--- loncom/xml/londefdef.pm	2017/01/27 19:58:21	1.464
+++ loncom/xml/londefdef.pm	2023/03/15 16:47:59	1.467
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
-# $Id: londefdef.pm,v 1.464 2017/01/27 19:58:21 damieng Exp $
+# $Id: londefdef.pm,v 1.467 2023/03/15 16:47:59 raeburn Exp $
 # 
 #
 # Copyright Michigan State University Board of Trustees
@@ -98,7 +98,19 @@ sub start_m {
             # On top of that, MathJax will render math without $, but
             # it will fail with tth. This is worth a warning.
             # (even though some people might just use latex for printing)
-            &Apache::lonxml::warning(&mt("Missing \$ in <m>."));
+            &Apache::lonxml::warning(&mt('Missing $ in [_1].','<m>'));
+        } elsif (($env{'browser.type'} eq 'safari') && ($env{'form.editxmltext'}) &&
+                 (($env{'form.problemmode'} eq 'view') || ($env{'form.problemmode'} eq 'discard'))) {
+            my $delimiter;
+            if ($inside =~ /\$$/) {
+                $delimiter = '$';
+            } elsif ($inside =~ /\\([)\]])$/) {
+                $delimiter = $1;
+            }
+            if ($delimiter) {
+                &Apache::lonxml::warning(&mt('Insert a space between [_1] and [_2].',
+                                             $delimiter,'</m>'));
+            }
         }
 	my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
 	if ($eval eq 'on') {
@@ -355,7 +367,7 @@ sub start_title {
 	$Apache::londefdef::title = 
 	    &Apache::lonxml::get_all_text('/title',$parser,$style);
     } elsif ($target eq 'tex') {
-	$currentstring .= '\keephidden{Title of the document:  ' 
+	$currentstring .= '\keephidden{Title of the document:  ';
     }
     if ($target eq 'meta') {
 	$currentstring='<title>';