enh(perl) fix false-positive variable match at end of string (plus test)

[h3xx]

See #3934 for a full description of this issue.

Includes work from @joshgoebel who hasn't been seen online since 2023-12-01, may he rest in peace, j/k :-)

This PR is basically the same as #3935, except it also adds a markup test for the issue I described in #3934.

Changes

Fixes #3934
Closes #3935

Checklist

• Added markup tests (@h3xx did this)
• Updated the changelog at CHANGES.md (@joshgoebel did this)

[github-actions]

Build Size Report

Changes to minified artifacts in /build, after gzip compression.

1 Removed File

View Changes

file	size
styles/1c-light.min.css	-554 B

12 files changed

Total change -139 B

View Changes

file	base	pr	diff
es/languages/1c.min.js	14.23 KB	14.18 KB	-48 B
es/languages/bash.min.js	1.6 KB	1.6 KB	-4 B
es/languages/javascript.min.js	2.73 KB	2.71 KB	-17 B
es/languages/perl.min.js	2.02 KB	2.02 KB	+8 B
es/languages/swift.min.js	3.54 KB	3.54 KB	+7 B
es/languages/typescript.min.js	3.15 KB	3.14 KB	-16 B
languages/1c.min.js	14.23 KB	14.18 KB	-48 B
languages/bash.min.js	1.61 KB	1.61 KB	-4 B
languages/javascript.min.js	2.74 KB	2.72 KB	-17 B
languages/perl.min.js	2.02 KB	2.02 KB	+9 B
languages/swift.min.js	3.54 KB	3.55 KB	+7 B
languages/typescript.min.js	3.16 KB	3.14 KB	-16 B

[github-actions]

Build Size Report

Changes to minified artifacts in /build, after gzip compression.

2 files changed

Total change +17 B

View Changes

file	base	pr	diff
es/languages/perl.min.js	2.02 KB	2.02 KB	+8 B
languages/perl.min.js	2.02 KB	2.02 KB	+9 B

[joshgoebel]

Thanks!