#!/usr/bin/perl -i -p
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;