--- loncom/homework/hint.pm	2004/08/24 16:01:18	1.56
+++ loncom/homework/hint.pm	2004/12/06 19:48:22	1.58
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # implements the tags that control the hints
 #
-# $Id: hint.pm,v 1.56 2004/08/24 16:01:18 albertel Exp $
+# $Id: hint.pm,v 1.58 2004/12/06 19:48:22 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -54,7 +54,7 @@ sub start_hintgroup {
 	    $Apache::lonhomework::history{"resource.$id.solved"};
 	my $showoncorrect=lc(&Apache::lonxml::get_param('showoncorrect',$parstack,$safeeval));	
 	&Apache::lonxml::debug("onc orrect $showoncorrect, $gradestatus");
-	if ( ($showoncorrect ne 'yes' && $gradestatus =~ /^correct/) ||
+	if ( ($showoncorrect ne 'yes' && &Apache::response::show_answer()) ||
 	     ( $numtries < $hinttries) ) {
 	    &Apache::lonxml::debug("Grabbin all");
 	    &Apache::lonxml::get_all_text("/hintgroup",$parser);
@@ -267,7 +267,14 @@ sub end_stringhint {
 	my ($ad,$msg);
 	if ($type eq 're' ) {
 	    ${$safeeval->varglob('LONCAPA::response')}=$response;
-	    $result = &Apache::run::run('return $LONCAPA::response=~m'.$answer,$safeeval);
+	    my $compare='=';
+	    if ($answer=~/^\s*NOT\s*/) {
+		$answer=~s/^\s*NOT\s*//;
+		$compare='!';
+	    }
+	    my $test='$LONCAPA::response'.$compare.'~m'.$answer;
+	    &Apache::lonxml::debug("test $test");
+	    $result = &Apache::run::run("return $test",$safeeval);
 	    &Apache::lonxml::debug("current $response");
 	    &Apache::lonxml::debug("current $answer");
 	    $ad = ($result) ? 'APPROX_ANS' : 'INCORRECT';