feat(pug): improve syntax highlighting

queries/ecma/highlights.scm

@@ -166,6 +166,9 @@
   (super)
 ] @variable.builtin
 
+((identifier) @variable.builtin
+ (#eq? @variable.builtin "self"))
+
 [
   (true)
   (false)

queries/pug/highlights.scm

@@ -1,7 +1,7 @@
-(comment) @comment
+(comment) @comment @spell
+
 (tag_name) @tag
-(
+((tag_name) @constant.builtin
-  (tag_name) @constant.builtin
  ; https://www.script-example.com/html-tag-liste
  (#any-of? @constant.builtin
   "head" "title" "base" "link" "meta" "style"
@@ -13,18 +13,68 @@
   "table" "caption" "colgroup" "col" "tbody" "thead" "tfoot" "tr" "td" "th "
   "form" "label" "input" "button" "select" "datalist" "optgroup" "option" "textarea" "output" "progress" "meter" "fieldset" "legend"
   "details" "summary" "dialog"
-   "script" "noscript" "template" "slot" "canvas")
+  "script" "noscript" "template" "slot" "canvas"))
-)
+
-(content) @none
-(quoted_attribute_value) @string
 (id) @constant
-(class) @constant
+(class) @property
-(attribute_name) @symbol
+
-(
+(doctype) @preproc
-  (attribute_name )  @keyword
+
-  (#match? @keyword "^(:|v-bind|v-|\\@)")
+(content) @none
-) @keyword
+
+(tag
+  (attributes
+    (attribute
+      (attribute_name) @tag.attribute
+      "=" @operator)))
+((tag
+   (attributes
+     (attribute (attribute_name) @keyword)))
+ (#match? @keyword "^(:|v-bind|v-|\\@)"))
+(quoted_attribute_value) @string
+
+(include (keyword) @include)
+(extends (keyword) @include)
+(filename) @string.special
+
+(block_definition (keyword) @keyword)
+(block_append (keyword)+ @keyword)
+(block_prepend (keyword)+ @keyword)
+(block_name) @type
+
+(conditional (keyword) @conditional)
+(case
+  (keyword) @conditional
+  (when (keyword) @conditional)+)
+
+(each (keyword) @repeat)
+(while (keyword) @repeat)
+
+(mixin_use
+  "+" @punctuation.delimiter
+  (mixin_name) @function.call)
+(mixin_definition
+  (keyword) @keyword.function
+  (mixin_name) @function)
+(mixin_attributes
+  (attribute_name) @parameter)
+
+(filter
+  ":" @punctuation.delimiter
+  (filter_name) @method.call)
+(filter
+  (attributes
+    (attribute (attribute_name) @parameter)))
 
 [
-  ":"
+ "(" ")"
-] @punctuation.delimiter
+ "#{" "}"
+ ;; unsupported
+ ; "!{"
+ ; "#[" "]"
+] @punctuation.bracket
+
+[ "," "." "|" ] @punctuation.delimiter
+(buffered_code "=" @punctuation.delimiter)
+(unbuffered_code "-" @punctuation.delimiter)
+(unescaped_buffered_code "!=" @punctuation.delimiter)