Fix multiple <alpha-value> in color definitions (#13740)

* Fix multiple <alpha-value> in color definitions

Fixes #13716

* Update CHANGELOG.md

* Use `replace` with global regex

---------

Co-authored-by: Jordan Pittman <[email protected]>

Author: barvian

CHANGELOG.md

@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- Nothing yet!
+### Fixed
+
+- Make it possible to use multiple `<alpha-value>` placeholders in a single color definition ([#13740](https://github.com/tailwindlabs/tailwindcss/pull/13740))
 
 ## [3.4.3] - 2024-03-27
 

src/util/pluginUtils.js

@@ -124,7 +124,7 @@ export function parseColorFormat(value) {
   if (typeof value === 'string' && value.includes('<alpha-value>')) {
     let oldValue = value
 
-    return ({ opacityValue = 1 }) => oldValue.replace('<alpha-value>', opacityValue)
+    return ({ opacityValue = 1 }) => oldValue.replace(/<alpha-value>/g, opacityValue)
   }
 
   return value

tests/opacity.test.js

@@ -673,6 +673,30 @@ it('should be possible to use an <alpha-value> as part of the color definition w
   })
 })
 
+it('should be possible to use multiple <alpha-value>s as part of the color definition with an opacity modifiers', () => {
+  let config = {
+    content: [
+      {
+        raw: html` <div class="bg-primary/50"></div> `,
+      },
+    ],
+    corePlugins: ['backgroundColor'],
+    theme: {
+      colors: {
+        primary: 'light-dark(rgb(0 0 0 / <alpha-value>), rgb(255 255 255 / <alpha-value>))',
+      },
+    },
+  }
+
+  return run('@tailwind utilities', config).then((result) => {
+    expect(result.css).toMatchFormattedCss(css`
+      .bg-primary\/50 {
+        background-color: light-dark(rgb(0 0 0 / 0.5), rgb(255 255 255 / 0.5));
+      }
+    `)
+  })
+})
+
 it('should be possible to use an <alpha-value> as part of the color definition with an opacity modifiers', () => {
   let config = {
     content: [