nvim-treesitter/queries/perl/highlights.scm

((source_file . (comment) @keyword.directive)
  (#lua-match? @keyword.directive "^#!/"))

[ "use" "no" "require" ] @keyword.import

[ "if" "elsif" "unless" "else" ] @keyword.conditional

(conditional_expression [ "?" ":" ] @keyword.conditional.ternary) 

[ "while" "until" "for" "foreach" ] @keyword.repeat

"return" @keyword.return

"sub" @keyword.function

[ "map" "grep" "sort" ] @function.builtin

"package" @keyword.import

[
  "do"
  "my" "our" "local" "state"
  "last" "next" "redo" "goto"
  "undef"
] @keyword

(_ operator: _ @operator)
"\\" @operator

(yadayada) @keyword.exception

(phaser_statement phase: _ @keyword.phaser)

[
  "or" "and"
  "eq" "ne" "cmp" "lt" "le" "ge" "gt"
  "isa"
] @keyword.operator

(eof_marker) @keyword.directive
(data_section) @comment

(pod) @none

[
  (number)
  (version)
] @number

[
  (string_literal) 
  (interpolated_string_literal) 
  (quoted_word_list) 
  (command_string) 
  (heredoc_content)
  (replacement)
  (transliteration_content)
] @string

[
  (heredoc_token)
  (command_heredoc_token)
  (heredoc_end)
] @label

[(escape_sequence) (escaped_delimiter)] @string.escape

(_ modifiers: _ @character.special)
[  
 (quoted_regexp)
 (match_regexp)
 (regexp_content)
] @string.regexp

(autoquoted_bareword) @string.special

(use_statement (package) @type)
(package_statement (package) @type)
(require_expression (bareword) @type)

(subroutine_declaration_statement name: (bareword) @function)
(attribute_name) @attribute
(attribute_value) @string

(label) @label

(statement_label label: _ @label)

(relational_expression operator: "isa" right: (bareword) @type)

(function_call_expression (function) @function.call)
(method_call_expression (method) @function.method.call)
(method_call_expression invocant: (bareword) @type)

(func0op_call_expression function: _ @function.builtin)
(func1op_call_expression function: _ @function.builtin)

; this was a regex for the CLI
([(function)(expression_statement (bareword))] @function.builtin
 (#any-of? @function.builtin
  "accept" "atan2" "bind" "binmode" "bless" "crypt" "chmod" "chown" "connect"
  "die" "dbmopen" "exec" "fcntl" "flock" "formline" "getpriority"
  "getprotobynumber" "gethostbyaddr" "getnetbyaddr" "getservbyname"
  "getservbyport" "getsockopt" "glob" "index" "ioctl" "join" "kill" "link"
  "listen" "mkdir" "msgctl" "msgget" "msgrcv" "msgsend" "open" "opendir"
  "print" "printf" "push" "pack" "pipe" "return" "rename" "rindex" "read"
  "recv" "reverse" "say" "select" "seek" "semctl" "semget" "semop" "send"
  "setpgrp" "setpriority" "seekdir" "setsockopt" "shmctl" "shmread" "shmwrite"
  "shutdown" "socket" "socketpair" "split" "sprintf" "splice" "substr" "system"
  "symlink" "syscall" "sysopen" "sysseek" "sysread" "syswrite" "tie" "truncate"
  "unlink" "unpack" "utime" "unshift" "vec" "warn"
  "waitpid"
))

(function) @function

(_
  "{" @punctuation.special
  (varname)
  "}" @punctuation.special)

(varname 
  (block
    "{" @punctuation.special 
    "}" @punctuation.special))


([(varname) (filehandle)] @variable.builtin
  (#any-of? @variable.builtin "ENV" "ARGV" "INC" "ARGVOUT" "SIG" "STDIN" "STDOUT" "STDERR" "a" "b" "_"))
((varname) @variable.builtin
  ; highlights all the reserved ^ vars like ${^THINGS}
  (#lua-match? @variable.builtin "%^"))
((varname) @variable.builtin
  ; highlights punc vars and also numeric only like $11
  (#lua-match? @variable.builtin "^%A+$"))


(scalar) @variable.scalar
(scalar_deref_expression [ "$" "*"] @variable.scalar)
[(array) (arraylen)] @variable.array
(array_deref_expression [ "@" "*"] @variable.array)
(hash) @variable.hash
(hash_deref_expression [ "%" "*"] @variable.hash)

(array_element_expression array:(_) @variable.array)
(slice_expression array:(_) @variable.array)
(keyval_expression array:(_) @variable.array)

(hash_element_expression hash:(_) @variable.hash)
(slice_expression hash:(_) @variable.hash)
(keyval_expression hash:(_) @variable.hash)

(comment) @comment

([ "=>" "," ";" "->" ] @punctuation.delimiter)

(
  [ "[" "]" "{" "}" "(" ")" ] @punctuation.bracket
  ; priority hack so nvim + ts-cli behave the same
  (#set! "priority" 90))