Index: modules/search/search.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/search/search.module,v
retrieving revision 1.254
diff -u -F^f -r1.254 search.module
--- modules/search/search.module	14 Apr 2008 17:48:41 -0000	1.254
+++ modules/search/search.module	15 Apr 2008 10:40:19 -0000
@@ -330,7 +330,7 @@ function search_simplify($text) {
 
   // The dot, underscore and dash are simply removed. This allows meaningful
   // search behavior with acronyms and URLs.
-  $text = preg_replace('/[._-]+/', '', $text);
+  $text = preg_replace('/[._]+/', '', $text);
 
   // With the exception of the rules above, we consider all punctuation,
   // marks, spacers, etc, to be a word boundary.