wrap: true

Ox:

Oxygene:

Oz:

P4:

PEG.js:

PHP:

PLSQL:

PLpgSQL:

POV-Ray SDL:

Pan:

Papyrus:

Parrot:

Parrot Assembly:

 group: Parrot

Parrot Internal Representation:

 group: Parrot
 tm_scope: source.parrot.pir

Pascal:

Pawn:

Pep8:

Perl:

Pic:

 type: markup
 group: Roff
 tm_scope: source.pic

Pickle:

 type: data

PicoLisp:

PigLatin:

Pike:

PlantUML:

 type: data

Pod:

 type: prose
 ace_mode: perl
 codemirror_mode: perl
 codemirror_mime_type: text/x-perl
 wrap: true

Pod 6:

 type: prose
 ace_mode: perl
 tm_scope: source.raku
 wrap: true

PogoScript:

Pony:

PostCSS:

 type: markup
 color: "#dc3a0c"
 tm_scope: source.postcss
 group: CSS

PostScript:

 type: markup
 color: "#da291c"

PowerBuilder:

PowerShell:

Prisma:

 type: data
 color: "#0c344b"

Processing:

Proguard:

 type: data

Prolog:

Promela:

Propeller Spin:

Protocol Buffer:

 type: data

Public Key:

 type: data

Pug:

 type: markup
 color: "#a86454"

Puppet:

Pure Data:

 type: data

PureBasic:

PureScript:

Python:

Python console:

Python traceback:

 type: data
 color: "#3572A5"
 group: Python

Q#:

QML:

QMake:

Qt Script:

Quake:

R:

RAML:

 type: markup
 ace_mode: yaml
 codemirror_mode: yaml
 codemirror_mime_type: text/x-yaml
 tm_scope: source.yaml
 color: "#77d9fb"

RDoc:

 type: prose
 color: "#701516"
 ace_mode: rdoc
 wrap: true

REALbasic:

REXX:

RMarkdown:

 type: prose
 color: "#198ce7"
 wrap: true
 ace_mode: markdown
 codemirror_mode: gfm
 codemirror_mime_type: text/x-gfm

RPC:

RPM Spec:

 type: data
 tm_scope: source.rpm-spec

RUNOFF:

 type: markup
 color: "#665a4e"

Racket:

Ragel:

Raku:

Rascal:

Raw token data:

 type: data

ReScript:

Readline Config:

 type: data
 group: INI

Reason:

Rebol:

Record Jar:

 type: data
 filenames:
 - language-subtag-registry.txt
 tm_scope: source.record-jar
 codemirror_mode: properties
 codemirror_mime_type: text/x-properties
 ace_mode: text
 color: "#0673ba"

Red:

Redcode:

Redirect Rules:

 type: data

Regular Expression:

 type: data
 color: "#009a00"

Ren'Py:

RenderScript:

Rich Text Format:

 type: markup

Ring:

Riot:

 type: markup
 color: "#A71E49"
 ace_mode: html

RobotFramework:

Roff:

 type: markup
 color: "#ecdebe"

Roff Manpage:

 type: markup
 color: "#ecdebe"
 group: Roff

Rouge:

Ruby:

Rust:

SAS:

SCSS:

 type: markup
 color: "#c6538c"
 tm_scope: source.css.scss
 ace_mode: scss
 codemirror_mode: css
 codemirror_mime_type: text/x-scss

SELinux Policy:

SMT:

SPARQL:

 type: data
 color: "#0C4597"
 tm_scope: source.sparql
 ace_mode: text
 codemirror_mode: sparql
 codemirror_mime_type: application/sparql-query

SQF:

SQL:

 type: data
 color: "#e38c00"
 tm_scope: source.sql
 ace_mode: sql
 codemirror_mode: sql
 codemirror_mime_type: text/x-sql

SQLPL:

SRecode Template:

 type: markup
 color: "#348a34"
 tm_scope: source.lisp
 ace_mode: lisp
 codemirror_mode: commonlisp
 codemirror_mime_type: text/x-common-lisp

SSH Config:

 type: data
 group: INI
 filenames:
 - ssh-config
 - ssh_config
 - sshconfig
 - sshconfig.snip
 - sshd-config
 - sshd_config
 ace_mode: text
 tm_scope: source.ssh-config

STON:

 type: data
 group: Smalltalk

SVG:

 type: data
 color: "#ff9900"

SWIG:

Sage:

SaltStack:

Sass:

 type: markup
 color: "#a53b70"
 tm_scope: source.sass

Scala:

Scaml:

 type: markup
 color: "#bd181a"

Scheme:

Scilab:

Self:

ShaderLab:

Shell:

ShellCheck Config:

 type: data
 color: "#cecfcb"
 filenames:
** ”.shellcheckrc" * [[language aliases:
 - shellcheckrc
 tm_scope: source.shellcheckrc
 ace_mode: ini
 codemirror_mode: properties
 codemirror_mime_type: text/x-properties

ShellSession:

Shen:

Sieve:

Singularity:

Slash:

Slice:

Slim:

 type: markup
 color: "#2b2b2b"

SmPL:

Smali:

Smalltalk:

Smarty:

Solidity:

Soong:

 type: data
 tm_scope: source.bp
 ace_mode: text
 filenames:
 - Android.bp

SourcePawn:

Spline Font Database:

 type: data

Squirrel:

Stan:

Standard ML:

Starlark:

Stata:

StringTemplate:

 type: markup
 color: "#3fb34f"

Stylus:

 type: markup
 color: "#ff6347"

SubRip Text:

 type: data
 color: "#9e0101"

SugarSS:

 type: markup
 color: "#2fcc9f"
 tm_scope: source.css.postcss.sugarss
 group: CSS

SuperCollider:

Svelte:

 type: markup
 color: "#ff3e00"
 tm_scope: source.svelte
 ace_mode: html
 codemirror_mode: htmlmixed
 codemirror_mime_type: text/html

Swift:

SystemVerilog:

TI Program:

TLA:

TOML:

 type: data
 color: "#9c4221"

TSQL:

TSV:

 type: data
 color: "#237346"
 ace_mode: text
 tm_scope: source.generic-db

TSX:

TXL:

Tcl:

Tcsh:

TeX:

 type: markup
 color: "#3D6117"
 ace_mode: tex
 codemirror_mode: stex
 codemirror_mime_type: text/x-stex
 tm_scope: text.tex.latex
 wrap: true

Tea:

 type: markup

Terra:

Texinfo:

 type: prose
 wrap: true

Text:

 type: prose
 wrap: true

TextMate Properties:

 type: data
 color: "#df66e4"

Textile:

 type: prose
 color: "#ffe7ac"
 ace_mode: textile
 codemirror_mode: textile
 codemirror_mime_type: text/x-textile
 wrap: true

Thrift:

Turing:

Turtle:

 type: data

Twig:

 type: markup
 color: "#c1d026"

Type Language:

 type: data

TypeScript:

Unified Parallel C:

Unity3D Asset:

 type: data
 color: "#222c37"
 ace_mode: yaml
 codemirror_mode: yaml
 codemirror_mime_type: text/x-yaml

Unix Assembly:

Uno:

UnrealScript:

UrWeb:

V:

VBA:

VBScript:

VCL:

VHDL:

Vala:

Valve Data Format:

 type: data
 color: "#f26025"

Verilog:

Vim Help File:

 type: prose
 color: "#199f4b"

Vim Script:

Vim Snippet:

 type: markup
 color: "#199f4b"

Visual Basic .NET:

Volt:

Vue:

 type: markup
 color: "#41b883"

Wavefront Material:

 type: data

Wavefront Object:

 type: data

Web Ontology Language:

 type: data
 color: "#5b70bd"

WebAssembly:

WebIDL:

WebVTT:

 type: data
 wrap: true

Wget Config:

 type: data
 group: INI

Wikitext:

 type: prose
 color: "#fc5757"
 wrap: true

Windows Registry Entries:

 type: data
 color: "#52d5ff"

Wollok:

World of Warcraft Addon Data:

 type: data
 color: "#f7e43f"

X BitMap:

 type: data
 group: C

X Font Directory Index:

 type: data
 filenames:
 - encodings.dir
 - fonts.alias
 - fonts.dir
 - fonts.scale
 tm_scope: source.fontdir
 ace_mode: text

X PixMap:

 type: data
 group: C

X10:

XC:

XCompose:

 type: data
 filenames:
** ” text * [[language_id: 225167241 XML:
 type: data
 color: "#0060ac"
 tm_scope: text.xml
 ace_mode: xml
 codemirror_mode: xml
 codemirror_mime_type: text/xml

XML Property List:

 type: data
 color: "#0060ac"
 group: XML

XPages:

 type: data

XProc:

XQuery:

XS:

XSLT:

Xojo:

Xonsh:

Xtend:

YAML:

 type: data
 color: "#cb171e"
 tm_scope: source.yaml

YANG:

 type: data

YARA:

YASnippet:

 type: markup

Yacc:

ZAP:

ZIL:

Zeek:

ZenScript:

Zephir:

Zig:

Zimpl:

cURL Config:

 type: data
 group: INI

desktop:

 type: data

dircolors:

 type: data

eC:

edn:

 type: data
 ace_mode: clojure
 codemirror_mode: clojure
 codemirror_mime_type: text/x-clojure

fish:

jq:

 color: "#c7254e"
 ace_mode: text

mIRC Script:

mcfunction:

mupad:

nanorc:

 type: data
 color: "#2d004d"
 group: INI

nesC:

ooc:

q:

reStructuredText:

 type: prose
 color: "#141414"
 wrap: true

robots.txt:

 type: data

sed:

wdl:

wisp:

xBase:

Fair Use Source: https://github.com/github/linguist/tree/master/lib/linguist