Do not allow variants to end with - or _
#18872
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Co-Authored-By: Jordan Pittman <thecrypticace@gmail.com>
Co-Authored-By: Jordan Pittman <thecrypticace@gmail.com>
Test that `@custom-variant` cannot end with `-` or `__` Co-Authored-By: Jordan Pittman <thecrypticace@gmail.com>
Co-Authored-By: Jordan Pittman <thecrypticace@gmail.com>
Co-Authored-By: Jordan Pittman <thecrypticace@gmail.com>
thecrypticace
approved these changes
Sep 3, 2025
RobinMalfait
deleted the
fix/disallow-variants-ending-in-dash-or-underscore
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ch4og
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Nov 18, 2025
This PR contains the following updates: | Package | Change | Age | Confidence | |---|---|---|---| | [@tailwindcss/postcss](https://tailwindcss.com) ([source](https://github.com/tailwindlabs/tailwindcss/tree/HEAD/packages/@tailwindcss-postcss)) | [`4.1.12` -> `4.1.17`](https://renovatebot.com/diffs/npm/@tailwindcss%2fpostcss/4.1.12/4.1.17) | [](https://docs.renovatebot.com/merge-confidence/) | [](https://docs.renovatebot.com/merge-confidence/) | --- ### Release Notes <details> <summary>tailwindlabs/tailwindcss (@​tailwindcss/postcss)</summary> ### [`v4.1.17`](https://github.com/tailwindlabs/tailwindcss/blob/HEAD/CHANGELOG.md#4117---2025-11-06) [Compare Source](tailwindlabs/tailwindcss@v4.1.16...v4.1.17) ##### Fixed - Substitute `@variant` inside legacy JS APIs ([#​19263](tailwindlabs/tailwindcss#19263)) - Prevent occasional crash on Windows when loaded into a worker thread ([#​19242](tailwindlabs/tailwindcss#19242)) ### [`v4.1.16`](https://github.com/tailwindlabs/tailwindcss/blob/HEAD/CHANGELOG.md#4116---2025-10-23) [Compare Source](tailwindlabs/tailwindcss@v4.1.15...v4.1.16) ##### Fixed - Discard candidates with an empty data type ([#​19172](tailwindlabs/tailwindcss#19172)) - Fix canonicalization of arbitrary variants with attribute selectors ([#​19176](tailwindlabs/tailwindcss#19176)) - Fix invalid colors due to nested `&` ([#​19184](tailwindlabs/tailwindcss#19184)) - Improve canonicalization for `& > :pseudo` and `& :pseudo` arbitrary variants ([#​19178](tailwindlabs/tailwindcss#19178)) ### [`v4.1.15`](https://github.com/tailwindlabs/tailwindcss/blob/HEAD/CHANGELOG.md#4115---2025-10-20) [Compare Source](tailwindlabs/tailwindcss@v4.1.14...v4.1.15) ##### Fixed - Fix Safari devtools rendering issue due to `color-mix` fallback ([#​19069](tailwindlabs/tailwindcss#19069)) - Suppress Lightning CSS warnings about `:deep`, `:slotted`, and `:global` ([#​19094](tailwindlabs/tailwindcss#19094)) - Fix resolving theme keys when starting with the name of another theme key in JS configs and plugins ([#​19097](tailwindlabs/tailwindcss#19097)) - Allow named groups in combination with `not-*`, `has-*`, and `in-*` ([#​19100](tailwindlabs/tailwindcss#19100)) - Prevent important utilities from affecting other utilities ([#​19110](tailwindlabs/tailwindcss#19110)) - Don’t index into strings with the `theme(…)` function ([#​19111](tailwindlabs/tailwindcss#19111)) - Fix parsing issue when `\t` is used in at-rules ([#​19130](tailwindlabs/tailwindcss#19130)) - Upgrade: Canonicalize utilities containing `0` values ([#​19095](tailwindlabs/tailwindcss#19095)) - Upgrade: Migrate deprecated `break-words` to `wrap-break-word` ([#​19157](tailwindlabs/tailwindcss#19157)) ##### Changed - Remove the `postinstall` script from oxide (\[[#​19149](https://github.com/tailwindlabs/tailwindcss/issues/19149)])([#​19149](https://github.com/tailwindlabs/tailwindcss/pull/19149)) ### [`v4.1.14`](https://github.com/tailwindlabs/tailwindcss/blob/HEAD/CHANGELOG.md#4114---2025-10-01) [Compare Source](tailwindlabs/tailwindcss@v4.1.13...v4.1.14) ##### Fixed - Handle `'` syntax in ClojureScript when extracting classes ([#​18888](tailwindlabs/tailwindcss#18888)) - Handle `@variant` inside `@custom-variant` ([#​18885](tailwindlabs/tailwindcss#18885)) - Merge suggestions when using `@utility` ([#​18900](tailwindlabs/tailwindcss#18900)) - Ensure that file system watchers created when using the CLI are always cleaned up ([#​18905](tailwindlabs/tailwindcss#18905)) - Do not generate `grid-column` utilities when configuring `grid-column-start` or `grid-column-end` ([#​18907](tailwindlabs/tailwindcss#18907)) - Do not generate `grid-row` utilities when configuring `grid-row-start` or `grid-row-end` ([#​18907](tailwindlabs/tailwindcss#18907)) - Prevent duplicate CSS when overwriting a static utility with a theme key ([#​18056](tailwindlabs/tailwindcss#18056)) - Show Lightning CSS warnings (if any) when optimizing/minifying ([#​18918](tailwindlabs/tailwindcss#18918)) - Use `default` export condition for `@tailwindcss/vite` ([#​18948](tailwindlabs/tailwindcss#18948)) - Re-throw errors from PostCSS nodes ([#​18373](tailwindlabs/tailwindcss#18373)) - Detect classes in markdown inline directives ([#​18967](tailwindlabs/tailwindcss#18967)) - Ensure files with only `@theme` produce no output when built ([#​18979](tailwindlabs/tailwindcss#18979)) - Support Maud templates when extracting classes ([#​18988](tailwindlabs/tailwindcss#18988)) - Upgrade: Do not migrate `variant = 'outline'` during upgrades ([#​18922](tailwindlabs/tailwindcss#18922)) - Upgrade: Show version mismatch (if any) when running upgrade tool ([#​19028](tailwindlabs/tailwindcss#19028)) - Upgrade: Ensure first class inside `className` is migrated ([#​19031](tailwindlabs/tailwindcss#19031)) - Upgrade: Migrate classes inside `*ClassName` and `*Class` attributes ([#​19031](tailwindlabs/tailwindcss#19031)) ### [`v4.1.13`](https://github.com/tailwindlabs/tailwindcss/blob/HEAD/CHANGELOG.md#4113---2025-09-03) [Compare Source](tailwindlabs/tailwindcss@v4.1.12...v4.1.13) ##### Changed - Drop warning from browser build ([#​18731](tailwindlabs/tailwindcss#18731)) - Drop exact duplicate declarations when emitting CSS ([#​18809](tailwindlabs/tailwindcss#18809)) ##### Fixed - Don't transition `visibility` when using `transition` ([#​18795](tailwindlabs/tailwindcss#18795)) - Discard matched variants with unknown named values ([#​18799](tailwindlabs/tailwindcss#18799)) - Discard matched variants with non-string values ([#​18799](tailwindlabs/tailwindcss#18799)) - Show suggestions for known `matchVariant` values ([#​18798](tailwindlabs/tailwindcss#18798)) - Replace deprecated `clip` with `clip-path` in `sr-only` ([#​18769](tailwindlabs/tailwindcss#18769)) - Hide internal fields from completions in `matchUtilities` ([#​18820](tailwindlabs/tailwindcss#18820)) - Ignore `.vercel` folders by default (can be overridden by `@source …` rules) ([#​18855](tailwindlabs/tailwindcss#18855)) - Consider variants starting with `@-` to be invalid (e.g. `@-2xl:flex`) ([#​18869](tailwindlabs/tailwindcss#18869)) - Do not allow custom variants to start or end with a `-` or `_` ([#​18867](tailwindlabs/tailwindcss#18867), [#​18872](tailwindlabs/tailwindcss#18872)) - Upgrade: Migrate `aria` theme keys to `@custom-variant` ([#​18815](tailwindlabs/tailwindcss#18815)) - Upgrade: Migrate `data` theme keys to `@custom-variant` ([#​18816](tailwindlabs/tailwindcss#18816)) - Upgrade: Migrate `supports` theme keys to `@custom-variant` ([#​18817](tailwindlabs/tailwindcss#18817)) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS4xNDguNCIsInVwZGF0ZWRJblZlciI6IjQyLjAuMyIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==--> Reviewed-on: https://git.in.csmpro.ru/csmpro/csm-mapban/pulls/28 Co-authored-by: Renovate Bot <renovate@csmpro.ru> Co-committed-by: Renovate Bot <renovate@csmpro.ru>
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This PR is a followup of #18867, but this time we won't allow
@custom-variantto end with-or_.The same reasoning applies here where Oxide doesn't pick this up but Intellisense and Tailwind CSS' core does.