--- loncom/interface/lonsearchcat.pm	2007/03/12 22:05:30	1.283
+++ loncom/interface/lonsearchcat.pm	2007/05/01 02:13:40	1.285
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Search Catalog
 #
-# $Id: lonsearchcat.pm,v 1.283 2007/03/12 22:05:30 banghart Exp $
+# $Id: lonsearchcat.pm,v 1.285 2007/05/01 02:13:40 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -990,7 +990,7 @@ ENDHEADER
                description=>'Network-wide number of accesses (hits)',},
              { name=>'stdno',
                description=>
-               'Total number of students who have worked on this problem',},
+               'Statistics calculated for number of students',},
              { name => 'avetries',
                description=>'Average number of tries till solved',},
              { name => 'difficulty',
@@ -1395,7 +1395,7 @@ sub parse_advanced_search {
 		   'lastrevisiondatestart_month','lastrevisiondatestart_day',
 		   'lastrevisiondatestart_year','lastrevisiondateend_month',
 		   'lastrevisiondateend_day','lastrevisiondateend_year') {
-	$env{'form.'.$field}=~s/[^\w\/\s\(\)\=\-\"\']//g;
+	$env{'form.'.$field}=~s/[^\w\/\s\(\)\=\-\"\'.]//g;
     }
     foreach ('mode','form','element') {
 	# is this required?  Hmmm.
@@ -1858,7 +1858,7 @@ sub process_phrase_input {
             $item[1];
         }
     term:
-        /[\w\Q:!@#$%^&*()+_=|{}<>,.;\\\/?\E]+/ {
+        /[\w\Q:!@#$%^&*()+_=|{}<>,.;\\\/?\E\-]+/ {
             $item[1];
         }
 ENDGRAMMAR