less / less/less.js

Less confused about `max() + calc()`

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#3,604 3 comments 0 reactions 0 assignees View on GitHub

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bug
Dominant language
JavaScript
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Merged PRs (30d)
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Description

$ lessc --version
lessc 4.1.1 (Less Compiler) [JavaScript]
$ lessc  <(echo 'body { padding: max(1em, calc(50vw - 25rem)); } ')
body {
  padding: 1em;
}

Expected output:

body {
  padding: max(1em, calc(50vw - 25rem));
}

Any subset of the expression (e.g. max(1em, 50vw) or calc(50vw - 25rem)) works fine.

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the issue with the shown lessc command and the combined max()/calc() expression. Trace how lessc evaluates this expression compared with the working subsets, then verify that the expected max(1em, calc(50vw - 25rem)) output is preserved.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
compilers
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
45/100

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