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v3: Don’t break sibling-*() functions when used inside calc(…) #19335

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Merged
merged 4 commits into from
Nov 19, 2025
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Merged

v3: Don’t break sibling-*() functions when used inside calc(…) #19335

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b620a19
Don’t break `sibling-*()` functions when used inside `calc(…)`
thecrypticace Nov 19, 2025
0516602
Update changelog
thecrypticace Nov 19, 2025
5ec3943
Don’t break up custom function names
thecrypticace Nov 19, 2025
de7ac0e
Port math operator handling from v4
thecrypticace Nov 19, 2025
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4 changes: 3 additions & 1 deletion CHANGELOG.md
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Expand Up @@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

- Nothing yet!
### Fixed

- Don’t break `sibling-*()` functions when used inside `calc(…)` ([#19335](https://github.com/tailwindlabs/tailwindcss/pull/19335))

## [3.4.18] - 2024-10-01

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3 changes: 3 additions & 0 deletions src/util/dataTypes.js
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Expand Up @@ -149,6 +149,9 @@ function normalizeMathOperatorSpacing(value) {
'repeating-conic-gradient',

'anchor-size',

'sibling-index',
'sibling-count',
]

return value.replace(/(calc|min|max|clamp)\(.+\)/g, (match) => {
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2 changes: 2 additions & 0 deletions tests/normalize-data-types.test.js
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Expand Up @@ -98,6 +98,8 @@ let table = [

// Prevent formatting functions that are not math functions
['w-[calc(anchor-size(width)+8px)]', 'w-[calc(anchor-size(width) + 8px)]'],
['w-[calc(sibling-index()*1%)]', 'w-[calc(sibling-index() * 1%)]'],
['w-[calc(sibling-count()*1%)]', 'w-[calc(sibling-count() * 1%)]'],

// Misc
['color(0_0_0/1.0)', 'color(0 0 0/1.0)'],
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