feat!: align standard captures with upstream

Problem: Sharing highlight queries with upstream tree-sitter and
Helix is difficult.

Solution: Where reasonable, use capture names in tree-sitter's standard
list or Helix's Atom-style hierarchy.

Specifically:

* tree-sitter "standard capture names"
  (https://github.com/tree-sitter/tree-sitter/blob/3f44b896852eb7daaa6df4fb778c9bb52c70c815/highlight/src/lib.rs#L20-L72):

  - `@parameter` -> `@variable.parameter`
  - `@field` -> `@variable.member`
  - `@namespace` -> `@module`
  - `@float` -> `@number.float`
  - `@symbol` -> `@string.special.symbol`
  - `@string.regex` -> `@string.regexp`
  - `@text.*` -> `@markup.*` (`strong`, `italic`, `link`, `strikethrough`; with exceptions; see below)
  - `@text.title` -> `@markup.heading`
  - `@text.literal` -> `@markup.raw`
  - `@text.reference` -> `@markup.link`
  - `@text.uri` -> `@markup.link.url` (in markup links)
  - `@string.special` -> `@markup.link.label` (non-url links)
  - `@punctuation.special` -> `@markup.list` (markdown lists only; move subitems from `@text.todo`)

* Helix captures
  (https://docs.helix-editor.com/master/themes.html#syntax-highlighting):

  - `@method` -> `@function.method`
  - `@method.call` -> `@function.method.call`
  - `@text.{todo,warning,note,danger}` -> `@comment.{error,warning,hint,info,todo}`
  - `@text.diff.{add,delete,}` -> `@diff.{plus,minus,delta}`
  - `@text.uri` -> `@string.special.url` (outside markup)
  - `@preproc` -> `@keyword.directive`
  - `@define` -> `@keyword.directive`(`.define`?)
  - `@storageclass` -> `@keyword.storage`
  - `@conditional` -> `@keyword.conditional`
  - `@debug` -> `@keyword.debug`
  - `@exception` -> `@keyword.exception`
  - `@include` -> `@keyword.import`
  - `@repeat` -> `@keyword.repeat`

* cleanup

  - remove some redundant `@conceal` (but still allow it for conceal-only patterns)
  - remove obsolete `@error` (syntax linting is out of scope for this repo)
  - sort, cleanup capture list in `CONTRIBUTING.md`

1 files changed, 12 insertions, 12 deletions

diff --git a/queries/perl/highlights.scm b/queries/perl/highlights.scm
index e3aa0b2bb..7a0c4e530 100644
--- a/queries/perl/highlights.scm
+++ b/queries/perl/highlights.scm
@@ -1,13 +1,13 @@
-((source_file . (comment) @preproc)
-  (#lua-match? @preproc "^#!/"))
+((source_file . (comment) @keyword.directive)
+  (#lua-match? @keyword.directive "^#!/"))
 
-[ "use" "no" "require" ] @include
+[ "use" "no" "require" ] @keyword.import
 
-[ "if" "elsif" "unless" "else" ] @conditional
+[ "if" "elsif" "unless" "else" ] @keyword.conditional
 
-(conditional_expression [ "?" ":" ] @conditional.ternary) 
+(conditional_expression [ "?" ":" ] @keyword.conditional.ternary) 
 
-[ "while" "until" "for" "foreach" ] @repeat
+[ "while" "until" "for" "foreach" ] @keyword.repeat
 
 "return" @keyword.return
 
@@ -15,7 +15,7 @@
 
 [ "map" "grep" "sort" ] @function.builtin
 
-"package" @include
+"package" @keyword.import
 
 [
   "do"
@@ -27,7 +27,7 @@
 (_ operator: _ @operator)
 "\\" @operator
 
-(yadayada) @exception
+(yadayada) @keyword.exception
 
 (phaser_statement phase: _ @keyword.phaser)
 
@@ -37,10 +37,10 @@
   "isa"
 ] @keyword.operator
 
-(eof_marker) @preproc
+(eof_marker) @keyword.directive
 (data_section) @comment
 
-(pod) @text
+(pod) @none
 
 [
   (number)
@@ -70,7 +70,7 @@
  (quoted_regexp)
  (match_regexp)
  (regexp_content)
-] @string.regex
+] @string.regexp
 
 (autoquoted_bareword) @string.special
 
@@ -89,7 +89,7 @@
 (relational_expression operator: "isa" right: (bareword) @type)
 
 (function_call_expression (function) @function.call)
-(method_call_expression (method) @method.call)
+(method_call_expression (method) @function.method.call)
 (method_call_expression invocant: (bareword) @type)
 
 (func0op_call_expression function: _ @function.builtin)