Fix #3698 #3373 - parsing variables fail when there is no trailing semicolon#3700
Merged
matthew-dean merged 1 commit intoless:masterfrom Jan 15, 2023
Merged
Fix #3698 #3373 - parsing variables fail when there is no trailing semicolon#3700matthew-dean merged 1 commit intoless:masterfrom
matthew-dean merged 1 commit intoless:masterfrom
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Member
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Oh, thanks for taking a look at this! |
matthew-dean
approved these changes
May 4, 2022
iChenLei
approved these changes
May 5, 2022
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Hi, Can we merge this pr? |
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same here，can we merge this ? |
Member
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ping @matthew-dean |
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Hi, is there any chance we can get a release of less with this fix in soon please? |
wmfgerrit
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Mar 21, 2025
see less/less.js#3700 Bug: T386077 Change-Id: I60c0ddad9a85409b6b2ac5ecf3fab00cd8876157
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What:
Added a fix for the parser crashing when a css variable property does not end with a semicolon. Fixes #3698 and Fixes #3373.
Why:
This helps to avoid crashes when importing pre-minified css files from e.g. an npm package. In our case, cssnano always drops the trailing semicolon on the last property. This cannot be disabled without disabling all of whitespace normalization (
normalizeWhitespaceoption). Fixing the bug in Less.js fixes this use case for us.How:
When calling
permissiveValueon a detected css variable, theuntilTokensparameter is left unset. This defaults it to detecting;for ending the value. I've set the parameter to/[;}]/instead in order to close variables on either the semicolon (;) or the closing curly bracket (}) character. This may not be the most optimal fix, but it gets the job done in the test cases I've added. Additionally, it doesn't break any of the existing test cases.Checklist: