Add support for ShellCheck configuration files (github-linguist#5667)

lib/linguist/languages.yml

@@ -3737,7 +3737,7 @@ MoonScript:
   language_id: 238
 Motoko:
   type: programming
-  color: '#fbb03b'
+  color: "#fbb03b"
   extensions:
   - ".mo"
   tm_scope: source.mo
@@ -5664,6 +5664,18 @@ Shell:
   codemirror_mode: shell
   codemirror_mime_type: text/x-sh
   language_id: 346
+ShellCheck Config:
+  type: data
+  color: "#cecfcb"
+  filenames:
+  - ".shellcheckrc"
+  aliases:
+  - shellcheckrc
+  tm_scope: source.shellcheckrc
+  ace_mode: ini
+  codemirror_mode: properties
+  codemirror_mime_type: text/x-properties
+  language_id: 687511714
 ShellSession:
   type: programming
   extensions:

samples/ShellCheck Config/filenames/.shellcheckrc

@@ -0,0 +1,9 @@
+shell=sh
+enable=avoid-nullary-conditions,deprecate-which,quote-safe-variables
+
+# Solaris 8-9 compatibility
+disable=SC2006  # Don't suggest $(…) instead of `…`
+disable=SC2021  # Ignore bracketed tr(1) ranges
+
+# Don't suggest explicit “-n” operators in tests
+disable=SC2244

vendor/README.md

@@ -432,6 +432,7 @@ This is a list of grammars that Linguist selects to provide syntax highlighting
 - **Scilab:** [textmate/scilab.tmbundle](https://github.com/textmate/scilab.tmbundle)
 - **ShaderLab:** [tgjones/shaders-tmLanguage](https://github.com/tgjones/shaders-tmLanguage)
 - **Shell:** [atom/language-shellscript](https://github.com/atom/language-shellscript)
+- **ShellCheck Config:** [Alhadis/language-etc](https://github.com/Alhadis/language-etc)
 - **ShellSession:** [atom/language-shellscript](https://github.com/atom/language-shellscript)
 - **Shen:** [rkoeninger/sublime-shen](https://github.com/rkoeninger/sublime-shen)
 - **Sieve:** [Alhadis/language-etc](https://github.com/Alhadis/language-etc)