#! /usr/bin/env perl
#
# hyphenex.pl
#
# This small filter converts a hyphenation exception log article for
# TUGBoat to a real \hyphenation block.
#
# Written by Werner Lemberg <
[email protected]>.
#
# Version 1.3 (2008/05/20)
#
# Public domain.
#
#
# Usage:
# perl hyphenex.pl < tugboat-article > hyphenation-exceptions
# print header
print "% Hyphenation exceptions for US English,\n";
print "% based on hyphenation exception log articles in TUGboat.\n";
print "%\n";
print "% Copyright 2021 TeX Users Group.\n";
print "% You may freely use, modify and/or distribute this file.\n";
print "%\n";
print "% This is an automatically generated file. Do not edit!\n";
print "%\n";
print "% Please contact the TUGboat editorial staff <tugboat\@tug.org>\n";
print "% for corrections and omissions.\n";
print "\n";
print "\\hyphenation{\n";
while (<>) {
# retain only lines starting with \1 ... \6 or \tabalign
next if not (m/^\\[123456]/ || m/^\\tabalign/);
# remove final newline
chop;
# remove all TeX commands except \1 ... \6
s/\\[^123456\s{]+//g;
# remove all paired { ... }
1 while s/{(.*?)}/\1/g;
# skip lines which now have only whitespace before `&'
next if m/^\s*&/;
# remove comments
s/%.*//;
# remove trailing whitespace
s/\s*$//;
# remove trailing `*' (used as a marker in the document)
s/\*$//;
# split at whitespace
@field = split(' ');
if ($field[0] eq "\\1" || $field[0] eq "\\4") {
print " $field[2]\n";
}
elsif ($field[0] eq "\\2" || $field[0] eq "\\5") {
print " $field[2]\n";
# handle multiple suffixes separated by commata
@suffix_list = split(/,/, "$field[3]");
foreach $suffix (@suffix_list) {
print " $field[2]$suffix\n";
}
}
elsif ($field[0] eq "\\3" || $field[0] eq "\\6") {
# handle multiple suffixes separated by commata
@suffix_list = split(/,/, "$field[3],$field[4]");
foreach $suffix (@suffix_list) {
print " $field[2]$suffix\n";
}
}
else {
# for `&', split at `&' with trailing whitespace
@field = split(/&\s*/);
print " $field[1]\n";
}
}
# print trailer
print "}\n";
print "\n";
print "% EOF\n";
