--- loncom/xml/lonxml.pm	2002/09/04 03:57:18	1.190
+++ loncom/xml/lonxml.pm	2002/09/04 06:55:27	1.192
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # XML Parser Module 
 #
-# $Id: lonxml.pm,v 1.190 2002/09/04 03:57:18 albertel Exp $
+# $Id: lonxml.pm,v 1.192 2002/09/04 06:55:27 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -539,21 +539,19 @@ sub htmlclean {
     return $output;
 }
 
-sub latex_special_sumbols {
+sub latex_special_symbols {
     my ($current_token,$stack,$parstack)=@_;
-    my @temp_array = @$stack;
-    if ($temp_array[-1] ne 'tt') {
-	if ($current_token=~m/\^/) {$current_token=~s/\^/\\verb|\^|/g;}
-    } else {
-	if ($current_token=~m/\^/) {$current_token=~s/\^/}\\verb|\^|{/g;}
-    }
-    if ($current_token=~m/>/) {$current_token=~s/>/\$>\$/g;} #more
-    if ($current_token=~m/</) {$current_token=~s/</\$<\$/g;} #less
-    if ($current_token=~m/\d%/) {$current_token =~ s/%/\\%/g;} #percent after digit
-    if ($current_token=~m/\s%/) {$current_token =~ s/%/\\%/g;} #persent after space
-
-
-#    $current_token = ' start='.$current_token.'=finish ';
+    $current_token=~s/\\/\\char92 /g;
+    $current_token=~s/\^/\\char94 /g;
+    $current_token=~s/\~/\\char126 /g;
+    $current_token=~s/(&[^a-z#])/\\$1/g;
+    $current_token=~s/([^&]\#)/\\$1/g;
+    $current_token=~s/(\$|_|{|})/\\$1/g;
+    $current_token=~s/\\char92 /\\texttt{\\char92}/g;
+    $current_token=~s/>/\$>\$/g; #more
+    $current_token=~s/</\$<\$/g; #less
+    if ($current_token=~m/\d%/) {$current_token =~ s/(\d)%/$1\\%/g;} #percent after digit
+    if ($current_token=~m/\s%/) {$current_token =~ s/(\s)%/$1\\%/g;} #persent after space
     return $current_token;
 }
 
@@ -636,7 +634,7 @@ sub inner_xmlparse {
       }
       if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
 	if ($target eq 'tex') {
-	    $result=&latex_special_sumbols($result,$stack,$parstack);
+	    $result=&latex_special_symbols($result,$stack,$parstack);
 	}
       }