less / less/less.js

ParseError: Unrecognised input in with « DIV { width: 500px\9 } »

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

Parsing success with :

DIV {
    width: 500px\9;
}

ParseError: Unrecognised input in with :

DIV { width: 500px\9 }

You can found this syntax in https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css

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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 two CSS snippets shown in the issue with the Less parser, comparing the version with and without the trailing semicolon. Trace the parser path for declarations containing the \9 escape, and add coverage so both forms parse successfully without a ParseError.

Written by the indexing model from the issue text.

Assessment

Tech stack
css, javascript
Domain
compilers, frontend
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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