From 6256d94b8f404e9e4b0d4fd026500b63a8ab1afe Mon Sep 17 00:00:00 2001
From: Juriy Zaytsev <kangax@gmail.com>
Date: Mon, 8 Feb 2010 18:57:34 -0500
Subject: [PATCH] Collapse whitespace in class attributes to 1 space (not only
 trim).

---
 src/htmlminifier.js | 3 ++-
 tests/index.html    | 3 +++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/htmlminifier.js b/src/htmlminifier.js
index 4615877..6a4bda9 100644
--- a/src/htmlminifier.js
+++ b/src/htmlminifier.js
@@ -66,7 +66,8 @@
       return attrValue.replace(/^(['"])?javascript:/i, '$1');
     }
     if (attrName.toLowerCase() === 'class') {
-      return attrValue.replace(/^(["'])?\s+/, '$1').replace(/\s+(["'])?$/, '$1');
+      // trim and collapse whitesapce
+      return attrValue.replace(/^(["'])?\s+/, '$1').replace(/\s+(["'])?$/, '$1').replace(/\s+/g, ' ');
     }
     return attrValue;
   }
diff --git a/tests/index.html b/tests/index.html
index 5d2620e..1e75ad9 100644
--- a/tests/index.html
+++ b/tests/index.html
@@ -95,6 +95,9 @@
           
           input = '<p class="\n  \n foo   \n\n\t  \t\n   ">foo bar baz</p>';
           equals(minify(input, { shouldCleanAttributes: true }), '<p class="foo">foo bar baz</p>');
+          
+          input = '<p class="\n  \n foo   \n\n\t  \t\n  class1 class-23 ">foo bar baz</p>';
+          equals(minify(input, { shouldCleanAttributes: true }), '<p class="foo class1 class-23">foo bar baz</p>');
         });
         
       })(this);
-- 
2.34.1