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#! /usr/bin/env perl

###############################################################
# Convert boisik.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";

# Read and process boisik.sty.
while (my $oneline = <>) {
    chomp $oneline;

    # Output some package header information.
    if ($oneline =~ /NeedsTeXFormat/o) {
        print $oneline, "\n";
        next;
    }
    if ($oneline =~ /ProvidesPackage/o) {
        $oneline =~ s/boisik/fakeboisik/;
        $oneline =~ s/bsk/faked bsk/;
        print $oneline, "\n\n";
        print <<'HEADER';
\DeclareFontEncoding{LBL}{}{}
\DeclareFontFamily{LBL}{bskm}{\skewchar\font130 }
\DeclareFontShape{LBL}{bskm}{m}{it}{<->bskmi10}{}
\newcommand*{\BSKletterschar}[1]{{\usefont{LBL}{bskm}{m}{it}\char#1}}

\DeclareFontEncoding{LBM}{}{}
\DeclareFontFamily{LBM}{bskms}{\skewchar\font130 }
\DeclareFontShape{LBM}{bskms}{m}{n}{<->bskms10}{}
\newcommand*{\BSKbsksymbolschar}[1]{{\usefont{LBM}{bskms}{m}{n}\char#1}}

\DeclareFontEncoding{LBS}{}{}
\DeclareFontFamily{LBS}{bsk}{}
\DeclareFontShape{LBS}{bsk}{m}{n}{<->ssub*bsksy/m/n}{}
\newcommand*{\BSKsymbolschar}[1]{{\usefont{LBS}{bsk}{m}{n}\char#1}}

\DeclareFontFamily{U}{bskarr}{}
\DeclareFontShape{U}{bskarr}{m}{n}{<->bskarr10}{}
\newcommand*{\BSKbskarrchar}[1]{{\usefont{U}{bskarr}{m}{n}\char#1}}

\DeclareFontFamily{U}{bskma}{}
\DeclareFontShape{U}{bskma}{m}{n}{<->bskma10}{}
\newcommand*{\BSKbskaddchar}[1]{{\usefont{U}{bskma}{m}{n}\char#1}}

\DeclareFontFamily{U}{bskex}{}
\DeclareFontShape{U}{bskex}{m}{n}{<->sfixed*bskex10}{}
\newcommand*{\BSKlargesymbolschar}[1]{{\usefont{U}{bskex}{m}{n}\char#1}}

HEADER
    ;
        next;
    }

    # Define most of boisik's symbols.
    if ($oneline =~ /^\\DeclareMath(?:Symbol|Delimiter)\{\\([A-Za-z\@]+)\}.*\{(\w+)\}\s*\{(\"\w+)\}\s*$/o) {
        my ($sym, $cat, $slot) = ($1, $2, $3);
        print "\\DeclareRobustCommand{\\BSK$sym}{\\BSK${cat}char{$slot}}\n";
    }
}

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

\DeclareRobustCommand{\BSKmaltese}{\BSKbsksymbolschar{"EE}}
\DeclareRobustCommand{\BSKcheckmark}{\BSKbsksymbolschar{"EF}}
\DeclareRobustCommand{\BSKtintup}{\raisebox{2ex}{\BSKlargesymbolschar{"8A}}}
\DeclareRobustCommand{\BSKdintup}{\raisebox{3ex}{\BSKlargesymbolschar{"8B}}}

\DeclareRobustCommand{\BSKvec}[1]{%
  \mbox{#1}%
  \llap{\makebox[\wd0]{\BSKletterschar{"81}}\hspace{4pt}}%
}

\endinput
TRAILER
;

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