Mixin followed by !important is not correctly compiled
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- Dominant language
- JavaScript
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Description
Hi,
I have noticed a inconsistency between the documentation and the functioning of less.
In the documentation, adding !important to the mixin should result in the !important being added to all the css declarations inside the mixin. However, this is not the case. Upon compiling, the css does not contain the !important.

Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the documented mixin behavior with a minimal Less example and compare the compiled CSS with the expected declarations. Trace the mixin compilation path, then add a regression test showing that applying !important to the mixin adds it to every declaration inside the mixin.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- css, javascript
- Domain
- frontend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100