Missing classes because of `{` boundary and new extractor

[iquito]

What version of Tailwind CSS are you using?

v4.0.11

Reproduction

With the new extractor (#16306) the class h-4 and mx-4 is not picked up anymore when using the following Twig template content:

<div class="flex items-center mx-4{% if session.isValid %}{% else %} h-4{% endif %}"></div>

(See https://play.tailwindcss.com/w3SazyVehg for the example on Tailwind Play and the generated CSS)

I assume the { after h-4 and mx-4 is somehow not considered a (possible) boundary anymore. I think this is likely a bug, as many template languages use { and } as delimiters in some way, so the possibility of a boundary should be taken into account.

[RobinMalfait]

Hey!

Yep this is indeed a regression will provide a fix soon. Small note: in Tailwind Play this will not work even after the fix because we only look at the class attribute without "running" your code. But in your real projects it will be fixed with the incoming PR.

[RobinMalfait]

Hey! Small update, this has been fixed by #17001 and will be available in the next release tomorrow.