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#! /usr/bin/env perl

# Convert MnSymbol.sty to a faked version that does not require
# the definition of any additional math alphabets
#
# By Scott Pakin <scott.clsl@pakin.org>

use POSIX;
use warnings;
use strict;

# Output some header boilerplate.
print "\%" x 43, "\n";
print "\% This is a generated file.  DO NOT EDIT. \%\n";
print "\%" x 43, "\n";
print "\n";
print strftime("\\ProvidesPackage{fakeMnSymbol}[\%Y/\%m/\%d v1.0 faked version of MnSymbol.sty]\n", localtime());

# Read the font metrics for the largesymbol font in preparation for
# faking the variable-sized delimiters.
my $tfmfile = `kpsewhich MnSymbolE10.tfm`;
my @nextlarger;      # Map from a character number to the next larger character
my @varchar;         # Map from a character number to a varchar hash
if ($tfmfile ne "") {
    chomp $tfmfile;
    open (LARGESYMBOLS, "tftopl $tfmfile|") || die "tftopl $tfmfile: $!\n";
    my $charnum = -1;   # Character number of the current character
    while (my $oneline = <LARGESYMBOLS>) {
	chomp $oneline;
	if ($oneline =~ /^\(CHARACTER ([CO]) (\w+)/) {
	    $charnum = $1 eq "O" ? oct($2) : ord($2);
	}
	elsif ($oneline =~ /\(NEXTLARGER ([CO]) (\w+)/) {
	    $nextlarger[$charnum] = $1 eq "O" ? oct($2) : ord($2);
	}
	elsif ($oneline =~ /\((TOP|MID|BOT|REP) ([CO]) (\w+)/) {
	    $varchar[$charnum]->{$1} = $2 eq "O" ? oct($3) : ord($3);
	}
    }
    close LARGESYMBOLS;
}

# Process each symbol declaration in turn.
my $slot = 0;
my %families;
while (<>) {
    # Process all symbols defined with \Decl@Mn@Char.
    /\\Set\@Mn\@Sym\{(\d+)\}/ && do {$slot=0+$1; next};
    /^\\Decl\@Mn\@Char\\@?(\w+)\s*\{(\w+)\}/ && do {
	my $symname = $1;
	my $family = $2;
	if ($family =~ /^MnSy(\w)$/) {
	    $family = "MnSymbol" . $1;
	}
	elsif ($family eq "symbols") {
	    $family = "MnSymbolF";
	}
	else {
	    die "${0}: unrecognized symbol family \"$family\"\n";
	}
	if (!defined $families{$family}) {
	    $families{$family}++;
	    print "\n";
	    print "\\DeclareFontFamily{U}{$family}{}\n";
	    print "\\DeclareFontShape{U}{$family}{m}{n}{<-> ${family}10}{}\n";
	}
	print "\\DeclareRobustCommand{\\MNS$symname}";
	print "{\\mbox{\\usefont{U}{$family}{m}{n}\\char$slot}}\n";
	$slot++;
    };

    # Process variable-sized symbols specially.
    /^\\Decl\@Mn\@(Open|Close|Delim)\s*\{([^\}]+)\}.*\{\'(\d+)\}\s*$/ && do {
	my $charnum = oct $3;
	my %sym2name = ("[" => "lbracket",
			"]" => "rbracket",
			"|" => "pipe",
			"<" => "less",
			">" => "greater",
			"/" => "slash",
			"(" => "lparen",
			")" => "rparen");
	my $symname = substr($2, 0, 1) eq "\\" ? substr($2, 1) : $sym2name{$2};
	my $family = "MnSymbolE";
	if (!defined $families{$family}) {
	    $families{$family}++;
	    print "\n";
	    print "\\DeclareFontFamily{U}{$family}{}\n";
	    print "\\DeclareFontShape{U}{$family}{m}{n}{<-> ${family}10}{}\n";
	}
	my $tcharnum;       # Character number of the \big symbol size
	my $dcharnum;       # Character number of the variable-sized symbol
	$tcharnum = defined $nextlarger[$charnum] ? $nextlarger[$charnum] : $charnum;
	for ($dcharnum=$tcharnum; defined $nextlarger[$dcharnum]; $dcharnum=$nextlarger[$dcharnum]) {
	}

	# Define the text-sized version of the delimiter.
	print "\\DeclareRobustCommand{\\MNSt$symname}";
	print "{\\mbox{\\usefont{U}{$family}{m}{n}";
	if (defined $varchar[$tcharnum]) {
	    # Even the \big size is variable-sized.
	    my $rep = $varchar[$tcharnum]->{REP};
	    my $top = $varchar[$tcharnum]->{TOP} || $rep;
	    my $bot = $varchar[$tcharnum]->{BOT} || $rep;
	    my $mid = $varchar[$tcharnum]->{MID} || $rep;
	    print "\\CLSLfaketdelim{$top}{$mid}{$bot}";
	}
	else {
	    print "\\char$tcharnum";
	}
	print "}}\n";

	# Define the display-sized version of the delimiter.
	print "\\DeclareRobustCommand{\\MNSd$symname}";
	print "{\\mbox{\\usefont{U}{$family}{m}{n}";
	my $rep = $varchar[$dcharnum]->{REP};
	if (defined $rep) {
	    my $top = $varchar[$dcharnum]->{TOP} || $rep;
	    my $bot = $varchar[$dcharnum]->{BOT} || $rep;
	    my $mid = $varchar[$dcharnum]->{MID} || $rep;
	    print "\\CLSLfakeddelim{$top}{$mid}{$bot}{$rep}";
	}
	else {
	    print "\\char$dcharnum";
	}
	print "}}\n";
    };
}

# Output some trailer boilerplate.
print <<'TRAILER';

% Redefine some problematic symbols.
\DeclareRobustCommand{\MNSdlparen}{\mbox{\usefont{U}{MnSymbolE}{m}{n}\char140}}
\DeclareRobustCommand{\MNSdrparen}{\mbox{\usefont{U}{MnSymbolE}{m}{n}\char145}}

% The following symbols were renamed and adapted from MnSymbol.sty.
\let\MNSrelbar=\MNSleftrightline
\DeclareRobustCommand\MNSjoinrel{\mathrel{\mkern-12.4mu}}
\DeclareRobustCommand\MNSlongrightarrow{\DOTSB\MNSleftrightline\MNSjoinrel\MNSrightarrow}
\DeclareRobustCommand\MNSlongleftarrow{\DOTSB\MNSleftarrow\MNSjoinrel\MNSleftrightline}
\DeclareRobustCommand\MNSlongleftrightarrow{\DOTSB\MNSleftarrow\MNSjoinrel\MNSrightarrow}
\DeclareRobustCommand\MNSLongrightarrow{\DOTSB\MNSLeftrightline\MNSjoinrel\MNSRightarrow}
\DeclareRobustCommand\MNSLongleftarrow{\DOTSB\MNSLeftarrow\MNSjoinrel\MNSLeftrightline}
\DeclareRobustCommand\MNSLongleftrightarrow{\DOTSB\MNSLeftarrow\MNSjoinrel\MNSRightarrow}
\DeclareRobustCommand\MNSlongmapsto{\DOTSB\MNSleftfootline\MNSjoinrel\MNSrightarrow}
\DeclareRobustCommand\MNSemptyfilledspoon{\DOTSB\MNSleftspoon\mkern-13mu\MNSrightfilledspoon}
\DeclareRobustCommand\MNSfilledemptyspoon{\DOTSB\MNSleftfilledspoon\mkern-13mu\MNSrightspoon}
\DeclareRobustCommand\MNSlargeemptyfilledspoon{\DOTSB\mathrel{\MNScirc\mkern-3mu\MNSrelbar\mkern-3mu\MNSbullet}}
\DeclareRobustCommand\MNSlargefilledemptyspoon{\DOTSB\mathrel{\MNSbullet\mkern-3mu\MNSrelbar\mkern-3mu\MNScirc}}
\DeclareRobustCommand\MNScoloneq{\ensuremath{\mathrel{{\MNSvdotdot}{\MNSequal}}}}

% The following accents were renamed and adapted from MnSymbol.sty.
\DeclareRobustCommand{\MNSoverbrace}[1]{\CLSLfakewidetopaccent{#1}{1.5ex}{'251}{2.1ex}{'253}{{U}{MnSymbolE}{m}{n}}}
\DeclareRobustCommand{\MNSunderbrace}[1]{\CLSLfakewidetopaccent{#1}{-1.7ex}{'256}{-1.7ex}{'260}{{U}{MnSymbolE}{m}{n}}}
\DeclareRobustCommand{\MNSwidehat}[1]{\CLSLfakewidetopaccent{#1}{0ex}{'302}{0.6ex}{'303}{{U}{MnSymbolE}{m}{n}}}
\DeclareRobustCommand{\MNSwidetilde}[1]{\CLSLfakewidetopaccent{#1}{0ex}{'307}{0.6ex}{'310}{{U}{MnSymbolE}{m}{n}}}
\DeclareRobustCommand{\MNSwideparen}[1]{\CLSLfakewidetopaccent{#1}{0ex}{'314}{0.6ex}{'315}{{U}{MnSymbolE}{m}{n}}}
\DeclareRobustCommand{\MNSvec}[1]{\CLSLfakewidetopaccent{#1}{0ex}{'321}{0ex}{'321}{{U}{MnSymbolE}{m}{n}}}
\def\MNSlinesegmentfill@{\arrowfill@\MNSleftfootline\MNSrelbar\MNSrightfootline}
\def\MNSleftharpoonfill@{\arrowfill@\MNSleftharpooncw\MNSrelbar\MNSrelbar}
\def\MNSrightharpoonfill@{\arrowfill@\MNSrelbar\MNSrelbar\MNSrightharpoonccw}
\DeclareRobustCommand{\MNSoverlinesegment}{\mathpalette{\overarrow@\MNSlinesegmentfill@}}
\DeclareRobustCommand{\MNSoverleftharpoon}{\mathpalette{\overarrow@\MNSleftharpoonfill@}}
\DeclareRobustCommand{\MNSoverrightharpoon}{\mathpalette{\overarrow@\MNSrightharpoonfill@}}
\DeclareRobustCommand{\MNSunderlinesegment}{\mathpalette{\underarrow@\MNSlinesegmentfill@}}
\def\MNSbracefill@#1#2#3#4#5{$\m@th#5#1\leaders\hbox{$#4$}\hfill#2\leaders\hbox{$#4$}\hfill#3$}
\def\MNSdowngroupfill@{\MNSbracefill@\MNSbraceld{}\MNSbracerd\MNSbracemid}
\def\MNSupgroupfill@{\MNSbracefill@\MNSbracelu{}\MNSbraceru\MNSbracemid}
\def\MNSoverbrace@#1#2#3{\vbox{\m@th\ialign{##\crcr
  #1#2\crcr\noalign{\kern2\p@\nointerlineskip}%
  $\m@th\hfil#2#3\hfil$\crcr}}}
\def\MNSunderbrace@#1#2#3{\vtop{\m@th\ialign{##\crcr
  $\m@th\hfil#2#3\hfil$\crcr
  \noalign{\kern2\p@\nointerlineskip}%
  #1#2\crcr}}}
\def\MNSbraceld{\mbox{\usefont{U}{MnSymbolE}{m}{n}\char'263}}
\def\MNSbracelu{\mbox{\usefont{U}{MnSymbolE}{m}{n}\char'264}}
\def\MNSbracerd{\mbox{\usefont{U}{MnSymbolE}{m}{n}\char'265}}
\def\MNSbraceru{\mbox{\usefont{U}{MnSymbolE}{m}{n}\char'266}}
\def\MNSbracemid{\mbox{\usefont{U}{MnSymbolE}{m}{n}\char'271}}
\DeclareRobustCommand{\MNSovergroup}{\mathpalette{\MNSoverbrace@\MNSdowngroupfill@}}
\DeclareRobustCommand{\MNSundergroup}{\mathpalette{\MNSunderbrace@\MNSupgroupfill@}}

\endinput
TRAILER
;