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postcss-custom-properties v14.0.5 hangs #1621

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@thedanbob

Description

@thedanbob

Reproduction link

https://gist.github.com/thedanbob/0aefa7966ab0414c417f78abaedc8845

Bug description

postcss-custom-properties v14.0.5 hangs while processing Bootstrap css, specifically properties with comments before the semicolon.

Actual Behavior

No response

Expected Behavior

No response

Can you reproduce it with npx @csstools/csstools-cli <plugin-name> minimal-example.css?

Yes

npx Output

No output, process hangs

Extra config

No response

What plugin are you experiencing this issue on?

PostCSS Custom Properties

Plugin version

14.0.5

What OS are you experiencing this on?

Linux

Node Version

22, 24

Validations

  • Follow our Code of Conduct
  • Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

Would you like to open a PR for this bug?

  • I'm willing to open a PR

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