less / less/less.js

Cannot override variable imported via :extend()

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#3,706 2 comments 0 reactions 0 assignees View on GitHub

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bug
Dominant language
JavaScript
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Forks
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Avg merge
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Merged PRs (30d)
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Description

To reproduce:

@color: red;

a {
  color: @color;
}

.foo {
  a:extend(a all) {
    @color: green;
  }
}

Current behavior:

.foo a colour is red.

Expected behavior:

.foo a colour is green.

Environment information:

  • less version: 4.1.2
  • nodejs version: v14.15.3
  • operating system: windows

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the provided Less reproduction and compare its current and expected compiled output. Trace how :extend(a all) handles the nested @color declaration and variable scope, then add or update a regression test showing that .foo a uses green rather than red.

Written by the indexing model from the issue text.

Assessment

Tech stack
css, javascript
Domain
frontend, web-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
45/100

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