--- loncom/interface/lonprintout.pm	2005/06/04 20:52:37	1.376
+++ loncom/interface/lonprintout.pm	2005/07/26 10:50:32	1.380
@@ -1,7 +1,7 @@
 #  The LearningOnline Network
 # Printout
 #
-# $Id: lonprintout.pm,v 1.376 2005/06/04 20:52:37 albertel Exp $
+# $Id: lonprintout.pm,v 1.380 2005/07/26 10:50:32 foxr Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -650,7 +650,8 @@ sub latex_corrections {
 	$first_comment = index($result,'<!--',$first_comment);
     }
     $result =~ s/^\s+$//gm; #remove empty lines
-    $result =~ s/(\s)(\s+)/$1/g; #removes more than one empty space
+    #removes more than one empty space
+    $result =~ s|(\s\s+)|($1=~/[\n\r]/)?"\n":" "|ge;
     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
     $result =~ s/{\\par }\s*\\\\/\\\\/gm;
@@ -997,13 +998,15 @@ ENDPART
 		    if((($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) && 
 		       ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|page)$/)) {
-			$form{'grade_target'}='answer';
-			$form{'answer_output_mode'}='tex';
-			$form{'rndseed'}=$rndseed;
-			$form{'problem_split'}=$parmhash{'problem_stream_switch'};
+			#  Don't permanently modify %$form...
+			my %answerform = %form;
+			$answerform{'grade_target'}='answer';
+			$answerform{'answer_output_mode'}='tex';
+			$answerform{'rndseed'}=$rndseed;
+			$answerform{'problem_split'}=$parmhash{'problem_stream_switch'};
                         if ($urlp=~/\/res\//) {$env{'request.state'}='published';}
 			$resources_printed .= $urlp.':';
-			my $answer=&Apache::lonnet::ssi($urlp,%form);
+			my $answer=&Apache::lonnet::ssi($urlp,%answerform);
 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 			    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 			} else {
@@ -1104,10 +1107,12 @@ ENDPART
 		my $current_counter=$env{'form.counter'};
 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
-		    $form{'grade_target'}='answer';
-		    $form{'answer_output_mode'}='tex';
+		    #  Don't permanently pervert the %form hash
+		    my %answerform = %form;
+		    $answerform{'grade_target'}='answer';
+		    $answerform{'answer_output_mode'}='tex';
 		    $resources_printed .= $urlp.':';
-		    my $answer=&Apache::lonnet::ssi($urlp,%form);
+		    my $answer=&Apache::lonnet::ssi($urlp,%answerform);
 		    &Apache::lonnet::appenv(('form.counter' => $current_counter));
 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
@@ -1311,12 +1316,14 @@ ENDPART
 		my $texversion=&Apache::lonnet::ssi($urlp,%form);
 		if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 		   ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
-		    $form{'grade_target'}='answer';
-		    $form{'answer_output_mode'}='tex';
-		    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
-		    $form{'rndseed'}=$rndseed;
+		    #  Don't permanently pervert %form:
+		    my %answerform = %form;
+		    $answerform{'grade_target'}='answer';
+		    $answerform{'answer_output_mode'}='tex';
+		    $answerform{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
+		    $answerform{'rndseed'}=$rndseed;
 		    $resources_printed .= $urlp.':';
-		    my $answer=&Apache::lonnet::ssi($urlp,%form);
+		    my $answer=&Apache::lonnet::ssi($urlp,%answerform);
 		    if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
 		    } else {
@@ -1372,7 +1379,7 @@ ENDPART
 #-- writing .tex file in prtspool 
     my $temp_file;
     my $identifier = &Apache::loncommon::get_cgi_id();
-    my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout_".$identifier.".tex";
+    my $filename = "/home/httpd/prtspool/$env{'user.name'}_$env{'user.domain'}_printout_$identifier.tex";
     if (!($#print_array>0)) { 
 	unless ($temp_file = Apache::File->new('>'.$filename)) {
 	    $r->log_error("Couldn't open $filename for output $!");
@@ -1395,7 +1402,8 @@ ENDPART
 	    my $temp_file;
 	    my $newfilename=$filename;
 	    my $num=$i+1;
-	    $newfilename =~s/\.tex$/_$num\.tex/; 
+	    $newfilename =~s/\.tex$//; 
+	    $newfilename=sprintf("%s_%03d.tex",$newfilename, $num);
 	    unless ($temp_file = Apache::File->new('>'.$newfilename)) {
 		$r->log_error("Couldn't open $newfilename for output $!");
 		return SERVER_ERROR; 
@@ -1525,9 +1533,11 @@ sub print_resources {
 		    my $current_counter=$env{'form.counter'};
 		    if(($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') ||
 		       ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'only')) {
-			$moreenv->{'answer_output_mode'}='tex';
-			$moreenv->{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
-			my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$env{'request.course.id'},%{$moreenv});
+			#   Use a copy of the hash so we don't pervert it on future loop passes.
+			my %answerenv = %{$moreenv};
+			$answerenv{'answer_output_mode'}='tex';
+			$answerenv{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
+			my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$env{'request.course.id'},%answerenv);
 			&Apache::lonnet::appenv(('form.counter' => $current_counter));
 			if ($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
 			    $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
@@ -2191,11 +2201,11 @@ CHOOSE_FROM_ANY_SEQUENCE
 	        </defaultvalue>
 	    </string>
 	     <message></td></tr><tr><td align="right">Use style file:</td><td></message>
-             <message><input type="text" size="40" name="style_file_value" value="$stylevalue"  />&nbsp; <a href="javascript:openbrowser('helpform','style_file','sty')">Select style file</a> </td><td></message>
-             <message></td></tr></message>
+             <message><input type="text" size="40" name="style_file_value" value="$stylevalue"  />&nbsp; <a href="javascript:openbrowser('helpform','style_file','sty')">Select style file</a> </td><tr><td></message>
 	     <choices allowempty="1" multichoice="true" variable="showallfoils">
                 <choice computer="1">Show all foils?</choice>
              </choices>
+	     <message></td></tr></message>
 RNDSEED
             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 	    $helper->{'VARS'}->{'style_file'}=$env{'form.style_file_value'};