From 6437f15d96755e77670991956314f8c7d7965ea7 Mon Sep 17 00:00:00 2001
From: uhyo <uhyo@uhy.ooo>
Date: Fri, 26 May 2023 15:05:09 +0900
Subject: [PATCH 1/4] add failing tests

---
 tests/lib/rules/no-custom-classname.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tests/lib/rules/no-custom-classname.js b/tests/lib/rules/no-custom-classname.js
index f20988c3..9db2fc7d 100644
--- a/tests/lib/rules/no-custom-classname.js
+++ b/tests/lib/rules/no-custom-classname.js
@@ -1354,5 +1354,13 @@ ruleTester.run("no-custom-classname", rule, {
       ],
       errors: generateErrors("yolo custom"),
     },
+    {
+      code: `<div className="px-1\u3000py-2">Full-width space between classes</div>`,
+      errors: generateErrors("px-1\u3000py-2"),
+    },
+    {
+      code: `<div className="\u3000px-1 py-2\u3000">Full-width space before and after classes</div>`,
+      errors: generateErrors("\u3000px-1 py-2\u3000"),
+    },
   ],
 });

From fd8281afb8f982d7cf2b0cf56a1bbadab65801fd Mon Sep 17 00:00:00 2001
From: uhyo <uhyo@uhy.ooo>
Date: Fri, 26 May 2023 15:14:03 +0900
Subject: [PATCH 2/4] test passes

---
 lib/util/ast.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/util/ast.js b/lib/util/ast.js
index 21c025e8..fea7cb07 100644
--- a/lib/util/ast.js
+++ b/lib/util/ast.js
@@ -217,7 +217,7 @@ function extractClassnamesFromValue(classStr) {
   if (typeof classStr !== 'string') {
     return { classNames: [], whitespaces: [], headSpace: false, tailSpace: false };
   }
-  const separatorRegEx = /(\s+)/;
+  const separatorRegEx = /([\t\n\f\r ]+)/;
   let parts = classStr.split(separatorRegEx);
   if (parts[0] === '') {
     parts.shift();

From 96b8e91dadb211e68dd33da1aac829263f5c24c4 Mon Sep 17 00:00:00 2001
From: uhyo <uhyo@uhy.ooo>
Date: Fri, 26 May 2023 15:17:17 +0900
Subject: [PATCH 3/4] add failing test

---
 tests/lib/rules/classnames-order.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tests/lib/rules/classnames-order.js b/tests/lib/rules/classnames-order.js
index 286ddf0a..2d0cf80a 100644
--- a/tests/lib/rules/classnames-order.js
+++ b/tests/lib/rules/classnames-order.js
@@ -913,7 +913,7 @@ ruleTester.run("classnames-order", rule, {
       code: `
       <template>
         <div v-bind="data" :class="[
-          'py-1.5 font-semibold transition', 
+          'py-1.5 font-semibold transition',
           {
             'text-white': variant === 'white',
             'text-blue-500 hover:text-blue-400 border-blue-500': variant === 'primary',
@@ -924,7 +924,7 @@ ruleTester.run("classnames-order", rule, {
       output: `
       <template>
         <div v-bind="data" :class="[
-          'py-1.5 font-semibold transition', 
+          'py-1.5 font-semibold transition',
           {
             'text-white': variant === 'white',
             'border-blue-500 text-blue-500 hover:text-blue-400': variant === 'primary',
@@ -941,5 +941,10 @@ ruleTester.run("classnames-order", rule, {
       output: `<div class="group/edit:stroke-0 block">support named group/peer syntax</div>`,
       errors: errors,
     },
+    {
+      code: `<div class="group-hover:edit:stroke-0 py-1\u3000px-2">Do not treat full width space as class separator</div>`,
+      output: `<div class="py-1\u3000px-2 group-hover:edit:stroke-0">Do not treat full width space as class separator</div>`,
+      errors: errors,
+    },
   ],
 });

From 143479e5daf08221dff258587e5dcdc925393d10 Mon Sep 17 00:00:00 2001
From: uhyo <uhyo@uhy.ooo>
Date: Fri, 26 May 2023 15:21:14 +0900
Subject: [PATCH 4/4] fix

---
 lib/util/prettier/order.js          | 2 +-
 tests/lib/rules/classnames-order.js | 8 +++-----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/lib/util/prettier/order.js b/lib/util/prettier/order.js
index c3ec785b..a3853055 100644
--- a/lib/util/prettier/order.js
+++ b/lib/util/prettier/order.js
@@ -45,7 +45,7 @@ function sortClasses(classStr, { env, ignoreFirst = false, ignoreLast = false })
   }
 
   let result = '';
-  let parts = classStr.split(/(\s+)/);
+  let parts = classStr.split(/([\t\n\f\r ]+)/);
   let classes = parts.filter((_, i) => i % 2 === 0);
   let whitespace = parts.filter((_, i) => i % 2 !== 0);
 
diff --git a/tests/lib/rules/classnames-order.js b/tests/lib/rules/classnames-order.js
index 2d0cf80a..894367ce 100644
--- a/tests/lib/rules/classnames-order.js
+++ b/tests/lib/rules/classnames-order.js
@@ -278,6 +278,9 @@ ruleTester.run("classnames-order", rule, {
       `,
       options: skipClassAttributeOptions,
     },
+    {
+      code: `<div class="py-1\u3000px-2 block">Do not treat full width space as class separator</div>`,
+    },
   ],
   invalid: [
     {
@@ -941,10 +944,5 @@ ruleTester.run("classnames-order", rule, {
       output: `<div class="group/edit:stroke-0 block">support named group/peer syntax</div>`,
       errors: errors,
     },
-    {
-      code: `<div class="group-hover:edit:stroke-0 py-1\u3000px-2">Do not treat full width space as class separator</div>`,
-      output: `<div class="py-1\u3000px-2 group-hover:edit:stroke-0">Do not treat full width space as class separator</div>`,
-      errors: errors,
-    },
   ],
 });