--- loncom/xml/londefdef.pm	2014/08/24 23:38:30	1.453
+++ loncom/xml/londefdef.pm	2016/01/14 19:40:26	1.458
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
-# $Id: londefdef.pm,v 1.453 2014/08/24 23:38:30 raeburn Exp $
+# $Id: londefdef.pm,v 1.458 2016/01/14 19:40:26 damieng Exp $
 # 
 #
 # Copyright Michigan State University Board of Trustees
@@ -92,6 +92,14 @@ sub start_m {
     my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
     if ($target eq 'web' || $target eq 'analyze') {
 	&Apache::lonxml::debug("M is starting with:$inside:");
+        if (!($inside =~ /^\s*\$.*\$\s*$/ || $inside =~ /^\s*\\[([].*\\[)\]]\s*$/)) {
+            # Non-math LaTeX will not be rendered correctly with MathJax
+            # and it should be avoided anyway.
+            # 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>."));
+        }
 	my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
 	if ($eval eq 'on') {
 	    $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
@@ -638,6 +646,12 @@ sub edit_controls {
     }
     $result .= '
 <div><input type="submit" name="editmode" accesskey="e" value="'.&mt('Edit').'" />';
+    if ($env{'browser.type'} ne 'explorer' || $env{'browser.version'} > 9) {
+        my $uri = $env{'request.uri'};
+        my $daxeurl = '/daxepage'.$uri;
+        $result .= '<input type="button" value="'.&mt('Edit with Daxe').'" '.
+                  'onclick="window.open(\''.$daxeurl.'\',\'_blank\');" />';
+    }
     if (($env{'request.course.id'}) && ($env{'form.forceedit'})) {
         my $url=&Apache::lonnet::hreflocation('',$env{'request.filename'});
         if ($url =~ /\.html?$/i) {
@@ -1735,7 +1749,7 @@ sub start_a {
                         } elsif ($env{'request.course.id'}) {
                             my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
                             my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
-                            if ($linkurl =~ m{^([^/]|/uploaded/$cdom/$cnum/docs/)}) {
+                            if ($linkurl =~ m{^([^/]|/uploaded/$cdom/$cnum/(docs|supplemental)/)}) {
                                 my $cleanhref = &clean_docs_httpref($linkurl,$url,$cdom,$cnum);
                                 if ($cleanhref) {
                                     &Apache::lonxml::extlink($cleanhref);
@@ -2811,7 +2825,7 @@ sub start_img {
 
 	# &Apache::lonxml::debug("LaTeX rendering = $latex_rendering image file: $src");
 
-	#if original bmp/gif/jpg/png file exist do following:
+	#if original bmp/gif/jpg/png/svg file exist do following:
 	my $origsrc=$src;
 	my ($path,$file) = &get_eps_image($src);
 	# &Apache::lonnet::logthis("Image source: $src result: $path $file");
@@ -3450,7 +3464,7 @@ sub start_caption {
     my $currentstring = '';
     if ($target eq 'web' || $target eq 'webgrade') {
 	$currentstring = $token->[4];     
-    } 
+    }
     return $currentstring;
 }
 
@@ -3458,7 +3472,7 @@ sub end_caption {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web' || $target eq 'webgrade') {
-	$currentstring = $token->[2];    
+	$currentstring = $token->[2];
     } 
     return $currentstring;
 }
@@ -4325,8 +4339,8 @@ sub get_eps_image {
 	&Apache::lonnet::repcopy($orig_src); # Failure is not completely fatal.
     }
     &Apache::lonxml::debug("get_eps_image: Original image: $orig_src");
-    my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg)/i);
-    $src=~s/\.(bmp|gif|png|jpg|jpeg)$/\.eps/i;
+    my ($spath, $sname, $sext) = &fileparse($src, qr/\.(bmp|gif|png|jpg|jpeg|svg)/i);
+    $src=~s/\.(bmp|gif|png|jpg|jpeg|svg)$/\.eps/i;
     $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
     &Apache::lonxml::debug("Filelocation gives: $src");
     if (! -e $src) {
@@ -4612,7 +4626,7 @@ sub clean_docs_httpref {
         $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
     }
     my $cleanhref;
-    if ($docuri =~ m{^(\Q/uploaded/$cdom/$cnum/docs/\E)(.+/)[^/]+$}) {
+    if ($docuri =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs|supplemental)/)(.+/)[^/]+$}) {
         my $prefix = $1;
         my $relpath = $2;
         my ($hrefpath,$fname);
@@ -4765,7 +4779,8 @@ described at http://www.lon-capa.org.
 
         Output:
         returns an absolute URL constructed from the href provided, and the calling context.
-        (this will be null, if the URL does not begin: /uploaded/$cdom/$cnum/docs/).
+        (this will be null, if the URL does not begin: /uploaded/$cdom/$cnum/docs/ or
+        /uploaded/$cdom/$cnum/supplemental/).
 
 =back