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Highlight more Perl quoting syntaxes

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This adds highlighting for

- quoting operators qw, qr, and qx, like `qw< some words >`
- angle brackets after a quoting operator, like `q<string>`
- punctuation as quoting delimiter, like `q|string|`
- POD sections, which start with ^=\w and and with ^=cut
- heredocs; the marker can be a bare word, or a quoted word, like

	print <<~ 'EOF'
		single quoted heredoc
	EOF

Closes #3736

No attempt is made to use different highlighting for interpolated (qq or
"") strings just yet. Recognizing quote boundaries is more important.
This commit is contained in:
Johannes Altmanninger 2020-09-18 19:18:39 +02:00
parent dbd7e4da79
commit 19b54a8a6e
1 changed files with 16 additions and 12 deletions
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28
rc/filetype/perl.kak
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@ -37,21 +37,25 @@ provide-module perl %§
add-highlighter shared/perl regions
add-highlighter shared/perl/code default-region group
add-highlighter shared/perl/command region (?<!\$)(?<!\\)` (?<!\\)(\\\\)*` fill meta
add-highlighter shared/perl/double_string region (?<!\$)(?<!\\)" (?<!\\)(\\\\)*" fill string
add-highlighter shared/perl/single_string region (?<!\$)(?<!\\\\)' (?<!\\)(\\\\)*' fill string
add-highlighter shared/perl/comment region (?<!\$)(?<!\\)# $ fill comment
add-highlighter shared/perl/command region (?<!\$)(?<!\\)` (?<!\\)(\\\\)*` fill meta
add-highlighter shared/perl/double_string region (?<!\$)(?<!\\)" (?<!\\)(\\\\)*" fill string
add-highlighter shared/perl/single_string region (?<!\$)(?<!\\\\)' (?<!\\)(\\\\)*' fill string
add-highlighter shared/perl/comment region (?<!\$)(?<!\\)# $ fill comment
add-highlighter shared/perl/regex region m?(?<!/)/[^/\n]+(?=/) /\w? fill meta
add-highlighter shared/perl/sregex region s/[^/\n]+/[^/\n]+(?=/) /\w? fill meta
add-highlighter shared/perl/regex region m?(?<!/)(?<!qr)/[^/\n]+(?=/) /\w? fill meta
add-highlighter shared/perl/sregex region s/[^/\n]+/[^/\n]+(?=/) /\w? fill meta
add-highlighter shared/perl/q1 region -recurse \{ q\{ \} fill string
add-highlighter shared/perl/q2 region -recurse \( q\( \) fill string
add-highlighter shared/perl/q3 region -recurse \[ q\[ \] fill string
add-highlighter shared/perl/quote_brace region -recurse \{ \bq[qrwx]?\{ \} fill string
add-highlighter shared/perl/quote_paren region -recurse \( \bq[qrwx]?\( \) fill string
add-highlighter shared/perl/quote_brack region -recurse \[ \bq[qrwx]?\[ \] fill string
add-highlighter shared/perl/quote_angle region -recurse < \bq[qrwx]?< > fill string
add-highlighter shared/perl/quote_punct region -match-capture '\bq[qwx]?([:;!@#$%^&*|,.?/~=+-])' '(.)' fill string
add-highlighter shared/perl/quote_regex region -match-capture '\bqr([:;!@#$%^&*|,.?/~=+-])' '(.)' fill meta
add-highlighter shared/perl/qq1 region -recurse \{ qq\{ \} fill string
add-highlighter shared/perl/qq2 region -recurse \( qq\( \) fill string
add-highlighter shared/perl/qq3 region -recurse \[ qq\[ \] fill string
add-highlighter shared/perl/double_heredoc region -match-capture <<~?\h*'(\w+)' ^\t*(\w+)\b fill string
add-highlighter shared/perl/single_heredoc region -match-capture <<~?\h*"(\w+)" ^\t*(\w+)\b fill string
add-highlighter shared/perl/bare_heredoc region -match-capture <<~?(\w+) ^\t*(\w+)\b fill string
add-highlighter shared/perl/pod region ^=\w+ ^=cut\b fill string
evaluate-commands %sh{
# Grammar