[p5sagit/p5-mst-13.2.git] / lib / Unicode / Collate / t / index.t


BEGIN {
    unless ("A" eq pack('U', 0x41)) {
	print "1..0 # Unicode::Collate " .
	    "cannot stringify a Unicode code point\n";
	exit 0;
    }
    if ($ENV{PERL_CORE}) {
	chdir('t') if -d 't';
	@INC = $^O eq 'MacOS' ? qw(::lib) : qw(../lib);
    }
}

use Test;
BEGIN { plan tests => 65 };

use strict;
use warnings;
use Unicode::Collate;

our $IsEBCDIC = ord("A") != 0x41;

#########################

ok(1);

my $Collator = Unicode::Collate->new(
  table => 'keys.txt',
  normalization => undef,
);

##############

my %old_level = $Collator->change(level => 2);

my $str;

my $orig = "This is a Perl book.";
my $sub = "PERL";
my $rep = "camel";
my $ret = "This is a camel book.";

$str = $orig;
if (my($pos,$len) = $Collator->index($str, $sub)) {
  substr($str, $pos, $len, $rep);
}

ok($str, $ret);

$Collator->change(%old_level);

$str = $orig;
if (my($pos,$len) = $Collator->index($str, $sub)) {
  substr($str, $pos, $len, $rep);
}

ok($str, $orig);

##############

my $match;

$Collator->change(level => 1);

$str = "Pe\x{300}rl";
$sub = "pe";
$ret = "Pe\x{300}";
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);

$str = "P\x{300}e\x{300}\x{301}\x{303}rl";
$sub = "pE";
$ret = "P\x{300}e\x{300}\x{301}\x{303}";
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);

$Collator->change(level => 2);

$str = "Pe\x{300}rl";
$sub = "pe";
$ret = undef;
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);

$str = "P\x{300}e\x{300}\x{301}\x{303}rl";
$sub = "pE";
$ret = undef;
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);

$str = "Pe\x{300}rl";
$sub = "pe\x{300}";
$ret = "Pe\x{300}";
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);

$str = "P\x{300}e\x{300}\x{301}\x{303}rl";
$sub = "p\x{300}E\x{300}\x{301}\x{303}";
$ret = "P\x{300}e\x{300}\x{301}\x{303}";
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);

##############

$Collator->change(level => 1);

$str = $IsEBCDIC
    ? "Ich mu\x{0059} studieren Perl."
    : "Ich mu\x{00DF} studieren Perl.";
$sub = $IsEBCDIC
    ? "m\x{00DC}ss"
    : "m\x{00FC}ss";
$ret = $IsEBCDIC
    ? "mu\x{0059}"
    : "mu\x{00DF}";
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);

$Collator->change(%old_level);

$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, undef);

$match = undef;
if (my($pos,$len) = $Collator->index("", "")) {
    $match = substr("", $pos, $len);
}
ok($match, "");

$match = undef;
if (my($pos,$len) = $Collator->index("", "abc")) {
    $match = substr("", $pos, $len);
}
ok($match, undef);

##############

$Collator->change(level => 1);

$str = "\0\cA\0\cAe\0\x{300}\cA\x{301}\cB\x{302}\0 \0\cA";
$sub = "e";
$ret = "e\0\x{300}\cA\x{301}\cB\x{302}\0";
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);

$Collator->change(level => 1);

$str = "\0\cA\0\cAe\0\cA\x{300}\0\cAe";
$sub = "e";
$ret = "e\0\cA\x{300}\0\cA";
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);


$Collator->change(%old_level);

$str = "e\x{300}";
$sub = "e";
$ret = undef;
$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub)) {
    $match = substr($str, $pos, $len);
}
ok($match, $ret);

##############

$Collator->change(level => 1);

$str = "The Perl is a language, and the perl is an interpreter.";
$sub = "PERL";

$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub, -40)) {
    $match = substr($str, $pos, $len);
}
ok($match, "Perl");

$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub, 4)) {
    $match = substr($str, $pos, $len);
}
ok($match, "Perl");

$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub, 5)) {
    $match = substr($str, $pos, $len);
}
ok($match, "perl");

$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub, 32)) {
    $match = substr($str, $pos, $len);
}
ok($match, "perl");

$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub, 33)) {
    $match = substr($str, $pos, $len);
}
ok($match, undef);

$match = undef;
if (my($pos, $len) = $Collator->index($str, $sub, 100)) {
    $match = substr($str, $pos, $len);
}
ok($match, undef);

$Collator->change(%old_level);

##############

my @ret;

$Collator->change(level => 1);

$ret = $Collator->match("P\cBe\x{300}\cBrl and PERL", "pe");
ok($ret);
ok($$ret eq "P\cBe\x{300}\cB");

@ret = $Collator->match("P\cBe\x{300}\cBrl and PERL", "pe");
ok($ret[0], "P\cBe\x{300}\cB");

$str = $IsEBCDIC ? "mu\x{0059}" : "mu\x{00DF}";
$sub = $IsEBCDIC ? "m\x{00DC}ss" : "m\x{00FC}ss";

($ret) = $Collator->match($str, $sub);
ok($ret, $str);

$str = $IsEBCDIC ? "mu\x{0059}" : "mu\x{00DF}";
$sub = $IsEBCDIC ? "m\x{00DC}s" : "m\x{00FC}s";

($ret) = $Collator->match($str, $sub);
ok($ret, undef);

$ret = join ':', $Collator->gmatch("P\cBe\x{300}\cBrl, perl, and PERL", "pe");
ok($ret eq "P\cBe\x{300}\cB:pe:PE");

$ret = $Collator->gmatch("P\cBe\x{300}\cBrl, perl, and PERL", "pe");
ok($ret == 3);

$str = "ABCDEF";
$sub = "cde";
$ret = $Collator->match($str, $sub);
$str = "01234567";
ok($ret && $$ret, "CDE");

$str = "ABCDEF";
$sub = "cde";
($ret) = $Collator->match($str, $sub);
$str = "01234567";
ok($ret, "CDE");


$Collator->change(level => 3);

$ret = $Collator->match("P\cBe\x{300}\cBrl and PERL", "pe");
ok($ret, undef);

@ret = $Collator->match("P\cBe\x{300}\cBrl and PERL", "pe");
ok(@ret == 0);

$ret = join ':', $Collator->gmatch("P\cBe\x{300}\cBrl and PERL", "pe");
ok($ret eq "");

$ret = $Collator->gmatch("P\cBe\x{300}\cBrl and PERL", "pe");
ok($ret == 0);

$ret = join ':', $Collator->gmatch("P\cBe\x{300}\cBrl, perl, and PERL", "pe");
ok($ret eq "pe");

$ret = $Collator->gmatch("P\cBe\x{300}\cBrl, perl, and PERL", "pe");
ok($ret == 1);

$str = $IsEBCDIC ? "mu\x{0059}" : "mu\x{00DF}";
$sub = $IsEBCDIC ? "m\x{00DC}ss" : "m\x{00FC}ss";

($ret) = $Collator->match($str, $sub);
ok($ret, undef);

$Collator->change(%old_level);

##############

$Collator->change(level => 1);

sub strreverse { scalar reverse shift }

$str = "P\cBe\x{300}\cBrl and PERL.";
$ret = $Collator->subst($str, "perl", 'Camel');
ok($ret, 1);
ok($str, "Camel and PERL.");

$str = "P\cBe\x{300}\cBrl and PERL.";
$ret = $Collator->subst($str, "perl", \&strreverse);
ok($ret, 1);
ok($str, "lr\cB\x{300}e\cBP and PERL.");

$str = "P\cBe\x{300}\cBrl and PERL.";
$ret = $Collator->gsubst($str, "perl", 'Camel');
ok($ret, 2);
ok($str, "Camel and Camel.");

$str = "P\cBe\x{300}\cBrl and PERL.";
$ret = $Collator->gsubst($str, "perl", \&strreverse);
ok($ret, 2);
ok($str, "lr\cB\x{300}e\cBP and LREP.");

$str = "Camel donkey zebra came\x{301}l CAMEL horse cAm\0E\0L...";
$Collator->gsubst($str, "camel", sub { "<b>$_[0]</b>" });
ok($str, "<b>Camel</b> donkey zebra <b>came\x{301}l</b> "
	. "<b>CAMEL</b> horse <b>cAm\0E\0L</b>...");

$Collator->change(level => 3);

$str = "P\cBe\x{300}\cBrl and PERL.";
$ret = $Collator->subst($str, "perl", "Camel");
ok(! $ret);
ok($str, "P\cBe\x{300}\cBrl and PERL.");

$str = "P\cBe\x{300}\cBrl and PERL.";
$ret = $Collator->subst($str, "perl", \&strreverse);
ok(! $ret);
ok($str, "P\cBe\x{300}\cBrl and PERL.");

$str = "P\cBe\x{300}\cBrl and PERL.";
$ret = $Collator->gsubst($str, "perl", "Camel");
ok($ret, 0);
ok($str, "P\cBe\x{300}\cBrl and PERL.");

$str = "P\cBe\x{300}\cBrl and PERL.";
$ret = $Collator->gsubst($str, "perl", \&strreverse);
ok($ret, 0);
ok($str, "P\cBe\x{300}\cBrl and PERL.");

$Collator->change(%old_level);

##############

$str = "Perl and Camel";
$ret = $Collator->gsubst($str, "\cA\cA\0", "AB");
ok($ret, 15);
ok($str, "ABPABeABrABlAB ABaABnABdAB ABCABaABmABeABlAB");

$str = '';
$ret = $Collator->subst($str, "", "ABC");
ok($ret, 1);
ok($str, "ABC");

$str = '';
$ret = $Collator->gsubst($str, "", "ABC");
ok($ret, 1);
ok($str, "ABC");

$str = 'PPPPP';
$ret = $Collator->gsubst($str, 'PP', "ABC");
ok($ret, 2);
ok($str, "ABCABCP");

##############

# Shifted; ignorable after variable

($ret) = $Collator->match("A?\x{300}!\x{301}\x{344}B\x{315}", "?!");
ok($ret, "?\x{300}!\x{301}\x{344}");

$Collator->change(alternate => 'Non-ignorable');

($ret) = $Collator->match("A?\x{300}!\x{301}B\x{315}", "?!");
ok($ret, undef);
Commit	Line	Data
4d36a948	1
4d36a948	2	BEGIN {
ae6aa562	3	unless ("A" eq pack('U', 0x41)) {
9f1f04a1	4	print "1..0 # Unicode::Collate " .
9f1f04a1	5	"cannot stringify a Unicode code point\n";
4d36a948	6	exit 0;
4d36a948	7	}
4d36a948	8	if ($ENV{PERL_CORE}) {
3756e7ca	9	chdir('t') if -d 't';
3756e7ca	10	@INC = $^O eq 'MacOS' ? qw(::lib) : qw(../lib);
4d36a948	11	}
	12	}
	13
	14	use Test;
	15	BEGIN { plan tests => 65 };
4c843366	16
	17	use strict;
	18	use warnings;
4d36a948	19	use Unicode::Collate;
	20
	21	our $IsEBCDIC = ord("A") != 0x41;
	22
	23	#########################
	24
91ae00cb	25	ok(1);
4d36a948	26
	27	my $Collator = Unicode::Collate->new(
	28	table => 'keys.txt',
	29	normalization => undef,
	30	);
	31
	32	##############
	33
	34	my %old_level = $Collator->change(level => 2);
	35
	36	my $str;
	37
	38	my $orig = "This is a Perl book.";
	39	my $sub = "PERL";
	40	my $rep = "camel";
	41	my $ret = "This is a camel book.";
	42
	43	$str = $orig;
	44	if (my($pos,$len) = $Collator->index($str, $sub)) {
	45	substr($str, $pos, $len, $rep);
	46	}
	47
	48	ok($str, $ret);
	49
	50	$Collator->change(%old_level);
	51
	52	$str = $orig;
	53	if (my($pos,$len) = $Collator->index($str, $sub)) {
	54	substr($str, $pos, $len, $rep);
	55	}
	56
	57	ok($str, $orig);
	58
	59	##############
	60
	61	my $match;
	62
	63	$Collator->change(level => 1);
	64
	65	$str = "Pe\x{300}rl";
	66	$sub = "pe";
	67	$ret = "Pe\x{300}";
	68	$match = undef;
	69	if (my($pos, $len) = $Collator->index($str, $sub)) {
	70	$match = substr($str, $pos, $len);
	71	}
	72	ok($match, $ret);
	73
	74	$str = "P\x{300}e\x{300}\x{301}\x{303}rl";
	75	$sub = "pE";
	76	$ret = "P\x{300}e\x{300}\x{301}\x{303}";
	77	$match = undef;
	78	if (my($pos, $len) = $Collator->index($str, $sub)) {
	79	$match = substr($str, $pos, $len);
	80	}
	81	ok($match, $ret);
	82
	83	$Collator->change(level => 2);
	84
	85	$str = "Pe\x{300}rl";
	86	$sub = "pe";
	87	$ret = undef;
	88	$match = undef;
	89	if (my($pos, $len) = $Collator->index($str, $sub)) {
90	$match = substr($str, $pos, $len);
91	}
92	ok($match, $ret);
93
94	$str = "P\x{300}e\x{300}\x{301}\x{303}rl";
95	$sub = "pE";
96	$ret = undef;
97	$match = undef;
98	if (my($pos, $len) = $Collator->index($str, $sub)) {
99	$match = substr($str, $pos, $len);
100	}
101	ok($match, $ret);
102
103	$str = "Pe\x{300}rl";
104	$sub = "pe\x{300}";
105	$ret = "Pe\x{300}";
106	$match = undef;
107	if (my($pos, $len) = $Collator->index($str, $sub)) {
108	$match = substr($str, $pos, $len);
109	}
110	ok($match, $ret);
111
112	$str = "P\x{300}e\x{300}\x{301}\x{303}rl";
113	$sub = "p\x{300}E\x{300}\x{301}\x{303}";
114	$ret = "P\x{300}e\x{300}\x{301}\x{303}";
115	$match = undef;
116	if (my($pos, $len) = $Collator->index($str, $sub)) {
117	$match = substr($str, $pos, $len);
118	}
119	ok($match, $ret);
120
121	##############
122
123	$Collator->change(level => 1);
124
125	$str = $IsEBCDIC
126	? "Ich mu\x{0059} studieren Perl."
127	: "Ich mu\x{00DF} studieren Perl.";
128	$sub = $IsEBCDIC
129	? "m\x{00DC}ss"
130	: "m\x{00FC}ss";
131	$ret = $IsEBCDIC
132	? "mu\x{0059}"
133	: "mu\x{00DF}";
134	$match = undef;
135	if (my($pos, $len) = $Collator->index($str, $sub)) {
136	$match = substr($str, $pos, $len);
137	}
138	ok($match, $ret);
139
140	$Collator->change(%old_level);
141
142	$match = undef;
143	if (my($pos, $len) = $Collator->index($str, $sub)) {
144	$match = substr($str, $pos, $len);
145	}
146	ok($match, undef);
147
148	$match = undef;
149	if (my($pos,$len) = $Collator->index("", "")) {
150	$match = substr("", $pos, $len);
151	}
152	ok($match, "");
153
154	$match = undef;
155	if (my($pos,$len) = $Collator->index("", "abc")) {
156	$match = substr("", $pos, $len);
157	}
158	ok($match, undef);
159
160	##############
161
162	$Collator->change(level => 1);
163
164	$str = "\0\cA\0\cAe\0\x{300}\cA\x{301}\cB\x{302}\0 \0\cA";
165	$sub = "e";
166	$ret = "e\0\x{300}\cA\x{301}\cB\x{302}\0";
167	$match = undef;
168	if (my($pos, $len) = $Collator->index($str, $sub)) {
169	$match = substr($str, $pos, $len);
170	}
171	ok($match, $ret);
172
173	$Collator->change(level => 1);
174
175	$str = "\0\cA\0\cAe\0\cA\x{300}\0\cAe";
176	$sub = "e";
177	$ret = "e\0\cA\x{300}\0\cA";
178	$match = undef;
179	if (my($pos, $len) = $Collator->index($str, $sub)) {
180	$match = substr($str, $pos, $len);
181	}
182	ok($match, $ret);
183
184
185	$Collator->change(%old_level);
186
187	$str = "e\x{300}";
188	$sub = "e";
189	$ret = undef;
190	$match = undef;
191	if (my($pos, $len) = $Collator->index($str, $sub)) {
192	$match = substr($str, $pos, $len);
193	}
194	ok($match, $ret);
195
196	##############
197
198	$Collator->change(level => 1);
199
200	$str = "The Perl is a language, and the perl is an interpreter.";
201	$sub = "PERL";
202
203	$match = undef;
204	if (my($pos, $len) = $Collator->index($str, $sub, -40)) {
205	$match = substr($str, $pos, $len);
206	}
207	ok($match, "Perl");
208
209	$match = undef;
210	if (my($pos, $len) = $Collator->index($str, $sub, 4)) {
211	$match = substr($str, $pos, $len);
212	}
213	ok($match, "Perl");
214
215	$match = undef;
216	if (my($pos, $len) = $Collator->index($str, $sub, 5)) {
217	$match = substr($str, $pos, $len);
218	}
219	ok($match, "perl");
220
221	$match = undef;
222	if (my($pos, $len) = $Collator->index($str, $sub, 32)) {
223	$match = substr($str, $pos, $len);
224	}
225	ok($match, "perl");
226
227	$match = undef;
228	if (my($pos, $len) = $Collator->index($str, $sub, 33)) {
229	$match = substr($str, $pos, $len);
230	}
231	ok($match, undef);
232
233	$match = undef;
234	if (my($pos, $len) = $Collator->index($str, $sub, 100)) {
235	$match = substr($str, $pos, $len);
236	}
237	ok($match, undef);
238
239	$Collator->change(%old_level);
240
241	##############
242
243	my @ret;
244
245	$Collator->change(level => 1);
246
247	$ret = $Collator->match("P\cBe\x{300}\cBrl and PERL", "pe");
248	ok($ret);
249	ok($$ret eq "P\cBe\x{300}\cB");
250
251	@ret = $Collator->match("P\cBe\x{300}\cBrl and PERL", "pe");
252	ok($ret[0], "P\cBe\x{300}\cB");
253
254	$str = $IsEBCDIC ? "mu\x{0059}" : "mu\x{00DF}";
255	$sub = $IsEBCDIC ? "m\x{00DC}ss" : "m\x{00FC}ss";
256
257	($ret) = $Collator->match($str, $sub);
258	ok($ret, $str);
259
260	$str = $IsEBCDIC ? "mu\x{0059}" : "mu\x{00DF}";
261	$sub = $IsEBCDIC ? "m\x{00DC}s" : "m\x{00FC}s";
262
263	($ret) = $Collator->match($str, $sub);
264	ok($ret, undef);
265
266	$ret = join ':', $Collator->gmatch("P\cBe\x{300}\cBrl, perl, and PERL", "pe");
267	ok($ret eq "P\cBe\x{300}\cB:pe:PE");
268
269	$ret = $Collator->gmatch("P\cBe\x{300}\cBrl, perl, and PERL", "pe");
270	ok($ret == 3);
271
272	$str = "ABCDEF";
273	$sub = "cde";
274	$ret = $Collator->match($str, $sub);
275	$str = "01234567";
276	ok($ret && $$ret, "CDE");
277
278	$str = "ABCDEF";
279	$sub = "cde";
280	($ret) = $Collator->match($str, $sub);
281	$str = "01234567";
282	ok($ret, "CDE");
283
284
285	$Collator->change(level => 3);
286
287	$ret = $Collator->match("P\cBe\x{300}\cBrl and PERL", "pe");
288	ok($ret, undef);
289
290	@ret = $Collator->match("P\cBe\x{300}\cBrl and PERL", "pe");
291	ok(@ret == 0);
292
293	$ret = join ':', $Collator->gmatch("P\cBe\x{300}\cBrl and PERL", "pe");
294	ok($ret eq "");
295
296	$ret = $Collator->gmatch("P\cBe\x{300}\cBrl and PERL", "pe");
297	ok($ret == 0);
298
299	$ret = join ':', $Collator->gmatch("P\cBe\x{300}\cBrl, perl, and PERL", "pe");
300	ok($ret eq "pe");
301
302	$ret = $Collator->gmatch("P\cBe\x{300}\cBrl, perl, and PERL", "pe");
303	ok($ret == 1);
304
305	$str = $IsEBCDIC ? "mu\x{0059}" : "mu\x{00DF}";
306	$sub = $IsEBCDIC ? "m\x{00DC}ss" : "m\x{00FC}ss";
307
308	($ret) = $Collator->match($str, $sub);
309	ok($ret, undef);
310
311	$Collator->change(%old_level);
312
313	##############
314
315	$Collator->change(level => 1);
316
317	sub strreverse { scalar reverse shift }
318
319	$str = "P\cBe\x{300}\cBrl and PERL.";
320	$ret = $Collator->subst($str, "perl", 'Camel');
321	ok($ret, 1);
322	ok($str, "Camel and PERL.");
323
324	$str = "P\cBe\x{300}\cBrl and PERL.";
325	$ret = $Collator->subst($str, "perl", \&strreverse);
326	ok($ret, 1);
327	ok($str, "lr\cB\x{300}e\cBP and PERL.");
328
329	$str = "P\cBe\x{300}\cBrl and PERL.";
330	$ret = $Collator->gsubst($str, "perl", 'Camel');
331	ok($ret, 2);
332	ok($str, "Camel and Camel.");
333
334	$str = "P\cBe\x{300}\cBrl and PERL.";
335	$ret = $Collator->gsubst($str, "perl", \&strreverse);
336	ok($ret, 2);
337	ok($str, "lr\cB\x{300}e\cBP and LREP.");
338
3756e7ca	339	$str = "Camel donkey zebra came\x{301}l CAMEL horse cAm\0E\0L...";
4d36a948	340	$Collator->gsubst($str, "camel", sub { "<b>$_[0]</b>" });
3756e7ca	341	ok($str, "<b>Camel</b> donkey zebra <b>came\x{301}l</b> "
3756e7ca	342	. "<b>CAMEL</b> horse <b>cAm\0E\0L</b>...");
4d36a948	343
	344	$Collator->change(level => 3);
	345
	346	$str = "P\cBe\x{300}\cBrl and PERL.";
	347	$ret = $Collator->subst($str, "perl", "Camel");
	348	ok(! $ret);
	349	ok($str, "P\cBe\x{300}\cBrl and PERL.");
	350
	351	$str = "P\cBe\x{300}\cBrl and PERL.";
	352	$ret = $Collator->subst($str, "perl", \&strreverse);
	353	ok(! $ret);
	354	ok($str, "P\cBe\x{300}\cBrl and PERL.");
	355
	356	$str = "P\cBe\x{300}\cBrl and PERL.";
	357	$ret = $Collator->gsubst($str, "perl", "Camel");
	358	ok($ret, 0);
	359	ok($str, "P\cBe\x{300}\cBrl and PERL.");
	360
	361	$str = "P\cBe\x{300}\cBrl and PERL.";
	362	$ret = $Collator->gsubst($str, "perl", \&strreverse);
	363	ok($ret, 0);
	364	ok($str, "P\cBe\x{300}\cBrl and PERL.");
	365
	366	$Collator->change(%old_level);
	367
	368	##############
	369
	370	$str = "Perl and Camel";
	371	$ret = $Collator->gsubst($str, "\cA\cA\0", "AB");
	372	ok($ret, 15);
	373	ok($str, "ABPABeABrABlAB ABaABnABdAB ABCABaABmABeABlAB");
	374
	375	$str = '';
	376	$ret = $Collator->subst($str, "", "ABC");
	377	ok($ret, 1);
	378	ok($str, "ABC");
	379
	380	$str = '';
	381	$ret = $Collator->gsubst($str, "", "ABC");
	382	ok($ret, 1);
	383	ok($str, "ABC");
	384
	385	$str = 'PPPPP';
	386	$ret = $Collator->gsubst($str, 'PP', "ABC");
	387	ok($ret, 2);
	388	ok($str, "ABCABCP");
	389
	390	##############
	391
	392	# Shifted; ignorable after variable
	393
	394	($ret) = $Collator->match("A?\x{300}!\x{301}\x{344}B\x{315}", "?!");
	395	ok($ret, "?\x{300}!\x{301}\x{344}");
	396
	397	$Collator->change(alternate => 'Non-ignorable');
	398
	399	($ret) = $Collator->match("A?\x{300}!\x{301}B\x{315}", "?!");
	400	ok($ret, undef);
3756e7ca	401