Fix declaration-property-value-no-unknown false positives for attr() and if()
#8853
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🦋 Changeset detectedLatest commit: 9112ed8 The changes in this PR will be included in the next version bump. This PR includes changesets to release 1 package
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Pushed a commit to ignore parse errors on a case-by-case basis, rather than ignoring them all. |
ybiquitous
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Nov 27, 2025
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LGTM 👍🏼
Fine to merge this after adding a changelog.
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| datasource | package | from | to | | ---------- | --------- | ------- | ------- | | npm | stylelint | 16.26.0 | 16.26.1 | ## [v16.26.1](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#16261---2025-11-28) It fixes numerous false positive bugs, including many in the `declaration-property-value-no-unknown` rule for the latest CSS specifications. - Fixed: `*-no-unknown` false positives for latest specs by integrating `@csstools/css-syntax-patches-for-csstree` ([#8850](stylelint/stylelint#8850)) ([@romainmenke](https://github.com/romainmenke)). - Fixed: `at-rule-no-unknown` false positives for `@function` ([#8851](stylelint/stylelint#8851)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `declaration-property-value-no-unknown` false positives for `attr()`, `if()` and custom functions ([#8853](stylelint/stylelint#8853)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `function-url-quotes` false positives when URLs require quoting ([#8804](stylelint/stylelint#8804)) ([@taearls](https://github.com/taearls)). - Fixed: `selector-pseudo-element-no-unknown` false positives for `::scroll-button()` ([#8856](stylelint/stylelint#8856)) ([@Mouvedia](https://github.com/Mouvedia)).
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| datasource | package | from | to | | ---------- | --------- | ------- | ------- | | npm | stylelint | 16.26.0 | 16.26.1 | ## [v16.26.1](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#16261---2025-11-28) It fixes numerous false positive bugs, including many in the `declaration-property-value-no-unknown` rule for the latest CSS specifications. - Fixed: `*-no-unknown` false positives for latest specs by integrating `@csstools/css-syntax-patches-for-csstree` ([#8850](stylelint/stylelint#8850)) ([@romainmenke](https://github.com/romainmenke)). - Fixed: `at-rule-no-unknown` false positives for `@function` ([#8851](stylelint/stylelint#8851)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `declaration-property-value-no-unknown` false positives for `attr()`, `if()` and custom functions ([#8853](stylelint/stylelint#8853)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `function-url-quotes` false positives when URLs require quoting ([#8804](stylelint/stylelint#8804)) ([@taearls](https://github.com/taearls)). - Fixed: `selector-pseudo-element-no-unknown` false positives for `::scroll-button()` ([#8856](stylelint/stylelint#8856)) ([@Mouvedia](https://github.com/Mouvedia)).
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| datasource | package | from | to | | ---------- | --------- | ------- | ------- | | npm | stylelint | 16.26.0 | 16.26.1 | ## [v16.26.1](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#16261---2025-11-28) It fixes numerous false positive bugs, including many in the `declaration-property-value-no-unknown` rule for the latest CSS specifications. - Fixed: `*-no-unknown` false positives for latest specs by integrating `@csstools/css-syntax-patches-for-csstree` ([#8850](stylelint/stylelint#8850)) ([@romainmenke](https://github.com/romainmenke)). - Fixed: `at-rule-no-unknown` false positives for `@function` ([#8851](stylelint/stylelint#8851)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `declaration-property-value-no-unknown` false positives for `attr()`, `if()` and custom functions ([#8853](stylelint/stylelint#8853)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `function-url-quotes` false positives when URLs require quoting ([#8804](stylelint/stylelint#8804)) ([@taearls](https://github.com/taearls)). - Fixed: `selector-pseudo-element-no-unknown` false positives for `::scroll-button()` ([#8856](stylelint/stylelint#8856)) ([@Mouvedia](https://github.com/Mouvedia)).
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| datasource | package | from | to | | ---------- | --------- | ------- | ------- | | npm | stylelint | 16.26.0 | 16.26.1 | ## [v16.26.1](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#16261---2025-11-28) It fixes numerous false positive bugs, including many in the `declaration-property-value-no-unknown` rule for the latest CSS specifications. - Fixed: `*-no-unknown` false positives for latest specs by integrating `@csstools/css-syntax-patches-for-csstree` ([#8850](stylelint/stylelint#8850)) ([@romainmenke](https://github.com/romainmenke)). - Fixed: `at-rule-no-unknown` false positives for `@function` ([#8851](stylelint/stylelint#8851)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `declaration-property-value-no-unknown` false positives for `attr()`, `if()` and custom functions ([#8853](stylelint/stylelint#8853)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `function-url-quotes` false positives when URLs require quoting ([#8804](stylelint/stylelint#8804)) ([@taearls](https://github.com/taearls)). - Fixed: `selector-pseudo-element-no-unknown` false positives for `::scroll-button()` ([#8856](stylelint/stylelint#8856)) ([@Mouvedia](https://github.com/Mouvedia)).
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| datasource | package | from | to | | ---------- | --------- | ------- | ------- | | npm | stylelint | 16.26.0 | 16.26.1 | ## [v16.26.1](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#16261---2025-11-28) It fixes numerous false positive bugs, including many in the `declaration-property-value-no-unknown` rule for the latest CSS specifications. - Fixed: `*-no-unknown` false positives for latest specs by integrating `@csstools/css-syntax-patches-for-csstree` ([#8850](stylelint/stylelint#8850)) ([@romainmenke](https://github.com/romainmenke)). - Fixed: `at-rule-no-unknown` false positives for `@function` ([#8851](stylelint/stylelint#8851)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `declaration-property-value-no-unknown` false positives for `attr()`, `if()` and custom functions ([#8853](stylelint/stylelint#8853)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `function-url-quotes` false positives when URLs require quoting ([#8804](stylelint/stylelint#8804)) ([@taearls](https://github.com/taearls)). - Fixed: `selector-pseudo-element-no-unknown` false positives for `::scroll-button()` ([#8856](stylelint/stylelint#8856)) ([@Mouvedia](https://github.com/Mouvedia)).
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| datasource | package | from | to | | ---------- | --------- | ------- | ------- | | npm | stylelint | 16.26.0 | 16.26.1 | ## [v16.26.1](https://github.com/stylelint/stylelint/blob/HEAD/CHANGELOG.md#16261---2025-11-28) It fixes numerous false positive bugs, including many in the `declaration-property-value-no-unknown` rule for the latest CSS specifications. - Fixed: `*-no-unknown` false positives for latest specs by integrating `@csstools/css-syntax-patches-for-csstree` ([#8850](stylelint/stylelint#8850)) ([@romainmenke](https://github.com/romainmenke)). - Fixed: `at-rule-no-unknown` false positives for `@function` ([#8851](stylelint/stylelint#8851)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `declaration-property-value-no-unknown` false positives for `attr()`, `if()` and custom functions ([#8853](stylelint/stylelint#8853)) ([@jeddy3](https://github.com/jeddy3)). - Fixed: `function-url-quotes` false positives when URLs require quoting ([#8804](stylelint/stylelint#8804)) ([@taearls](https://github.com/taearls)). - Fixed: `selector-pseudo-element-no-unknown` false positives for `::scroll-button()` ([#8856](stylelint/stylelint#8856)) ([@Mouvedia](https://github.com/Mouvedia)).
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Closes #8779
We typically favour false negatives over false positives.
The change feels appropriate for csstree's release cadence and can be part of the upcoming patch release that reduces the number of false positives for
*-no-unknownrules.