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#!/usr/bin/perl -i -p
# Make some hyphens unbreakable.
s{(--\w[-\w]+)}{ $x = $1; $x =~ s/-/\\-/g; $x }eg;
s/(?<!\\)-(['"\d*])/\\-$1/g;
s#(['"(= /,])-(?!-)#$1\\-#g;
s/(\\fB)-/$1\\-/g;
s/(\[\w)-(\w\])/$1\\-$2/g;
s{(\\f\(CW.*?\\fP)}{ $x = $1; $x =~ s/(?<!\\)-/\\-/g; $x }eg;
s/(\.\w+)-/$1\\-/g;
# We only need to use "\&'" or "\&." at the start of a line.
s/(?<=.)\\\&(['.])/$1$2/g;
# Use an em-dash where appropriate.
s/ \\?-{1,2} / \\(em /g;
# Some quotes turn into open/close quotes.
s/'(.)'/\\(oq$1\\(cq/g;
s/(^|[ (])"(?!( |$))/$1\\(lq/gm;
s/(?<! )"([.,:;! )]|$)/\\(rq$1/gm;
s/(\\\(lq[^(]*) "( |$)/$1 \\(rq$2/gm;
s/(^| )" ([^(]*\\\(rq)/$1\\(lq $2/gm;
# And some don't.
s/^([. ])(.*)/ $1 . realquotes($2) /egm;
s/(\\f(B|\(CW).*?\\fP)/ realquotes($1) /egs;
s/^\\\&(\\\(oq)/$1/gm;
sub realquotes
{
my($txt) = @_;
$txt =~ s/\\\([lr]q/"/g;
$txt =~ s/\\\([oc]q/'/g;
$txt;
}
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