fix(#652): remove usage of lookbehind regex with wildcard lengths

[alehechka]

Overview

Resolves: a-h/templ#652.

This PR removes the usage of wildcards in all of the lookbehind expressions mentioned in a-h/templ#652.

For (?<=\s*}) lookbehind expressions, most were able to just remove the wildcard \s and work the same. The else expression did need some adjustments however to properly address the syntax highlighting of the match it's covering.

For the script/style elements, these were previously added and later updated to fix inline tags. The way the lookbehind expression was previously used was allowing the #element match to find it first and lookbehind for script/style to start the new match. Instead, I moved #script-element and #style-element above #element in the top-level patterns so they will be matched first and made them more exact matching with proper closing brackets (>). I also copied down the HTML tokens into these captures.

Through testing a few different scenarios of each area I saw no regression, but would be worth a double check from different eyes.

[joerdav]

I think I'll implement some tests using https://github.com/PanAeon/vscode-tmgrammar-test then merge this :)

[joerdav]

Added this here: #50

The diffs are a bit hard to read but I think as long as they don't change thats a good sign I think.

I've only added snapshots, but this package also supports unit style tests.

[joerdav]

@alehechka Can you update your branch with main please?

[alehechka]

@joerdav updated!

[joerdav]

Thanks, @alehechka your changes seem to break the snapshot tests, though they seem to be expected.

You can update the snapshots with xc test-update if you use xc or if not npm run test:update

[alehechka]

@joerdav, sweet, got that fixed! Cool to see that the grammar tests have been added!

[joerdav]

Great thanks! On Monday I'll test this branch out then merge :)