--- loncom/xml/londefdef.pm	2019/05/17 15:41:32	1.456.2.4
+++ loncom/xml/londefdef.pm	2023/10/06 17:48:55	1.456.2.6.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
-# $Id: londefdef.pm,v 1.456.2.4 2019/05/17 15:41:32 raeburn Exp $
+# $Id: londefdef.pm,v 1.456.2.6.2.2 2023/10/06 17:48:55 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') {
 	$currentstring='<title>';
@@ -600,6 +612,9 @@ sub start_body {
             if ($env{'request.use_absolute'}) {
                 $args->{'use_absolute'} = $env{'request.use_absolute'};
             }
+            if ($env{'form.only_body'}) {
+                $args->{'only_body'} = 1;
+            }
         }
 	$currentstring = 
 	    &Apache::loncommon::start_page($Apache::londefdef::title,
@@ -3255,12 +3270,12 @@ sub end_externallink {
     return $currentstring;
 }
 
-#-- <blankspace heigth="">
+#-- <blankspace height="">
 sub start_blankspace {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = &end_p();	# closes off any unclosed <p>
     if ($target eq 'tex') {
-	my $howmuch = &Apache::lonxml::get_param('heigth',$parstack,$safeeval,undef,1);
+	my $howmuch = &Apache::lonxml::get_param('height',$parstack,$safeeval,undef,1);
 	$currentstring .= '\vskip '.$howmuch.' ';
     }
     return $currentstring;
@@ -4266,10 +4281,10 @@ sub resize_image {
 	    $height_param=$TeXwidth/$old_width_param*$height_param;
 	}
     } elsif ($TeXheight) {
-	$height_param = $TeXheight;
 	if ($height_param) {
 	    $width_param  = $TeXheight/$height_param*$width_param;
 	}
+	$height_param = $TeXheight;
     } elsif ($width) {
 	my $old_width_param=$width_param;
 	$width_param = $width*$scaling;