--- loncom/lonnet/perl/lonnet.pm	2019/01/28 21:37:03	1.1404
+++ loncom/lonnet/perl/lonnet.pm	2019/02/26 14:42:27	1.1406
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1404 2019/01/28 21:37:03 raeburn Exp $
+# $Id: lonnet.pm,v 1.1406 2019/02/26 14:42:27 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -77,7 +77,7 @@ use CGI::Cookie;
 
 use Encode;
 
-use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir
+use vars qw(%perlvar %spareid %pr %prp $memcache %packagetab $tmpdir $deftex
             $_64bit %env %protocol %loncaparevs %serverhomeIDs %needsrelease
             %managerstab);
 
@@ -101,6 +101,7 @@ use LONCAPA::Configuration;
 use LONCAPA::lonmetadata;
 use LONCAPA::Lond;
 use LONCAPA::LWPReq;
+use LONCAPA::transliterate;
 
 use File::Copy;
 
@@ -3856,6 +3857,9 @@ sub clean_filename {
     }
 # Replace spaces by underscores
     $fname=~s/\s+/\_/g;
+# Transliterate non-ascii text to ascii
+    my $lang = &Apache::lonlocal::current_language();
+    $fname = &LONCAPA::transliterate::fname_to_ascii($fname,$lang);
 # Replace all other weird characters by nothing
     $fname=~s{[^/\w\.\-]}{}g;
 # Replace all .\d. sequences with _\d. so they no longer look like version
@@ -3863,6 +3867,7 @@ sub clean_filename {
     $fname=~s/\.(\d+)(?=\.)/_$1/g;
     return $fname;
 }
+
 # This Function checks if an Image's dimensions exceed either $resizewidth (width) 
 # or $resizeheight (height) - both pixels. If so, the image is scaled to produce an 
 # image with the same aspect ratio as the original, but with dimensions which do 
@@ -3937,6 +3942,14 @@ sub userfileupload {
     $fname=&clean_filename($fname);
     # See if there is anything left
     unless ($fname) { return 'error: no uploaded file'; }
+    # If filename now begins with a . prepend unix timestamp _ milliseconds
+    if ($fname =~ /^\./) {
+        my ($s,$usec) = &gettimeofday();
+        while (length($usec) < 6) {
+            $usec = '0'.$usec;
+        }
+        $fname = $s.'_'.substr($usec,0,3).$fname;
+    }
     # Files uploaded to help request form, or uploaded to "create course" page are handled differently
     if ((($formname eq 'screenshot') && ($subdir eq 'helprequests')) ||
         (($formname eq 'coursecreatorxml') && ($subdir eq 'batchupload')) ||
@@ -14811,6 +14824,11 @@ BEGIN {
 
 }
 
+# ------------- set default texengine (domain default overrides this)
+{
+    $deftex = LONCAPA::texengine();
+}
+
 $memcache=new Cache::Memcached({'servers'           => ['127.0.0.1:11211'],
 				'compress_threshold'=> 20_000,
  			        });
@@ -15536,7 +15554,6 @@ Returns:
                       for the sheet of paper
       FirstName   - column that the first name starts in
       FirstNameLength - number of columns that the first name spans
-
       LastName    - column that the last name starts in
       LastNameLength - number of columns that the last name spans
       BubblesPerRow - number of bubbles available in each row used to