feat(edf): add parser and queries

lua/nvim-treesitter/parsers.lua

@@ -447,6 +447,14 @@ return {
     maintainers = { '@ValdezFOmar' },
     tier = 2,
   },
+  edf = {
+    install_info = {
+      revision = 'c983376fc85491d06b7c2b7fdd945bc157c414ed',
+      url = 'https://github.com/ph1losof/tree-sitter-edf',
+    },
+    maintainers = { '@ph1losof' },
+    tier = 2,
+  },
   eds = {
     install_info = {
       revision = '26d529e6cfecde391a03c21d1474eb51e0285805',

runtime/queries/edf/folds.scm

@@ -0,0 +1,6 @@
+; Folds for EDF
+
+[
+  (double_quoted_string)
+  (single_quoted_string)
+] @fold

runtime/queries/edf/highlights.scm

@@ -0,0 +1,37 @@
+; Highlighting queries for EDF (Ecolog Dotenv File Format)
+
+; Comments
+(comment) @comment
+(comment_content) @comment
+(inline_comment) @comment
+
+; Export keyword
+(export_keyword) @keyword
+
+; Keys (variable names)
+(key) @property
+
+; String values
+(single_quoted_string) @string
+(single_quoted_content) @string
+(double_quoted_string) @string
+(double_quoted_content) @string
+(unquoted_content) @string
+
+; Escape sequences in double-quoted strings
+(escape_sequence) @string.escape
+
+; Variable expansion ${VAR} and ${VAR:-default}
+(variable_expansion) @variable
+
+; Simple variable $VAR
+(simple_variable) @variable
+
+; Command substitution $(command) and `command`
+(command_substitution) @function.macro
+(backtick_substitution) @function.macro
+
+; Operators and punctuation
+"=" @operator
+"'" @punctuation.delimiter
+"\"" @punctuation.delimiter