fixed issue 20: IE6 collapses adjacent <br>s.

Author: [email protected]

src/prettify.js

@@ -1050,7 +1050,10 @@ if (patternParts[2]) { console.log(uneval(patternParts)); }
         // Keep track of whether we need to escape space at the beginning of the
         // next chunk.
         lastWasSpace = trailingSpaceRe.test(htmlChunk);
-        html.push(htmlChunk.replace(newlineRe, '<br />'));
+        // IE collapses multiple adjacient <br>s into 1 line break.
+        // Prefix every <br> with '&nbsp;' can prevent such IE's behavior.
+        var lineBreakHtml = window['_pr_isIE6']() ? '&nbsp;<br />' : '<br />';
+        html.push(htmlChunk.replace(newlineRe, lineBreakHtml));
         outputIdx = sourceIdx;
       }
     }

tests/test_base.js

@@ -1,7 +1,7 @@
 // get accurate timing.
 // This file must be loaded after prettify.js for this to work.
 PR_SHOULD_USE_CONTINUATION = false;
-if (!/[?&]testcopypaste\b/.test(location.search)) {
+if (!/\btestcopypaste\b/.test(location.fragment)) {
   _pr_isIE6 = function() { return false; };  // Ensure consistent output.
 }