What version of Tailwind CSS are you using?

v4.0.12

What build tool (or framework if it abstracts the build tool) are you using?

@tailwindcss/cli

What version of Node.js are you using?

v22.12.0

What browser are you using?

Brave 1.76.73

What operating system are you using?

macOS 15

Reproduction URL

https://github.com/ledermann/tailwind-4.0.12-slim-issue

Describe your issue

Similar to #16975 and #16998, there is another issue with SLIM templates. With 4.0.12, the parser fails to handle single quotes (used to enforce trailing white space).

See this example:

div 'A single quote enforces trailing white space = 1234 .text-red-500.text-3xl | This text should be red

Here, the class text-red-500 is not processed.