feat: Add gitignore support (#260)

Author: jcs090218

.gitmodules

@@ -424,3 +424,9 @@
 	branch = master
 	update = none
 	ignore = dirty
+[submodule "repos/gitignore"]
+	path = repos/gitignore
+	url = https://github.com/shunsambongi/tree-sitter-gitignore
+	branch = main
+	update = none
+	ignore = dirty

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Changelog
 
 ## Unreleased
+- Add `gitignore` support
 
 ## 0.12.56 - 2023-10-05
 - Add `gitattributes` support

queries/gitignore/highlights.scm

@@ -0,0 +1,31 @@
+(comment) @comment @spell
+
+[
+  (directory_separator)
+  (directory_separator_escaped)
+] @punctuation.delimiter
+
+[
+  (wildcard_char_single)
+  (wildcard_chars)
+  (wildcard_chars_allow_slash)
+  (bracket_negation)
+] @operator
+
+(negation) @punctuation.special
+
+[
+  (pattern_char_escaped)
+  (bracket_char_escaped)
+] @string.escape
+
+;; bracket expressions
+[
+  "["
+  "]"
+] @punctuation.bracket
+
+(bracket_char) @constant
+(bracket_range 
+  "-" @operator)
+(bracket_char_class) @constant.builtin

repos/gitignore

@@ -127,6 +127,7 @@ See `tree-sitter-langs-repos'."
                 (fortran-mode           . fortran)
                 (gdscript-mode          . gdscript)
                 (gitattributes-mode     . gitattributes)
+                (gitignore-mode         . gitignore)
                 (go-mode                . go)
                 (haskell-mode           . haskell)
                 (hcl-mode               . hcl)