Add dist-tools directory, for tools used in creating a distribution.

Add manServer.pl inside it.

svn path=/trunk/; revision=3888

1 files changed, 2927 insertions, 0 deletions

diff --git a/dist-tools/manServer.pl b/dist-tools/manServer.pl
new file mode 100644
index 00000000..964ba8a7
--- /dev/null
+++ b/dist-tools/manServer.pl
@@ -0,0 +1,2927 @@
+#!/usr/bin/perl -T
+
+# manServer - Unix man page to HTML converter
+# Rolf Howarth, rolf@squarebox.co.uk
+# Version 1.07  16 July 2001
+
+$version = "1.07";
+$manServerUrl = "<A HREF=\"http://www.squarebox.co.uk/download/manServer.shtml\">manServer $version</A>";
+
+use Socket;
+
+$ENV{'PATH'} = "/bin:/usr/bin";
+
+initialise();
+$request = shift @ARGV;
+# Usage: manServer [-dn] filename | manServer [-s port]
+
+$root = "";
+$cgiMode = 0;
+$bodyTag = "BODY bgcolor=#F0F0F0 text=#000000 link=#0000ff vlink=#C000C0 alink=#ff0000";
+
+if ($ENV{'GATEWAY_INTERFACE'} ne "")
+{
+	*OUT = *STDOUT;
+	open(LOG, ">>/tmp/manServer.log");
+	chmod(0666, '/tmp/manServer.log');
+	$root = $ENV{'SCRIPT_NAME'};
+	$url = $ENV{'PATH_INFO'};
+	if ($ENV{'REQUEST_METHOD'} eq "POST")
+		{ $args = <STDIN>; chop $args; }
+	else
+		{ $args = $ENV{'QUERY_STRING'}; }
+	$url .= "?".$args if ($args);
+	$cgiMode = 1;
+	$date = &fmtTime(time);
+	$remoteHost = $ENV{'REMOTE_HOST'} || $ENV{'REMOTE_ADDR'};
+	$referer = $ENV{'HTTP_REFERER'};
+	$userAgent = $ENV{'HTTP_USER_AGENT'};
+	print LOG "$date\t$remoteHost\t$url\t$referer\t$userAgent\n";
+	processRequest($url);
+}
+elsif ($request eq "-s" || $request eq "")
+{
+	*LOG = *STDERR;
+	startServer();
+}
+else
+{
+	$cmdLineMode = 1;
+	if ($request =~ m/^-d(\d)/)
+	{
+		$debug = $1;
+		$request = shift @ARGV;
+	}
+	*OUT = *STDOUT;
+	*LOG = *STDERR;
+	$file = findPage($request);
+	man2html($file);
+}
+
+exit(0);
+
+
+##### Mini HTTP Server ####
+
+sub startServer
+{
+	($port) = @ARGV;
+	$port = 8888 unless $port;
+
+	$sockaddr = 'S n a4 x8';
+
+	($name, $aliases, $proto) = getprotobyname('tcp');
+	($name, $aliases, $port) = getservbyname($port, 'tcp')
+			unless $port =~ /^\d+$/;
+
+	while(1)
+	{
+		$this = pack($sockaddr, AF_INET, $port, "\0\0\0\0");
+
+		select(NS); $| = 1; select(stdout);
+
+		socket(S, PF_INET, SOCK_STREAM, $proto) || die "socket: $!";
+		if (bind(S, $this))
+		{
+			last;
+		}
+		else
+		{
+			print STDERR "Failed to bind to port $port: $!\n";
+			++$port;
+		}
+	}
+
+	listen(S, 5) || die "connect: $!";
+
+	select(S); $| = 1; select(stdout);
+
+	while(1)
+	{
+		print LOG "Waiting for connection on port $port\n";
+		($addr = accept(NS,S)) || die $!;
+		#print "accept ok\n";
+
+		($af,$rport,$inetaddr) = unpack($sockaddr,$addr);
+		@inetaddr = unpack('C4',$inetaddr);
+		print LOG "Got connection from ", join(".",@inetaddr), "\n";
+
+		while (<NS>)
+		{
+			if (m/^GET (\S+)/) { $url = $1; }
+			last if (m/^\s*$/);
+		}
+		*OUT = *NS;
+		processRequest($url);
+		close NS ;
+	}
+}
+
+
+sub processRequest
+{
+	$url = $_[0];
+	print LOG "Request = $url, root = $root\n";
+
+	if ( ($url =~ m/^([^?]*)\?(.*)$/) || ($url =~ m/^([^&]*)&(.*)$/) )
+	{
+		$request = $1;
+		$args = $2;
+	}
+	else
+	{
+		$request = $url;
+		$args = "";
+	}
+
+	@params = split(/[=&]/, $args);
+	for ($i=0; $i<=$#params; ++$i)
+	{
+		$params[$i] =~ tr/+/ /;
+		$params[$i] =~ s/%([0-9A-Fa-f][0-9A-Fa-f])/pack("C",hex($1))/eg;
+	}
+	%params = @params;
+
+	$request = $params{'q'} if ($params{'q'});
+	$searchType = $params{'t'};
+	$debug = $params{'d'};
+
+	$processed = 0;
+	$file = "";
+
+	if ($searchType)
+	{
+		print OUT "HTTP/1.0 200 Ok\n" unless ($cgiMode);
+		print OUT "Content-type: text/html\n\n";
+		print OUT "<H1>Searching not yet implemented</H1>\n";
+		print LOG "Searching not implemented\n";
+		$processed = 1;
+	}
+	elsif ($request eq "/" || $request eq "")
+	{
+		print OUT "HTTP/1.0 200 Ok\n" unless ($cgiMode);
+		print OUT "Content-type: text/html\n\n";
+		print LOG "Home page\n";
+		homePage();
+		$processed = 1;
+	}
+	elsif ($request =~ m,^/.*/$,)
+	{
+		print OUT "HTTP/1.0 200 Ok\n" unless ($cgiMode);
+		print OUT "Content-type: text/html\n\n";
+		print LOG "List directory\n";
+		listDir($request);
+		$processed = 1;
+	}
+	elsif (-f $request || -f "$request.gz" || -f "$request.bz2")
+	{
+		# Only allow fully specified files if they're in our manpath
+		foreach $md (@manpath)
+		{
+			$dir = $md;
+			if (substr($request,0,length($dir)) eq $dir)
+			{
+				print OUT "HTTP/1.0 200 Ok\n" unless ($cgiMode);
+				print OUT "Content-type: text/html\n\n";
+				man2html($request);
+				$processed = 1;
+				last;
+			}
+		}
+	}
+	else
+	{
+		$file = findPage($request);
+		if (@multipleMatches)
+		{
+			print OUT "HTTP/1.0 200 Ok\n" unless ($cgiMode);
+			print OUT "Content-type: text/html\n\n";
+			print LOG "Multiple matches\n";
+			printMatches();
+			$processed = 1;
+		}
+		elsif ($file)
+		{
+			print OUT "HTTP/1.0 301 Redirected\n" unless ($cgiMode);
+			$file .= "&d=$debug" if ($debug);
+			print OUT "Location: $root$file\n\n";
+			print LOG "Redirect to $root$file\n";
+			$processed = 1;
+		}
+	}
+
+	unless ($processed)
+	{
+		print OUT "HTTP/1.0 404 Not Found\n" unless ($cgiMode);
+		print OUT "Content-type: text/html\n\n";
+		print OUT "<HTML><HEAD>\n<TITLE>Not Found</TITLE>\n<$bodyTag>\n";
+		print OUT "<CENTER><H1><HR>Not Found<HR></H1></CENTER>\nFailed to find man page /$request\n";
+		print OUT "<P><HR><P><A HREF=\"$root/\">Main Index</A>\n</HTML>\n";
+		print STDERR "Failed to find /$request\n" unless ($cgiMode);
+	}
+}
+
+sub homePage
+{
+	print OUT "<HTML><HEAD><TITLE>Manual Pages - Main Index</TITLE>
+</HEAD><$bodyTag><CENTER><H1><HR><I>Manual Reference Pages</I> - Main Index<HR></H1></CENTER>
+<FORM ACTION=\"$root/\" METHOD=get>\n";
+	$uname = `uname -s -r`;
+	if (! $?)
+	{
+		$hostname = `hostname`;
+		print OUT "<B>$uname pages on $hostname</B><P>\n";
+	}
+	# print OUT "<SELECT name=t> <OPTION selected value=0>Command name
+	# <OPTION value=1>Keyword search <OPTION value=2>Full text search</SELECT>\n";
+	print OUT "Command name: <INPUT name=q size=20> <INPUT type=submit value=\"Show Page\"> </FORM><P>\n";
+	loadManDirs();
+	foreach $dir (@mandirs)
+	{
+		($section) = ($dir =~ m/man([0-9A-Za-z]+)$/);
+		print OUT "<A HREF=\"$root$dir/\">$dir" ;
+		print OUT "- <I>$sectionName{$section}</I>" if ($sectionName{$section});
+		print OUT "</A><BR>\n";
+	}
+	print OUT "<P><HR><P><FONT SIZE=-1>Generated by $manServerUrl from local unix man pages.</FONT>\n</BODY></HTML>\n";
+}
+
+sub listDir
+{
+	foreach $md (@manpath)
+	{
+		$dir = $md;
+		if (substr($request,0,length($dir)) eq $dir)
+		{
+			$request =~ s,/$,,;
+			($section) = ($request =~ m/man([0-9A-Za-z]+)$/);
+			$sectionName = $sectionName{$section};
+			$sectionName = "Manual Reference Pages" unless ($sectionName);
+			print OUT "<HTML><HEAD><TITLE>Contents of $request</TITLE></HEAD>\n<$bodyTag>\n";
+			print OUT "<CENTER><H1><HR><NOBR><I>$sectionName</I></NOBR> - <NOBR>Index of $request</NOBR><HR></H1></CENTER>\n";
+			print OUT "<FORM ACTION=\"$root/\" METHOD=get>\n";
+			print OUT "Command name: <INPUT name=q size=20> <INPUT type=submit value=\"Show Page\"> </FORM><P>\n";
+
+			if (opendir(DIR, $request))
+			{
+				@files = sort readdir DIR;
+				foreach $f (@files)
+				{
+					next if ($f eq "." || $f eq ".." || $f !~ m/\./);
+					$f =~ s/\.(gz|bz2)$//;
+					# ($name) = ($f =~ m,/([^/]*)$,);
+					print OUT "<A HREF=\"$root$request/$f\">$f</A>&nbsp;\n";
+				}
+				closedir DIR;
+			}
+			print OUT "<P><A HREF=\"$root/\">Main Index</A>\n</HTML>\n";
+			print OUT "<P><HR><P><FONT SIZE=-1>Generated by $manServerUrl from local unix man pages.</FONT>\n</BODY></HTML>\n";
+			return;
+		}
+	}
+	print OUT "<H1>Directory $request not known</H1>\n";
+}
+
+sub printMatches
+{
+	print OUT "<HTML><HEAD><TITLE>Ambiguous Request '$request'</TITLE></HEAD>\n<$bodyTag>\n";
+	print OUT "<CENTER><H1><HR>Ambiguous Request '$request'<HR></H1></CENTER>\nPlease select one of the following pages:<P><BLOCKQUOTE>";
+	foreach $f (@multipleMatches)
+	{
+		print OUT "<A HREF=\"$root$f\">$f</A><BR>\n";
+	}
+	print OUT "</BLOCKQUOTE><HR><P><A HREF=\"$root/\">Main Index</A>\n</HTML>\n";
+}
+
+
+##### Process troff input using man macros into HTML #####
+
+sub man2html
+{
+	$file = $_[0];
+	$srcfile = $file;
+	$zfile = $file;
+	if (! -f $file)
+	{
+		if (-f "$file.gz")
+		{
+			$zfile = "$file.gz";
+			$zcat = "/usr/bin/zcat";
+			$zcat = "/bin/zcat" unless (-x $zcat);
+			$srcfile = "$zcat $zfile |";
+			$srcfile =~ m/^(.*)$/;
+			$srcfile = $1;	# untaint
+		}
+		elsif (-f "$file.bz2")
+		{
+			$zfile = "$file.bz2";
+			$srcfile = "/usr/bin/bzcat $zfile |";
+			$srcfile =~ m/^(.*)$/;
+			$srcfile = $1;	# untaint
+		}
+	}
+	print LOG "man2html $file\n";
+	$foundNroffTag = 0;
+	loadContents($file);
+	unless (open(SRC, $srcfile))
+	{
+		print OUT "<H1>Failed to open $file</H1>\n";
+		print STDERR "Failed to open $srcfile\n";
+		return;
+	}
+	($dir,$page,$sect) = ($file =~ m,^(.*)/([^/]+)\.([^.]+)$,);
+	$troffTable = 0;
+	%macro = ();
+	%renamedMacro = ();
+	%deletedMacro = ();
+	@indent = ();
+	@tabstops = ();
+	$indentLevel = 0;
+	$prevailingIndent = 6;
+	$trapLine = 0;
+	$blockquote = 0;
+	$noSpace = 0;
+	$firstSection = 0;
+	$eqnStart = "";
+	$eqnEnd = "";
+	$eqnMode = 0;
+	%eqndefs = ();
+	$defaultNm = "";
+	$title = $file;
+	$title = "Manual Page - $page($sect)" if ($page && $sect);
+
+	$_ = getLine();
+	if (m/^.so (man.*)$/)
+	{
+		# An .so include on the first line only is replaced by the referenced page.
+		# (See elsewhere for processing of included sections that occur later in document.)
+		man2html("$dir/../$1");
+		return;
+	}
+
+	$perlPattern = "";
+	if ($file =~ m/perl/)
+	{
+		&loadPerlPages();
+		$perlPattern = join('|', grep($_ ne $page, keys %perlPages));
+	}
+
+	print OUT "<HTML><HEAD>\n<TITLE>$title</TITLE>\n<$bodyTag><A NAME=top></A>\n";
+
+	if ($foundNroffTag)
+	{
+		do
+		{
+			preProcessLine();
+			processLine();
+		}
+		while(getLine());
+		endNoFill();
+		endParagraph();
+	}
+	else
+	{
+		# Special case where input is not nroff at all but is preformatted text
+		$sectionName = "Manual Reference Pages";
+		$sectionNumber = $sect;
+		$left = "Manual Page";
+		$right = "Manual Page";
+		$macroPackage = "(preformatted text)";
+		$pageName = "$page($sect)";
+		$saveCurrentLine = $_;
+		outputPageHead();
+		$_ = $saveCurrentLine;
+		print OUT "<PRE>\n";
+		do
+		{
+			print OUT $_;
+		}
+		while(getLine());
+		print OUT "</PRE>\n";
+	}
+	outputPageFooter();
+}
+
+sub outputPageHead
+{
+	plainOutput( "<CENTER>\n" );
+	outputLine( "<H1><HR><I>$sectionName &nbsp;-&nbsp;</I><NOBR>$pageName</NOBR><HR></H1>\n" );
+	plainOutput( "</CENTER>\n" );
+}
+
+sub outputPageFooter
+{
+	if ($pageName)
+	{
+		unless ($cmdLineMode)
+		{
+			plainOutput( "<FORM ACTION=\"$root/\" METHOD=get>\n" );
+			plainOutput( "Jump to page &nbsp;<INPUT name=q size=12>&nbsp; or go to <A HREF=#top>Top of page</A>&nbsp;|&nbsp;\n" );
+			plainOutput( "<A HREF=\"$root$dir/\">Section $sectionNumber</A>&nbsp;|&nbsp;\n" );
+			plainOutput( "<A HREF=\"$root/\">Main Index</A>.\n" );
+			plainOutput( "<FORM>\n" );
+		}
+		endBlockquote();
+		outputLine("<P><HR>\n<TABLE width=100%><TR> <TD width=33%><I>$left</I></TD> <TD width=33% align=center>$pageName</TD> <TD align=right width=33%><I>$right</I></TD> </TR></TABLE>");
+	}
+	plainOutput("<FONT SIZE=-1>Generated by $manServerUrl from $zfile $macroPackage.</FONT>\n</BODY></HTML>\n");
+}
+
+sub outputContents
+{
+	print OUT "<A name=contents></A><H3>CONTENTS</H3></A>\n";
+	blockquote();
+	for ($id=1; $id<=$#contents; ++$id)
+	{
+		$name = $contents[$id];
+		$pre = "";
+		$pre = "&nbsp; &nbsp; &nbsp;" if ($name =~ m/^ /);
+		$pre .= "&nbsp; &nbsp; &nbsp;" if ($name =~ m/^  /);
+		$name =~ s,^\s+,,;
+		next if ($name eq "" || $name =~ m,^/,);
+		unless ($name =~ m/[a-z]/)
+		{
+			$name = "\u\L$name";
+			$name =~ s/ (.)/ \u\1/g;
+		}
+		outputLine("$pre<A HREF=#$id>$name</A><BR>\n");
+	}
+	endBlockquote();
+}
+
+# First pass to extract table of contents
+sub loadContents
+{
+	@contents = ();
+	%contents = ();
+	# print STDERR "SRCFILE = $srcfile\n";
+	open(SRC, $srcfile) || return;
+	while (<SRC>)
+	{
+		preProcessLine();
+		$foundNroffTag = $foundNroffTag || (m/^\.(\\\"|TH|so) /);
+		if (m/^\.(S[HShs]) ([A-Z].*)\s*$/)
+		{
+			$foundNroffTag = 1;
+			$c = $1;
+			$t = $2;
+			$t =~ s/"//g;
+			$id = @contents;
+			if ($c eq "SH" || $c eq "Sh")
+			{
+				push(@contents, $t);
+			}
+			elsif ($t =~ m/\\f/)
+			{
+				$t =~ s/\\f.//g;
+				push(@contents, "  $t");
+			}
+			else
+			{
+				push(@contents, " $t");
+			}
+			$contents{"\U$t"} = $id;
+		}
+	}
+	close SRC;
+}
+
+# Preprocess $_
+sub preProcessLine
+{
+	# Remove spurious white space to canonicise the input
+	chop;
+	$origLine = $_;
+	s, $,,g;
+	s,^',.,;	# treat non breaking requests as if there was a dot
+	s,^\.\s*,\.,;
+
+	if ($eqnMode == 1)
+	{
+		if (m/$eqnEnd/)
+		{
+			s,^(.*?)$eqnEnd,&processEqnd($1),e;
+			$eqnMode = 0;
+		}
+		else
+		{
+			&processEqns($_);
+		}
+	}
+	if ($eqnStart && $eqnMode==0)
+	{
+		s,$eqnStart(.*?)$eqnEnd,&processEqnd($1),ge;
+		if (m/$eqnStart/)
+		{
+			s,$eqnStart(.*)$,&processEqns($1),e;
+			$eqnMode = 1;
+		}
+	}
+
+	# XXX Note: multiple levels of escaping aren't handled properly, eg. \\*.. as a macro argument
+	# should get interpolated as string but ends up with a literal '\' being copied through to output.
+	s,\\\\\*q,&#34;,g; # treat mdoc \\*q as special case
+	
+	s,\\\\,_DBLSLASH_,g;
+	s,\\ ,_SPACE_,g;
+	s,\s*\\".*$,,;
+	s,\\$,,;
+
+	# Then apply any variable substitutions and escape < and >
+	# (which has to be done before we start inserting tags...)
+	s,\\\*\((..),$vars{$1},ge;
+	s/\\\*([*'`,^,:~].)/$vars{$1}||"\\*$1"/ge;
+	s,\\\*(.),$vars{$1},ge;
+	# Expand special characters for the first time (eg. \(<-
+	s,\\\((..),$special{$1}||"\\($1",ge;
+	s,<,&lt;,g;
+	s,>,&gt;,g;
+
+	# Interpolate width and number registers
+	s,\\w(.)(.*?)\1,&width($2),ge;
+	s,\\n\((..),&numreg($1),ge;
+	s,\\n(.),&numreg($1),ge;
+}
+
+# Undo slash escaping, normally done at output stage, also in macro defn
+sub postProcessLine
+{
+	s,_DBLSLASH_,\\,g;
+	s,_SPACE_, ,g;
+}
+
+# Rewrite the line, expanding escapes such as font styles, and output it.
+# The line may be a plain text troff line, or it might be the expanded output of a
+# macro in which case some HTML tags may already have been inserted into the text.
+sub outputLine
+{
+	$_ = $_[0];
+
+	print OUT "<!-- Output: \"$_\" -->\n" if ($debug>1);
+
+	if ($needBreak)
+	{
+		plainOutput("<!-- Need break --><BR>\n");
+		lineBreak();
+	}
+	if ($textSinceBreak && !$noFill && $_ =~ m/^\s/)
+	{
+		plainOutput("<BR>\n");
+		lineBreak();
+	}
+
+	s,\\&\.,&#46;,g;    # \&. often used to escape dot at start of line
+	s,\\\.,&#46;,g;
+	s,\\\^,,g;
+	s,\\\|,,g;
+	s,\\c,,g;
+	s,\\0,&nbsp;,g;
+	s,\\t,\t,g;
+
+	s,\\%,&nbsp;,g;
+	s,\\{,,g;
+	s,\\},,g;
+	s,\\$,,g;
+
+	s,\\e,&#92;,g;
+	s,\\([-+_~#[]),\1,g;
+
+	# Can't implement local motion tags
+	s,\\[hv](.).*?\1,,g;
+	s,\\z,,g;
+
+	# Font changes, super/sub-scripts and font size changes
+	s,\\(f[^(]|f\(..|u|d|s[-+]?\d),&inlineStyle($1),ge;
+
+	# Overstrike
+	if (m/\\o/)
+	{
+		# handle a few special accent cases we know how to deal with
+		s,\\o(.)([aouAOU])"\1,\\o\1\2:\1,g;
+		s,\\o(.)(.)\\(.)\1,\\o\1\2\3\1,g;
+		s;\\o(.)([A-Za-z])(['`:,^~])\1;\\o\1\3\2\1;g;
+		#s,\\o(.)(.*?)\1,"<BLINK>".($vars{$2}||$2)."</BLINK>",ge;
+		s,\\o(.)(.*?)\1,$vars{$2}||$2,ge;
+	}
+	# Bracket building (ignore)
+	s,\\b(.)(.*?)\1,\2,g;
+
+	s,\\`,&#96;,g;
+	s,\\',&#39;,g;
+	s,',&#146;,g;
+	s,`,&#145;,g;
+
+	# Expand special characters introduced by eqn
+	s,\\\((..),$special{$1}||"\\($1",ge;
+	s,\\\((..),<BLINK>\\($1</BLINK>,g unless (m,^\.,);
+
+	# Don't know how to handle other escapes
+	s,(\\[^&]),<BLINK>\1</BLINK>,g unless (m,^\.,);
+
+	postProcessLine();
+
+	# Insert links for http, ftp and mailto URLs
+	# Recognised URLs are sequence of alphanumerics and special chars like / and ~
+	# but must finish with an alphanumeric rather than punctuation like "."
+	s,\b(http://[-\w/~:@.%#+$?=]+\w),<A HREF=\"\1\">\1</A>,g;
+	s,\b(ftp://[-\w/~:@.%#+$?=]+),<A HREF=\"\1\">\1</A>,g;
+	s,([-_A-Za-z0-9.]+@[A-Za-z][-_A-Za-z0-9]*\.[-_A-Za-z0-9.]+),<A HREF=\"mailto:\1\">\1</A>,g;
+
+	# special case for things like 'perlre' as it's so useful but the
+	# pod-generated pages aren't very parser friendly...
+	if ($perlPattern && ! m/<A HREF/i)
+	{
+		s,\b($perlPattern)\b,<A HREF=\"$root$perlPages{$1}\">\1</A>,g;
+	}
+
+	# Do this late so \& can be used to suppress conversion of URLs etc.
+	s,\\&,,g;
+
+	# replace tabs with spaces to next multiple of 8
+	if (m/\t/)
+	{
+		$tmp = $_;
+		$tmp =~ s/<[^>]*>//g;
+		$tmp =~ s/&[^;]*;/@/g;
+		@tmp = split(/\t/, $tmp);
+		$pos = 0;
+		for ($i=0; $i<=$#tmp; ++$i)
+		{
+			$pos += length($tmp[$i]);
+			$tab[$i] = 0;
+			$tab[$i] = 8 - $pos%8 unless (@tabstops);
+			foreach $ts (@tabstops)
+			{
+				if ($pos < $ts)
+				{
+					$tab[$i] = $ts-$pos;
+					last;
+				}
+			}
+			$pos += $tab[$i];
+		}
+		while (m/\t/)
+		{
+			s,\t,"&nbsp;" x (shift @tab),e;
+		}
+	}
+
+	$textSinceBreak = $_ unless ($textSinceBreak);
+	print OUT $_;
+}
+
+# Output a line consisting purely of HTML tags which shouldn't be regarded as
+# a troff output line.
+sub plainOutput
+{
+	print OUT $_[0];
+}
+
+
+# Output the original line for debugging
+sub outputOrigLine
+{
+	print OUT "<!-- $origLine -->\n";
+}
+
+# Use this to read the next input line (buffered to implement lookahead)
+sub getLine
+{
+	$lookaheadPtr = 0;
+	if (@lookahead)
+	{
+		$_ =  shift @lookahead;
+		return $_;
+	}
+	$_ = <SRC>;
+}
+
+# Look ahead to peek at the next input line
+sub _lookahead
+{
+	# set lookaheadPtr to 0 to re-read the lines we've looked ahead at
+	if ($lookaheadPtr>=0 && $lookaheadPtr <= $#lookahead)
+	{
+		return $lookahead[$lookaheadPtr++];
+	}
+	$lookaheadPtr = -1;
+	$ll = <SRC>;
+	push(@lookahead, $ll);
+	return $ll;
+}
+
+# Consume the last line that was returned by lookahead
+sub consume
+{
+	--$lookaheadPtr;
+	if ($lookaheadPtr>=0 && $lookaheadPtr <= $#lookahead)
+	{
+		$removed = $lookahead[$lookaheadPtr];
+		@lookahead = (@lookahead[0..$lookaheadPtr-1],@lookahead[$lookaheadPtr+1..$#lookahead]);
+	}
+	else
+	{
+		$removed = pop @lookahead;
+	}
+	chop $removed;
+	plainOutput("<!-- Consumed $removed -->\n");
+}
+
+# Look ahead skipping comments and other common non-text tags
+sub lookahead
+{
+	$ll = _lookahead();
+	while ($ll =~ m/^\.(\\"|PD|IX|ns)/)
+	{
+		$ll = _lookahead();
+	}
+	return $ll;
+}
+
+# Process $_, expaning any macros into HTML and calling outputLine().
+# If necessary, this method can read more lines of input from <SRC> (.ig & .de)
+# The following state variables are used:
+# ...
+sub processLine
+{
+	$doneLine = 1;	# By default, this counts as a line for trap purposes
+
+	s,^\.if t ,,;
+	s,^\.el ,,;		# conditions assumed to evaluate false, so else must be true...
+
+	if ($troffTable)
+	{
+		processTable();
+	}
+	elsif ($eqnMode == 2)	
+	{
+		plainOutput("<!-- $_ -->\n");
+		processEqns($_);
+	}
+	elsif (m/^\./)
+	{
+		processMacro();
+	}
+	else
+	{
+		processPlainText();
+	}
+	if ($doneLine)
+	{
+		# Called after processing (most) input lines to decrement trapLine. This is needed
+		# to implement the .it 1 trap after one line for .TP, where the first line is outdented
+		if ($trapLine > 0)
+		{
+			--$trapLine;
+			if ($trapLine == 0)
+			{
+				&$trapAction;
+			}
+		}
+	}
+}
+
+
+# Process plain text lines
+sub processPlainText
+{
+	if ($_ eq "")
+	{
+		lineBreak();
+		plainOutput("<P>\n");
+		return;
+	}
+
+	s,(\\f[23BI])([A-Z].*?)(\\f.),$1.($contents{"\U$2"}?"<A HREF=#".$contents{"\U$2"}.">$2</A>":$2).$3,ge;
+
+	if ($currentSection eq "SEE ALSO" && ! $cmdLineMode)
+	{
+		# Some people don't use BR or IR for see also refs
+		s,(^|\s)([-.A-Za-z_0-9]+)\s?\(([0-9lL][0-9a-zA-Z]*)\),\1<A HREF=\"$root/$2.$3\">$2($3)</A>,g;
+	}
+	outputLine("$_\n");
+}
+
+
+# Process macros and built-in directives
+sub processMacro
+{
+	outputOrigLine();
+
+	# Place macro arguments (space delimited unless within ") into @p
+	# Remove " from $_, place command in $c, remainder in $joined
+
+	@p = grep($_ !~ m/^\s*$/, split(/("[^"]*"|\s+)/) );
+	grep(s/"//g, @p);
+	$_ = join(" ", @p);
+	$p[0] =~ s/^\.//;
+	$c = $p[0];
+	$joined = join(" ", @p[1..$#p]);
+	$joined2 = join(" ", @p[2..$#p]);
+	$joined3 = join(" ", @p[3..$#p]);
+
+	if ($macro{$c})				# Expand macro
+	{
+		# Get full macro text
+		$macro = $macro{$c};
+		# Interpolate arguments
+		$macro =~ s,\\\$(\d),$p[$1],ge;
+		#print OUT "<!-- Expanding $c to\n$macro-->\n";
+		foreach $_ (split(/\n/, $macro))
+		{
+			$_ .= "\n";
+			preProcessLine();
+			processLine();
+		}
+		$doneLine = 0;
+		return;
+	}
+	elsif ($renamedMacro{$c})
+	{
+		$c = $renamedMacro{$c};
+	}
+
+	if ($c eq "ds")			# Define string
+	{
+		$vars{$p[1]} = $joined2;
+		$doneLine = 0;
+	}
+	elsif ($c eq "nr")			# Define number register
+	{
+		$number{$p[1]} = evalnum($joined2);
+		$doneLine = 0;
+	}
+	elsif ($c eq "ti")			# Temporary indent
+	{
+		plainOutput("&nbsp; &nbsp;");
+	}
+	elsif ($c eq "rm")
+	{
+		$macroName = $p[1];
+		if ($macro{$macroName})
+		{
+			delete $macro{$macroName};
+		}
+		else
+		{
+			$deletedMacro{$macroName} = 1;
+		}
+	}
+	elsif ($c eq "rn")
+	{
+		$oldName = $p[1];
+		$newName = $p[2];
+		$macro = $macro{$oldName};
+		if ($macro)
+		{
+			if ($newName =~ $reservedMacros && ! $deletedMacro{$newName})
+			{
+				plainOutput("<!-- Not overwriting reserved macro '$newName' -->\n");
+			}
+			else
+			{
+				$macro{$newName} = $macro;
+				delete $deletedMacro{$newName};
+			}
+			delete $macro{$oldName};
+		}
+		else
+		{
+			# Support renaming of reserved macros by mapping occurrences of new name
+			# to old name after macro expansion so that built in definition is still
+			# available, also mark the name as deleted to override reservedMacro checks.
+			plainOutput("<!-- Fake renaming reserved macro '$oldName' -->\n");
+			$renamedMacro{$newName} = $oldName;
+			$deletedMacro{$oldName} = 1;
+		}
+	}
+	elsif ($c eq "de" || $c eq "ig")	# Define macro or ignore
+	{
+		$macroName = $p[1];
+		if ($c eq "ig")
+			{ $delim = ".$p[1]"; }
+		else
+			{ $delim = ".$p[2]"; }
+		$delim = ".." if ($delim eq ".");
+		# plainOutput("<!-- Scanning for delimiter $delim -->\n");
+
+		$macro = "";
+		$_ = getLine();
+		preProcessLine();
+		while ($_ ne $delim)
+		{
+			postProcessLine();
+			outputOrigLine();
+			$macro .= "$_\n";
+			$_ = getLine();
+			last if ($_ eq "");
+			preProcessLine();
+		}
+		outputOrigLine();
+		# plainOutput("<!-- Found delimiter -->\n");
+		if ($c eq "de")
+		{
+			if ($macroName =~ $reservedMacros && ! $deletedMacro{$macroName})
+			{
+				plainOutput("<!-- Not defining reserved macro '$macroName' ! -->\n");
+			}
+			else
+			{
+				$macro{$macroName} = $macro;
+				delete $deletedMacro{$macroName};
+			}
+		}
+	}
+	elsif ($c eq "so")			# Source
+	{
+		plainOutput("<P>[<A HREF=\"$root$dir/../$p[1]\">Include document $p[1]</A>]<P>\n");
+	}
+	elsif ($c eq "TH" || $c eq "Dt")			# Man page title
+	{
+		endParagraph();
+		$sectionNumber = $p[2];
+		$sectionName = $sectionName{"\L$sectionNumber"};
+		$sectionName = "Manual Reference Pages" unless ($sectionName);
+		$pageName = "$p[1] ($sectionNumber)";
+		outputPageHead();
+		if ($c eq "TH")
+		{
+			$right = $p[3];
+			$left = $p[4];
+			$left = $osver unless ($left);
+			$macroPackage = "using man macros";
+		}
+		else
+		{
+			$macroPackage = "using doc macros";
+		}
+	}
+	elsif ($c eq "Nd")
+	{
+		outputLine("- $joined\n");
+	}
+	elsif ($c eq "SH" || $c eq "SS" || $c eq "Sh" || $c eq "Ss")		# Section/subsection
+	{
+		lineBreak();
+		endNoFill();
+		endParagraph();
+		$id = $contents{"\U$joined"};
+		$currentSection = $joined;
+
+		if ($c eq "SH" || $c eq "Sh")
+		{
+			endBlockquote();
+			if ($firstSection++==1)	# after first 'Name' section
+			{
+				outputContents();
+			}
+			outputLine( "<A name=$id>\n\n     <H3>$joined</H3>\n\n</A>\n" );
+			blockquote();
+		}
+		elsif ($joined =~ m/\\f/)
+		{
+			$joined =~ s/\\f.//g;
+			$id = $contents{"\U$joined"};
+			outputLine( "<A name=$id>\n<H4><I>$joined</I></H4></A>\n" );
+		}
+		else
+		{
+			endBlockquote();
+			outputLine( "<A name=$id>\n\n    <H4>&nbsp; &nbsp; $joined</H4>\n</A>\n" );
+			blockquote();
+		}
+		lineBreak();
+	}
+	elsif ($c eq "TX" || $c eq "TZ")	# Document reference
+	{
+		$title = $title{$p[1]};
+		$title = "Document [$p[1]]" unless ($title);
+		outputLine( "\\fI$title\\fP$joined2\n" );
+	}
+	elsif ($c eq "PD")			# Line spacing
+	{
+		$noSpace = ($p[1] eq "0");
+		$doneLine = 0;
+	}
+	elsif ($c eq "TS")			# Table start
+	{
+		unless ($macroPackage =~ /tbl/)
+		{
+			if ($macroPackage =~ /eqn/)
+				{ $macroPackage =~ s/eqn/eqn & tbl/; }
+			else
+				{ $macroPackage .= " with tbl support"; }
+		}
+		resetStyles();
+		endNoFill();
+		$troffTable = 1;
+		$troffSeparator = "\t";
+		plainOutput( "<P><BLOCKQUOTE><TABLE bgcolor=#E0E0E0 border=1 cellspacing=0 cellpadding=3>\n" );
+	}
+	elsif ($c eq "EQ")			# Eqn start
+	{
+		unless ($macroPackage =~ /eqn/)
+		{
+			if ($macroPackage =~ /tbl/)
+				{ $macroPackage =~ s/tbl/tbl & eqn/; }
+			else
+				{ $macroPackage .= " with eqn support"; }
+		}
+		$eqnMode = 2;
+	}
+	elsif ($c eq "ps")			# Point size
+	{
+		plainOutput(&sizeChange($p[1]));
+	}
+	elsif ($c eq "ft")			# Font change
+	{
+		plainOutput(&fontChange($p[1]));
+	}
+	elsif ($c eq "I" || $c eq "B")	# Single word font change
+	{
+		$id = $contents{"\U$joined"};
+		if ($id && $joined =~ m/^[A-Z]/)
+			{ $joined = "<A HREF=#$id>$joined</A>"; }
+		outputLine( "\\f$c$joined\\fP " );
+		plainOutput("\n") if ($noFill);
+	}
+	elsif ($c eq "SM")			# Single word smaller
+	{
+		outputLine("\\s-1$joined\\s0 ");
+		$doneLine = 0 unless ($joined);
+	}
+	elsif ($c eq "SB")			# Single word bold and small
+	{
+		outputLine("\\fB\\s-1$joined\\s0\\fP ");
+	}
+	elsif (m/^\.[BI]R (\S+)\s?\(\s?([0-9lL][0-9a-zA-Z]*)\s?\)(.*)$/)
+	{
+		# Special form, .BR is generally used for references to other pages
+		# Annoyingly, some people have more than one per line...
+		# Also, some people use .IR ...
+		for ($i=1; $i<=$#p; $i+=2)
+		{
+			$pair = $p[$i]." ".$p[$i+1];
+			if ($p[$i+1] eq "(")
+			{
+				$pair .= $p[$i+2].$p[$i+3];
+				$i += 2;
+			}
+			if ($pair =~ m/^(\S+)\s?\(\s?([0-9lL][0-9a-zA-Z]*)\s?\)(.*)$/)
+			{
+				if ($cmdLineMode)
+					{ outputLine( "\\fB$1\\fR($2)$3\n" ); }
+				else
+					{ outputLine( "<A HREF=\"$root/$1.$2\">$1($2)</A>$3\n" ); }
+			}
+			else
+				{ outputLine( "$pair\n" ); }
+		}
+	}
+	elsif ($c eq "BR" || $c eq "BI" || $c eq "IB" ||
+		   $c eq "IR" || $c eq "RI" || $c eq "RB")
+	{
+		$f1 = (substr($c ,0,1));
+		$f2 = (substr($c,1,1));
+
+		# Check if first param happens to be a section name
+		$id = $contents{"\U$p[1]"};
+		if ($id && $p[1] =~ m/^[A-Z]/)
+		{
+			$p[1] = "<A HREF=#$id>$p[1]</A>";
+		}
+
+		for ($i=1; $i<=$#p; ++$i)
+		{
+			$f = ($i%2 == 1) ? $f1 : $f2;
+			outputLine("\\f$f$p[$i]");
+		}
+		outputLine("\\fP ");
+		plainOutput("\n") if ($noFill);
+	}
+	elsif ($c eq "nf" || $c eq "Bd")			# No fill
+	{
+		startNoFill();
+	}
+	elsif ($c eq "fi" || $c eq "Ed")			# Fill
+	{
+		endNoFill();
+	}
+	elsif ($c eq "HP")
+	{
+		$indent = evalnum($p[1]);
+		if ($trapOnBreak)
+		{
+			plainOutput("<BR>\n");
+		}
+		else
+		{
+			# Outdent first line, ie. until next break
+			$trapOnBreak = 1;
+			$trapAction = *trapHP;
+			newParagraph($indent);
+			plainOutput( "<TD colspan=2>\n" );
+			$colState = 2;
+		}
+	}
+	elsif ($c eq "IP")
+	{
+		$trapOnBreak = 0;
+		$tag = $p[1];
+		$indent = evalnum($p[2]);
+		newParagraph($indent);
+		outputLine("<TD$width>\n$tag\n</TD><TD>\n");
+		$colState = 1;
+		lineBreak();
+	}
+	elsif ($c eq "TP")
+	{
+		$trapOnBreak = 0;
+		$trapLine = 1;	# Next line is tag, then next column
+		$doneLine = 0;	# (But don't count this line)
+		$trapAction = *trapTP;
+		$indent = evalnum($p[1]);
+		$tag = lookahead();
+		chop $tag;
+		$i = ($indent ? $indent : $prevailingIndent) ;
+		$w = width($tag);
+		if ($w > $i)
+		{
+			plainOutput("<!-- Length of tag '$tag' ($w) > indent ($i) -->\n") if ($debug);
+			newParagraph($indent);
+			$trapAction = *trapHP;
+			plainOutput( "<TD colspan=2>\n" );
+			$colState = 2;
+		}
+		else
+		{
+			newParagraph($indent);
+			plainOutput( "<TD$width nowrap>\n" );
+			$colState = 0;
+		}
+		$body = lookahead();
+		$lookaheadPtr = 0;
+		if ($body =~ m/^\.[HILP]?P/)
+		{
+			chop $body;
+			plainOutput("<!-- Suppressing TP body due to $body -->\n");
+			$trapLine = 0;
+		}
+	}
+	elsif ($c eq "LP" || $c eq "PP" || $c eq "P" || $c eq "Pp")	# Paragraph
+	{
+		$trapOnBreak = 0;
+		$prevailingIndent = 6;
+		if ($indent[$indentLevel] > 0 && $docListStyle eq "")
+		{
+			$line = lookahead();
+			if ($line =~ m/^\.(TP|IP|HP)/)
+			{
+				plainOutput("<!-- suppressed $c before $1 -->\n");
+			}
+			elsif ($line =~ m/^\.RS/)
+			{
+				plainOutput("<P>\n");
+			}
+			else
+			{
+				endRow();
+				$foundTag = "";
+				$lookaheadPtr = 0;
+				do
+				{
+					$line = lookahead();
+					if ($line =~ m/^\.(TP|HP|IP|RS)( \d+)?/)
+					{
+						$indent = $2;
+						$indent = $prevailingIndent unless ($2);
+						if ($indent == $indent[$indentLevel])
+							{ $foundTag = $1; }
+						$line = "";
+					}
+				}
+				while ($line ne "" && $line !~ m/^\.(RE|SH|SS|PD)/);
+				$lookaheadPtr = 0;
+				if ($foundTag)
+				{
+					plainOutput("<!-- Found tag $foundTag -->\n");
+					plainOutput("<TR><TD colspan=2>\n");
+					$colState = 2;
+				}
+				else
+				{
+					plainOutput("<!-- $c ends table -->\n");
+					setIndent(0);
+				}
+			}
+		}
+		else
+		{
+			plainOutput("<P>\n");
+		}
+		lineBreak();
+	}
+	elsif ($c eq "br")			# Break
+	{
+		if ($trapOnBreak)
+		{
+			# Should this apply to all macros that cause a break?
+			$trapOnBreak = 0;
+			&$trapAction();
+		}
+		$needBreak = 1 if ($textSinceBreak);
+	}
+	elsif ($c eq "sp")			# Space
+	{
+		lineBreak();
+		plainOutput("<P>\n");
+	}
+	elsif ($c eq "RS")			# Block indent start
+	{
+		if ($indentLevel==0 && $indent[0]==0)
+		{
+			blockquote();
+		}
+		else
+		{
+			$indent = $p[1];
+			$indent = $prevailingIndent unless ($indent);
+			if ($indent > $indent[$indentLevel] && !$extraIndent)
+			{
+				$extraIndent = 1;
+				++$indentLevel;
+				$indent[$indentLevel] = 0;
+				setIndent($indent-$indent[$indentLevel-1]);
+				plainOutput("<TR><TD$width>&nbsp;</TD><TD>\n");
+				$colState = 1;
+			}
+			elsif ($indent < $indent[$indentLevel] || $colState==2)
+			{
+				endRow();
+				setIndent($indent);
+				plainOutput("<TR><TD$width>&nbsp;</TD><TD>\n");
+				$colState = 1;
+			}
+			++$indentLevel;
+			$indent[$indentLevel] = 0;
+		}
+		$prevailingIndent = 6;
+	}
+	elsif ($c eq "RE")			# Block indent end
+	{
+		if ($extraIndent)
+		{
+			endRow();
+			setIndent(0);
+			--$indentLevel;
+			$extraIndent = 0;
+		}
+		if ($indentLevel==0)
+		{
+			endParagraph();
+			if ($blockquote>0)
+			{
+				plainOutput("</BLOCKQUOTE>\n");
+				--$blockquote;
+			}
+		}
+		else
+		{
+			endRow();
+			setIndent(0);
+			--$indentLevel;
+		}
+		$prevailingIndent = $indent[$indentLevel];
+		$prevailingIndent = 6 unless($prevailingIndent);
+	}
+	elsif ($c eq "DT")			# default tabs
+	{
+		@tabstops = ();
+	}
+	elsif ($c eq "ta")			# Tab stops
+	{
+		@tabstops = ();
+		for ($i=0; $i<$#p; ++$i)
+		{
+			$ts = $p[$i+1];
+			$tb = 0;
+			if ($ts =~ m/^\+/)
+			{
+				$tb = $tabstops[$i-1];
+				$ts =~ s/^\+//;
+			}
+			$ts = evalnum($ts);
+			$tabstops[$i] = $tb + $ts;
+		}
+		plainOutput("<!-- Tabstops set at ".join(",", @tabstops)." -->\n") if ($debug);
+	}
+	elsif ($c eq "It")			# List item (mdoc)
+	{
+		lineBreak();
+		if ($docListStyle eq "-tag")
+		{
+			endRow() unless($multilineIt);
+			if ($tagWidth)
+			{
+				setIndent($tagWidth);
+			}
+			else
+			{
+				setIndent(6);
+				$width = "";	# let table take care of own width
+			}
+			if ($p[1] eq "Xo")
+			{
+				plainOutput("<TR valign=top><TD colspan=2>");
+			}
+			else
+			{
+				$tag = &mdocStyle(@p[1..$#p]);
+				$body = lookahead();
+				if ($body =~ m/^\.It/)
+					{ $multilineItNext = 1; }
+				else
+					{ $multilineItNext = 0; }
+				if ($multilineIt)
+				{
+					outputLine("<BR>\n$tag\n");
+				}
+				elsif ($multilineItNext || $tagWidth>0 && width($tag)>$tagWidth)
+				{
+					outputLine("<TR valign=top><TD colspan=2>$tag\n");
+					$colState = 2;
+				}
+				else
+				{
+					outputLine("<TR valign=top><TD>$tag\n");
+					$colState = 1;
+				}
+				if ($multilineItNext)
+				{
+					$multilineIt = 1;
+				}
+				else
+				{
+					$multilineIt = 0;
+					if ($colState==2)
+						{ plainOutput("</TD></TR><TR><TD>&nbsp;</TD><TD>\n"); }
+					else
+						{ plainOutput("</TD><TD>\n"); }
+				}
+			}
+		}
+		else
+		{
+			plainOutput("<LI>");
+		}
+		lineBreak();
+	}
+	elsif ($c eq "Xc")
+	{
+		if ($docListStyle eq "-tag")
+		{
+			plainOutput("</TD></TR><TR><TD>&nbsp;</TD><TD>\n");
+		}
+	}
+	elsif ($c eq "Bl")		# Begin list (mdoc)
+	{
+		push @docListStyles, $docListStyle;
+		if ($p[1] eq "-enum")
+		{
+			plainOutput("<OL>\n");
+			$docListStyle = $p[1];
+		}
+		elsif($p[1] eq "-bullet")
+		{
+			plainOutput("<UL>\n");
+			$docListStyle = $p[1];
+		}
+		else
+		{
+			$docListStyle = "-tag";
+			if ($p[2] eq "-width")
+			{
+				$tagWidth = width($p[3]);
+				if ($tagWidth < 6) { $tagWidth = 6; }
+			}
+			else
+			{
+				$tagWidth = 0;
+			}
+			$multilineIt = 0;
+		}
+	}
+	elsif ($c eq "El")		# End list
+	{
+		if ($docListStyle eq "-tag")
+		{
+			endRow();
+			setIndent(0);
+		}
+		elsif ($docListStyle eq "-bullet")
+		{
+			plainOutput("</UL>\n");
+		}
+		else
+		{
+			plainOutput("</OL>\n");
+		}
+		$docListStyle = pop @docListStyles;
+	}
+	elsif ($c eq "Os")
+	{
+		$right = $joined;
+	}
+	elsif ($c eq "Dd")
+	{
+		$left = $joined;
+	}
+	elsif ($c eq "Sx")		# See section
+	{
+		$id = $contents{"\U$joined"};
+		if ($id && $joined =~ m/^[A-Z]/)
+		{
+			outputLine("<A HREF=#$id>".&mdocStyle(@p[1..$#p])."</A>\n");
+		}
+		else
+		{
+			my $x = &mdocStyle(@p[1..$#p]);
+			$x =~ s/^ //;
+			outputLine($x."\n");
+		}
+	}
+	elsif (&mdocCallable($c))
+	{
+		my $x = &mdocStyle(@p);
+		$x =~ s/^ //;
+		outputLine($x."\n");
+	}
+	elsif ($c eq "Bx")
+	{
+		outputLine("<I>BSD $joined</I>\n");
+	}
+	elsif ($c eq "Ux")
+	{
+		outputLine("<I>Unix $joined</I>\n");
+	}
+	elsif ($c eq "At")
+	{
+		outputLine("<I>AT&T $joined</I>\n");
+	}
+	elsif ($c =~ m/[A-Z][a-z]/)		# Unsupported doc directive
+	{
+		outputLine("<BR>.$c $joined\n");
+	}
+	elsif ($c eq "")				# Empty line (eg. troff comment)
+	{
+		$doneLine = 0;
+	}
+	else						# Unsupported directive
+	{
+		# Unknown macros are ignored, and don't count as a line as far as trapLine goes
+		$doneLine = 0;
+		plainOutput("<!-- ignored unsupported tag .$c -->\n");
+	}
+}
+
+sub trapTP
+{
+	$lookaheadPtr = 0;
+	$body = lookahead();
+	if ($body =~ m/^\.TP/)
+	{
+		consume();
+		$trapLine = 1;	# restore TP trap
+		$doneLine = 0;	# don't count this line
+		plainOutput("<BR>\n");
+	}
+	else
+	{
+		plainOutput("</TD><TD valign=bottom>\n");
+		$colState = 1;
+	}
+	lineBreak();
+}
+
+sub trapHP
+{
+	$lookaheadPtr = 0;
+	$body = lookahead();
+	if ($body =~ m/^\.([TH]P)/)
+	{
+		consume();
+		# Restore appropriate type of trap
+		if ($1 eq "TP")
+		{
+			$trapLine = 1;
+			$doneLine = 0;	# don't count this line
+		}
+		else
+		{
+			$trapOnBreak = 1;
+		}
+		plainOutput("<BR>\n");
+	}
+	else
+	{
+		plainOutput("</TD></TR><TR valign=top><TD$width>&nbsp;</TD><TD>\n");
+		$colState = 1;
+	}
+	lineBreak();
+}
+
+sub newParagraph
+{
+	$indent = $_[0];
+	endRow();
+	startRow($indent);
+}
+
+sub startRow
+{
+	$indent = $_[0];
+	$indent = $prevailingIndent unless ($indent);
+	$prevailingIndent = $indent;
+	setIndent($indent);
+	plainOutput( "<TR valign=top>" );
+}
+
+# End an existing HP/TP/IP/RS row
+sub endRow
+{
+	if ($indent[$indentLevel] > 0)
+	{
+		lineBreak();
+		plainOutput( "</TD></TR>\n" );
+	}
+}
+
+# Called when we output a line break tag. Only needs to be called once if
+# calling plainOutput, but should call before and after if using outputLine.
+sub lineBreak
+{
+	$needBreak = 0;
+	$textSinceBreak = 0;
+}
+
+# Called to reset all indents and pending paragraphs (eg. at the start of
+# a new top level section).
+sub endParagraph
+{
+	++$indentLevel;
+	while ($indentLevel > 0)
+	{
+		--$indentLevel;
+		if ($indent[$indentLevel] > 0)
+		{
+			endRow();
+			setIndent(0);
+		}
+	}
+}
+
+# Interpolate a number register (possibly autoincrementing)
+sub numreg
+{
+	return 0 + $number{$_[0]};
+}
+
+# Evaluate a numeric expression
+sub evalnum
+{
+	$n = $_[0];
+	return "" if ($n eq "");
+	if ($n =~ m/i$/)	# inches
+	{
+		$n =~ s/i//;
+		$n *= 10;
+	}
+	return 0+$n;
+}
+
+sub setIndent
+{
+	$tsb = $textSinceBreak;
+	$indent = evalnum($_[0]);
+	if ($indent==0 && $_[0] !~ m/^0/)
+	{
+		$indent = 6;
+	}
+	plainOutput("<!-- setIndent $indent, indent[$indentLevel] = $indent[$indentLevel] -->\n") if ($debug);
+	if ($indent[$indentLevel] != $indent)
+	{
+		lineBreak();
+		if ($indent[$indentLevel] > 0)
+		{
+			plainOutput("<TR></TR>") unless ($noSpace);
+			plainOutput("</TABLE>");
+		}
+		if ($indent > 0)
+		{
+			endNoFill();
+			$border = "";
+			$border = " border=1" if ($debug>2);
+			#plainOutput("<P>") unless ($indent[$indentLevel] > 0);
+			plainOutput("<TABLE$border");
+			# Netscape bug, makes 2 cols same width? : plainOutput("<TABLE$border COLS=2");
+			# Overcome some of the vagaries of Netscape tables
+			plainOutput(" width=100%") if ($indentLevel>0);
+			if ($noSpace)
+			{
+				plainOutput(" cellpadding=0 cellspacing=0>\n");
+			}
+			else
+			{
+				plainOutput(" cellpadding=3>".($tsb ? "<!-- tsb: $tsb -->\n<TR></TR><TR></TR>\n" : "\n") );
+			}
+			#$width = " width=".($indent*5);	# causes text to be chopped if too big
+			$percent = $indent;
+			if ($indentLevel > 0)
+				{ $percent = $indent * 100 / (100-$indentLevel[0]); }
+			$width = " width=$percent%";
+		}
+		$indent[$indentLevel] = $indent;
+	}
+}
+
+# Process mdoc style macros recursively, as one of the macro arguments
+# may itself be the name of another macro to invoke.
+sub mdocStyle
+{
+	return "" unless @_;
+	my ($tag, @param) = @_;
+	my ($rest, $term);
+
+	# Don't format trailing punctuation
+	if ($param[$#param] =~ m/^[.,;:]$/)
+	{
+		$term = pop @param;
+	}
+	if ($param[$#param] =~ m/^[)\]]$/)
+	{
+		$term = (pop @param).$term;
+	}
+
+	if ($param[0] =~ m,\\\\,)
+	{
+		print STDERR "$tag: ",join(",", @param),"\n";
+	}
+	$rest = &mdocStyle(@param);
+	
+	if ($tag eq "Op")
+	{
+		$rest =~ s/ //;	# remove first space
+		return " \\fP[$rest]$term";
+	}
+	elsif ($tag eq "Xr")	# cross reference
+	{
+		my $p = shift @param;
+		my $url = $p;
+		if (@param==1)
+		{
+			$url .= ".".$param[0];
+			$rest = "(".$param[0].")";
+		}
+		else
+		{
+			$rest = &mdocStyle(@param);
+		}
+		if ($cmdLineMode)
+		{
+			return " <B>".$p."</B>".$rest.$term;
+		}
+		else
+		{
+			return " <A HREF=\"".$root."/".$url."\">".$p."</A>".$rest.$term;
+		}
+	}
+	elsif ($tag eq "Fl")
+	{
+		my ($sofar);
+		while (@param)
+		{
+			$f = shift @param;
+			if ($f eq "Ns") # no space
+			{
+				chop $sofar;
+			}
+			elsif (&mdocCallable($f))
+			{
+				unshift @param, $f;
+				return $sofar.&mdocStyle(@param).$term;
+			}
+			else
+			{
+				$sofar .= "-<B>$f</B> "
+			}
+		}
+		return $sofar.$term;
+	}
+	elsif ($tag eq "Pa" || $tag eq "Er" || $tag eq "Fn" || $tag eq "Dv")
+	{
+		return "\\fC$rest\\fP$term";
+	}
+	elsif ($tag eq "Ad" || $tag eq "Ar" || $tag eq "Em" || $tag eq "Fa" || $tag eq "St" ||
+		$tag eq "Ft" || $tag eq "Va" || $tag eq "Ev" || $tag eq "Tn" || $tag eq "%T")
+	{
+		return "\\fI$rest\\fP$term";
+	}
+	elsif ($tag eq "Nm")
+	{
+		$defaultNm = $param[0] unless ($defaultNm);
+		$rest = $defaultNm unless ($param[0]);
+		return "\\fB$rest\\fP$term";
+	}
+	elsif ($tag eq "Ic" || $tag eq "Cm" || $tag eq "Sy")
+	{
+		return "\\fB$rest\\fP$term";
+	}
+	elsif ($tag eq "Ta")		# Tab
+	{
+		# Tabs are used inconsistently so this is the best we can do. Columns won't line up. Tough.
+		return "&nbsp; &nbsp; &nbsp; $rest$term";
+	}
+	elsif ($tag eq "Ql")
+	{
+		$rest =~ s/ //;
+		return "`<TT>$rest</TT>'$term";
+	}
+	elsif ($tag eq "Dl")
+	{
+		return "<P>&nbsp; &nbsp; <TT>$rest</TT>$term<P>\n";
+	}
+	elsif ($tag =~ m/^[ABDEOPQS][qoc]$/)
+	{
+		$lq = "";
+		$rq = "";
+		if ($tag =~ m/^A/)
+			{ $lq = "&lt;"; $rq = "&gt;"; }
+		elsif ($tag =~ m/^B/)
+			{ $lq = "["; $rq = "]"; }
+		elsif ($tag =~ m/^D/)
+			{ $lq = "\""; $rq = "\""; }
+		elsif ($tag =~ m/^P/)
+			{ $lq = "("; $rq = ")"; }
+		elsif ($tag =~ m/^Q/)
+			{ $lq = "\""; $rq = "\""; }
+		elsif ($tag =~ m/^S/)
+			{ $lq = "\\'"; $rq = "\\'"; }
+		elsif ($tag =~ m/^O/)
+			{ $lq = "["; $rq = "]"; }
+		if ($tag =~ m/^.o/)
+			{ $rq = ""; }
+		if ($tag =~ m/^.c/)
+			{ $lq = ""; }
+		$rest =~ s/ //;
+		return $lq.$rest.$rq.$term ;
+	}
+	elsif (&mdocCallable($tag))	# but not in list above...
+	{
+		return $rest.$term;
+	}
+	elsif ($tag =~ m/^[.,;:()\[\]]$/)	# punctuation
+	{
+		return $tag.$rest.$term;
+	}
+	elsif ($tag eq "Ns")
+	{
+		return $rest.$term;
+	}
+	else
+	{
+		return " ".$tag.$rest.$term;
+	}
+}
+
+# Determine if a macro is mdoc parseable/callable
+sub mdocCallable
+{
+	return ($_[0] =~ m/^(Op|Fl|Pa|Er|Fn|Ns|No|Ad|Ar|Xr|Em|Fa|Ft|St|Ic|Cm|Va|Sy|Nm|Li|Dv|Ev|Tn|Pf|Dl|%T|Ta|Ql|[ABDEOPQS][qoc])$/);
+}
+
+
+# Estimate the output width of a string
+sub width
+{
+	local($word) = $_[0];
+	$word =~ s,<[/A-Z][^>]*>,,g;		# remove any html tags
+	$word =~ s/^\.\S+\s//;
+	$word =~ s/\\..//g;
+	$x = length($word);
+	$word =~ s/[ ()|.,!;:"']//g;	# width of punctuation is about half a character
+	return ($x + length($word)) / 2;
+}
+
+# Process a tbl table (between TS/TE tags)
+sub processTable
+{
+	if ($troffTable == "1")
+	{
+		@troffRowDefs = ();
+		@tableRows = ();
+		$hadUnderscore = 0;
+		while(1)
+		{
+			outputOrigLine();
+			if (m/;\s*$/)
+			{
+				$troffSeparator = quotemeta($1) if (m/tab\s*\((.)\)/);
+			}
+			else
+			{
+				s/\.\s*$//;
+				s/\t/ /g;
+				s/^[^lrcan^t]*//;	# remove any 'modifiers' coming before tag
+				# delimit on tags excluding s (viewed as modifier of previous column)
+				s/([lrcan^t])/\t$1/g;
+				s/^\t//;
+				push @troffRowDefs, $_;
+				last if ($origLine =~ m/\.\s*$/);
+			}
+			$_ = getLine();
+			preProcessLine();
+		}
+		$troffTable = 2;
+		return;
+	}
+
+	s/$troffSeparator/\t/g;
+	if ($_ eq ".TE")
+	{
+		endTblRow();
+		flushTable();
+		$troffTable = 0;
+		plainOutput("</TABLE></BLOCKQUOTE>\n");
+	}
+	elsif ($_ eq ".T&")
+	{
+		endTblRow();
+		flushTable();
+		$troffTable = 1;
+	}
+	elsif (m/[_=]/ && m/^[_=\t]*$/ && $troffCol==0)
+	{
+		if (m/^[_=]$/)
+		{
+			flushTable();
+			plainOutput("<TR></TR><TR></TR>\n");
+			$hadUnderscore = 1;
+		}
+		elsif ($troffCol==0 && @troffRowDefs)
+		{
+			# Don't output a row, but this counts as a row as far as row defs go
+			$rowDef = shift @troffRowDefs;
+			@troffColDefs = split(/\t/, $rowDef);
+		}
+	}
+	elsif (m/^\.sp/ && $troffCol==0 && !$hadUnderscore)
+	{
+		flushTable();
+		plainOutput("<TR></TR><TR></TR>\n");
+	}
+	elsif ($_ eq ".br" && $troffMultiline)
+	{
+		$rowref->[$troffCol] .= "<BR>\n";
+	}
+	elsif ($_ !~ m/^\./)
+	{
+		$rowref = $tableRows[$#tableRows];	# reference to current row (last row in array)
+		if ($troffCol==0 && @troffRowDefs)
+		{
+			$rowDef = shift @troffRowDefs;
+			if ($rowDef =~ m/^[_=]/)
+			{
+				$xxx = $_;
+				flushTable();
+				plainOutput("<TR></TR><TR></TR>\n");
+				$hadUnderscore = 1;
+				$_ = $xxx;
+				$rowDef = shift @troffRowDefs;
+			}
+			@troffColDefs = split(/\t/, $rowDef);
+		}
+
+		if ($troffCol == 0 && !$troffMultiline)
+		{
+			$rowref = [];
+			push(@tableRows, $rowref);
+			#plainOutput("<TR valign=top>");
+		}
+
+		#{
+		if (m/T}/)
+		{
+			$troffMultiline = 0;
+		}
+		if ($troffMultiline)
+		{
+			$rowref->[$troffCol] .= "$_\n";
+			return;
+		}
+
+		@columns = split(/\t/, $_);
+		plainOutput("<!-- Adding (".join(",", @columns)."), type (".join(",", @troffColDefs).") -->\n") if ($debug);
+		while ($troffCol <= $#troffColDefs && @columns > 0)
+		{
+			$def = $troffColDefs[$troffCol];
+			$col = shift @columns;
+			$col =~ s/\s*$//;
+			$align = "";
+			$col = "\\^" if ($col eq "" && $def =~ m/\^/);
+			$col = "&nbsp;" if ($col eq "");
+			$style1 = "";
+			$style2 = "";
+			if ($col ne "\\^")
+			{
+				if ($def =~ m/[bB]/ || $def =~ m/f3/)
+					{ $style1 = "\\fB"; $style2 = "\\fP"; }
+				if ($def =~ m/I/ || $def =~ m/f2/)
+					{ $style1 = "\\fI"; $style2 = "\\fP"; }
+			}
+			if ($def =~ m/c/) { $align = " align=center"; }
+			if ($def =~ m/[rn]/) { $align = " align=right"; }
+			$span = $def;
+			$span =~ s/[^s]//g;
+			if ($span) { $align.= " colspan=".(length($span)+1); }
+
+			#{
+			if ($col =~ m/T}/)
+			{
+				$rowref->[$troffCol] .= "$style2</TD>";
+				++$troffCol;
+			}
+			elsif ($col =~ m/T{/) #}
+			{
+				$col =~ s/T{//; #}
+				$rowref->[$troffCol] = "<TD$align>$style1$col";
+				$troffMultiline = 1;
+			}
+			else
+			{
+				$rowref->[$troffCol] = "<TD$align>$style1$col$style2</TD>";
+				++$troffCol;
+			}
+		}
+
+		endTblRow() unless ($troffMultiline);
+	}
+}
+
+sub endTblRow
+{
+	return if ($troffCol == 0);
+	while ($troffCol <= $#troffColDefs)
+	{
+		$rowref->[$troffCol] = "<TD>&nbsp;</TD>";
+		#print OUT "<TD>&nbsp;</TD>";
+		++$troffCol;
+	}
+	$troffCol = 0;
+	#print OUT "</TR>\n"
+}
+
+sub flushTable
+{
+	plainOutput("<!-- flushTable $#tableRows rows -->\n") if ($debug);
+
+	# Treat rows with first cell blank or with more than one vertically
+	# spanned row as a continuation of the previous line.
+	# Note this is frequently a useful heuristic but isn't foolproof.
+	for($r=0; $r<$#tableRows; ++$r)
+	{
+		$vspans = 0;
+		for ($c=0; $c<=$#{$tableRows[$r+1]}; ++$c)
+			{++$vspans if ($tableRows[$r+1][$c] =~ m,<TD.*?>\\\^</TD>,);}
+		if ((($vspans>1) || ($tableRows[$r+1][0] =~ m,<TD.*?>&nbsp;</TD>,)) &&
+			$#{$tableRows[$r]} == $#{$tableRows[$r+1]}  && 0)
+		{
+			if ($debug)
+			{
+				plainOutput("<!-- merging row $r+1 into previous -->\n");
+				plainOutput("<!-- row $r: (".join(",", @{$tableRows[$r]}).") -->\n");
+				plainOutput("<!-- row $r+1: (".join(",", @{$tableRows[$r+1]}).") -->\n");
+			}
+			for ($c=0; $c<=$#{$tableRows[$r]}; ++$c)
+			{
+				$tableRows[$r][$c] .= $tableRows[$r+1][$c];
+				$tableRows[$r][$c] =~ s,\\\^,,g;	# merging is stronger than spanning!
+				$tableRows[$r][$c] =~ s,</TD><TD.*?>,<BR>,;
+			}
+			@tableRows = (@tableRows[0..$r], @tableRows[$r+2 .. $#tableRows]);
+			--$r;	# process again
+		}
+	}
+
+	# Turn \^ vertical span requests into rowspan tags
+	for($r=0; $r<$#tableRows; ++$r)
+	{
+		for ($c=0; $c<=$#{$tableRows[$r]}; ++$c)
+		{
+			$r2 = $r+1;
+			while ( $r2<=$#tableRows && ($tableRows[$r2][$c] =~ m,<TD.*?>\\\^</TD>,) )
+			{
+				++$r2;
+			}
+			$rs = $r2-$r;
+			if ($rs > 1)
+			{
+				plainOutput("<!-- spanning from $r,$c -->\n") if ($debug);
+				$tableRows[$r][$c] =~ s/<TD/<TD rowspan=$rs/;
+			}
+		}
+	}
+
+	# As tbl and html differ in whether they expect spanned cells to be
+	# supplied, remove any cells that are 'rowspanned into'.
+	for($r=0; $r<=$#tableRows; ++$r)
+	{
+		for ($c=$#{$tableRows[$r]}; $c>=0; --$c)
+		{
+			if ($tableRows[$r][$c] =~ m/<TD rowspan=(\d+)/)
+			{
+				for ($r2=$r+1; $r2<$r+$1; ++$r2)
+				{
+					$rowref = $tableRows[$r2];
+					plainOutput("<!-- removing $r2,$c: ".$rowref->[$c]." -->\n") if ($debug);
+					@$rowref = (@{$rowref}[0..$c-1], @{$rowref}[$c+1..$#$rowref]);
+				}
+			}
+		}
+	}
+
+	# Finally, output the cells that are left
+	for($r=0; $r<=$#tableRows; ++$r)
+	{
+		plainOutput("<TR valign=top>\n");
+		for ($c=0; $c <= $#{$tableRows[$r]}; ++$c)
+		{
+			outputLine($tableRows[$r][$c]);
+		}
+		plainOutput("</TR>\n");
+	}
+	@tableRows = ();
+	$troffCol = 0;
+	plainOutput("<!-- flushTable done -->\n") if ($debug);
+}
+
+
+# Use these for all font changes, including .ft, .ps, .B, .BI, .SM etc.
+# Need to add a mechanism to stack up these changes so tags match: <X> <Y> ... </Y> </X> etc.
+
+sub pushStyle
+{
+	$result = "";
+	$type = $_[0];
+	$tag = $_[1];
+	print OUT "<!-- pushStyle $type($tag) [".join(",", @styleStack)."] " if ($debug>1);
+	@oldItems = ();
+	if (grep(m/^$type/, @styleStack))
+	{
+		print OUT "undoing up to old $type " if ($debug>1);
+		while (@styleStack)
+		{
+			# search back, undoing intervening tags in reverse order
+			$oldItem = pop @styleStack;
+			($oldTag) = ($oldItem =~ m/^.(\S+)/);
+			$result .= "</$oldTag>";
+			if (substr($oldItem,0,1) eq $type)
+			{
+				print OUT "found $oldItem " if ($debug>1);
+				while (@oldItems)
+				{
+					# restore the intermediates again
+					$oldItem = shift @oldItems;
+					push(@styleStack, $oldItem);
+					$result .= "<".substr($oldItem,1).">";
+				}
+				last;
+			}
+			else
+			{
+				unshift(@oldItems, $oldItem);
+			}
+		}
+	}
+	print OUT "oldItems=(@oldItems) " if ($debug>1);
+	push(@styleStack, @oldItems);	# if we didn't find anything of type
+	if ($tag)
+	{
+		$result .= "<$tag>";
+		push(@styleStack, $type.$tag);
+	}
+	print OUT "-> '$result' -->\n" if ($debug>1);
+	return $result;
+}
+
+sub resetStyles
+{
+	if (@styleStack)
+	{
+		print OUT "<!-- resetStyles [".join(",", @styleStack)."] -->\n";
+		print OUT "<HR> resetStyles [".join(",", @styleStack)."] <HR>\n" if ($debug);
+	}
+	while (@styleStack)
+	{
+		$oldItem = pop @styleStack;
+		($oldTag) = ($oldItem =~ m/^.(\S+)/);
+		print OUT "</$oldTag>";
+	}
+	$currentSize = 0;
+	$currentShift = 0;
+}
+
+sub blockquote
+{
+	print OUT "<BLOCKQUOTE>\n";
+	++$blockquote;
+}
+
+sub endBlockquote
+{
+	resetStyles();
+	while ($blockquote > 0)
+	{
+		print OUT "</BLOCKQUOTE>\n";
+		--$blockquote;
+	}
+}
+
+sub indent
+{
+	plainOutput(pushStyle("I", "TABLE"));
+	$width = $_[0];
+	$width = " width=$width%" if ($width);
+	plainOutput("<TR><TD$width>&nbsp;</TD><TD>\n");
+}
+
+sub outdent
+{
+	plainOutput("</TD></TR>\n");
+	plainOutput(pushStyle("I"));
+}
+
+sub inlineStyle
+{
+	$_[0] =~ m/^(.)(.*)$/;
+	if ($1 eq "f")
+		{ fontChange($2); }
+	elsif ($1 eq "s" && ! $noFill)
+		{ sizeChange($2); }
+	else
+		{ superSub($1); }
+}
+
+sub fontChange
+{
+	$fnt = $_[0];
+	$fnt =~ s/^\(//;
+
+	if ($fnt eq "P" || $fnt eq "R" || $fnt eq "1" || $fnt eq "")
+		{ $font = ""; }
+	elsif ($fnt eq "B" || $fnt eq "3")
+		{ $font = "B"; }
+	elsif ($fnt eq "I" || $fnt eq "2")
+		{ $font = "I"; }
+	else
+		{ $font = "TT"; }
+	return pushStyle("F", $font);
+}
+
+sub sizeChange
+{
+	$size= $_[0];
+	if ($size =~ m/^[+-]/)
+		{ $currentSize += $size; }
+	else
+		{ $currentSize = $size-10; }
+	$currentSize = 0 if (! $size);
+
+	$sz = $currentSize;
+	$sz = -2 if ($sz < -2);
+	$sz = 2 if ($sz > 2);
+
+	if ($currentSize eq "0")
+		{ $size = ""; }
+	else
+		{ $size = "FONT size=$sz"; }
+	return pushStyle("S", $size);
+}
+
+sub superSub
+{
+	$sub = $_[0];
+	++$currentShift if ($sub eq "u");
+	--$currentShift if ($sub eq "d");
+	$tag = "";
+	$tag = "SUP" if ($currentShift > 0);
+	$tag = "SUB" if ($currentShift < 0);
+	return pushStyle("D", $tag);
+}
+
+sub startNoFill
+{
+	print OUT "<PRE>\n" unless($noFill);
+	$noFill = 1;
+}
+
+sub endNoFill
+{
+	print OUT "</PRE>\n" if ($noFill);
+	$noFill = 0;
+}
+
+
+sub processEqns
+{
+	if ($eqnMode==2 && $_[0] =~ m/^\.EN/)
+	{
+		$eqnMode = 0;
+		outputLine(flushEqn());
+		plainOutput("\n");
+		return;
+	}
+	$eqnBuffer .= $_[0]." ";
+}
+
+sub processEqnd
+{
+	processEqns(@_);
+	return flushEqn();
+}
+
+sub flushEqn
+{
+	@p = grep($_ !~ m/^ *$/, split(/("[^"]*"|\s+|[{}~^])/, $eqnBuffer) );
+	$eqnBuffer = "";
+	#return "[".join(',', @p)." -> ".&doEqn(@p)."]\n";
+	$res = &doEqn(@p);
+	#$res =~ s,\\\((..),$special{$1}||"\\($1",ge;
+	#$res =~ s,<,&lt;,g;
+	#$res =~ s,>,&gt;,g;
+	return $res;
+}
+
+sub doEqn
+{
+	my @p = @_;
+	my $result = "";
+	my $res;
+	my $c;
+	while (@p)
+	{
+		($res, @p) = doEqn1(@p);
+		$result .= $res;
+	}
+	return $result;
+}
+
+sub doEqn1
+{
+	my @p = @_;
+	my $res = "";
+	my $c;
+
+	$c = shift @p;
+	if ($eqndefs{$c})
+	{
+		@x = split(/\0/, $eqndefs{$c});
+		unshift @p, @x;
+		$c = shift @p;
+	}
+	if ($c =~ m/^"(.*)"$/)
+	{
+		$res = $1;
+	}
+	elsif ($c eq "delim")
+	{
+		$c = shift @p;
+		if ($c eq "off")
+		{
+			$eqnStart = "";
+			$eqnEnd = "";
+		}
+		else
+		{
+			$c =~ m/^(.)(.)/;
+			$eqnStart = quotemeta($1);
+			$eqnEnd = quotemeta($2);
+		}
+	}
+	elsif ($c eq "define" || $c eq "tdefine" || $c eq "ndefine")
+	{
+		$t = shift @p;
+		$d = shift @p;
+		$def = "";
+		if (length($d) != 1)
+		{
+			$def = $d;
+			$def =~ s/^.(.*)./\1/;
+		}
+		else
+		{
+			while (@p && $p[0] ne $d)
+			{
+				$def .= shift @p;
+				$def .= "\0";
+			}
+			chop $def;
+			shift @p;
+		}
+		$eqndefs{$t} = $def unless ($c eq "ndefine");
+	}
+	elsif ($c eq "{")
+	{
+		my $level = 1;
+		my $i;
+		for ($i=0; $i<=$#p; ++$i)
+		{
+			++$level if ($p[$i] eq "{");
+			--$level if ($p[$i] eq "}");
+			last if ($level==0);
+		}
+		$res = doEqn(@p[0..$i-1]);
+		@p = @p[$i+1..$#p];
+	}
+	elsif ($c eq "sup")
+	{
+		($c,@p) = &doEqn1(@p);
+		$res = "\\u$c\\d";
+	}
+	elsif ($c eq "to")
+	{
+		($c,@p) = &doEqn1(@p);
+		$res = "\\u$c\\d ";
+	}
+	elsif ($c eq "sub" || $c eq "from")
+	{
+		($c,@p) = &doEqn1(@p);
+		$res = "\\d$c\\u";
+	}
+	elsif ($c eq "matrix")
+	{
+		($c,@p) = &doEqn1(@p);
+		$res = "matrix ( $c )";
+	}
+	elsif ($c eq "bold")
+	{
+		($c,@p) = &doEqn1(@p);
+		$res = "\\fB$c\\fP";
+	}
+	elsif ($c eq "italic")
+	{
+		($c,@p) = &doEqn1(@p);
+		$res = "\\fI$c\\fP";
+	}
+	elsif ($c eq "roman")
+	{
+	}
+	elsif ($c eq "font" || $c eq "gfont" || $c eq "size" || $c eq "gsize")
+	{
+		shift @p;
+	}
+	elsif ($c eq "mark" || $c eq "lineup")
+	{
+	}
+	elsif ($c eq "~" || $c eq "^")
+	{
+		$res = " ";
+	}
+	elsif ($c eq "over")
+	{
+		$res = " / ";
+	}
+	elsif ($c eq "half")
+	{
+		$res = "\\(12";
+	}
+	elsif ($c eq "prime")
+	{
+		$res = "\\' ";
+	}
+	elsif ($c eq "dot")
+	{
+		$res = "\\u.\\d ";
+	}
+	elsif ($c eq "dotdot")
+	{
+		$res = "\\u..\\d ";
+	}
+	elsif ($c eq "tilde")
+	{
+		$res = "\\u~\\d ";
+	}
+	elsif ($c eq "hat")
+	{
+		$res = "\\u^\\d ";
+	}
+	elsif ($c eq "bar" || $c eq "vec")
+	{
+		$res = "\\(rn ";
+	}
+	elsif ($c eq "under")
+	{
+		$res = "_ ";
+	}
+	elsif ( $c eq "sqrt" || $c eq "lim" || $c eq "sum" || $c eq "pile" || $c eq "lpile" ||
+			$c eq "rpile" || $c eq "cpile" || $c eq "int" || $c eq "prod" )
+	{
+		$res = " $c ";
+	}
+	elsif ($c eq "cdot")
+	{
+		$res = " . ";
+	}
+	elsif ($c eq "inf")
+	{
+		$res = "\\(if";
+	}
+	elsif ($c eq "above" || $c eq "lcol" || $c eq "ccol")
+	{
+		$res = " ";
+	}
+	elsif ($c eq "sin" || $c eq "cos" || $c eq "tan" || $c eq "log" || $c eq "ln" )
+	{
+		$res = " $c ";
+	}
+	elsif ($c eq "left" || $c eq "right" || $c eq "nothing")
+	{
+	}
+	elsif ($c =~ m/^[A-Za-z]/)
+	{
+		$res = "\\fI$c\\fP";
+	}
+	else
+	{
+		$res = $c;
+	}
+
+	return ($res, @p);
+}
+
+##### Search manpath and initialise special char array #####
+
+sub initialise
+{
+	# Parse the macro definition file for section names
+	if (open(MACRO, "/usr/lib/tmac/tmac.an") ||
+		open(MACRO, "/usr/lib/tmac/an") ||
+		open(MACRO, "/usr/lib/groff/tmac/tmac.an") ||
+		open(MACRO, "/usr/share/tmac/tmac.an") ||
+		open(MACRO, "/usr/share/groff/tmac/tmac.an") )
+	{
+		while (<MACRO>)
+		{
+			chop;
+			if (m/\$2'([0-9a-zA-Z]+)' .ds ]D (.*)$/)
+			{
+				$sn = $2;
+				unless ($sn =~ m/[a-z]/)
+				{
+					$sn = "\u\L$sn";
+					$sn =~ s/ (.)/ \u\1/g;
+				}
+				$sectionName{"\L$1"} = $sn;
+			}
+			if (m/\$1'([^']+)' .ds Tx "?(.*)$/)
+			{
+				$title{"$1"} = $2;
+			}
+			if (m/^.ds ]W (.*)$/)
+			{
+				$osver = $1;
+			}
+		}
+	}
+	else
+	{
+		print STDERR "Failed to read tmac.an definitions\n" unless ($cgiMode);
+	}
+	if (open(MACRO, "/usr/lib/tmac/tz.map"))
+	{
+		while (<MACRO>)
+		{
+			chop;
+			if (m/\$1'([^']+)' .ds Tz "?(.*)$/)
+			{
+				$title{"$1"} = $2;
+			}
+		}
+	}
+
+	# Prevent redefinition of macros that have special meaning to us
+	$reservedMacros = '^(SH|SS|Sh|Ss)$';
+
+	# Predefine special number registers
+	$number{'.l'} = 75;
+
+	# String variables defined by man package
+	$vars{'lq'} = '&#147;';
+	$vars{'rq'} = '&#148;';
+	$vars{'R'} = '\\(rg';
+	$vars{'S'} = '\\s0';
+
+	# String variables defined by mdoc package
+	$vars{'Le'} = '\\(<=';
+	$vars{'<='} = '\\(<=';
+	$vars{'Ge'} = '\\(>=';
+	$vars{'Lt'} = '<';
+	$vars{'Gt'} = '>';
+	$vars{'Ne'} = '\\(!=';
+	$vars{'>='} = '\\(>=';
+	$vars{'q'} = '&#34;';	# see also special case in preProcessLine
+	$vars{'Lq'} = '&#147;';
+	$vars{'Rq'} = '&#148;';
+	$vars{'ua'} = '\\(ua';
+	$vars{'ga'} = '\\(ga';
+	$vars{'Pi'} = '\\(*p';
+	$vars{'Pm'} = '\\(+-';
+	$vars{'Na'} = 'NaN';
+	$vars{'If'} = '\\(if';
+	$vars{'Ba'} = '|';
+
+	# String variables defined by ms package (access to accented characters)
+	$vars{'bu'} = '&#187;';
+	$vars{'66'} = '&#147;';
+	$vars{'99'} = '&#148;';
+	$vars{'*!'} = '&#161;';
+	$vars{'ct'} = '&#162;';
+	$vars{'po'} = '&#163;';
+	$vars{'gc'} = '&#164;';
+	$vars{'ye'} = '&#165;';
+	#$vars{'??'} = '&#166;';
+	$vars{'sc'} = '&#167;';
+	$vars{'*:'} = '&#168;';
+	$vars{'co'} = '&#169;';
+	$vars{'_a'} = '&#170;';
+	$vars{'<<'} = '&#171;';
+	$vars{'no'} = '&#172;';
+	$vars{'hy'} = '&#173;';
+	$vars{'rg'} = '&#174;';
+	$vars{'ba'} = '&#175;';
+	$vars{'de'} = '&#176;';
+	$vars{'pm'} = '&#177;';
+	#$vars{'??'} = '&#178;';
+	#$vars{'??'} = '&#179;';
+	$vars{'aa'} = '&#180;';
+	$vars{'mu'} = '&#181;';
+	$vars{'pg'} = '&#182;';
+	$vars{'c.'} = '&#183;';
+	$vars{'cd'} = '&#184;';
+	#$vars{'??'} = '&#185;';
+	$vars{'_o'} = '&#186;';
+	$vars{'>>'} = '&#187;';
+	$vars{'14'} = '&#188;';
+	$vars{'12'} = '&#189;';
+	#$vars{'??'} = '&#190;';
+	$vars{'*?'} = '&#191;';
+	$vars{'`A'} = '&#192;';
+	$vars{"'A"} = '&#193;';
+	$vars{'^A'} = '&#194;';
+	$vars{'~A'} = '&#195;';
+	$vars{':A'} = '&#196;';
+	$vars{'oA'} = '&#197;';
+	$vars{'AE'} = '&#198;';
+	$vars{',C'} = '&#199;';
+	$vars{'`E'} = '&#200;';
+	$vars{"'E"} = '&#201;';
+	$vars{'^E'} = '&#202;';
+	$vars{':E'} = '&#203;';
+	$vars{'`I'} = '&#204;';
+	$vars{"'I"} = '&#205;';
+	$vars{'^I'} = '&#206;';
+	$vars{':I'} = '&#207;';
+	$vars{'-D'} = '&#208;';
+	$vars{'~N'} = '&#209;';
+	$vars{'`O'} = '&#210;';
+	$vars{"'O"} = '&#211;';
+	$vars{'^O'} = '&#212;';
+	$vars{'~O'} = '&#213;';
+	$vars{':O'} = '&#214;';
+	#$vars{'mu'} = '&#215;';
+	$vars{'NU'} = '&#216;';
+	$vars{'`U'} = '&#217;';
+	$vars{"'U"} = '&#218;';
+	$vars{'^U'} = '&#219;';
+	$vars{':U'} = '&#220;';
+	#$vars{'??'} = '&#221;';
+	$vars{'Th'} = '&#222;';
+	$vars{'*b'} = '&#223;';
+	$vars{'`a'} = '&#224;';
+	$vars{"'a"} = '&#225;';
+	$vars{'^a'} = '&#226;';
+	$vars{'~a'} = '&#227;';
+	$vars{':a'} = '&#228;';
+	$vars{'oa'} = '&#229;';
+	$vars{'ae'} = '&#230;';
+	$vars{',c'} = '&#231;';
+	$vars{'`e'} = '&#232;';
+	$vars{"'e"} = '&#233;';
+	$vars{'^e'} = '&#234;';
+	$vars{':e'} = '&#235;';
+	$vars{'`i'} = '&#236;';
+	$vars{"'i"} = '&#237;';
+	$vars{'^i'} = '&#238;';
+	$vars{':i'} = '&#239;';
+	#$vars{'??'} = '&#240;';
+	$vars{'~n'} = '&#241;';
+	$vars{'`o'} = '&#242;';
+	$vars{"'o"} = '&#243;';
+	$vars{'^o'} = '&#244;';
+	$vars{'~o'} = '&#245;';
+	$vars{':o'} = '&#246;';
+	$vars{'di'} = '&#247;';
+	$vars{'nu'} = '&#248;';
+	$vars{'`u'} = '&#249;';
+	$vars{"'u"} = '&#250;';
+	$vars{'^u'} = '&#251;';
+	$vars{':u'} = '&#252;';
+	#$vars{'??'} = '&#253;';
+	$vars{'th'} = '&#254;';
+	$vars{':y'} = '&#255;';
+
+	# troff special characters and their closest equivalent
+
+	$special{'em'} = '&#151;';
+	$special{'hy'} = '-';
+	$special{'\-'} = '&#150;';	# was -
+	$special{'bu'} = 'o';
+	$special{'sq'} = '[]';
+	$special{'ru'} = '_';
+	$special{'14'} = '&#188;';
+	$special{'12'} = '&#189;';
+	$special{'34'} = '&#190;';
+	$special{'fi'} = 'fi';
+	$special{'fl'} = 'fl';
+	$special{'ff'} = 'ff';
+	$special{'Fi'} = 'ffi';
+	$special{'Fl'} = 'ffl';
+	$special{'de'} = '&#176;';
+	$special{'dg'} = '&#134;';	# was 182, para symbol
+	$special{'fm'} = "\\'";
+	$special{'ct'} = '&#162;';
+	$special{'rg'} = '&#174;';
+	$special{'co'} = '&#169;';
+	$special{'pl'} = '+';
+	$special{'mi'} = '-';
+	$special{'eq'} = '=';
+	$special{'**'} = '*';
+	$special{'sc'} = '&#167;';
+	$special{'aa'} = '&#180;';	# was '
+	$special{'ga'} = '&#96;';	# was `
+	$special{'ul'} = '_';
+	$special{'sl'} = '/';
+	$special{'*a'} = 'a';
+	$special{'*b'} = '&#223;';
+	$special{'*g'} = 'y';
+	$special{'*d'} = 'd';
+	$special{'*e'} = 'e';
+	$special{'*z'} = 'z';
+	$special{'*y'} = 'n';
+	$special{'*h'} = 'th';
+	$special{'*i'} = 'i';
+	$special{'*k'} = 'k';
+	$special{'*l'} = 'l';
+	$special{'*m'} = '&#181;';
+	$special{'*n'} = 'v';
+	$special{'*c'} = '3';
+	$special{'*o'} = 'o';
+	$special{'*p'} = 'pi';
+	$special{'*r'} = 'p';
+	$special{'*s'} = 's';
+	$special{'*t'} = 't';
+	$special{'*u'} = 'u';
+	$special{'*f'} = 'ph';
+	$special{'*x'} = 'x';
+	$special{'*q'} = 'ps';
+	$special{'*w'} = 'o';
+	$special{'*A'} = 'A';
+	$special{'*B'} = 'B';
+	$special{'*G'} = '|\\u_\\d';
+	$special{'*D'} = '/&#92;';
+	$special{'*E'} = 'E';
+	$special{'*Z'} = 'Z';
+	$special{'*Y'} = 'H';
+	$special{'*H'} = 'TH';
+	$special{'*I'} = 'I';
+	$special{'*K'} = 'K';
+	$special{'*L'} = 'L';
+	$special{'*M'} = 'M';
+	$special{'*N'} = 'N';
+	$special{'*C'} = 'Z';
+	$special{'*O'} = 'O';
+	$special{'*P'} = '||';
+	$special{'*R'} = 'P';
+	$special{'*S'} = 'S';
+	$special{'*T'} = 'T';
+	$special{'*U'} = 'Y';
+	$special{'*F'} = 'PH';
+	$special{'*X'} = 'X';
+	$special{'*Q'} = 'PS';
+	$special{'*W'} = 'O';
+	$special{'ts'} = 's';
+	$special{'sr'} = 'v/';
+	$special{'rn'} = '\\u&#150;\\d';	# was 175
+	$special{'>='} = '&gt;=';
+	$special{'<='} = '&lt;=';
+	$special{'=='} = '==';
+	$special{'~='} = '~=';
+	$special{'ap'} = '&#126;';	# was ~
+	$special{'!='} = '!=';
+	$special{'->'} = '-&gt;';
+	$special{'<-'} = '&lt;-';
+	$special{'ua'} = '^';
+	$special{'da'} = 'v';
+	$special{'mu'} = '&#215;';
+	$special{'di'} = '&#247;';
+	$special{'+-'} = '&#177;';
+	$special{'cu'} = 'U';
+	$special{'ca'} = '^';
+	$special{'sb'} = '(';
+	$special{'sp'} = ')';
+	$special{'ib'} = '(=';
+	$special{'ip'} = '=)';
+	$special{'if'} = 'oo';
+	$special{'pd'} = '6';
+	$special{'gr'} = 'V';
+	$special{'no'} = '&#172;';
+	$special{'is'} = 'I';
+	$special{'pt'} = '~';
+	$special{'es'} = '&#216;';
+	$special{'mo'} = 'e';
+	$special{'br'} = '|';
+	$special{'dd'} = '&#135;';	# was 165, yen
+	$special{'rh'} = '=&gt;';
+	$special{'lh'} = '&lt;=';
+	$special{'or'} = '|';
+	$special{'ci'} = 'O';
+	$special{'lt'} = '(';
+	$special{'lb'} = '(';
+	$special{'rt'} = ')';
+	$special{'rb'} = ')';
+	$special{'lk'} = '|';
+	$special{'rk'} = '|';
+	$special{'bv'} = '|';
+	$special{'lf'} = '|';
+	$special{'rf'} = '|';
+	$special{'lc'} = '|';
+	$special{'rc'} = '|';
+
+	# Not true troff characters but very common typos
+	$special{'cp'} = '&#169;';
+	$special{'tm'} = '&#174;';
+	$special{'en'} = '-';
+
+	# Build a list of directories containing man pages
+	@manpath = ();
+	if (open(MPC, "/etc/manpath.config") || open(MPC, "/etc/man.config"))
+	{
+		while (<MPC>)
+		{
+			if (m/^(MANDB_MAP|MANPATH)\s+(\S+)/)
+			{
+				push(@manpath, $2);
+			}
+		}
+	}
+	@manpath = split(/:/, $ENV{'MANPATH'}) unless (@manpath);
+	@manpath = ("/usr/man") unless (@manpath);
+}
+
+# Search through @manpath and construct @mandirs (non-empty subsections)
+sub loadManDirs
+{
+	return if (@mandirs);
+	print STDERR "Searching ",join(":", @manpath)," for mandirs\n" unless($cgiMode);
+	foreach $tld (@manpath)
+	{
+		$tld =~ m/^(.*)$/;
+		$tld = $1;	# untaint manpath
+		if (opendir(DIR, $tld))
+		{
+			# foreach $d (<$tld/man[0-9a-z]*>)
+			foreach $d (sort readdir(DIR))
+			{
+				if ($d =~ m/^man\w/ && -d "$tld/$d")
+				{
+					push (@mandirs, "$tld/$d");
+				}
+			}
+			closedir DIR;
+		}
+	}
+}
+
+##### Utility to search manpath for a given command #####
+
+sub findPage
+{
+	$request = $_[0];
+	$request =~ s,^/,,;
+	@multipleMatches = ();
+
+	$file = $_[0];
+	return $file if (-f $file || -f "$file.gz" || -f "$file.bz2");
+
+	# Search the path for the requested man page, which may be of the form:
+	# "/usr/man/man1/ls.1", "ls.1" or "ls".
+	($page,$sect) = ($request =~ m/^(.+)\.([^.]+)$/);
+	$sect = "\L$sect";
+
+	# Search the specified section first (if specified)
+	if ($sect)
+	{
+		foreach $md (@manpath)
+		{
+			$dir = $md;
+			$file = "$dir/man$sect/$page.$sect";
+			push(@multipleMatches, $file) if (-f $file || -f "$file.gz" || -f "$file.bz2");
+		}
+	}
+	else
+	{
+		$page = $request;
+	}
+	if (@multipleMatches == 1)
+	{
+		return pop @multipleMatches;
+	}
+
+	# If not found need to search through each directory
+	loadManDirs();
+	foreach $dir (@mandirs)
+	{
+		($s) = ($dir =~ m/man([0-9A-Za-z]+)$/);
+		$file = "$dir/$page.$s";
+		push(@multipleMatches, $file) if (-f $file || -f "$file.gz" || -f "$file.bz2");
+		$file = "$dir/$request";
+		push(@multipleMatches, $file) if (-f $file || -f "$file.gz" || -f "$file.bz2");
+		if ($sect && "$page.$sect" ne $request)
+		{
+			$file = "$dir/$page.$sect";
+			push(@multipleMatches, $file) if (-f $file || -f "$file.gz" || -f "$file.bz2");
+		}
+	}
+	if (@multipleMatches == 1)
+	{
+		return pop @multipleMatches;
+	}
+	if (@multipleMatches > 1)
+	{
+		return "";
+	}
+	# Ok, didn't find it using section numbers. Perhaps there's a page with the
+	# right name but wrong section number lurking there somewhere. (This search is slow)
+	# eg. page.1x in man1 (not man1x) directory
+	foreach $dir (@mandirs)
+	{
+		opendir(DIR, $dir);
+		foreach $f (readdir DIR)
+		{
+			if ($f =~ m/^$page\./)
+			{
+				$f =~ s/\.(gz|bz2)$//;
+				push(@multipleMatches, "$dir/$f");
+			}
+		}
+	}
+	if (@multipleMatches == 1)
+	{
+		return pop @multipleMatches;
+	}
+	return "";
+}
+
+sub loadPerlPages
+{
+	my ($dir,$f,$name,@files);
+	loadManDirs();
+	return if (%perlPages);
+	foreach $dir (@mandirs)
+	{
+		if (opendir(DIR, $dir))
+		{
+			@files = sort readdir DIR;
+			foreach $f (@files)
+			{
+				next if ($f eq "." || $f eq ".." || $f !~ m/\./);
+				next unless ("$dir/$f" =~ m/perl/);
+				$f =~ s/\.(gz|bz2)$//;
+				($name) = ($f =~ m,(.+)\.[^.]*$,);
+				$perlPages{$name} = "$dir/$f";
+			}
+			closedir DIR;
+		}
+	}
+	delete $perlPages{'perl'}; 	# too ubiquitous to be useful
+}
+
+sub fmtTime
+{
+    my $time = $_[0];
+    my @days = qw (Sun Mon Tue Wed Thu Fri Sat);
+    my @months = qw (Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
+    my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$istdst) = localtime($time);
+    return sprintf ("%s, %02d %s %4d %02d:%02d:%02d GMT",
+         $days[$wday],$mday,$months[$mon],1900+$year,$hour,$min,$sec);
+}
+