texdoctk.pl: works on Unix/win32 now, bug fixed.

git-svn-id: svn://tug.org/texlive/trunk@7368 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 1 insertions, 1794 deletions

diff --git a/Master/bin/x86_64-linux/texdoctk b/Master/bin/x86_64-linux/texdoctk
index c8f60e28bf6..56729104154 100755..120000
--- a/Master/bin/x86_64-linux/texdoctk
+++ b/Master/bin/x86_64-linux/texdoctk
@@ -1,1794 +1 @@
-#!/usr/bin/env perl
-# We started with a hack provided by Thomas Esser. This expression replaces
-# the unix specific line \type {#!/usr/local/bin/perl -w}.
-###############################################################################
-# texdoctk v.0.6.0 (Nov 5, 2004) - GUI for TeX documentation access
-# Copyright (C) 2000-2004  Thomas Ruedas
-# This program is provided under the GNU Public License; see the file
-# README.texdoctk for details about requirements, installation, configuration,
-# and the full disclaimer.
-###############################################################################
-use strict;
-use Tk;
-use Getopt::Long;
-Getopt::Long::config('bundling');
-use File::Basename;
-
-my $IsWin32 = ($^O =~ /MSWin32/i);
-
-#if ($IsWin32) {
-#  use Win32::Registry;
-#  use Win32::API;
-#}
-
-# initialization of some internal variables
-$|=1;
-my $quiet=1;
-my $autoview;
-my $xfmt_viewer=1,
-my @tdcolors;
-my %butcol;
-my $srchentry;
-my $srchflag=0;
-my $tmpfno;
-# system variables
-my ($texmfmain,$texmfdist,$texmfdoc,$texmflocal,$texmfhome,
-    $texdocpath,$distdocpath,$docdocpath,$localdocpath,$homedocpath,
-    $datadir,
-    $dvi_viewer,$dvips_conv,$ps_viewer,$pdf_viewer,
-    $pdfps_conv,$html_viewer,$htmlps_conv,$htmlps_redir,
-    $txt_viewer,$txtps_conv,$txtps_redir,$print_cmd);
-
-# defaults: unix values
-my $qq="'";
-my $HomeEnv=$ENV{HOME};
-my $TeXDocRcDefaults="texdocrc.defaults";
-my $TempDir; $TempDir=$ENV{TMPDIR} or $TempDir="/tmp";
-my $CmdConsole="xterm -e ";
-
-if ($IsWin32) {
-  $qq = "\"";
-  $HomeEnv = &GetHomeDir;
-  chomp $HomeEnv;
-  $TeXDocRcDefaults = "texdocrc-win32.defaults";
-  $TempDir = &GetTempPath;
-  $CmdConsole = "command /c ";
-}
-
-my $myrc="${HomeEnv}/.texdocrc"; # optional personal settings file
-
-my ($line,@dummy);
-my @tmpfiles;
-# read system-wide defaults from texdocrc.defaults
-my $sysrc=`kpsewhich --progname=texdoctk --format=${qq}other text files${qq} ${TeXDocRcDefaults}`;
-my $database=`kpsewhich --progname=texdoctk --format=${qq}other text files${qq} texdoctk.dat`;
-my $locdatabase=`kpsewhich --progname=texdoctk --format=${qq}other text files${qq} texdoctk-local.dat`;
-my $homedatabase=`kpsewhich --progname=texdoctk --format=${qq}other text files${qq} texdoctk-pers.dat`;
-chomp $locdatabase;
-chomp $homedatabase;
-chomp $sysrc;
-&readrc($sysrc,1);
-@dummy=split("/",$sysrc);
-pop @dummy;
-$datadir=join('/',@dummy);
-# possibly use personal settings instead of defaults
-if (-e $myrc) { &readrc($myrc,2); }
-# command line options
-GetOptions('v'=>\$quiet,'a'=>\$autoview);
-my $special=0;
-my @button;
-$button[17]="Miscellaneous";
-my (@packname,@topic,@doc,@keywords,@maxind,%stydoc);
-# read database file
-my $i=-1;
-my $j;
-open(DATABASE,"$database") || &fatalmsg("Couldn't open database $database.\n");
-while ($line = <DATABASE>) {
-  LINETYPE: {
-      ($line =~ /^\@/) && do { # category
-	  ++$i;
-	  if ($i == $#button) {
-	      pop @button;
-	      push @button,(substr($line,1,-1));
-	      $special=1;
-	  } else {
-	      $button[$i]=substr($line,1,-1);
-	  }
-	  $j=0;
-	  last LINETYPE;
-      };
-      ($line =~ /^(#|$)/) && do { # comment or empty line
-	  last LINETYPE;
-      };
-#     list item
-       @dummy=split(";",$line);
-       $packname[$i][$j]=$dummy[0];
-       $topic[$i][$j]=$dummy[1];
-       $doc[$i][$j]=$dummy[2];
-       $keywords[$i][$j]=$dummy[3];
-       if ($doc[$i][$j] =~ /sty$/ && $keywords[$i][$j]) {
-	   $stydoc{"$doc[$i][$j]"}=substr($keywords[$i][$j],1,1);
-	   unless ($stydoc{"$doc[$i][$j]"} =~ /^\d$/) {
-	       $stydoc{"$doc[$i][$j]"}=0;
-	   }
-       }
-       $maxind[$i]=$j;
-       ++$j;
-  };
-}
-close(DATABASE);
-# Read site-local and user's database(s) if it/they exist(s)
-foreach my $dbfile ($locdatabase,$homedatabase) {
-  if (-e "$dbfile") {
-    open(DATABASE,"$dbfile") ||
-      print "Couldn't open additional database $dbfile.\n";
-    $i=17; # local/user: if no category is specified in database, add to "Misc"
-    while ($line = <DATABASE>) {
-    LINETYPE: {
-	($line =~ /^\@/) && do { # category
-	  $i=&arrindex(@button,substr($line,1,-1));
-	  if ($i >= $#button) {
-	    $i=$#button;
-	    pop @button;
-	    push @button,(substr($line,1,-1));
-	    $special=1;
-	  }
-	  last LINETYPE;
-	};
-	($line =~ /^(#|$)/) && do { # comment or empty line
-	  last LINETYPE;
-	};
-#       list item
-	@dummy=split(";",$line);
-	$j=&arrindex(@{$packname[$i]},$dummy[0]);
-	if ($j > $#{$packname[$i]}) {
-	  $packname[$i][$j]=$dummy[0];
-	  $topic[$i][$j]=$dummy[1];
-	  $doc[$i][$j]=$dummy[2];
-	  $keywords[$i][$j]=$dummy[3];
-	  if ($doc[$i][$j] =~ /sty$/ && $keywords[$i][$j]) {
-	    $stydoc{"$doc[$i][$j]"}=substr($keywords[$i][$j],1,1);
-	    unless ($stydoc{"$doc[$i][$j]"} =~ /^\d$/) {
-	      $stydoc{"$doc[$i][$j]"}=0;
-	    }
-	  }
-	  $maxind[$i]=$j;
-	  ++$j;
-	}
-      };
-    }
-    close(DATABASE);
-    $special=1 if ($i == 17 && $j > 0);
-  }
-}
-
-# Tk
-# hash table for toplevel windows; used to avoid multiple calls of same window
-my %tlwins;
-my %buttonlist;
-# create frames for main window: commands on top, frame for buttons below
-my $main=new MainWindow;
-$tlwins{'mainwindow'}{'addr'}=$main;
-$main->resizable(0,0);
-$main->title("TeX Documentation Browser");
-$main->bind('all','<Control-q>'=>\&clean_exit);
-$main->bind('all','<Control-m>'=>sub { $main->raise(); });
-$main->bind('all','<Control-h>'=>\&helptext);
-$main->bind('all','<Control-s>'=>sub { $main->raise(); &mksrch; });
-$main->bind('all','<Control-t>'=>\&settings);
-my $cmdframe=$main->Frame(-background=>"#ffcc99");
-my $buttonframe=$main->Frame;
-$cmdframe->pack(-side=>'top',-fill=>'x');
-$buttonframe->pack(-side=>'bottom');
-# normal cursor
-my $defcursor=$main->cget(-cursor);
-# make buttons for command frame
-my $Qbut=$cmdframe->Button(-text=>'Quit',%butcol,
-			   -command=>\&clean_exit)->pack(-side=>'left');
-$tlwins{'mainwindow'}{'buttons'}[0]=$Qbut;
-# define common default font for labels and text explicitly
-my $deffont=$Qbut->cget(-font);
-# ensure readability on high-res screens (suggested by R.Kotucha)
-$deffont='Helvetica -16 bold' if &x_resolution > 1200;
-$Qbut->configure(-font=>$deffont);
-$tlwins{'mainwindow'}{'buttons'}[1]=$cmdframe->Button(-text=>'Search',
-						      -font=>$deffont,%butcol,
-						      -command=>\&mksrch
-						      )->pack(-side=>'left');
-$tlwins{'mainwindow'}{'buttons'}[2]=$cmdframe->Button(-text=>'Help/About',
-						      -font=>$deffont,%butcol,
-						      -command=>\&helptext
-						      )->pack(-side=>'right');
-$tlwins{'mainwindow'}{'buttons'}[3]=$cmdframe->Button(-text=>'Settings',
-						      -font=>$deffont,%butcol,
-						      -command=>\&settings
-						      )->pack(-side=>'right');
-# make buttons for category button frame
-my $lbut=0;
-my $l;
-foreach (@button) { $l=length $_; $lbut=$l if ( $l > $lbut) }
-my @catg;
-my ($i2,$i3);
-my $nbutt=scalar @button;
-my $ncols=$nbutt/3-1;
-foreach (0..$ncols) {
-    $i=$_;
-    $i2=$i+$nbutt/3;
-    $i3=$i+2*$nbutt/3;
-    $catg[$i]=$buttonframe->Button(-text=>$button[$i],
-				   -font=>$deffont,%butcol,
-				   -width=>$lbut,
-				   -command=>[\&tpslct,$i,\@dummy])->grid
-	($catg[$i2]=$buttonframe->Button(-text=>$button[$i2],
-					 -font=>$deffont,%butcol,
-					 -width=>$lbut,
-					 -command=>[\&tpslct,$i2,\@dummy]),
-	 $catg[$i3]=$buttonframe->Button(-text=>$button[$i3],
-					 -font=>$deffont,%butcol,
-					 -width=>$lbut,
-					 -command=>[\&tpslct,$i3,\@dummy]));
-}
-# disable last button (lower right) if no local specials are found in list
-my $ncat;
-if ($special == 0) {
-    $catg[$#button]->configure(-state=>'disabled');
-    $ncat=$nbutt-1;
-} else {
-    $ncat=$nbutt;
-}
-for ($i=0,$j=4; $i<@catg; ++$i,++$j) {
-    $tlwins{'mainwindow'}{'buttons'}[$j]=$catg[$i];
-}
-MainLoop;
-
-########## SUBROUTINES ########################################################
-# toplevel for selecting a topic of a category for viewing or printing
-sub tpslct {
-    my($opt,@srchitems)=@_;
-    my (@lbitems,@lbdocs,$dspselect,$docselect,$wtitle);
-    if ($opt >= 0) {
-#       main window buttons
-#       see if toplevel window is already there
-	if (Exists($tlwins{$opt}{'addr'})) {
-	    $tlwins{$opt}{'addr'}->deiconify();
-	    $tlwins{$opt}{'addr'}->raise();
-	    return;
-	}
-	for ($j=0; $j <= $maxind[$opt]; ++$j) {
-	    push @lbitems,$topic[$opt][$j];
-	    push @lbdocs,$doc[$opt][$j];
-	}
-	$wtitle=$button[$opt];
-    } else {
-#       search results
-        my $spec_wtitle=shift @srchitems;
-	for ($j=0; $j < $#srchitems; $j+=2) {
-	    my $k=$j+1;
-	    push @lbitems,$topic[$srchitems[$j]][$srchitems[$k]];
-	    push @lbdocs,$doc[$srchitems[$j]][$srchitems[$k]];
-	}
-	$wtitle="Search results for $spec_wtitle";
-    }
-# toplevel window of category $opt with two frames
-    my $tpwin=$main->Toplevel(-title=>$wtitle);
-    $tlwins{$opt}{'addr'}=$tpwin;
-    my $tpdsp=$tpwin->Frame(-relief=>'groove')->pack(-side=>'top');
-    my $tpslc=$tpwin->Frame()->pack(-side=>'top');
-# selection frame with listbox and buttons
-#   label for listbox
-    my $tplabel=$tpslc->Label(-text=>'Topics',
-			      -font=>$deffont)->pack(-anchor=>'w',
-						     -side=>'top');
-#   listbox with optional scrollbar
-    my $tplist=$tpslc->Scrolled("Listbox",
-				-font=>$deffont,
-				-scrollbars=>'osoe',
-#				-height=>0,
-				-width=>0,
-				-selectmode=>'single',
-				-exportselection=>0,
-				-cursor=>'hand2')->pack(-side=>'left',
-							-fill=>'y',
-							-expand=>1);
-    $tplist->insert('end',@lbitems); # fill topics into listbox
-#   buttons frame
-    my $tpbframe=$tpslc->Frame(-borderwidth=>8);
-    $tpbframe->pack(-side=>'right');
-#   make buttons for command frame
-    my $n_buttons = 0;
-    $tlwins{$opt}{'buttons'}[$n_buttons++]=
-	$tpbframe->Button(-text=>'View',
-			  -font=>$deffont,%butcol,
-			  -command=>sub{ &viewslc($docselect,$tpbframe);},
-			  -width=>6)->pack(-side=>'top');
-    if (! $IsWin32) {
-      $tlwins{$opt}{'buttons'}[$n_buttons++]=
-	$tpbframe->Button(-text=>'Print',
-			  -font=>$deffont,%butcol,
-			  -command=>sub{ &prtslc($docselect,$tpbframe);},
-			  -width=>6)->pack(-side=>'top');
-    }
-    $tlwins{$opt}{'buttons'}[$n_buttons++]=
-	$tpbframe->Button(-text=>'Cancel',
-			  -font=>$deffont,%butcol,
-			  -command=>sub{ destroy $tpwin; undef $tlwins{$opt};},
-			  -width=>6)->pack(-side=>'bottom');
-#   if only 1 item is in the list (most likely in search results), select it
-    if (scalar @lbitems == 1) {
-        $tplist->selectionSet(0);
-        $dspselect=$lbitems[0];
-        $docselect=$lbdocs[0];
-	&viewslc($docselect,$tpbframe)
-	  if ($autoview && $wtitle =~ /^Search results/);
-    }
-# display frame
-    my $dsplabel=$tpdsp->Label(-text=>'Selection:',
-			       -font=>$deffont)->pack(-anchor=>'w',,
-							 -fill=>'x',
-							 -side=>'left');
-    my $dspslc=$tpdsp->Label(-textvariable=>\$dspselect,
-			     -font=>$deffont,
-			     -borderwidth=>2)->pack(-anchor=>'w',
-						    -fill=>'x',
-						    -side=>'right');
-# handle selection; only one selection possible
-    $tplist->bind('<Button-1>'=>sub{my ($slctind)=$tplist->curselection();
-				    $dspselect=$lbitems[$slctind];
-				    $docselect=$lbdocs[$slctind];});
-#   key bindings
-    $tplist->bind('<Double-Button-1>'=>sub{
-	&viewslc($docselect,$tpbframe);});
-    $tpwin->bind('<Control-v>'=>sub{
-	&viewslc($docselect,$tpbframe);});
-    $tpwin->bind('<Control-p>'=>sub{
-	&prtslc($docselect,$tpbframe);});
-    $tpwin->bind('<Control-c>'=>sub{destroy $tpwin; undef $tlwins{$opt};});
-    $tplist->bind('<Button-3>'=>sub{
-	if ($docselect) {
-	    &showpath($docselect,$tpbframe);
-	} else {
-	    &popmsg(2,"No selection;\nuse left mouse button.",$tpbframe);
-	}});
-}
-
-# view document selected in listbox
-sub viewslc {
-    my($slc,$parframe)=@_;
-    my $viewer;
-    my $itype=-1;
-    my $browser=0;
-    my $styflag=0;
-    unless (defined $slc) {
-	&popmsg(2,"No selection was made.",$parframe);
-	return;
-    }
-    $parframe->configure(-cursor=>'watch');
-    chomp $slc;
-    my @dummy=split('\.',$slc);
-  DOC_FORMAT: { # determine document type
-      ($dummy[-1] =~ /dvi/) && do { $viewer=$dvi_viewer; last DOC_FORMAT; };
-      ($dummy[-1] =~ /ps/) && do { $viewer=$ps_viewer; last DOC_FORMAT; };
-      ($dummy[-1] =~ /pdf/) && do { $viewer=$pdf_viewer; last DOC_FORMAT; };
-      ($dummy[-1] =~ /txt/ || $dummy[-1] =~ /faq$/) && do {
-	  $viewer=($txt_viewer eq "TDK_OWN" || 
-		   $txt_viewer =~ /xterm/) ?
-		       $txt_viewer : "${CmdConsole} $txt_viewer";
-	  last DOC_FORMAT;
-      };
-      ($dummy[-1] =~ /README/i || $dummy[-2] =~ /\/README$/i) && do {
-	  $viewer=($txt_viewer eq "TDK_OWN" || 
-		   $txt_viewer =~ /xterm/) ?
-		       $txt_viewer : "${CmdConsole} $txt_viewer";
-	  last DOC_FORMAT;
-      };
-      ($dummy[-1] =~ /htm/) && do {
-	  $viewer=$html_viewer;
-	  if ($html_viewer =~ /netscape/i) { # check if Netscape is open
-	      my $lockfile="${HomeEnv}/.netscape/lock";
-	      $browser=1 if (-e $lockfile || -l $lockfile);
-	  } elsif ($html_viewer =~ /mozilla/i) { # check if Mozilla is open
-	      my $mozcheck=
-		`mozilla -remote 'openFile($texmfmain/doc/index.html)'`;
-	      $browser=1 unless ($?);
-	  }
-	  last DOC_FORMAT;
-      };
-#     some packages have no normal documentation but useful info in the .sty
-      ($dummy[-1] =~ /sty$/) && do {
-	  $viewer=($txt_viewer eq "TDK_OWN" || 
-		   $txt_viewer =~ /xterm/) ?
-		       $txt_viewer : "${CmdConsole} $txt_viewer";
-	  $slc="../tex/$slc"; # .sty files are in ${tex,local}docpath/../tex/
-	  $styflag=1;
-	  last DOC_FORMAT;
-      };
-      $parframe->configure(-cursor=>$defcursor);
-      if ($xfmt_viewer != 1) {
-	&popmsg(2,"$dummy[-1]: not a known document format",$parframe);
-	return;
-      }
-  };
-    if ($viewer eq "") {
-      if ($xfmt_viewer == 1) {
-	    &popmsg(-1,'Unknown format; assuming plain text.',$parframe);
-	    $viewer=($txt_viewer eq "TDK_OWN" || 
-		     $txt_viewer =~ /xterm/) ?
-		       $txt_viewer : "${CmdConsole} $txt_viewer";
-      } else {
-	&popmsg(2,"$dummy[-1]: no viewer available/specified for this format",
-		$parframe);
-	$parframe->configure(-cursor=>$defcursor);
-	return;
-      }
-    }
-# build complete path and start viewer if file exists
-    my $slcdoc;
-    $slcdoc=&finddoc($slcdoc,$slc,$parframe);
-    if ($slcdoc ne "") {
-#       change to doc directory in case there are pictures
-	my $docpath=substr($slcdoc,0,(rindex($slcdoc,'/',(length $slcdoc))));
-	chomp $slcdoc;
-	chdir ($docpath);
-#       try to get doc out of .sty file
-	if ($styflag) {
-	    &popmsg(-1,'Trying to extract documentation out of .sty file;
-might be cluttered with program comments.',
-		    $parframe);
-	    $slcdoc=&stripsty($slcdoc,substr($slc,7));
-	}
-#       for text files use built-in text viewer if set
-	if ($IsWin32) {
-	  if ($viewer eq "TDK_OWN") {
- 	    &ShellExecute('open', $slcdoc);
- 	    $parframe->configure(-cursor=>$defcursor);
- 	    return;
-	  }
-	  else {
-	    system("$viewer $slcdoc");
-	  }
-	}
-	else {
-	  if ($viewer eq "TDK_OWN") {
- 	    &textview($slcdoc);
- 	    $parframe->configure(-cursor=>$defcursor);
- 	    return;
-	  }
-	  if ($quiet == 0) { # show messages
- 	    if ($browser == 0) { # normal viewers or new Netscape/Mozilla
-	      system("$viewer $slcdoc &");
- 	    } else { # open doc in existing Netscape/Mozilla window
-	      system("$viewer -remote 'openFile($slcdoc)' &");
-	      &popmsg(-1,"Opening document in existing $viewer window.",
-		      $parframe);
-	    }
-	  } else { # viewer messages written to /dev/null instead of terminal
- 	    if ($browser == 0) { # normal viewers or new Netscape/Mozilla
-	      system("perl -we 'use strict; \
-my \$dump=\"\"; \
-open(NULL,\">/dev/null\"); \
-open (VIEWQ,\"$viewer $slcdoc |\"); \
-while (\$dump=<VIEWQ>) { print NULL \$dump; } \
-close(VIEWQ); \
-close(NULL);' &");
-	    } else { # open doc in existing window (Netscape or Mozilla)
-	      # not quiet; I didn't get an inline perl call like in
-	      # the other branch working
-	      system("$viewer -remote 'openFile($slcdoc)' &");
-	      &popmsg(-1,"Opening document in existing $viewer window.",
-		      $parframe);
-	    }
-	  }
-	}
-      }
-    $parframe->configure(-cursor=>$defcursor);
-}
-
-# Tk widget for text document
-sub textview {
-    my($txtfile)=@_;
-#   see if toplevel window with this file is already there
-    if (Exists($tlwins{$txtfile}{'addr'})) {
-	$tlwins{$txtfile}{'addr'}->deiconify();
-	$tlwins{$txtfile}{'addr'}->raise();
-	return;
-    }
-    my $tfv_tk=$main->Toplevel(-title=>"Text file viewer");
-    $tfv_tk->resizable(0,1);
-    $tlwins{$txtfile}{'addr'}=$tfv_tk;
-    $tfv_tk->Label(-text=>"File: $txtfile",
-		   -font=>$deffont,
-		   -relief=>'ridge',
-		   -borderwidth=>3)->pack(-side=>'top',
-					  -fill=>'x',
-					  -ipady=>10,
-					  -anchor=>'s');
-    my $txtbody=$tfv_tk->Scrolled("Text",
-				  -relief=>'flat',
-				  -font=>$deffont,
-				  -height=>20,
-				  -width=>80,
-				  -scrollbars=>"e")->pack(-side=>'top',
-							  -fill=>'y',
-							  -expand=>1);
-    open(TXTFILE,"$txtfile");
-    while (<TXTFILE>) {	$txtbody->insert('end',$_); }
-    close(TXTFILE);
-    $txtbody->configure(-state=>'disabled');
-    $tlwins{$txtfile}{'buttons'}[0]=
-	$tfv_tk->Button(-text=>'Close',
-			-font=>$deffont,%butcol,
-			-command=>sub{ destroy $tfv_tk;
-				       undef $tlwins{$txtfile};
-				   })->pack(-side=>'bottom',
-					    -fill=>'x');
-    $tfv_tk->bind('<Control-c>'=>sub{destroy $tfv_tk;
-				     undef $tlwins{$txtfile};
-				 });
-}
-
-# print document selected in listbox
-sub prtslc {
-    my($slc,$parframe)=@_;
-    $tmpfno=&randname;
-    my $pstmpfile="${TempDir}/texdoc_$tmpfno.ps";
-    push @tmpfiles,$pstmpfile;
-    my $status;
-    chomp $slc;
-    unless (defined $slc) {
-	&popmsg(2,"No selection was made.",$parframe);
-	return;
-    }
-    if ($print_cmd eq "") {
-	&popmsg(2,"No printer specified.",$parframe);
-	return;
-    }
-# build complete path and check existence of file
-    my @dummy=split('\.',$slc);
-    if ($dummy[-1] =~ /sty$/) {
-	$slc="../tex/$slc"; # .sty files are in ${tex,local,home}docpath/../tex
-    }
-    my $slcdoc;
-    $slcdoc=&finddoc($slcdoc,$slc,$parframe);
-    return if ($slcdoc eq "");
-#   change to doc directory in case there are pictures
-    my $docpath=substr($slcdoc,0,(rindex($slcdoc,'/',(length $slcdoc))));
-    chdir ($docpath);
-  DOC_FORMAT: { # determine document type
-#     convert dvi files to ps before printing
-      ($dummy[-1] =~ /dvi/) && do {
-	  if ($dvips_conv eq "") {
-	      &popmsg(2,"No converter available for dvi->ps conversion.",
-		      $parframe);
-	      return;
-	  }
-	  &popmsg(-1,"Converting dvi to ps for printing and sending file to print...",$parframe);
-	  $status=system("$dvips_conv $slcdoc -o $pstmpfile");
-	  if ($status != 0) {
-	      &popmsg(2,"Error: Conversion dvi->ps failed!",$parframe);
-	  }
-	  last DOC_FORMAT;
-      };
-#     PostScript is printed directly
-      ($dummy[-1] =~ /ps/) && do {
-	  &popmsg(-1,"Sending file to $print_cmd...",$parframe);
-	  $pstmpfile=$slcdoc;
-	  last DOC_FORMAT;
-      };
-#     convert pdf files to ps before printing
-      ($dummy[-1] =~ /pdf/) && do {
-	  if ($pdfps_conv eq "") {
-	      &popmsg(2,"No converter available for pdf->ps conversion.",
-		      $parframe);
-	      return;
-	  }
-	  &popmsg(-1,"Converting pdf to ps for printing and sending file to print...",$parframe);
-	  system("$pdfps_conv $slcdoc $pstmpfile");
-	  last DOC_FORMAT;
-      };
-#     convert html files to ps before printing
-      ($dummy[-1] =~ /htm/) && do {
-	  if ($htmlps_conv eq "") {
-	      &popmsg(2,"No converter available for html->ps conversion.",
-		      $parframe);
-	      return;
-	  }
-	  &popmsg(-1,"Converting html to ps for printing and sending file to print...",$parframe);
-	  my $htmlps_redir_sign=($htmlps_redir == 1) ? ">" :"";
-	  system("$htmlps_conv $slcdoc $htmlps_redir_sign $pstmpfile");
-	  last DOC_FORMAT;
-      };
-#     convert txt files to ps before printing
-      ($dummy[-1] =~ /txt/ || $dummy[-1] =~ /faq$/
-       || $dummy[-1] =~ /README/i) && do {
-	  if ($txtps_conv eq "") {
-	      &popmsg(2,"No converter available for txt->ps conversion.",
-		      $parframe);
-	      return;
-	  }
-	  &popmsg(-1,"Converting txt to ps for printing and sending file to print...",$parframe);
-	  my $txtps_redir_sign=($txtps_redir == 1) ? ">" :"";
-	  system("$txtps_conv $slcdoc $txtps_redir_sign $pstmpfile");
-	  last DOC_FORMAT;
-      };
-#     convert extracted comments from sty files to ps before printing
-      ($dummy[-1] =~ /sty$/) && do {
-	  if ($txtps_conv eq "") {
-	      &popmsg(2,"No converter available for sty(txt)->ps conversion.",
-		      $parframe);
-	      return;
-	  }
-	  &popmsg(-1,"Converting sty(txt) to ps for printing and sending file to print...",$parframe);
-#         try to get doc out of .sty file
-	  &popmsg(-1,'Trying to extract documentation out of .sty file;
-might be cluttered with program comments.',
-		    $parframe);
-	  $slcdoc=&stripsty($slcdoc,substr($slc,7));
-	  my $txtps_redir_sign=($txtps_redir == 1) ? ">" :"";
-	  system("$txtps_conv $slcdoc $txtps_redir_sign $pstmpfile");
-	  last DOC_FORMAT;
-      };
-      &popmsg(2,"$dummy[-1]: cannot print document format",$parframe);
-      return;
-  };
-    system("$print_cmd $pstmpfile");
-}
-
-# test existence and search a documentation which is not in specified place
-sub finddoc {
-    my($slcdoc,$slc,$parframe)=@_;
-    my ($dummy,$status);
-  SLCDOCFIND: foreach ($texdocpath,$distdocpath,$docdocpath) {
-      $slcdoc="$_/$slc";
-      if (-e $slcdoc) {
-#       found where it should be
-	return $slcdoc;
-      } else {
-#       see if the documentation file is in the local doc tree...
-	my @srchslcdoc=($slcdoc);
-	if ($localdocpath) {
-	    push @srchslcdoc,"$localdocpath/$slc";
-	    return $srchslcdoc[-1] if (-e $srchslcdoc[-1]);
-	}
-#       ... or the user's doc tree...
-	if ($homedocpath) {
-	    push @srchslcdoc,"$homedocpath/$slc";
-	    return $srchslcdoc[-1] if (-e $srchslcdoc[-1]);
-	}
-#       ... otherwise proceed with searching
-	$status=-1;
-#       see if the documentation file is compressed
-      CMPREND: foreach my $cmprtype ("gz","bz2","zip") {
-	    foreach (@srchslcdoc) {
-		$dummy="$_.$cmprtype";
-		if (-e $dummy) { # yes, it is compressed
-        	    $tmpfno=&randname;
-		    my $rawname=basename($slc,"");
-		    $slcdoc="${TempDir}/texdoc_$tmpfno$rawname";
-		    push @tmpfiles,$slcdoc;
-		    my ($dcmp,$dcmp_opt);
-		  COMPRESS: { # determine compression type
-		      ($cmprtype eq "gz") && do {
-			  $dcmp="gzip";
-			  $dcmp_opt="-cd";
-			  last COMPRESS;
-		      };
-		      ($cmprtype eq "bz2") && do {
-			  $dcmp="bzip2";
-			  $dcmp_opt="-cd";
-			  last COMPRESS;
-		      };
-		      ($cmprtype eq "zip") && do {
-			  $dcmp="zip";
-			  $dcmp_opt="-p";
-			  last COMPRESS;
-		      };
-		  };
-#                   try to decompress
-		    $status=system("$dcmp $dcmp_opt $dummy > $slcdoc");
-		    if ($status != 0) { # failure
-			&popmsg(2,
-				"$dcmp: Couldn't decompress file, cancelling.",
-				$parframe);
-			$slcdoc="";
-			return $slcdoc;
-		    }
-#		    last CMPREND; does not work, what we need is:
-                    return $slcdoc;
-		}
-	    }
-	}
-      }
-    }
-    if ($status != 0) {
-      $parframe->configure(-cursor=>'watch');
-#     try to find it elsewhere with kpsewhich
-      my $rawname=basename($slc,"");
-      $slcdoc=($slcdoc =~ /\.sty$/) ?
-	`kpsewhich $rawname` :
-	  `kpsewhich --format=${qq}TeX system documentation${qq} $rawname`;
-      if ($slcdoc eq "") { # nothing found; cancel
-	&popmsg(2,"$rawname not found, cancelling.",$parframe);
-	$slcdoc="";
-      }
-      $parframe->configure(-cursor=>$defcursor);
-    }
-    return $slcdoc;
-}
-
-# determine existence and show paths of files (Button-3)
-sub showpath {
-    my ($docselect,$tpbframe)=@_;
-    my $found=0;
-    if ($docselect =~ /\.sty$/) {
-    STYPATH: foreach my $fullpath ("$texmfmain/tex/$docselect",
-				   "$texmfdist/tex/$docselect",
-				   "$texmflocal/tex/$docselect",
-				   "$texmfhome/tex/$docselect") {
-	if (-e $fullpath) {
-	  &popmsg(0,"Selected file:\n$fullpath",$tpbframe);
-	  $found=1;
-	  last STYPATH;
-	}
-      }
-      if (!$found) {
-	&popmsg(2,"Selected file:\n$docselect\ndoes not exist.",$tpbframe) }
-    } else {
-    DOCPATH: foreach my $fullpath ("$texdocpath/$docselect",
-				   "$distdocpath/$docselect",
-				   "$docdocpath/$docselect",
-				   "$localdocpath/$docselect",
-				   "$homedocpath/$docselect") {
-	foreach ('','.gz','.bz2','.zip') {
-	  my $fullpathext="$fullpath$_";
-	  if (-e $fullpathext) {
-	    &popmsg(0,"Selected file:\n$fullpathext",$tpbframe);
-	    $found=1;
-	    last DOCPATH;
-	  }
-	}
-      }
-      if (!$found) {
-	&popmsg(2,"Selected file:\n$docselect\ndoes not exist (neither in normal form nor compressed).",$tpbframe) }
-    }
-}
-
-# make or destroy search entry widget
-sub mksrch {
-    if ($srchflag == 1) {
-	destroy $srchentry;
-	$srchflag=0;
-    } else {
-#       get the search string
-	$srchentry=$cmdframe->Entry(-cursor=>'xterm',
-				    -font=>$deffont,
-				    -width=>20,
-				    -takefocus=>1)->pack(-side=>'left');
-	$srchentry->focus();
-	$srchentry->bind('<Return>'=>[\&srchstr, $srchentry]);
-	$srchflag=1;
-#       key binding
-	$srchentry->bind('<Control-c>'=>sub{destroy $srchentry; $srchflag=0;});
-    }
-}
-
-# search a string in @packname, @topic and @keywords
-sub srchstr {
-    my ($i,$j,$string);
-    my (@results,@reslist);
-    $main->configure(-cursor=>'watch');
-    $string=$srchentry->get();
-# search
-    if ($string) {
-	for ($i=0; $i<$ncat; ++$i) {
-	    for ($j=0; $j<$maxind[$i]+1; ++$j) {
-	      SRCH: {
-		  ($topic[$i][$j] =~ /$string/i) && do {
-		      push @results,($i,$j);
-		      last SRCH;
-		  };
-		  (defined $keywords[$i][$j]) && do {
-		      if ($keywords[$i][$j] =~ /$string/i) {
-			  push @results,($i,$j);
-			  last SRCH;
-		      }
-		  };
-		  ($packname[$i][$j] =~ /$string/i) && do {
-		      push @results,($i,$j);
-		      last SRCH;
-		  };
-	      };
-	    }
-	}
-    } else { # return full database
-	$string='all database entries';
-	for ($i=0; $i<$ncat; ++$i) {
-	    for ($j=0; $j<$maxind[$i]+1; ++$j) { push @results,($i,$j); }
-	}
-    }
-# destroy entry widget and show results
-    destroy $srchentry;
-    $srchflag=0;
-    if (scalar @results == 0) {
-	&popmsg(0,"Search for $string: no matches found.",$cmdframe);
-    } else {
-#       cancel multiple entries
-	my ($omit,$pack1,$pack2);
-	@reslist=($results[0],$results[1]);
-	for ($i=0; $i<$#results; $i+=2) {
-	    $omit=0;
-	    $pack1=$packname[$results[$i]][$results[$i+1]];
-	    for ($j=0; $j<$#reslist; $j+=2) {
-		$pack2=$packname[$reslist[$j]][$reslist[$j+1]];
-		if ($pack1 eq $pack2) { $omit=1; last; }
-	    }
-	    if ($omit == 0) { push @reslist,($results[$i],$results[$i+1]); }
-	}
-	unshift @reslist,$string;
-	&tpslct(-1,@reslist);
-    }
-    $main->configure(-cursor=>$defcursor);
-}
-
-# extract documentation of .sty files; a flag in the @keywords array shows
-# where the doc is located:
-# -0-: no specific place; -1-: at end, behind \endinput; -2-: at beginning,
-# terminated by %%%%%%; -3-: at beginning, terminated with blank line
-sub stripsty {
-    my ($slcdoc,$slc)=@_;
-    my @stydoc;
-    $tmpfno=&randname;
-    my $tmpslcdoc="${TempDir}/texdoc_$tmpfno.txt";
-    push @tmpfiles,$tmpslcdoc;
-    open (STY,"$slcdoc");
-  LOC: {
-      ($stydoc{$slc} == 0) && do { # no specific place, suck in everything :-(
-	  while ($line = <STY>) { push @stydoc,$line if ($line =~ /^%/); }
-	  last LOC;
-      };
-      ($stydoc{$slc} == 1) && do { # at end, behind \endinput
-	  while ($line = <STY>) {
-	      last if ($line =~ /^\s*\\endinput/ && !($line =~ /^%/));
-	  }
-	  while ($line = <STY>) { push @stydoc,$line; }
-	  last LOC;
-      };
-      ($stydoc{$slc} == 2) && do { # up to a certain %%%%%%%, hopefully the 1st
-	  for (my $i=0; $i<9; ++$i) { $stydoc[$i]=<STY>; } # after the 8th line
-	  while ($line = <STY>) {
-	      last if ($line =~ /^%{4,}/);
-	      push @stydoc,$line;
-	  }
-	  last LOC;
-      };
-      ($stydoc{$slc} == 3) && do { # up to 1st blank/apparently empty line
-	  while ($line = <STY>) {
-	      last if ($line =~ /^\s*$/);
-	      push @stydoc,$line;
-	  }
-	  last LOC;
-      };
-  };
-    close(STY);
-    open(TMPSTY,">$tmpslcdoc");
-    foreach (@stydoc) { print TMPSTY $_; }
-    close(TMPSTY);
-    return $tmpslcdoc;
-}
-
-# pop up a note or an error or warning message toplevel window
-sub popmsg {
-    my($level,$msg,$parframe)=@_;
-    my $degree;
-  LEVEL: {
-      ($level == -1) && do { $degree="Info"; last LEVEL; };
-      ($level == 0) && do { $degree="Note"; last LEVEL; };
-      ($level == 1) && do {
-	return if ($quiet == 1);
-	$degree="Warning";
-	last LEVEL
-      };
-      ($level == 2) && do { $degree="Error"; last LEVEL; };
-  };
-    my $msgwin=$parframe->Toplevel(-title=>$degree);
-    my $lbl=$msgwin->Label(-text=>uc($degree),
-			   -font=>$deffont)->pack(-side=>'top', -fill=>'x');
-#   get size of message text
-    my @dummy=split("\n",$msg);
-    my $nline=scalar @dummy;
-    my $msgwidth=0;
-    my $lline;
-    foreach (@dummy) {
-	$lline=length $_;
-	if ($lline > $msgwidth) { $msgwidth=$lline; }
-    }
-    my $message=$msgwin->Text(-relief=>'flat',
-			      -font=>$deffont,
-			      -height=>$nline,
-			      -width=>$msgwidth)->pack(-side=>'top');
-    $message->insert('end',$msg);
-    $message->configure(-state=>'disabled');
-    if ($level < 0) { # transient message window
-	$msgwin->after(3000,sub{destroy $msgwin});
-    } else { # persistent message window
-	$msgwin->Button(-text=>'Close',
-			-font=>$deffont,%butcol,
-			-command=>sub{destroy $msgwin})->pack(-side=>'bottom',
-							      -fill=>'x');
-	$msgwin->bind('<Control-c>'=>sub{destroy $msgwin});
-    }
-}
-
-# show/change settings (don't show this to an expert :-/ )
-sub settings {
-    my ($homedocpath_tmp,$quiet_tmp,$autoview_tmp,$xfmt_viewer_tmp,
-	$dvi_viewer_tmp,$dvips_conv_tmp,
-	$ps_viewer_tmp,$pdf_viewer_tmp,$pdfps_conv_tmp,
-	$html_viewer_tmp,$htmlps_conv_tmp,$htmlps_redir_tmp,
-	$txt_viewer_tmp,$txtps_conv_tmp,$txtps_redir_tmp,$print_cmd_tmp)=
-	    ($homedocpath,$quiet,$autoview,$xfmt_viewer,
-	     $dvi_viewer,$dvips_conv,$ps_viewer,
-	     $pdf_viewer,$pdfps_conv,$html_viewer,
-	     $htmlps_conv,$htmlps_redir,$txt_viewer,
-	     $txtps_conv,$txtps_redir,$print_cmd);
-    my @tdcolors_tmp=@tdcolors;
-#   see if toplevel window is already there
-    if (Exists($tlwins{"setmenu"}{'addr'})) {
-	$tlwins{"setmenu"}{'addr'}->deiconify();
-	$tlwins{"setmenu"}{'addr'}->raise();
-	return;
-    }
-    my $setmenu=$main->Toplevel(-title=>'Settings');
-    $setmenu->resizable(0,0);
-    $tlwins{"setmenu"}{'addr'}=$setmenu;
-# documentation path
-    my $datlabel;
-    $datlabel="Database file(s) used: teTeX";
-    $datlabel.=", local database" if (-e $locdatabase);
-    $datlabel.=", user database" if (-e $homedatabase);
-    my $docframe=$setmenu->Frame(-relief=>'groove',
-				 -borderwidth=>2)->pack(-side=>'top',
-							-fill=>'x',
-							-expand=>1);
-    my $docframestring="\nDistribution documentation root path(s):\n$texdocpath";
-    $docframestring.=", $distdocpath" if (-e $distdocpath);
-    $docframestring.=", $docdocpath" if (length $docdocpath);
-    if ($localdocpath && $localdocpath ne $texdocpath) {
-	$docframestring.="\nLocal documentation root path: $localdocpath\n";
-    }
-    $docframe->Label(-text=>"$docframestring",
-		     -font=>$deffont)->pack(-side=>'top',
-					    -anchor=>'w',
-					    -fill=>'x',
-					    -expand=>1);
-    if (defined $texmfhome && -d $texmfhome) {
-      $homedocpath_tmp=basename($homedocpath_tmp,"");
-      my $usrdocframe=$docframe->Frame(-relief=>'flat')->pack(-side=>'top',
-							      -fill=>'x');
-      my $usrdoclabel=$usrdocframe->Label(-text=>"User's documentation root path: $texmfhome/",
-					  -font=>$deffont)->pack(-side=>'left');
-      my $usrdocentry=$usrdocframe->Entry(-textvariable=>\$homedocpath_tmp,
-					  -font=>$deffont)->pack(-side=>'left');
-    }
-    $docframe->Label(-text=>"$datlabel.",
-		     -font=>$deffont)->pack(-side=>'top',
-					    -anchor=>'w',
-					    -ipady=>2,
-					    -fill=>'x',
-					    -expand=>1);
-# General viewer behaviour
-    my $genvframe=$setmenu->Frame(-label=>'General viewer behaviour',
-				  -relief=>'groove',
-				  -borderwidth=>2)->pack(-side=>'top',
-							 -fill=>'x',
-							 -ipady=>6,
-							 -expand=>1);
-    my $genvframe1=$genvframe->Frame()->pack(-side=>'left');
-    my $genvsub1=$genvframe1->Frame()->pack(-side=>'top',
-					    -anchor=>'w',
-					    -ipady=>3);
-    my $genvecbut=$genvsub1->
-	Checkbutton(-variable=>\$quiet_tmp)->pack(-side=>'left',
-						  -anchor=>'sw');
-    my $genvelabel=$genvsub1->Label(-text=>'Suppress error messages',
-				    -font=>$deffont)->pack(-side=>'left',
-							   -anchor=>'sw');
-    my $genvsub2=$genvframe1->Frame()->pack(-side=>'top',
-					    -anchor=>'w');
-    my $genvscbut=$genvsub2->
-	Checkbutton(-variable=>\$autoview_tmp)->pack(-side=>'left',
-						     -anchor=>'sw');
-    my $genvslabel=$genvsub2->Label(-text=>'Autostart viewer for one-item listboxes',
-				    -font=>$deffont)->pack(-side=>'left',
-							   -anchor=>'sw');
-    my $genvsub3=$genvframe1->Frame()->pack(-side=>'top',
-					    -anchor=>'w');
-    my $genvxcbut=$genvsub3->
-	Checkbutton(-variable=>\$xfmt_viewer_tmp)->pack(-side=>'left',
-							-anchor=>'sw');
-    my $genvxlabel=$genvsub3->Label(-text=>'Use text viewer for unknown file format',
-				    -font=>$deffont)->pack(-side=>'left',
-							   -anchor=>'sw');
-#   colours of GUI
-    my @tdcolors_d=@tdcolors_tmp;
-    $tlwins{'setmenu'}{'buttons'}[0]=
-	$genvframe->Button(-text=>'Change viewer colours',
-			   -command=>sub {
-			       @tdcolors_tmp=&popcolor($setmenu,@tdcolors_tmp);
-			       @tdcolors_d=@tdcolors_tmp;
-			   },
-			   -font=>$deffont,%butcol)->pack(-side=>'right');
-# DVI
-    my $dviframe=$setmenu->Frame(-label=>'DVI',
-				 -relief=>'groove',
-				 -borderwidth=>2)->pack(-side=>'top',
-							-fill=>'x',
-							-ipady=>6,
-							-expand=>1);
-    my $dvisub1=$dviframe->Frame()->pack(-side=>'top',
-					 -anchor=>'w');
-    my $dvisub2=$dviframe->Frame()->pack(-side=>'top',
-					 -anchor=>'w',
-					 -ipady=>6);
-    my $dvivlabel=$dvisub1->Label(-text=>'Viewer command',
-				  -anchor=>'w',
-				  -font=>$deffont)->pack(-side=>'left');
-    my $dviventry=$dvisub1->Entry(-textvariable=>\$dvi_viewer_tmp,
-				  -font=>$deffont)->pack(-side=>'left');
-    my $dviclabel=$dvisub2->Label(-text=>'DVI->PS converter command',
-				  -anchor=>'w',
-				  -font=>$deffont)->pack(-side=>'left',
-							 -anchor=>'sw');
-    my $dvilbwidth=length 'DVI->PS converter command';
-    $dvivlabel->configure(-width=>1.1*$dvilbwidth);
-    $dviclabel->configure(-width=>1.1*$dvilbwidth);
-    my $dvicentry=$dvisub2->Entry(-textvariable=>\$dvips_conv_tmp,
-				  -font=>$deffont)->pack(-side=>'left',
-							 -anchor=>'sw');
-# PostScript
-    my $psframe=$setmenu->Frame(-label=>'PostScript',
-				-relief=>'groove',
-				-borderwidth=>2)->pack(-side=>'top',
-						       -fill=>'x',
-						       -ipady=>10,
-						       -expand=>1);
-    my $psvlabel=$psframe->Label(-text=>'Viewer command',
-				 -font=>$deffont)->pack(-side=>'left',
-							-anchor=>'w');
-    my $psventry=$psframe->Entry(-textvariable=>\$ps_viewer_tmp,
-				 -font=>$deffont)->pack(-side=>'left');
-# PDF
-    my $pdfframe=$setmenu->Frame(-label=>'PDF',
-				 -relief=>'groove',
-				 -borderwidth=>2)->pack(-side=>'top',
-							-fill=>'x',
-							-ipady=>6,
-							-expand=>1);
-    my $pdfsub1=$pdfframe->Frame()->pack(-side=>'top',
-					 -anchor=>'w');
-    my $pdfsub2=$pdfframe->Frame()->pack(-side=>'top',
-					 -anchor=>'w',
-					 -ipady=>6);
-    my $pdfvlabel=$pdfsub1->Label(-text=>'Viewer command',
-				  -font=>$deffont)->pack(-side=>'left',
-							 -anchor=>'w');
-    my $pdfventry=$pdfsub1->Entry(-textvariable=>\$pdf_viewer_tmp,
-				  -font=>$deffont)->pack(-side=>'left');
-    my $pdfclabel=$pdfsub2->Label(-text=>'PDF->PS converter command',
-				  -font=>$deffont)->pack(-side=>'left',
-							 -anchor=>'sw');
-    my $pdfcentry=$pdfsub2->Entry(-textvariable=>\$pdfps_conv_tmp,
-				  -font=>$deffont)->pack(-side=>'left',
-							 -anchor=>'sw');
-# HTML
-    my $htmlframe=$setmenu->Frame(-label=>'HTML',
-				  -relief=>'groove',
-				  -borderwidth=>2)->pack(-side=>'top',
-							 -fill=>'x',
-							 -ipady=>6,
-							 -expand=>1);
-    my $htmlsub1=$htmlframe->Frame()->pack(-side=>'top',
-					   -anchor=>'w');
-    my $htmlsub2=$htmlframe->Frame()->pack(-side=>'top',
-					   -anchor=>'w',
-					   -ipady=>6);
-    my $htmlvlabel=$htmlsub1->Label(-text=>'Viewer command',
-				    -font=>$deffont)->pack(-side=>'left',
-							   -anchor=>'w');
-    my $htmlventry=$htmlsub1->Entry(-textvariable=>\$html_viewer_tmp,
-				    -font=>$deffont)->pack(-side=>'left');
-    my $htmlclabel=$htmlsub2->Label(-text=>'HTML->PS converter command',
-				    -font=>$deffont)->pack(-side=>'left',
-							   -anchor=>'sw');
-    my $htmlcentry=$htmlsub2->Entry(-textvariable=>\$htmlps_conv_tmp,
-				    -font=>$deffont)->pack(-side=>'left',
-							   -anchor=>'sw');
-    my $htmlrlabel=$htmlsub2->Label(-text=>'Output redirect needed',
-				    -font=>$deffont)->pack(-side=>'left',
-							   -anchor=>'sw');
-    my $htmlrcbut=$htmlsub2->
-	Checkbutton(-variable=>\$htmlps_redir_tmp)->pack(-side=>'left',
-							 -anchor=>'sw');
-# plain text
-    my $txtframe=$setmenu->Frame(-label=>'Plain text',
-				 -relief=>'groove',
-				 -borderwidth=>2)->pack(-side=>'top',
-							-fill=>'x',
-							-ipady=>6,
-							-expand=>1);
-    my $txtsub1=$txtframe->Frame()->pack(-side=>'top',
-					 -anchor=>'w');
-    my $txtsub2=$txtframe->Frame()->pack(-side=>'top',
-					 -anchor=>'w',
-					 -ipady=>6);
-    my $txtvlabel=$txtsub1->Label(-text=>'Viewer command',
-				  -font=>$deffont)->pack(-side=>'left',
-							 -anchor=>'w');
-    my $txtventry=$txtsub1->Entry(-textvariable=>\$txt_viewer_tmp,
-				  -font=>$deffont)->pack(-side=>'left');
-    my $txt_view_flag;
-    if ($txt_viewer_tmp eq "TDK_OWN") {
-	$txt_view_flag=1;
-	$txtventry->configure(-state=>'disabled');
-    } else {
-	$txt_view_flag=0;
-	$txtventry->configure(-state=>'normal');
-    }
-    my $txtvilabel=$txtsub1->Label(-text=>"\tUse texdoctk\'s own viewer",
-				   -font=>$deffont)->pack(-side=>'left',
-							  -anchor=>'sw');
-    my $txtvcbut=$txtsub1->
-	Checkbutton(-variable=>\$txt_view_flag,
-		    -command=>sub {
-			if ($txt_view_flag == 1) {
-			    $txt_viewer_tmp="TDK_OWN";
-			    $txtventry->configure(-state=>'disabled');
-			} else {
-			    $txt_viewer_tmp=$txt_viewer;
-			    $txtventry->configure(-state=>'normal');
-			    $txtventry->focus();
-			}
-		    })->pack(-side=>'left',
-			     -anchor=>'sw');
-    my $txtclabel=$txtsub2->Label(-text=>'Text->PS converter command',
-				  -font=>$deffont)->pack(-side=>'left',
-							 -anchor=>'sw');
-    my $txtcentry=$txtsub2->Entry(-textvariable=>\$txtps_conv_tmp,
-				  -font=>$deffont)->pack(-side=>'left',
-							 -anchor=>'sw');
-    my $txtrlabel=$txtsub2->Label(-text=>'Output redirect needed',
-				  -font=>$deffont)->pack(-side=>'left',
-							 -anchor=>'sw');
-    my $txtrcbut=$txtsub2->
-	Checkbutton(-variable=>\$txtps_redir_tmp)->pack(-side=>'left',
-							-anchor=>'sw');
-# printer
-    my $prtframe=$setmenu->Frame(-label=>'Printer',
-				 -relief=>'groove',
-				 -borderwidth=>2)->pack(-side=>'top',
-							-fill=>'x',
-							-ipady=>10,
-							-expand=>1);
-    my $prtclabel=$prtframe->Label(-text=>'Command',
-				   -font=>$deffont)->pack(-side=>'left',
-							  -anchor=>'w');
-    my $prtcentry=$prtframe->Entry(-textvariable=>\$print_cmd_tmp,
-				   -font=>$deffont)->pack(-side=>'left');
-# buttons and key bindings
-    my $setbfr=$setmenu->Frame()->pack(-side=>'bottom');
-    $tlwins{'setmenu'}{'buttons'}[1]=
-	$setbfr->Button(-text=>'OK',
-			-font=>$deffont,%butcol,
-			-command=>sub{
-			    $homedocpath="$texmfhome/$homedocpath_tmp";
-			    ($quiet,$autoview,$xfmt_viewer,
-			     $dvi_viewer,$dvips_conv,
-			     $ps_viewer,$pdf_viewer,
-			     $pdfps_conv,$html_viewer,
-			     $htmlps_conv,$htmlps_redir,
-			     $txt_viewer,$txtps_conv,$txtps_redir,$print_cmd)=
-				 ($quiet_tmp,$autoview_tmp,$xfmt_viewer_tmp,
-				  $dvi_viewer_tmp,$dvips_conv_tmp,
-				  $ps_viewer_tmp,
-				  $pdf_viewer_tmp,$pdfps_conv_tmp,
-				  $html_viewer_tmp,
-				  $htmlps_conv_tmp,$htmlps_redir_tmp,
-				  $txt_viewer_tmp,$txtps_conv_tmp,
-				  $txtps_redir_tmp,$print_cmd_tmp);
-			    @tdcolors=@tdcolors_tmp;
-			    %butcol=('-background'=>$tdcolors[0],
-				     '-foreground'=>$tdcolors[1],
-				     '-activebackground'=>$tdcolors[2],
-				     '-activeforeground'=>$tdcolors[3]);
-			    foreach my $tlkey (keys %tlwins) {
-				foreach (@{$tlwins{$tlkey}{'buttons'}}) {
-				    $_->configure(%butcol);
-				}
-			    }
-			    if ($txt_viewer eq "" && 
-				defined $ENV{PAGER}) {
-				$txt_viewer=$ENV{PAGER};
-			    }
-			    destroy $setmenu},
-			-width=>6)->pack(-side=>'left',
-					 -padx=>10,
-					 -pady=>10);
-    $tlwins{'setmenu'}{'buttons'}[2]=
-	$setbfr->Button(-text=>'Save',
-			-font=>$deffont,%butcol,
-			-command=>sub{
-			    $setmenu->configure(-cursor=>'watch');
-			    &popmsg(-1,"Writing settings to $myrc",$setmenu);
-			    my $tdcolors_tmp=join(' ',@tdcolors_tmp);
-			    &writerc($homedocpath_tmp,
-				     $quiet_tmp,$autoview_tmp,$xfmt_viewer_tmp,
-				     $tdcolors_tmp,
-				     $dvi_viewer_tmp,$dvips_conv_tmp,
-				     $ps_viewer_tmp,
-				     $pdf_viewer_tmp,$pdfps_conv_tmp,
-				     $html_viewer_tmp,
-				     $htmlps_conv_tmp,$htmlps_redir_tmp,
-				     $txt_viewer_tmp,$txtps_conv_tmp,
-				     $txtps_redir_tmp,$print_cmd_tmp,$setmenu);
-			    $setmenu->configure(-cursor=>$defcursor);
-			})->pack(-side=>'left',
-				 -padx=>10);
-    $tlwins{'setmenu'}{'buttons'}[3]=
-	$setbfr->Button(-text=>'Cancel',
-			-font=>$deffont,%butcol,
-			-command=>sub{destroy $setmenu;
-				      undef $tlwins{"setmenu"};
-				  })->pack(-side=>'left',
-					   -padx=>10);
-    $setmenu->bind('<Control-c>'=>sub{destroy $setmenu;
-				      undef $tlwins{"setmenu"};});
-}
-
-# dialog toplevel for color settings
-sub popcolor {
-    my ($parframe,@entryvar)=@_;
-#   see if toplevel window is already there
-    if (Exists($tlwins{'chngcol'}{'addr'})) {
-	$tlwins{'chngcol'}{'addr'}->deiconify();
-	$tlwins{'chngcol'}{'addr'}->raise();
-	return;
-    }
-    my $dlgwin=$parframe->Toplevel(-title=>'Change colours');
-    $dlgwin->resizable(0,0);
-    $tlwins{'chngcol'}{'addr'}=$dlgwin;
-#   entry widgets for default/active back/foreground
-    $dlgwin->Label(-text=>'Enter colours as names or RGB #xxxxxx values',
-		   -font=>$deffont)->pack(-side=>'top');
-    my $dlgdef=$dlgwin->Frame()->pack(-side=>'top');
-    my $dlgact=$dlgwin->Frame()->pack(-side=>'top');
-    my $dlgdef1=$dlgdef->Frame()->pack(-side=>'left');
-    my $dlgtfr0=$dlgdef1->Frame()->pack(-side=>'top');
-    my $dlgtfr1=$dlgdef1->Frame()->pack(-side=>'top');
-    my $dlgact1=$dlgact->Frame()->pack(-side=>'left');
-    my $dlgtfr2=$dlgact1->Frame()->pack(-side=>'top');
-    my $dlgtfr3=$dlgact1->Frame()->pack(-side=>'top');
-    $dlgtfr0->Label(-text=>"Default background",
-		    -anchor=>'w',
-		    -width=>18,
-		    -font=>$deffont)->pack(-side=>'left');
-    $dlgtfr0->Entry(-textvariable=>\$entryvar[0],
-		    -font=>$deffont)->pack(-side=>'left');
-    $dlgtfr1->Label(-text=>"Default foreground",
-		    -anchor=>'w',
-		    -width=>18,
-		    -font=>$deffont)->pack(-side=>'left');
-    $dlgtfr1->Entry(-textvariable=>\$entryvar[1],
-		    -font=>$deffont)->pack(-side=>'left');
-    my $deflabel=$dlgdef->Label(-text=>'Default',
-				-relief=>'ridge',
-				-width=>10,
-				-height=>2)->pack(-side=>'right',
-						  -padx=>7);
-    $dlgtfr2->Label(-text=>"Active background",
-		    -anchor=>'w',
-		    -width=>18,
-		    -font=>$deffont)->pack(-side=>'left');
-    $dlgtfr2->Entry(-textvariable=>\$entryvar[2],
-		    -font=>$deffont)->pack(-side=>'left');
-    $dlgtfr3->Label(-text=>"Active foreground",
-		    -anchor=>'w',
-		    -width=>18,
-		    -font=>$deffont)->pack(-side=>'left');
-    $dlgtfr3->Entry(-textvariable=>\$entryvar[3],
-		    -font=>$deffont)->pack(-side=>'left');
-    my $actlabel=$dlgact->Label(-text=>'Active',
-				-background=>$entryvar[2],
-				-foreground=>$entryvar[3],
-				-relief=>'ridge',
-				-width=>10,
-				-height=>2)->pack(-side=>'right',
-						  -padx=>7);
-#   buttons
-    my $setbfr=$dlgwin->Frame()->pack(-side=>'bottom');
-    my $chngflag=0;
-    $tlwins{'chngcol'}{'buttons'}[0]=
-	$setbfr->Button(-text=>'OK',
-			-font=>$deffont,%butcol,
-			-command=>sub {
-			    foreach (@entryvar) { # RGB form with leading #
-				$_="#$_" if (/^[A-Fa-f0-9]{6}$/);
-			    }
-			    $chngflag=1 if (&colcheck($dlgwin,@entryvar));
-			},
-			-width=>6)->pack(-side=>'left',
-					 -padx=>5,
-					 -pady=>10);
-    $tlwins{'chngcol'}{'buttons'}[1]=
-	$setbfr->Button(-text=>'Preview',
-			-font=>$deffont,%butcol,
-			-command=>sub {
-			    foreach (@entryvar) { # RGB form with leading #
-				$_="#$_" if (/^[A-Fa-f0-9]{6}$/);
-			    }
-			    if (&colcheck($dlgwin,@entryvar)) {
-				$deflabel->
-				    configure(-background=>$entryvar[0],
-					      -foreground=>$entryvar[1]);
-				$actlabel->
-				    configure(-background=>$entryvar[2],
-					      -foreground=>$entryvar[3]);
-			    }
-			},
-			-width=>6)->pack(-side=>'left',
-					 -padx=>5,
-					 -pady=>10);
-    $tlwins{'chngcol'}{'buttons'}[2]=
-	$setbfr->Button(-text=>'Cancel',
-			-font=>$deffont,%butcol,
-			-command=>sub{destroy $dlgwin;
-				      undef $tlwins{'chngcol'};
-				  })->pack(-side=>'right',
-					   -padx=>5,
-					   -pady=>10);
-    $dlgwin->bind('<Control-c>'=>sub{destroy $dlgwin;
-				     undef $tlwins{'chngcol'}; });
-    $dlgwin->waitVariable(\$chngflag);
-    destroy $dlgwin;
-    undef $tlwins{'chngcol'};
-    return @entryvar;
-}
-
-# check colours set in popcolor; relies on the existence of X11's showrgb
-sub colcheck {
-    my ($dlgwin,@entryvar)=@_;
-    my $ecnt=0;
-    foreach (@entryvar) { # all colours defined?
-	last unless ($_);
-	++$ecnt;
-    }
-    &popmsg(2,'Some colours undefined.',$dlgwin) if ($ecnt != 4);
-    my $defcol=0;
-    if (`which showrgb`) { # test for proper name
-	my @rgb=`showrgb`;
-	my @norgb;
-	foreach my $colour (@entryvar) {
-	    if ($colour =~ /^#[A-Fa-f0-9]{6}$/ || grep /\b$colour\b/i,@rgb) {
-		++$defcol;
-	    } else {
-		push @norgb,$colour;
-	    }
-	}
-	if ($defcol != 4) {
-	    my $norgb=join("\n",@norgb);
-	    &popmsg(2,"Some colours invalid:\n$norgb",$dlgwin);
-	}
-    } else { $defcol=4; }
-    return ($ecnt == 4 && $defcol == 4) ? 1 : 0;
-}
-
-# write user's ~/.texdocrc
-sub writerc {
-    use File::Copy qw/cp mv/;
-    my ($homedocpath_tmp,$quiet_tmp,$autoview_tmp,$xfmt_viewer_tmp,
-	$tdcolors_tmp,
-	$dvi_viewer_tmp,$dvips_conv_tmp,
-	$ps_viewer_tmp,
-	$pdf_viewer_tmp,$pdfps_conv_tmp,
-	$html_viewer_tmp,
-	$htmlps_conv_tmp,$htmlps_redir_tmp,
-	$txt_viewer_tmp,$txtps_conv_tmp,
-	$txtps_redir_tmp,$print_cmd_tmp,$parframe)=@_;
-    my $err=0;
-    mv $myrc,"$myrc.save" if (-e $myrc);
-    open(MYRC,">$myrc");
-    print MYRC "# user's .texdocrc, generated by program\n
-# root of user's doc directory (from \$HOMETEXMF)
-# can be left empty if \$TEXMFHOME is undefined
-HOMEDOCPATH=$homedocpath_tmp
-# general viewer behaviour (y or yes to make active)
-QUIET=$quiet_tmp
-AUTOVIEW=$autoview_tmp
-XFMT_VIEWER=$xfmt_viewer_tmp
-# button colours: default and active back-/foreground
-# names and RGB values are both allowed; use the form #xxxxxx for RGB
-TDCOLORS=$tdcolors_tmp
-# the following variables contain whole commands, i.e. options can be given
-# DVI settings
-DVI_VIEWER=$dvi_viewer_tmp
-DVIPS_CONV=$dvips_conv_tmp
-# PostScript handling
-PS_VIEWER=$ps_viewer_tmp
-# PDF handling
-PDF_VIEWER=$pdf_viewer_tmp
-PDFPS_CONV=$pdfps_conv_tmp
-# HTML handling
-HTML_VIEWER=$html_viewer_tmp
-HTMLPS_CONV=$htmlps_conv_tmp
-# HTMLPS_REDIR must be on, if the html->ps converter normally writes its output
-# to stdout instead of a file (e.g. as html2ps) (y or yes to make active)
-HTMLPS_REDIR=$htmlps_redir_tmp
-# Plain text handling
-# TDK_OWN is texdoctk's own text file viewer
-TXT_VIEWER=$txt_viewer_tmp
-TXTPS_CONV=$txtps_conv_tmp
-# TXTPS_REDIR must be on, if the txt->ps converter normally writes its output
-# to stdout instead of a file (e.g. as a2ps) (y or yes to make active)
-TXTPS_REDIR=$txtps_redir_tmp
-# printer
-PRINT_CMD=$print_cmd_tmp
-\n# end of config\n";
-    close(MYRC);
-}
-
-# help window (toplevel)
-sub helptext {
-#   see if toplevel window is already there
-    if (Exists($tlwins{"helptext"}{'addr'})) {
-	$tlwins{"helptext"}{'addr'}->deiconify();
-	$tlwins{"helptext"}{'addr'}->raise();
-	return;
-    }
-    my $help=$main->Toplevel(-title=>'Help/About');
-    $help->resizable(0,1);
-    $tlwins{'helptext'}{'addr'}=$help;
-    $help->Label(-text=>"texdoctk
-TeX documentation browser
- v.0.6.0a (Nov 5, 2004)",
-		 -font=>$deffont)->pack(-side=>'top',
-					-ipady=>10,
-					-anchor=>'s');
-    my $helpbody=$help->Scrolled("Text",
-				 -relief=>'flat',
-				 -font=>$deffont,
-				 -height=>20,
-				 -width=>60,
-				 -scrollbars=>"e")->pack(-side=>'top',
-							 -fill=>'y',
-							 -expand=>1);
-    my $pos=tell DATA;
-    while (<DATA>) {
-	$_ =~ s/\$sysrc/$sysrc/;
-	last if (/^#/);
-	$helpbody->insert('end',$_);
-    }
-    seek(DATA,$pos,0);
-    $helpbody->configure(-state=>'disabled');
-    $tlwins{'helptext'}{'buttons'}[0]=
-	$help->Button(-text=>'Close',
-		      -font=>$deffont,%butcol,
-		      -command=>sub{destroy $help;
-				    undef $tlwins{"helptext"};
-				})->pack(-side=>'bottom',
-					 -fill=>'x');
-    $help->bind('<Control-c>'=>sub{destroy $help; undef $tlwins{"helptext"};});
-}
-
-# read config file; personal settings override the default settings
-sub readrc {
-    my($rcfile,$icall)=@_;
-    my ($var,$val);
-    my $pathflag=0;
-    my $pathflagl=0;
-    my $pathflagh=0;
-    my $tdcolors='';
-#   for backward compatibility of converter/printer options
-    my ($dvips_opts,$pdfps_opts,$print_opts);
-#   read defaults resp. local/personal settings
-  CALL: {
-      ($icall == 1) && do {
-	open (RC,"$rcfile") ||
-	  &fatalmsg("Couldn't open system-wide default config file ${TeXDocRcDefaults}.\n");
-	last CALL;
-      };
-      ($icall == 2) && do {
-	open (RC,"$rcfile") ||
-	  &fatalmsg("Couldn't open personal config file ~/.texdocrc.\n");
-	last CALL;
-      };
-    };
-    while ($line = <RC>) {
-	next if ($line =~ /^($|#)/);
-	chomp $line;
-	($var,$val)=split("=",$line,2);
-      RCVARS: {
-	  ($var =~ /texdocpath/i) && do { # TEXDOCPATH
-	    if (length $val > 0) {
-	      $pathflag=1;
-	      eval(join("",("\$",lc($var),"=\$val")));
-	    }
-	    last RCVARS;
-	  };
-	  ($var =~ /localdocpath/i) && do { # LOCALDOCPATH
-	    if (length $val > 0) {
-	      $pathflagl=1;
-	      eval(join("",("\$",lc($var),"=\$val")));
-	    }
-	    last RCVARS;
-	  };
-	  ($var =~ /homedocpath/i) && do { # HOMEDOCPATH
-	    if ($icall == 2 && length $val > 0) { # set only in ~/.texdocrc
-	      $pathflagh=1;
-	      eval(join("",("\$",lc($var),"=\$val")));
-	    }
-	    last RCVARS;
-	  };
-	  # other variables
-	  eval(join("",("\$",lc($var),"=\$val")));
-	};
-    }
-    close(RC);
-#   find texmf/doc, and possibly other distribution texmf trees
-    if ($rcfile eq $sysrc || $pathflag == 1) {
-	$texmfmain=`kpsewhich --expand-path=${qq}\$TEXMFMAIN${qq}`;
-	chomp $texmfmain;
-	$texdocpath="$texmfmain/$texdocpath";
-	$texmfdist=`kpsewhich --expand-path=${qq}\$TEXMFDIST${qq}`;
-	chomp $texmfdist;
-	$distdocpath=join('/',"$texmfdist",basename($texdocpath,""))
-			  if (length $texmfdist);
-	# TeXLive has this texmf-doc
-	$texmfdoc=join('/',"$texmfmain-doc",basename($texdocpath,""));
-	if (-e $texmfdoc) {
-	  chomp $texmfdoc;
-	  $docdocpath="$texmfdoc/$docdocpath";
-	}
-    }
-#   find texmf-local/doc, if there is one
-    if ($rcfile eq $sysrc || $pathflagl == 1) {
-	$texmflocal=`kpsewhich --expand-path=${qq}\$TEXMFLOCAL${qq}`;
-	chomp $texmflocal;
-	if (length $texmflocal) {
-	  # if LOCALDOCPATH is not explicitly defined, it equals TEXDOCPATH
-	  unless (defined $localdocpath) {
-	    $localdocpath=basename($texdocpath,"");
-	  }
-	  $localdocpath="$texmflocal/$localdocpath";
-	}
-    }
-#   find user's $HOMETEXMF/doc, if there is one
-    if ($icall == 2 || $pathflagh == 1) {
-        $texmfhome=`kpsewhich --expand-path=${qq}\$HOMETEXMF${qq}`;
-	chomp $texmfhome;
-	if (length $texmfhome) {
-	  # if HOMEDOCPATH is not explicitly defined, it equals TEXDOCPATH
-	  unless (defined $homedocpath) {
-	    $homedocpath=basename($texdocpath,"");
-	  }
-	  $homedocpath="$texmfhome/$homedocpath";
-	}
-    }
-#   colours: create array
-    @tdcolors=split(' ',$tdcolors);
-    if (scalar @tdcolors != 4) { # if old texdocrc file is used
-	if (!(-e $myrc) || (-e $myrc && $icall == 2)) {
-	    print "NOTE: Button colours not set in $rcfile; using defaults.\n";
-	    @tdcolors=('#d9d9d9','Black','#ececec','red');
-	}
-    }
-    %butcol=('-background'=>$tdcolors[0],
-	     '-foreground'=>$tdcolors[1],
-	     '-activebackground'=>$tdcolors[2],
-	     '-activeforeground'=>$tdcolors[3]);
-#   viewer: suppress viewer warnings/use $PAGER if no $txt_viewer is defined
-    $quiet=($quiet =~ /y/i || $quiet eq "1") ? 1 : 0;
-    if (!(defined $txt_viewer) && defined $ENV{PAGER}) {
-	$txt_viewer=$ENV{PAGER};
-    }
-#   viewer: autostart viewer if listbox of search results contains only 1 item
-    $autoview=($autoview =~ /y/i || $autoview eq "1") ? 1 : 0;
-#   viewer: use text viewer to open files with unrecognized format
-    $xfmt_viewer=($xfmt_viewer =~ /y/i || $xfmt_viewer eq "1") ? 1 : 0;
-#   converter: output redirection flags for HTML/Text->PS converters
-    $htmlps_redir=($htmlps_redir =~ /(y|1)/i) ? 1 : 0;
-    $txtps_redir=($txtps_redir =~ /(y|1)/i) ? 1 : 0;
-#   for backward compatibility of converter/printer options
-    $dvips_conv.=" $dvips_opts" if ($dvips_opts);
-    $pdfps_conv.=" $pdfps_opts" if ($pdfps_opts);
-    $print_cmd.=" $print_opts" if ($print_opts);
-}
-
-# determine resolution if xwininfo is available
-# slightly modified from a patch contributed by Reinhard Kotucha
-sub x_resolution {
-    my $x_res;
-    if ($IsWin32) {
-      $x_res = &GetScreenWidth;
-    }
-    else {
-      open(XINF,"xwininfo -root|") or return 1200;
-      while (<XINF>) {
-        chop;
-        if (/Width:/) { ($x_res=$_)=/Width:\s+(\d+)/; last; }
-      }
-      close(XINF);
-    }
-    return $x_res;
-}
-
-# generate a random name for temporary files
-sub randname {
-    my $namestr;
-    my @chars=("A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z");
-    my $time=time;
-    my $maxcnt=3+substr($time,-1);
-    for (my $i=0; $i<=$maxcnt; $i++) { $namestr.=$chars[rand(51)] }
-    my @tmp=split(/./,$time/$$);
-    $namestr.=$tmp[1];
-    until (length($namestr) > 16) { $namestr.=int(rand(1000000)) }
-    return $namestr;
-}
-
-# find index of an array entry
-sub arrindex {
-  my @array=@_;
-  my $item=pop @array;
-  my $i=0;
-  foreach (@array) {
-    last if ($_ eq $item);
-    ++$i;
-  }
-  return $i;
-}
-
-# clean up and exit
-sub clean_exit {
-    foreach (@tmpfiles) { if (-e $_) { unlink $_; } }
-    exit;
-}
-
-# alternative main window, launched for fatal error messages on startup
-sub fatalmsg {
-    my($msg)=@_;
-    print STDERR $msg; # also print to stderr
-# create frame for main window
-    my $main=new MainWindow;
-    $main->resizable(0,0);
-    $main->title("TeX Documentation Browser");
-    $main->bind('<Control-q>'=>sub { exit });
-    $main->bind('<Control-k>'=>sub { exit });
-    my $msgframe=$main->Frame(-background=>"#ffcc99");
-    my $cmdframe=$main->Frame;
-    $msgframe->pack(-side=>'top');
-    $cmdframe->pack(-side=>'bottom',-fill=>'x');
-# make buttons for command frame
-    my $Qbut=$cmdframe->Button(-text=>'Kill',%butcol,
-			       -command=>sub { exit })->pack(-fill=>'x');
-# define common default font for labels and text explicitly
-    my @deffont=$Qbut->configure(-font);
-# ensure readability on high-res screens (suggested by R.Kotucha)
-    $deffont='Helvetica -16 bold' if &x_resolution > 1200;
-    $Qbut->configure(-font=>$deffont);
-    $msgframe->Label(-text=>'FATAL ERROR',
-		     -font=>$deffont)->pack(-side=>'top', -fill=>'x');
-#   get size of message text
-    my @dummy=split("\n",$msg);
-    my $nline=scalar @dummy;
-    my $msgwidth=0;
-    my $lline;
-    foreach (@dummy) {
-	$lline=length $_;
-	if ($lline > $msgwidth) { $msgwidth=$lline; }
-    }
-    my $message=$msgframe->Text(-relief=>'flat',
-				-font=>$deffont,
-				-height=>$nline,
-				-width=>$msgwidth)->pack(-side=>'top');
-    $message->insert('end',$msg);
-    $message->configure(-state=>'disabled');
-    MainLoop;
-}
-
-if ($IsWin32) {
-  sub GetScreenWidth {
-    my $GetDeviceCaps = new Win32::API('gdi32', 'GetDeviceCaps', 'NN', 'N');
-    my $HORZRES = 8; # from WinGDI.h
-    if(not defined $GetDeviceCaps) {
-      die "Can't import API GetDeviceCaps: $!\n";
-    }
-    return $GetDeviceCaps->Call(0, $HORZRES);
-  }
-
-  sub GetTempPath {
-    my $GetTempPath = new Win32::API('kernel32', 'GetTempPath', 'NP', 'N');
-    if(not defined $GetTempPath) {
-      die "Can't import API GetTempPath: $!\n";
-    }
-    my $lpBuffer = " " x 260;
-
-    $GetTempPath->Call(80, $lpBuffer);
-  }
-
-  sub ShellExecute {
-    my ($command, $file) = @_;
-    my $ShellExecute = new Win32::API('shell32', 'ShellExecute', 'NPPPPN', 'N');
-    if(not defined $ShellExecute) {
-      die "Can't import API ShellExecute: $!\n";
-    }
-    $ShellExecute->Call(0, $command, $file, '', '', 0);
-  }
-
-  sub GetHomeDir {
-    my $home = $ENV{'HOME'};
-    # Should check for CSIDL_...
-    return $home;
-  }
-}
-__END__
-Many TeX programmers provide more or less detailed manuals for
-their programs or packages. They are usually available as .dvi,
-.ps, .pdf, .html or plain text files (sometimes included in the
-.sty files instead of a separate documentation file) and can be
-accessed with this browser, which is simply an interface to find a
-documentation more easily. It starts the respective viewer for
-reading the selected documentation making use of a database file
-which contains the path entries according to the current teTeX
-texmf/doc structure; additional usage of a system-wide local and
-of individual user texmf trees with corresponding databases is also
-possible.
-The documentations are grouped in several categories shown in the
-main window; pressing one of its buttons lists all documentations
-belonging to this topic.
-The topic window lets you select one documentation file, view or
-send it to the default printer. By right-clicking on the selected
-item you get the complete path of the file.
-The search button of the main window allows you to search the
-database for a string; it does not search file names. Enter the
-string and hit <Return> to start the search or <Control-c> to
-cancel. Just hitting <Return> without typing something in will
-show the full list of files in the database.
-Defaults for the documentation root directory, the viewers, the
-converters, certain options and the printer are set in the global
-configuration file $sysrc.
-However, each user can put a copy of it as .texdocrc into his home
-directory to modify them according to his needs; modification or
-generation of ~/.texdocrc can also be done with the Settings menu.
-Additionally, the settings can be changed temporarily with this
-menu.
-
-The following key shortcuts are defined for use with the browser:
-  <Ctrl-q>	Quit browser
-  <Ctrl-m>	Raise the Main window to the foreground
-  <Ctrl-s>	Search a keyword in database (case insensitive)
-  <Ctrl-c>	Cancel/close subwindow or search entry widget
-  <Ctrl-v>	View selected document (topic windows)
-  <Ctrl-p>	Print selected document (topic windows)
-  <Ctrl-t>	Open settings menu
-  <Ctrl-k>	Kill fatal error message window (same as
-		<Ctrl-q>)
-  <Ctrl-h>	Open this help
-  <Return>	Equivalent to button press;
-		OK in selection menu and search
-  <Tab>		Next/previous widget
-
-There are the following command line options:
-  -a		autostart viewer if a listbox of search results
-		contains only one item; can also be set in a
-		configuration file
-  -v		disable suppression of viewer messages sent to
-		stderr and of certain permanent message popup
-		windows, in case this was not set in a
-		configuration file; default: off
-
-Some more information is available in the manpage of texdoctk.
-
-Comments and suggestions to:
-Thomas Ruedas
-tr@geol.ku.dk
-# Local Variables:
-# mode: perl
-# auto-fill-hook: do-auto-fill
-# End:
+../../texmf/scripts/tetex/texdoctk.pl
\ No newline at end of file