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Diff for /loncom/xml/londefdef.pm between versions 1.187 and 1.221

version 1.187, 2003/10/24 21:25:50 version 1.221, 2004/06/08 14:13:21
Line 52  use Apache::lonmenu(); Line 52  use Apache::lonmenu();
 use Apache::lonmeta();  use Apache::lonmeta();
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
   
 $Apache::londefdef::TD_redirection=0;  
   
 BEGIN {  BEGIN {
   
Line 60  BEGIN { Line 59  BEGIN {
   
 }  }
   
   sub initialize_londefdef {
       $Apache::londefdef::TD_redirection=0;
       @Apache::londefdef::table = ();
       $Apache::londefdef::select=0;
       @Apache::londefdef::description=();
       $Apache::londefdef::DD_redirection=0;
       $Apache::londefdef::DT_redirection=0;
   }
   
 #======================= TAG SUBROUTINES =====================  #======================= TAG SUBROUTINES =====================
 #-- <output>  #-- <output>
 sub start_output {  sub start_output {
Line 74  sub end_output { Line 82  sub end_output {
 }  }
 #-- <m> tag  #-- <m> tag
 sub start_m {  sub start_m {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
  $Apache::lonxml::prevent_entity_encode++;      if ($target eq 'web' || $target eq 'analyze') {
  my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);  
  $inside ='\\documentstyle{article}'.$inside;   $inside ='\\documentstyle{article}'.$inside;
  &Apache::lonxml::debug("M is starting with:$inside:");   &Apache::lonxml::debug("M is starting with:$inside:");
  my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);   my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
Line 95  sub start_m { Line 102  sub start_m {
  #&Apache::lonxml::debug("M is ends with:$currentstring:");   #&Apache::lonxml::debug("M is ends with:$currentstring:");
  $Apache::lonxml::post_evaluate=0;   $Apache::lonxml::post_evaluate=0;
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);   $currentstring = $inside;
  my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);   my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
  if ($eval eq 'on') {   if ($eval eq 'on') {
     $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);      $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
  }   }
  if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}   if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
  $Apache::lonxml::post_evaluate=0;   $Apache::lonxml::post_evaluate=0;
     } else {  
  my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);  
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 111  sub start_m { Line 116  sub start_m {
 sub end_m {  sub end_m {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'tex') {
  $Apache::lonxml::prevent_entity_encode--;  
     } elsif ($target eq 'tex') {  
  $currentstring = "";   $currentstring = "";
     } elsif ($target eq 'meta') {  
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 145  sub end_tthoption { Line 147  sub end_tthoption {
 sub start_html {  sub start_html {
     my ($target,$token) = @_;      my ($target,$token) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($ENV{'browser.mathml'}) {      my $options=$ENV{'course.'.$ENV{'request.course.id'}.'.tthoptions'};
  &tth::ttminit();      &Apache::lontexconvert::init_tth();
  if ($ENV{'browser.unicode'}) {  
     &tth::ttmoptions('-L -u1');  
  } else {  
     &tth::ttmoptions('-L -u0');  
  }  
     } else {  
  &tth::tthinit();  
  if ($ENV{'browser.unicode'}) {  
     &tth::tthoptions('-L -u1');  
  } else {  
     &tth::tthoptions('-L -u0');  
  }  
     }  
     if ($target eq 'web' || $target eq 'edit') {      if ($target eq 'web' || $target eq 'edit') {
  $currentstring = &Apache::lonxml::xmlbegin().   $currentstring = &Apache::lonxml::xmlbegin().
     &Apache::lonxml::fontsettings();           &Apache::lonxml::fontsettings();     
Line 167  sub start_html { Line 156  sub start_html {
  @Apache::londefdef::table = ();   @Apache::londefdef::table = ();
  $currentstring .= '\documentclass[letterpaper]{article}';   $currentstring .= '\documentclass[letterpaper]{article}';
  if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';}    if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';} 
  $currentstring .= '\newcommand{\keephidden}[1]{}   $currentstring .= '\newcommand{\keephidden}[1]{}'.
                            \renewcommand{\deg}{$^{\circ}$}                            '\renewcommand{\deg}{$^{\circ}$}'.
                            \usepackage{longtable}                            '\usepackage{longtable}'.
                            \usepackage{textcomp}                            '\usepackage{textcomp}'.
                            \usepackage{makeidx}                            '\usepackage{makeidx}'.
                            \usepackage[dvips]{graphicx}                            '\usepackage[dvips]{graphicx}'.
                            \usepackage{epsfig}\usepackage{calc}                            '\usepackage{epsfig}'.
 \newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}                            '\usepackage{calc}'.
 \renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';                            '\usepackage{amsmath}'.
                             '\usepackage{amssymb}'.
                             '\usepackage{amsfonts}'.
                             '\usepackage{amsthm}'.
                             '\usepackage{amscd}'.
                             '\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}'.
                             '\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 400  sub start_meta { Line 395  sub start_meta {
             my $display=&Apache::lonxml::get_param              my $display=&Apache::lonxml::get_param
  ('display',$parstack,$safeeval,undef,1);   ('display',$parstack,$safeeval,undef,1);
             if ($display) {              if ($display) {
  $display=&HTML::Entities::encode($display);   $display=&HTML::Entities::encode($display,'<>&"');
  $currentstring.='<'.$name.'.display>'.$display.   $currentstring.='<'.$name.'.display>'.$display.
                                '</'.$name.'.display>';                                 '</'.$name.'.display>';
             }              }
Line 542  sub start_body { Line 537  sub start_body {
  if ($ENV{'request.state'} ne 'published') {   if ($ENV{'request.state'} ne 'published') {
     $currentstring.=(<<EDITBUTTON);      $currentstring.=(<<EDITBUTTON);
  <form method="post">   <form method="post">
  <input type="submit" name="editmode" value="Edit" />   <input type="submit" name="editmode" accesskey="e" value="Edit" />
  </form>   </form>
 EDITBUTTON  EDITBUTTON
  } else {   } else {
     $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);      $currentstring.=&Apache::lonmenu::menubuttons(undef,$target,1);
  }   }
    $currentstring.=&Apache::lonxml::message_location();
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring = '\begin{document}';     $currentstring = '\begin{document}';  
     }       } 
Line 642  sub start_h1 { Line 638  sub start_h1 {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=lc(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1));
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 666  sub end_h1 { Line 662  sub end_h1 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 692  sub start_h2 { Line 688  sub start_h2 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 712  sub end_h2 { Line 708  sub end_h2 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 735  sub start_h3 { Line 731  sub start_h3 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 755  sub end_h3 { Line 751  sub end_h3 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 778  sub start_h4 { Line 774  sub start_h4 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 798  sub end_h4 { Line 794  sub end_h4 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 821  sub start_h5 { Line 817  sub start_h5 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 841  sub end_h5 { Line 837  sub end_h5 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 864  sub start_h6 { Line 860  sub start_h6 {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $pre;   my $pre;
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $pre='\begin{center}';      $pre='\begin{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $pre='\rlap{';      $pre='\rlap{';
Line 884  sub end_h6 { Line 880  sub end_h6 {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $post;   my $post='\vskip 0 mm ';
  my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if (($align eq 'center') || (not defined $align)) {   if ($align eq 'center') {
     $post='\end{center}';      $post='\end{center}';
  } elsif ($align eq 'left') {   } elsif ($align eq 'left') {
     $post='} \hfill'.'\vskip 0 mm ';      $post='} \hfill'.'\vskip 0 mm ';
Line 1106  sub end_q { Line 1102  sub end_q {
 }  }
   
 #-- <p> tag (end tag optional)  #-- <p> tag (end tag optional)
   #optional attribute - align="center|left|right"
 sub start_p {  sub start_p {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $signal=1;   my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}}   if ($align eq 'center') {
  if ($signal) {$currentstring .= '\par ';}      $currentstring='\begin{center}\par';
    } elsif ($align eq 'right') {
       $currentstring='\makebox['.$ENV{'form.textwidth'}.']{\hfill\llap{';
    } elsif ($align eq 'left') {
       $currentstring='\noindent\makebox['.$ENV{'form.textwidth'}.']{\rlap{';
    } else {
               $currentstring='\par ';
           }
    my $signal=1;#<p> does not work inside <b>...</b> 
    foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}
    if (!$signal) {$currentstring = '';}
    }
     }      }
     return $currentstring;      return $currentstring;
 }  }
   
 sub end_p {  sub end_p {
     my ($target,$token) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
       } elsif ($target eq 'tex') {
    if ($$tagstack[-1] eq 'p') {
       my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
       if ($align eq 'center') {
    $currentstring .= '\end{center}';
       } elsif ($align eq 'right') {
    $currentstring .= '}}';
       } elsif ($align eq 'left') {
    $currentstring .= '}\hfill}';
       }
    }
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 1135  sub start_br { Line 1154  sub start_br {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {   if (($$tagstack[-2] eq 'b') || ($$tagstack[-2] eq 'strong') ||
     $currentstring .= '\vskip 0.2 mm ';              ($$tagstack[-2] eq 'ol') || ($$tagstack[-2] eq 'ul')) {
       $currentstring .= ' \vskip 0 mm ';
    } elsif ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
       $currentstring .= '\strut \\\\ \strut ';
  }   }
     }      }
     return $currentstring;      return $currentstring;
Line 1232  sub start_font { Line 1254  sub start_font {
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);   my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
  if ($face=~/symbol/i) {   if ($face!~/symbol/i) {
     $Apache::lonxml::prevent_entity_encode++;  
  } else {  
     if (($ENV{'browser.fontenhance'} eq 'on') ||       if (($ENV{'browser.fontenhance'} eq 'on') || 
  ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }   ($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
  }   }
Line 1252  sub end_font { Line 1272  sub end_font {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';      my $currentstring = '';
     if ($target eq 'web') {      if ($target eq 'web') {
  my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);  
  if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}  
  $currentstring = $token->[2];       $currentstring = $token->[2];    
     }  elsif ($target eq 'tex') {      }  elsif ($target eq 'tex') {
  my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);   my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
Line 1323  sub start_sub { Line 1341  sub start_sub {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= "\$_{";   $currentstring .= '\ensuremath{_{';
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1334  sub end_sub { Line 1352  sub end_sub {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= "}\$";   $currentstring .= '}}';
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 1346  sub start_sup { Line 1364  sub start_sup {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[4];   $currentstring .= $token->[4];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= "\$^{";   $currentstring .= '\ensuremath{^{';
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1357  sub end_sup { Line 1375  sub end_sup {
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring .= $token->[2];   $currentstring .= $token->[2];
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $currentstring .= "}\$";   $currentstring .= '}}';
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 1519  sub start_ul { Line 1537  sub start_ul {
     $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}      $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
                                 \renewcommand{\labelitemii}{$\bullet$}                                   \renewcommand{\labelitemii}{$\bullet$} 
                                 \renewcommand{\labelitemiii}{$\bullet$}                                  \renewcommand{\labelitemiii}{$\bullet$}
                                 \renewcommand{\labelitemiv}{$\bullet$}';                                  \renewcommand{\labelitemiv}{$\bullet$}\strut ';
  } elsif ($TeXtype eq 'circle') {   } elsif ($TeXtype eq 'circle') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}      $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
                                 \renewcommand{\labelitemii}{$\circ$}                                   \renewcommand{\labelitemii}{$\circ$} 
                                 \renewcommand{\labelitemiii}{$\circ$}                                  \renewcommand{\labelitemiii}{$\circ$}
                                 \renewcommand{\labelitemiv}{$\circ$}';                                  \renewcommand{\labelitemiv}{$\circ$}\strut ';
  } elsif ($TeXtype eq 'square') {   } elsif ($TeXtype eq 'square') {
     $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}      $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
                                 \renewcommand{\labelitemii}{$\diamond$}                                   \renewcommand{\labelitemii}{$\diamond$} 
                                 \renewcommand{\labelitemiii}{$\diamond$}                                  \renewcommand{\labelitemiii}{$\diamond$}
                                 \renewcommand{\labelitemiv}{$\diamond$}';                                  \renewcommand{\labelitemiv}{$\diamond$}\strut ';
  }   }
  $currentstring .= '\begin{itemize}';     $currentstring .= '\begin{itemize}';  
     }       } 
Line 1545  sub end_ul { Line 1563  sub end_ul {
  $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}   $currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
                                 \renewcommand{\labelitemii}{$\bullet$}                                   \renewcommand{\labelitemii}{$\bullet$} 
                                 \renewcommand{\labelitemiii}{$\bullet$}                                  \renewcommand{\labelitemiii}{$\bullet$}
                                 \renewcommand{\labelitemiv}{$\bullet$}';                                    \renewcommand{\labelitemiv}{$\bullet$}\strut ';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1608  sub start_ol { Line 1626  sub start_ol {
     $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}      $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
                                 \renewcommand{\labelenumii}{\arabic{enumii}.}                                   \renewcommand{\labelenumii}{\arabic{enumii}.} 
                                 \renewcommand{\labelenumiii}{\arabic{enumiii}.}                                  \renewcommand{\labelenumiii}{\arabic{enumiii}.}
                                 \renewcommand{\labelenumiv}{\arabic{enumiv}.}';                                  \renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';
  } elsif ($type eq 'A') {   } elsif ($type eq 'A') {
     $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}      $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
                                 \renewcommand{\labelenumii}{\Alph{enumii}.}                                   \renewcommand{\labelenumii}{\Alph{enumii}.} 
                                 \renewcommand{\labelenumiii}{\Alph{enumiii}.}                                  \renewcommand{\labelenumiii}{\Alph{enumiii}.}
                                 \renewcommand{\labelenumiv}{\Alph{enumiv}.}';                                  \renewcommand{\labelenumiv}{\Alph{enumiv}.}\strut ';
  } elsif ($type eq 'a') {   } elsif ($type eq 'a') {
     $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}      $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
                                 \renewcommand{\labelenumii}{\alph{enumii}.}                                  \renewcommand{\labelenumii}{\alph{enumii}.}
                                 \renewcommand{\labelenumiii}{\alph{enumiii}.}                                  \renewcommand{\labelenumiii}{\alph{enumiii}.}
                                 \renewcommand{\labelenumiv}{\alph{enumiv}.} ';                                  \renewcommand{\labelenumiv}{\alph{enumiv}.} \strut ';
  } elsif ($type eq 'i') {   } elsif ($type eq 'i') {
     $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}      $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
                                 \renewcommand{\labelenumii}{\roman{enumii}.}                                  \renewcommand{\labelenumii}{\roman{enumii}.}
                                 \renewcommand{\labelenumiii}{\roman{enumiii}.}                                  \renewcommand{\labelenumiii}{\roman{enumiii}.}
                                 \renewcommand{\labelenumiv}{\roman{enumiv}.} ';                                  \renewcommand{\labelenumiv}{\roman{enumiv}.}\strut  ';
  } elsif ($type eq 'I') {   } elsif ($type eq 'I') {
     $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}      $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
                                 \renewcommand{\labelenumii}{\Roman{enumii}.}                                  \renewcommand{\labelenumii}{\Roman{enumii}.}
                                 \renewcommand{\labelenumiii}{\Roman{enumiii}.}                                  \renewcommand{\labelenumiii}{\Roman{enumiii}.}
                                 \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';                                  \renewcommand{\labelenumiv}{\Roman{enumiv}.} \strut ';
  }   }
  $currentstring .= '\begin{enumerate}';     $currentstring .= '\begin{enumerate}';  
     }       } 
Line 1644  sub end_ol { Line 1662  sub end_ol {
  $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}   $currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
                                           \renewcommand{\labelenumii}{\arabic{enumii}.}                                            \renewcommand{\labelenumii}{\arabic{enumii}.}
                                           \renewcommand{\labelenumiii}{\arabic{enumiii}.}                                            \renewcommand{\labelenumiii}{\arabic{enumiii}.}
                                           \renewcommand{\labelenumiv}{\arabic{enumiv}.}';                                              \renewcommand{\labelenumiv}{\arabic{enumiv}.}\strut ';  
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1758  sub end_dd { Line 1776  sub end_dd {
 }  }
   
 #-- <table> tag (end tag required)  #-- <table> tag (end tag required)
   #list of supported attributes: border,width,TeXwidth
 sub start_table {  sub start_table {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $textwidth='';      my ($textwidth,$currentstring)=('','');
     if (not defined @Apache::londefdef::table) {  
  $textwidth=&recalc($ENV{'form.textwidth'});  
  $textwidth=~/(\d+\.?\d*)/;  
  $textwidth=0.95*$1;  
     } else {  
  $textwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);  
     }  
     my $currentstring = '';  
     if ($target eq 'web') {      if ($target eq 'web') {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $aa = {};   my $aa = {};
  push @Apache::londefdef::table, $aa;    push @Apache::londefdef::table, $aa; 
  $Apache::londefdef::table[-1]{'row_number'} = -1;   $Apache::londefdef::table[-1]{'row_number'} = -1;
         #table's width          #table's width 
           #default coincides with text line length
    if ($#Apache::londefdef::table==0) {
       $textwidth=&recalc($ENV{'form.textwidth'}); #result is always in mm
       $textwidth=~/(\d+\.?\d*)/;
       $textwidth=0.95*$1; #accounts "internal" LaTeX space for table frame
    } else {
       if ($Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]=~/\d/) {
    #the maximum width of nested table is determined by LATeX width of parent cell
    $textwidth=$Apache::londefdef::table[-2]{'TeXlen'}[$Apache::londefdef::table[-2]{'row_number'}][$Apache::londefdef::table[-2]{'counter_columns'}]; 
       } else {
                 #try to use all space not used before (minus 5% for LaTeX table internal) - rather silly
    my $textwidth=$Apache::londefdef::table[-2]{'width'};
    for (my $i=0;$i<$Apache::londefdef::table[-2]{'counter_columns'};$i++) {
       $textwidth=$textwidth-$Apache::londefdef::table[-2]{'TeXlen'}[0][$i];
    }
       }
    }
  my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);   my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
  if (not defined $TeXwidth) {   if (not defined $TeXwidth) {
     my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);      my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
     if ($htmlwidth=~/%/) {      if ($htmlwidth=~/%/) {
                   $Apache::londefdef::table[-1]{'percent'}=1;
  $htmlwidth=~/(\d+)/;   $htmlwidth=~/(\d+)/;
  my $value=$1*$textwidth/100;   $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;;
  $Apache::londefdef::table[-1]{'width'}=$value;  
     } else {      } else {
  $Apache::londefdef::table[-1]{'width'}=$textwidth;   $Apache::londefdef::table[-1]{'width'}=$textwidth;
     }      }
  } elsif ($TeXwidth=~/%/) {   } elsif ($TeXwidth=~/%/) {
       $Apache::londefdef::table[-1]{'percent'}=1;
     $TeXwidth=~/(\d+)/;      $TeXwidth=~/(\d+)/;
     my $value=$1*$textwidth/100;              $Apache::londefdef::table[-1]{'width'}=$1*$textwidth/100;
             $Apache::londefdef::table[-1]{'width'}=$value;  
  } else {   } else {
     $Apache::londefdef::table[-1]{'width'}=$textwidth;      $Apache::londefdef::table[-1]{'width'}=$TeXwidth;
  }           }        
         #table's border          #table's border
  my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1);    my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval); 
           my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
  unless (defined $border) { $border = 0; }   unless (defined $border) { $border = 0; }
  if ($border) {    if ($border) { 
     $Apache::londefdef::table[-1]{'hinc'} = '\hline ';       $Apache::londefdef::table[-1]{'hinc'} = '\hline '; 
Line 1805  sub start_table { Line 1834  sub start_table {
     $Apache::londefdef::table[-1]{'vinc'} = '&';       $Apache::londefdef::table[-1]{'vinc'} = '&'; 
     $Apache::londefdef::table[-1]{'vvinc'} = '';      $Apache::londefdef::table[-1]{'vvinc'} = '';
  }   }
  $Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';   if ($#Apache::londefdef::table==0) {
  $currentstring = '\keephidden{NEW TABLE ENTRY}';      $Apache::londefdef::table[-1]{'output'}='\strut\newline\strut\setlength{\tabcolsep}{1 mm}';
     }   }
    $Apache::londefdef::table[-1]{'output'}.=' \noindent \begin{tabular} ';
           $Apache::londefdef::table[-1]{'TeXlen'}=[];
           $Apache::londefdef::table[-1]{'objectlen'}=[];
           $Apache::londefdef::table[-1]{'maxlen'}=[];
           $Apache::londefdef::table[-1]{'minlen'}=[];
           $Apache::londefdef::table[-1]{'content'}=[];
           $Apache::londefdef::table[-1]{'align'}=[];
           $currentstring='\keephidden{NEW TABLE ENTRY}';
      }
     return $currentstring;      return $currentstring;
 }  }
     
Line 1819  sub end_table { Line 1857  sub end_table {
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  my $inmemory = '';   my $inmemory = '';
  my $output = '';   my $output = '';
  #construct header of the table   my $WARNING='';
  my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};          #width of columns from TeXwidth attributes
  for (my $in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {   for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};      for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
    if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]<$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn]) {
       $Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]=$Apache::londefdef::table[-1]{'TeXlen'}[$in][$jn];
    }
       }
  }   }
  $header_of_table .= '}';          #free space and number of empty columns
  #define the length of the table cells   my ($available_space,$empty_columns)=($Apache::londefdef::table[-1]{'width'},0);
  #always starts with TeXwidth (if defined everything else is ignored)  ## &Apache::lonnet::logthis("Available space $Apache::londefdef::table[-1]{'width'}");
  my @length_row_final = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[0]);   for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
  for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {      if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]==0) {
     my @length_row = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[$in]);   $empty_columns++;
     for (my $jn=0;$jn<=$#length_row;$jn++) {      } else {
  if ($length_row_final[$jn]<$length_row[$jn]) {$length_row_final[$jn]=$length_row[$jn];}   $available_space=$available_space-$Apache::londefdef::table[-1]{'TeXlen'}[0][$jn];
     }      }
  }   }
  #continues trying estimate the width of raw data          #boundaries for contents columns
  my @length_raw_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);   my @min_len=();#columns can not be narrower 
  for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {   my @max_len=();#maximum length of column
     my @length_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[$in]);   for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
     for (my $jn=0;$jn<=$#length_row;$jn++) {   my ($localmin,$localmax)=(0,0);
  if ($length_raw_row[$jn]<$length_row[$jn]) {$length_raw_row[$jn]=$length_row[$jn];}   for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     }      if ($localmin<$Apache::londefdef::table[-1]{'minlen'}[$in][$jn]) {
  }   $localmin=$Apache::londefdef::table[-1]{'minlen'}[$in][$jn];
         #comparing of TeXwidth and raw data width      }
  my $available_length=$Apache::londefdef::table[-1]{'width'};      if ($localmax<$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn]) {
  my $needed=0;   $localmax=$Apache::londefdef::table[-1]{'maxlen'}[$in][$jn];
  for (my $jn=0;$jn<=$#length_row_final;$jn++) {      }
     if ($length_row_final[$jn]!=0) {   }
  $available_length=$available_length-$length_row_final[$jn];   push @min_len, $localmin;
  $needed++;   push @max_len, $localmax;
     }   }
  }   for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
  $needed=$#length_row_final-$needed+1;      my $localmin=0,;
  for (my $jn=0;$jn<=$#length_row_final;$jn++) {      for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     if ($length_row_final[$jn]==0) {   if ($localmin<$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn]) {
  if ($length_raw_row[$jn]<$available_length) {      $localmin=$Apache::londefdef::table[-1]{'objectlen'}[$in][$jn];
     $length_row_final[$jn]=$length_raw_row[$jn];   }
     $available_length=$available_length-$length_raw_row[$jn];      }
     $needed--;      if ($max_len[$jn]<$localmin) {$max_len[$jn]=$localmin;}#object size is bigger
       if ($min_len[$jn]<$localmin) {$min_len[$jn]=$localmin;}#object size is bigger
       if ($Apache::londefdef::table[-1]{'TeXlen'}[0][$jn]!=0) {
    $min_len[$jn]=0;
    $max_len[$jn]=0;
       }
    }
          #final adjustment of column width
    my @fwidth=@{$Apache::londefdef::table[-1]{'TeXlen'}[0]};#final width array
    my @adjust=();
           #step 1. adjustment by maximum value
    my $space_neeeded=0;
    for (my $jn=0;$jn<=$#max_len;$jn++) {
       $space_neeeded=$space_neeeded+$max_len[$jn];
    }
    if ($space_neeeded<=$available_space) {
       for (my $jn=0;$jn<=$#max_len;$jn++) {
    if ($fwidth[$jn]==0) {
       $fwidth[$jn]=$max_len[$jn];
    }
       }
    } else {
           #step 2. adjustment by minimum value (estimation)
       $space_neeeded=0;
       for (my $jn=0;$jn<=$#min_len;$jn++) {
    $space_neeeded+=$min_len[$jn];
       }
       if ($space_neeeded>$available_space) {
    $WARNING=' \textbf{NOT ENOUGH SPACE FOR TABLE} ';
    for (my $jn=0;$jn<=$#max_len;$jn++) {
       if ($fwidth[$jn]==0) {
    $fwidth[$jn]=$min_len[$jn];
       }
    }
       } else {
         #step 3. adjustment over minimal + corrections
    my $enlarge_coef=$available_space/$space_neeeded;
    my $acsessive=0;
    for (my $jn=0;$jn<=$#min_len;$jn++) {
       $adjust[$jn]=$min_len[$jn]*$enlarge_coef;
       if ($adjust[$jn]>$max_len[$jn]) {
    $fwidth[$jn]=$max_len[$jn];
    $acsessive=$acsessive+$adjust[$jn]-$max_len[$jn];
    $adjust[$jn]=0;
       }
    }
    if ($acsessive>0) {
    #we have an excess of space and can redistribute it
       my $notempty_columns=0;
       for (my $jn=0;$jn<=$#min_len;$jn++) {
    if ($adjust[$jn]!=0) {
       $notempty_columns++;
    }
       }
       my $per_column=$acsessive/$notempty_columns;
       for (my $jn=0;$jn<=$#min_len;$jn++) {
    if ($adjust[$jn]!=0) {
       $adjust[$jn]+=$per_column;
       $fwidth[$jn]=$adjust[$jn];
    }
       }
  }   }
     }      }
  }   }
  for (my $jn=0;$jn<=$#length_row_final;$jn++) {          #recalculation for the use of all available width if width is defined in %
     if ($length_row_final[$jn]==0) {          if ($Apache::londefdef::table[-1]{'percent'}==1) {
  $length_row_final[$jn]=0.9*$available_length/$needed;      my $current=0; 
       for (my $i=0;$i<=$#fwidth;$i++) {  
    $current+=$fwidth[$i];
       }
       my $coef=$Apache::londefdef::table[-1]{'width'}/$current;
       for (my $i=0;$i<=$#fwidth;$i++) {  
    $fwidth[$i]*=$coef;
       }
    }
           #removing of empty columns if allowed
           my $permission=&Apache::lonxml::get_param('TeXDropEmptyColumns',$parstack,$safeeval,undef,0);
    if ($permission eq 'yes') {
       my @cleaned_table=();
               my @cleaned_header=();
       my $colind=0;
       for (my $jn=0;$jn<=$Apache::londefdef::table[-1]{'counter_columns'};$jn++) {
    if ($fwidth[$jn]!=0) {
       #we need to copy column
       for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
    $cleaned_table[$in][$colind]=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
    $cleaned_header[$colind]=$fwidth[$jn];
       }
       $colind++;
    }
     }      }
       $Apache::londefdef::table[-1]{'content'}=\@cleaned_table;
       @fwidth=@cleaned_header;
    }
    #construct header of the table
    my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
    for (my $in=0;$in<=$#fwidth;$in++) {
       $header_of_table.='p{'.$fwidth[$in].' mm}'.$Apache::londefdef::table[-1]{'vvinc'};
  }   }
    $header_of_table .= '}';
  #fill the table   #fill the table
  for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {   for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
     for (my $jn=0;$jn<=$#length_row_final;$jn++) {      for (my $jn=0;$jn<=$#fwidth;$jn++) {
  my $substituted=$length_row_final[$jn];   if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
  $Apache::londefdef::table[-1]{'rowdata'}[$in]=~s/TOBECHANGEDONNUMBER/$substituted mm/;      $output.='\begin{center}';
     }   } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
     $output .=  $Apache::londefdef::table[-1]{'rowdata'}[$in];      $output.=' \hfill \llap{'
     chop $output;   }
     $output .= ' \\\\ ';   $output.=$Apache::londefdef::table[-1]{'content'}[$in][$jn];
    if ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'c') {
       $output.='\end{center}';
    } elsif ($Apache::londefdef::table[-1]{'align'}[$in][$jn] eq 'r') {
       $output.='} ';
    }
                   if ($jn!=$#fwidth) {$output.=' '.$Apache::londefdef::table[-1]{'vinc'};}
       }
       $output.=' \\\\ '.$Apache::londefdef::table[-1]{'hinc'}.' ';
  }   }
  $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';   $Apache::londefdef::table[-1]{'output'} .= $header_of_table.$Apache::londefdef::table[-1]{'hinc'}.$output.'\end{tabular}\strut\newline\strut ';
  if ($#Apache::londefdef::table > 0) {       if ($#Apache::londefdef::table > 0) {    
     my $inmemory = $Apache::londefdef::table[-1]{'output'};      my $inmemory = $Apache::londefdef::table[-1]{'output'};
     pop @Apache::londefdef::table;      pop @Apache::londefdef::table;
Line 1898  sub start_tr { Line 2039  sub start_tr {
  $currentstring = $token->[4];        $currentstring = $token->[4];     
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $Apache::londefdef::table[-1]{'row_number'}++;   $Apache::londefdef::table[-1]{'row_number'}++;
  my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);   my $alignchar=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
  if ($alignchar ne '') {   if ($alignchar ne '') {
     push @ {$Apache::londefdef::table[-1]{'rows'} }, $alignchar;      push @ {$Apache::londefdef::table[-1]{'rows'} },substr($alignchar,0,1);
  } else {   } else {
     push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';      push @ {$Apache::londefdef::table[-1]{'rows'} }, 'l';
  }   }
  push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});   push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
  $Apache::londefdef::table[-1]{'counter_columns'} = -1;   $Apache::londefdef::table[-1]{'counter_columns'} = -1;
  $Apache::londefdef::table[-1]{'TeXlength'} = '';   push @ {$Apache::londefdef::table[-1]{'TeXlen'}}, [];
   $Apache::londefdef::table[-1]{'length'} = '';   push @ {$Apache::londefdef::table[-1]{'objectlen'}}, [];
    push @ {$Apache::londefdef::table[-1]{'minlen'}}, [];
    push @ {$Apache::londefdef::table[-1]{'maxlen'}}, [];
    push @ {$Apache::londefdef::table[-1]{'content'}}, [];
     }       } 
     return $currentstring;      return $currentstring;
 }  }
Line 1921  sub end_tr { Line 2065  sub end_tr {
  if ($Apache::londefdef::TD_redirection) {   if ($Apache::londefdef::TD_redirection) {
     &end_td_tex($parstack,$parser,$safeeval);          &end_td_tex($parstack,$parser,$safeeval);    
  }   }
  push @{ $Apache::londefdef::table[-1]{'TeXlengthrow'} },$Apache::londefdef::table[-1]{'TeXlength'};  
  push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};  
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 1959  sub tag_check { Line 2101  sub tag_check {
     
 sub start_td_tex {  sub start_td_tex {
     my ($parstack,$parser,$safeeval) = @_;      my ($parstack,$parser,$safeeval) = @_;
     my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);      my $alignchar = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
     if ($what_to_push eq '') {      if ($alignchar eq '') {
  $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;   $alignchar = $Apache::londefdef::table[-1]{'rows'}[-1];
     }      }
     push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;      push @{ $Apache::londefdef::table[-1]{'align'}[$Apache::londefdef::table[-1]{'row_number'}] }, $alignchar;
     $Apache::londefdef::table[-1]{'counter_columns'}++;      $Apache::londefdef::table[-1]{'counter_columns'}++;
       my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
       if (defined $TeXwidth) {
    my $current_length=&recalc($TeXwidth);
    $current_length=~/(\d+\.?\d*)/;
    push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$1;
       }
     &Apache::lonxml::startredirection();      &Apache::lonxml::startredirection();
     return '';      return '';
 }  }
Line 1975  sub end_td_tex { Line 2123  sub end_td_tex {
     my $data=&Apache::lonxml::endredirection();      my $data=&Apache::lonxml::endredirection();
     my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);      my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
     if (defined $TeXwidth) {      if (defined $TeXwidth) {
  my $current_length=&recalc($TeXwidth);   push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
  $current_length=~/(\d+)/;   push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
  $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';   push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
  $Apache::londefdef::table[-1]{'length'} .= '0,';  
     } else {      } else {
  if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {   if (($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) or ($data=~m/\[(\d+\.?\d*)\s*mm\]/)) {
     my $current_length=&recalc($1);      my $garbage_data=$data;
     $current_length=~/(\d+\.?\d*)/;      my $fwidth=0;
     $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';              while ($garbage_data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
     $Apache::londefdef::table[-1]{'length'} .= '0,';   my $current_length=&recalc($1);
    $current_length=~/(\d+\.?\d*)/;
    if ($fwidth<$1) {$fwidth=$1;}
    $garbage_data=~s/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)//;
       }
               while ($garbage_data=~m/\[(\d+\.?\d*)\s*mm\]/) {
    my $current_length=$1;
    if ($fwidth<$current_length) {$fwidth=$current_length;}
    $garbage_data=~s/\[(\d+\.?\d*)\s*mm\]//;
       }
       push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$fwidth;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
  } else {     } else {  
     $data=~s/^\s+(\S.*)/$1/;       $data=~s/^\s+(\S.*)/$1/; 
     $data=~s/(.*\S)\s+$/$1/;      $data=~s/(.*\S)\s+$/$1/;
     $data=~s/(\s)+/$1/;      $data=~s/(\s)+/$1/;
     my $current_length=0;      my ($current_length,$min_length)=(0,0);
     if ($data=~/\\vskip/) {      if ($data=~/\\vskip/) {
                 my $newdata=$data;                  my $newdata=$data;
  $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;   $newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
  my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);   my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
  foreach my $elementdata (@newdata) {   foreach my $elementdata (@newdata) {
     my $lengthnewdata=1.8*LATEX_length($elementdata);      my $lengthnewdata=2.5*&LATEX_length($elementdata);
     if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}      if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
                       my @words=split(/ /,$elementdata);
       foreach my $word (@words) {
    my $lengthword=2.5*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
  }   }
     } else {      } else {
  $current_length=1.8*LATEX_length($data);   $current_length=2.5*&LATEX_length($data);
                       my @words=split(/ /,$data);
       foreach my $word (@words) {
    my $lengthword=2.5*&LATEX_length($word);
    if ($min_length<$lengthword) {$min_length=$lengthword;}
       }
     }      }
     $Apache::londefdef::table[-1]{'length'} .= $current_length.',';      push @ {$Apache::londefdef::table[-1]{'TeXlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
     $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';      push @ {$Apache::londefdef::table[-1]{'objectlen'}[$Apache::londefdef::table[-1]{'row_number'}] },'0';
       push @ {$Apache::londefdef::table[-1]{'maxlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$current_length;
       push @ {$Apache::londefdef::table[-1]{'minlen'}[$Apache::londefdef::table[-1]{'row_number'}] },$min_length;
  }           }        
     }      }
  for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {            for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {         
     $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;      $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
  }   }
     @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};      push @ {$Apache::londefdef::table[-1]{'content'}[-1] },$data;
     return'';      return'';
 }  }
   
Line 2085  sub start_img { Line 2257  sub start_img {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;      my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,      my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
  undef,1);   undef,1);
       if (not $src and ($target eq 'web' or $target eq 'tex')) { 
    my $inside = &Apache::lonxml::get_all_text("/img",$parser);
    &Apache::lonnet::logthis("inside was $inside");
    return '';
       }
     $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;      $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
     my $currentstring = '';      my $currentstring = '';
     my $width_param = '';  
     my $height_param = '';  
     my $scaling = .3;      my $scaling = .3;
     if ($target eq 'web') {      if ($target eq 'web') {
  if ($ENV{'browser.imagesuppress'} ne 'on') {   if ($ENV{'browser.imagesuppress'} ne 'on') {
Line 2104  sub start_img { Line 2279  sub start_img {
  }   }
     } elsif ($target eq 'tex') {      } elsif ($target eq 'tex') {
  $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);   $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
  &image_replication($src);          #if uploaded restore the path
    if ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/simplepage\/([^\/]+)$/) {
       $src=&Apache::loncommon::propath($1,$2).'/userfiles/simplepage/'.$3;
    } elsif ($src=~/^\/uploaded\/([^\/]+)\/([^\/]+)\/aboutme\/([^\/]+)$/) {
       $src=&Apache::loncommon::propath($1,$2).'/userfiles/aboutme/'.$3;
    }
  #if original gif/jpg/png file exist do following:   #if original gif/jpg/png file exist do following:
  if (-e $src) {             if (-e $src) {
     #defines the default size of image      #what is the image size?
     my $image = Image::Magick->new;      my $width_param=&image_size($src,$scaling,$parstack,$safeeval);
     my $current_figure = $image->Read($src);              my ($file,$path)=&file_path($src); 
     $width_param = $image->Get('width') * $scaling;;  
     $height_param = $image->Get('height') * $scaling;;  
     undef $image;  
     #do we have any specified size of the picture?  
     my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);  
     my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);  
     my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,  
    undef,1);  
     if ($TeXwidth ne '') {    
  if ($TeXwidth=~/(\d+)\s*\%/) {  
     $width_param = $1*$ENV{'form.textwidth'}/100;  
  } else {   
     $width_param = $TeXwidth;  
  }  
     } elsif ($TeXheight ne '') {  
  $width_param = $TeXheight/$height_param*$width_param;  
     } elsif ($width ne '') {  
  $width_param = $width*$scaling;        
     }  
     if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}  
     my $file;  
     my $path;  
     if ($src =~ m!(.*)/([^/]*)$!) {  
  $file = $2;   
  $path = $1.'/';   
     }   
     my $newsrc = $src;      my $newsrc = $src;
     $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;      $newsrc =~ s/\.(gif|jpg|png)$/.eps/i;
     $file=~s/\.(gif|jpg|png)$/.eps/i;      $file=~s/\.(gif|jpg|png)$/.eps/i;
Line 2155  sub start_img { Line 2309  sub start_img {
  $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';   $currentstring .= '\vskip 1 mm \noindent\graphicspath{{'.$path.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
     }      }
  } else {   } else {
     #there aren't eps or ps - so create eps       #care about eps dynamical generation
     my $temp_file;      $currentstring.='\vskip 1 mm '.&eps_generation($src,$file,$width_param);
     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";  
     $temp_file = Apache::File->new('>>'.$filename);   
     print $temp_file "$src\n";  
     $newsrc=~s/\/home\/httpd\/html\/res//;  
     $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;  
     $currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';  
  }   }
     }      }
  } else {   } else {
Line 2199  sub start_img { Line 2347  sub start_img {
  if ($height) { $currentstring.=' height="'.$height.'" '; }   if ($height) { $currentstring.=' height="'.$height.'" '; }
  $currentstring .= ' />';   $currentstring .= ' />';
     } elsif ($target eq 'modified') {      } elsif ($target eq 'modified') {
  my $constructtag=&Apache::edit::get_new_args($token,$parstack,   my ($osrc,$owidth,$oheight)=
      $safeeval,'src','alt',      ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
      'TeXwidth','TeXheight',   my $ctag=&Apache::edit::get_new_args($token,$parstack,
      'width','height');       $safeeval,'src','alt',
  if (!$token->[2]{'width'} && !$token->[2]{'height'}) {       'TeXwidth','TeXheight',
     $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);       'width','height');
     &image_replication($src);   my ($nsrc,$nwidth,$nheight)=
     if (-e $src) {      ($token->[2]{'src'},$token->[2]{'width'},$token->[2]{'height'});
  my $image = Image::Magick->new;   my $loc=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$nsrc);
  my ($width, $height, $size, $format) = $image->Ping($src);   &image_replication($loc);
  if ($width && $height) {   my ($iwidth,$iheight);
     $token->[2]{'width'} =$width;   if (-e $loc) {
     $token->[2]{'height'}=$height;      my $image = Image::Magick->new;
     $constructtag=1;      $image->Read($loc);
       ($iwidth, $iheight) = ($image->Get('width'),
      $image->Get('height'));
    }
    if ($osrc ne $nsrc || (!$nwidth && !$nheight)) {
       # changed image or no size specified,
               # if they didn't explicitly change the 
               # width or height use the ones from the image
       if ($iwidth && $iheight) {
    if ($owidth == $nwidth || (!$nwidth && !$nheight)) {
       $token->[2]{'width'} = $iwidth;$ctag=1;
    }
    if ($oheight == $nheight || (!$nwidth && !$nheight)) {
       $token->[2]{'height'}=$iheight;$ctag=1;
  }   }
     }      }
  }   }
  if ($constructtag) {$currentstring=&Apache::edit::rebuild_tag($token);}   my ($cwidth,$cheight)=($token->[2]{'width'},$token->[2]{'height'});
    # if we don't have a width or height
    if ($iwidth && $cwidth && !$cheight) {
       $token->[2]{'height'}=int(($cwidth/$iwidth)*$iheight);$ctag=1;
    }
    if ($iheight && $cheight && !$cwidth) {
       $token->[2]{'width'}=int(($cheight/$iheight)*$iwidth);$ctag=1;
    }
    if ($ctag) {$currentstring=&Apache::edit::rebuild_tag($token);}
     }      }
     return $currentstring;      return $currentstring;
 }  }
Line 3345  sub image_replication { Line 3514  sub image_replication {
     return '';      return '';
 }  }
   
   sub image_size {
       my ($src,$scaling,$parstack,$safeeval)=@_;
       #size of image from gif/jpg/jpeg/png 
       my $image = Image::Magick->new;
       my $current_figure = $image->Read($src);
       my $width_param = $image->Get('width') * $scaling;;
       my $height_param = $image->Get('height') * $scaling;;
       undef $image;
       #do we have any specified LaTeX size of the picture?
       my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval);
       my $TeXheight = &Apache::lonxml::get_param('TeXheight',$parstack,$safeeval);
       #do we have any specified web size of the picture?
       my $width = &Apache::lonxml::get_param('width',$parstack,$safeeval,
      undef,1);
       if ($TeXwidth ne '') {  
    if ($TeXwidth=~/(\d+)\s*\%/) {
       $width_param = $1*$ENV{'form.textwidth'}/100;
    } else { 
       $width_param = $TeXwidth;
    }
       } elsif ($TeXheight ne '') {
    $width_param = $TeXheight/$height_param*$width_param;
       } elsif ($width ne '') {
    $width_param = $width*$scaling;      
       }
       if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
       return $width_param;
   }
   
   sub eps_generation {
       my ($src,$file,$width_param) = @_;     
       my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
       my $temp_file = Apache::File->new('>>'.$filename); 
       print $temp_file "$src\n";
       my $newsrc = $src;
       $newsrc =~ s/(\.gif|\.jpg|\.jpeg)$/\.eps/i;
       $newsrc=~s/\/home\/httpd\/html\/res//;
       $newsrc=~s/\/home\/([^\/]*)\/public_html\//\/$1\//;
       $newsrc=~s/\/\.\//\//;
       $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
       if ($newsrc=~/\/home\/httpd\/lonUsers\//) {
    $newsrc=~s/\/home\/httpd\/lonUsers//;
    $newsrc=~s/\/([^\/]+)\/(\w)\/(\w)\/(\w)\//\/$1\//;
       }
       return ' \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
   }
   
   sub file_path {     
       my $src=shift;
       my ($file,$path); 
       if ($src =~ m!(.*)/([^/]*)$!) {
    $file = $2; 
    $path = $1.'/'; 
       } 
       return $file,$path;
   }
   
 sub recalc {  sub recalc {
     my $argument = shift;      my $argument = shift;
     if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}      if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
Line 3365  sub recalc { Line 3591  sub recalc {
   
 sub LATEX_length {  sub LATEX_length {
     my $garbage=shift;      my $garbage=shift;
     $garbage=~s/^\s+(\S.*)/$1/;       $garbage=~s/^\s+$//;
     $garbage=~s/(.*\S)\s+$/$1/;      $garbage=~s/^\s+(\S.*)/$1/;#space before 
     $garbage=~s/(\s)+/$1/;      $garbage=~s/(.*\S)\s+$/$1/;#space after 
     $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;      $garbage=~s/(\s)+/$1/;#only one space
     $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$|\$)//g;      $garbage=~s/(\\begin{([^\}]+)}|\\end{([^\}]+)})//g;#remove LaTeX \begin{...} and \end{...}
     $garbage=~s/(\\alpha|\\beta|\\gamma|\\delta|\\epsilon|\\verepsilon|\\zeta|\\eta|\\theta|\\vartheta|\\iota|\\kappa|\\lambda|\\mu|\\nu|\\xi|\\pi|\\varpi|\\rho|\\varrho|\\sigma|\\varsigma|\\tau|\\upsilon|\\phi|\\varphi|\\chi|\\psi|\\omega|\\Gamma|\\Delta|\\Theta|\\Lambda|\\Xi|\\Pi|\\Sigma|\\Upsilon|\\Phi|\\Psi|\\Omega)/1/g;      $garbage=~s/(\$\_\{|\$\_|\$\^{|\$\^|\}\$)//g;#remove $_{,$_,$^{,$^,}$
       $garbage=~s/([^\\])\$/$1/g;#$
       $garbage=~s/(\\ensuremath\{\_\{|\\ensuremath\{\_|\\ensuremath\{\^{|\\ensuremath\{\^|\})//g;#remove \ensuremath{...}
      $garbage=~s/(\\alpha|\\beta|\\gamma|\\delta|\\epsilon|\\verepsilon|\\zeta|\\eta|\\theta|\\vartheta|\\iota|\\kappa|\\lambda|\\mu|\\nu|\\xi|\\pi|\\varpi|\\rho|\\varrho|\\sigma|\\varsigma|\\tau|\\upsilon|\\phi|\\varphi|\\chi|\\psi|\\omega|\\Gamma|\\Delta|\\Theta|\\Lambda|\\Xi|\\Pi|\\Sigma|\\Upsilon|\\Phi|\\Psi|\\Omega)/1/g;
     $garbage=~s/(\\pm|\\mp|\\times|\\div|\\cdot|\\ast|\\star|\\dagger|\\ddagger|\\amalg|\\cap|\\cup|\\uplus|\\sqcap|\\sqcup|\\vee|\\wedge|\\oplus|\\ominus|\\otimes|\\circ|\\bullet|\\diamond|\\lhd|\\rhd|\\unlhd|\\unrhd|\\oslash|\\odot|\\bigcirc|\\Box|\\Diamond|\\bigtriangleup|\\bigtriangledown|\\triangleleft|\\triangleright|\\setminus|\\wr)/1/g;      $garbage=~s/(\\pm|\\mp|\\times|\\div|\\cdot|\\ast|\\star|\\dagger|\\ddagger|\\amalg|\\cap|\\cup|\\uplus|\\sqcap|\\sqcup|\\vee|\\wedge|\\oplus|\\ominus|\\otimes|\\circ|\\bullet|\\diamond|\\lhd|\\rhd|\\unlhd|\\unrhd|\\oslash|\\odot|\\bigcirc|\\Box|\\Diamond|\\bigtriangleup|\\bigtriangledown|\\triangleleft|\\triangleright|\\setminus|\\wr)/1/g;
     $garbage=~s/(\\le|\\ll|\\leq|\\ge|\\geq|\\gg|\\neq|\\doreq|\\sim|\\simeq|\\subset|\\subseteq|\\sqsubset|\\sqsubseteq|\\in|\\vdash|\\models|\\supset|\\supseteq|\\sqsupset|\\sqsupseteq|\\ni|\\dash|\\perp|\\approx|\\cong|\\equiv|\\propto|\\prec|\\preceq|\\parallel|\\asymp|\\smile|\\frown|\\bowtie|\\succ|\\succeq|\\mid)/1/g;      $garbage=~s/(\\le|\\ll|\\leq|\\ge|\\geq|\\gg|\\neq|\\doreq|\\sim|\\simeq|\\subset|\\subseteq|\\sqsubset|\\sqsubseteq|\\in|\\vdash|\\models|\\supset|\\supseteq|\\sqsupset|\\sqsupseteq|\\ni|\\dash|\\perp|\\approx|\\cong|\\equiv|\\propto|\\prec|\\preceq|\\parallel|\\asymp|\\smile|\\frown|\\bowtie|\\succ|\\succeq|\\mid)/1/g;
     $garbage=~s/(\\not<|\\\\not\\le|\\not\\prec|\\not\\preceq|\\not\\subset|\\not\\subseteq|\\not\\sqsubseteq|\\not\\in|\\not>|\\not\\ge|\\not\\succ|\\notsucceq|\\not\\supset|\\notsupseteq|\\not\\sqsupseteq|\\notin|\\not=|\\not\\equiv|\\not\\sim|\\not\\simeq|\\not\\approx|\\not\\cong|\\not\\asymp)/1/g;      $garbage=~s/(\\not<|\\\\not\\le|\\not\\prec|\\not\\preceq|\\not\\subset|\\not\\subseteq|\\not\\sqsubseteq|\\not\\in|\\not>|\\not\\ge|\\not\\succ|\\notsucceq|\\not\\supset|\\notsupseteq|\\not\\sqsupseteq|\\notin|\\not=|\\not\\equiv|\\not\\sim|\\not\\simeq|\\not\\approx|\\not\\cong|\\not\\asymp)/1/g;
     $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/1/g;      $garbage=~s/(\\leftarrow|\\gets|\\Leftarrow|\\rightarrow|\\to|\\Rightarrow|\\leftrightarrow|\\Leftrightarrow|\\mapsto|\\hookleftarrow|\\leftharpoonup|\\leftkarpoondown|\\rightleftharpoons|\\longleftarrow|\\Longleftarrow|\\longrightarrow|\\Longrightarrow|\\longleftrightarrow|\\Longleftrightarrow|\\longmapsto|\\hookrightarrow|\\rightharpoonup|\\rightharpoondown|\\uparrow|\\Uparrow|\\downarrow|\\Downarrow|\\updownarrow|\\Updownarrow|\\nearrow|\\searrow|\\swarrow|\\nwarrow)/11/g;
     $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/ /g;      $garbage=~s/(\\aleph|\\hbar|\\imath|\\jmath|\\ell|\\wp|\\Re|\\Im|\\mho|\\prime|\\emptyset|\\nabla|\\surd|\\partial|\\top|\\bot|\\vdash|\\dashv|\\forall|\\exists|\\neg|\\flat|\\natural|\\sharp|\\\||\\angle|\\backslash|\\Box|\\Diamond|\\triangle|\\clubsuit|\\diamondsuit|\\heartsuit|\\spadesuit|\\Join|\\infty)/11/g;
     $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;       $garbage=~s/(\\hat{([^}]+)}|\\check{([^}]+)}|\\dot{([^}]+)}|\\breve{([^}]+)}|\\acute{([^}]+)}|\\ddot{([^}]+)}|\\grave{([^}]+)}|\\tilde{([^}]+)}|\\mathring{([^}]+)}|\\bar{([^}]+)}|\\vec{([^}]+)})/$1/g;
       #remove some other LaTeX command
       $garbage=~s|\\(\w+)\\|\\|g;  
       $garbage=~s|\\(\w+)(\s*)|$2|g;  
       $garbage=~s|\+|11|g;
   
       &Apache::lonnet::logthis("garbage was just $garbage");
     my  $value=length($garbage);      my  $value=length($garbage);
     return $value;      return $value;
 }  }
Removed from v.1.187  
changed lines
  Added in v.1.221

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