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Eliminate nok() from ReTest.pl by refactoring all uses to other test functions.
[perl5.git] / t / re / pat.t
CommitLineData
8d063cd8 1#!./perl
8d37f932
DD
2#
3# This is a home for regular expression tests that don't fit into
67a2b8c6 4# the format supported by re/regexp.t. If you want to add a test
ff3f963a
KW
5# that does fit that format, add it to re/re_tests, not here. Tests for \N
6# should be added here because they are treated as single quoted strings
7# there, which means they avoid the lexer which otherwise would look at them.
8d063cd8 8
84281c31
A
9use strict;
10use warnings;
11use 5.010;
12
13
14sub run_tests;
15
9133bbab 16$| = 1;
3568d838 17
8d37f932 18
e4d48cc9
GS
19BEGIN {
20 chdir 't' if -d 't';
9d45b377
YO
21 @INC = ('../lib','.');
22 do "re/ReTest.pl" or die $@;
e4d48cc9 23}
84281c31 24
84281c31 25
7bd6b0e6 26plan tests => 426; # Update this when adding/deleting tests.
b7a35066 27
9d45b377 28run_tests() unless caller;
b7a35066 29
84281c31
A
30#
31# Tests start here.
32#
33sub run_tests {
0ef3e39e 34
84281c31 35 {
84281c31 36 my $x = "abc\ndef\n";
5895685f 37 (my $x_pretty = $x) =~ s/\n/\\n/g;
fd291da9 38
5895685f
NC
39 ok $x =~ /^abc/, qq ["$x_pretty" =~ /^abc/];
40 ok $x !~ /^def/, qq ["$x_pretty" !~ /^def/];
fd291da9 41
84281c31 42 # used to be a test for $*
5895685f 43 ok $x =~ /^def/m, qq ["$x_pretty" =~ /^def/m];
fd291da9 44
b33825c4
NC
45 ok(!($x =~ /^xxx/), qq ["$x_pretty" =~ /^xxx/]);
46 ok(!($x !~ /^abc/), qq ["$x_pretty" !~ /^abc/]);
fd291da9 47
5895685f 48 ok $x =~ /def/, qq ["$x_pretty" =~ /def/];
b33825c4 49 ok(!($x !~ /def/), qq ["$x_pretty" !~ /def/]);
4765795a 50
5895685f 51 ok $x !~ /.def/, qq ["$x_pretty" !~ /.def/];
b33825c4 52 ok(!($x =~ /.def/), qq ["$x_pretty" =~ /.def/]);
4765795a 53
5895685f 54 ok $x =~ /\ndef/, qq ["$x_pretty" =~ /\\ndef/];
b33825c4 55 ok(!($x !~ /\ndef/), qq ["$x_pretty" !~ /\\ndef/]);
84281c31 56 }
4765795a 57
84281c31
A
58 {
59 $_ = '123';
60 ok /^([0-9][0-9]*)/, qq [\$_ = '$_'; /^([0-9][0-9]*)/];
61 }
f9969324 62
84281c31
A
63 {
64 $_ = 'aaabbbccc';
65 ok /(a*b*)(c*)/ && $1 eq 'aaabbb' && $2 eq 'ccc',
66 qq [\$_ = '$_'; /(a*b*)(c*)/];
67 ok /(a+b+c+)/ && $1 eq 'aaabbbccc', qq [\$_ = '$_'; /(a+b+c+)/];
b33825c4 68 unlike($_, qr/a+b?c+/, qq [\$_ = '$_'; /a+b?c+/]);
84281c31
A
69
70 $_ = 'aaabccc';
71 ok /a+b?c+/, qq [\$_ = '$_'; /a+b?c+/];
72 ok /a*b?c*/, qq [\$_ = '$_'; /a*b?c*/];
73
74 $_ = 'aaaccc';
75 ok /a*b?c*/, qq [\$_ = '$_'; /a*b?c*/];
b33825c4 76 unlike($_, qr/a*b+c*/, qq [\$_ = '$_'; /a*b+c*/]);
84281c31
A
77
78 $_ = 'abcdef';
79 ok /bcd|xyz/, qq [\$_ = '$_'; /bcd|xyz/];
80 ok /xyz|bcd/, qq [\$_ = '$_'; /xyz|bcd/];
81 ok m|bc/*d|, qq [\$_ = '$_'; m|bc/*d|];
82 ok /^$_$/, qq [\$_ = '$_'; /^\$_\$/];
4765795a 83 }
4765795a 84
84281c31
A
85 {
86 # used to be a test for $*
5895685f 87 ok "ab\ncd\n" =~ /^cd/m, q ["ab\ncd\n" =~ /^cd/m];
84281c31 88 }
4765795a 89
84281c31
A
90 {
91 our %XXX = map {($_ => $_)} 123, 234, 345;
92
93 our @XXX = ('ok 1','not ok 1', 'ok 2','not ok 2','not ok 3');
94 while ($_ = shift(@XXX)) {
b33825c4 95 my $e = index ($_, 'not') >= 0 ? '' : 1;
725a61d7 96 my $r = m?(.*)?;
b33825c4 97 is($r, $e, "?(.*)?");
84281c31
A
98 /not/ && reset;
99 if (/not ok 2/) {
100 if ($^O eq 'VMS') {
101 $_ = shift(@XXX);
102 }
103 else {
104 reset 'X';
105 }
106 }
107 }
4765795a 108
84281c31
A
109 SKIP: {
110 if ($^O eq 'VMS') {
111 skip "Reset 'X'", 1;
112 }
113 ok !keys %XXX, "%XXX is empty";
114 }
4765795a 115
84281c31 116 }
4765795a 117
84281c31 118 {
4f890a30 119 my $message = "Test empty pattern";
84281c31
A
120 my $xyz = 'xyz';
121 my $cde = 'cde';
122
123 $cde =~ /[^ab]*/;
124 $xyz =~ //;
4f890a30 125 is($&, $xyz, $message);
84281c31
A
126
127 my $foo = '[^ab]*';
128 $cde =~ /$foo/;
129 $xyz =~ //;
4f890a30 130 is($&, $xyz, $message);
84281c31
A
131
132 $cde =~ /$foo/;
133 my $null;
134 no warnings 'uninitialized';
135 $xyz =~ /$null/;
4f890a30 136 is($&, $xyz, $message);
84281c31
A
137
138 $null = "";
139 $xyz =~ /$null/;
4f890a30 140 is($&, $xyz, $message);
84281c31 141 }
4765795a 142
84281c31 143 {
4f890a30 144 my $message = q !Check $`, $&, $'!;
84281c31 145 $_ = 'abcdefghi';
0f289c68 146 /def/; # optimized up to cmd
4f890a30 147 is("$`:$&:$'", 'abc:def:ghi', $message);
4765795a 148
84281c31 149 no warnings 'void';
0f289c68 150 /cde/ + 0; # optimized only to spat
4f890a30 151 is("$`:$&:$'", 'ab:cde:fghi', $message);
4765795a 152
0f289c68 153 /[d][e][f]/; # not optimized
4f890a30 154 is("$`:$&:$'", 'abc:def:ghi', $message);
84281c31 155 }
4765795a 156
84281c31
A
157 {
158 $_ = 'now is the {time for all} good men to come to.';
159 / {([^}]*)}/;
160 iseq $1, 'time for all', "Match braces";
161 }
4765795a 162
84281c31 163 {
4f890a30 164 my $message = "{N,M} quantifier";
84281c31 165 $_ = 'xxx {3,4} yyy zzz';
4f890a30
NC
166 ok(/( {3,4})/, $message);
167 is($1, ' ', $message);
168 unlike($_, qr/( {4,})/, $message);
169 ok(/( {2,3}.)/, $message);
170 is($1, ' y', $message);
171 ok(/(y{2,3}.)/, $message);
172 is($1, 'yyy ', $message);
173 unlike($_, qr/x {3,4}/, $message);
174 unlike($_, qr/^xxx {3,4}/, $message);
84281c31 175 }
4765795a 176
84281c31 177 {
4f890a30 178 my $message = "Test /g";
84281c31
A
179 local $" = ":";
180 $_ = "now is the time for all good men to come to.";
181 my @words = /(\w+)/g;
182 my $exp = "now:is:the:time:for:all:good:men:to:come:to";
4765795a 183
4f890a30 184 is("@words", $exp, $message);
4765795a 185
84281c31
A
186 @words = ();
187 while (/\w+/g) {
188 push (@words, $&);
189 }
4f890a30 190 is("@words", $exp, $message);
4765795a 191
84281c31
A
192 @words = ();
193 pos = 0;
194 while (/to/g) {
195 push(@words, $&);
196 }
4f890a30 197 is("@words", "to:to", $message);
4765795a 198
84281c31
A
199 pos $_ = 0;
200 @words = /to/g;
4f890a30 201 is("@words", "to:to", $message);
84281c31 202 }
4765795a 203
84281c31
A
204 {
205 $_ = "abcdefghi";
206
207 my $pat1 = 'def';
208 my $pat2 = '^def';
209 my $pat3 = '.def.';
210 my $pat4 = 'abc';
211 my $pat5 = '^abc';
212 my $pat6 = 'abc$';
213 my $pat7 = 'ghi';
214 my $pat8 = '\w*ghi';
215 my $pat9 = 'ghi$';
216
217 my $t1 = my $t2 = my $t3 = my $t4 = my $t5 =
218 my $t6 = my $t7 = my $t8 = my $t9 = 0;
219
220 for my $iter (1 .. 5) {
221 $t1++ if /$pat1/o;
222 $t2++ if /$pat2/o;
223 $t3++ if /$pat3/o;
224 $t4++ if /$pat4/o;
225 $t5++ if /$pat5/o;
226 $t6++ if /$pat6/o;
227 $t7++ if /$pat7/o;
228 $t8++ if /$pat8/o;
229 $t9++ if /$pat9/o;
230 }
231 my $x = "$t1$t2$t3$t4$t5$t6$t7$t8$t9";
232 iseq $x, '505550555', "Test /o";
233 }
4765795a 234
4765795a 235
4f890a30 236 {
84281c31
A
237 my $xyz = 'xyz';
238 ok "abc" =~ /^abc$|$xyz/, "| after \$";
4765795a 239
84281c31 240 # perl 4.009 says "unmatched ()"
4f890a30 241 my $message = '$ inside ()';
4765795a 242
84281c31
A
243 my $result;
244 eval '"abc" =~ /a(bc$)|$xyz/; $result = "$&:$1"';
4f890a30
NC
245 is($@, "", $message);
246 is($result, "abc:bc", $message);
84281c31 247 }
4765795a 248
4765795a 249
84281c31 250 {
4f890a30 251 my $message = "Scalar /g";
84281c31
A
252 $_ = "abcfooabcbar";
253
4f890a30
NC
254 ok( /abc/g && $` eq "", $message);
255 ok( /abc/g && $` eq "abcfoo", $message);
256 ok(!/abc/g, $message);
84281c31 257
4f890a30 258 $message = "Scalar /gi";
84281c31 259 pos = 0;
4f890a30
NC
260 ok( /ABC/gi && $` eq "", $message);
261 ok( /ABC/gi && $` eq "abcfoo", $message);
262 ok(!/ABC/gi, $message);
84281c31 263
4f890a30 264 $message = "Scalar /g";
84281c31 265 pos = 0;
4f890a30
NC
266 ok( /abc/g && $' eq "fooabcbar", $message);
267 ok( /abc/g && $' eq "bar", $message);
84281c31
A
268
269 $_ .= '';
270 my @x = /abc/g;
271 iseq @x, 2, "/g reset after assignment";
4765795a 272 }
4765795a 273
84281c31 274 {
4f890a30 275 my $message = '/g, \G and pos';
84281c31
A
276 $_ = "abdc";
277 pos $_ = 2;
278 /\Gc/gc;
4f890a30 279 is(pos $_, 2, $message);
84281c31 280 /\Gc/g;
4f890a30 281 is(pos $_, undef, $message);
84281c31 282 }
4765795a 283
84281c31 284 {
4f890a30 285 my $message = '(?{ })';
84281c31
A
286 our $out = 1;
287 'abc' =~ m'a(?{ $out = 2 })b';
4f890a30 288 is($out, 2, $message);
84281c31
A
289
290 $out = 1;
291 'abc' =~ m'a(?{ $out = 3 })c';
4f890a30 292 is($out, 1, $message);
84281c31 293 }
4765795a 294
4765795a 295
84281c31
A
296 {
297 $_ = 'foobar1 bar2 foobar3 barfoobar5 foobar6';
298 my @out = /(?<!foo)bar./g;
299 iseq "@out", 'bar2 barf', "Negative lookbehind";
300 }
4765795a 301
84281c31 302 {
4f890a30 303 my $message = "REG_INFTY tests";
84281c31
A
304 # Tests which depend on REG_INFTY
305 $::reg_infty = $Config {reg_infty} // 32767;
306 $::reg_infty_m = $::reg_infty - 1;
307 $::reg_infty_p = $::reg_infty + 1;
93f09d7b 308 $::reg_infty_m = $::reg_infty_m; # Suppress warning.
84281c31
A
309
310 # As well as failing if the pattern matches do unexpected things, the
311 # next three tests will fail if you should have picked up a lower-than-
312 # default value for $reg_infty from Config.pm, but have not.
313
4f890a30
NC
314 eval_ok q (('aaa' =~ /(a{1,$::reg_infty_m})/)[0] eq 'aaa'), $message;
315 eval_ok q (('a' x $::reg_infty_m) =~ /a{$::reg_infty_m}/), $message;
316 eval_ok q (('a' x ($::reg_infty_m - 1)) !~ /a{$::reg_infty_m}/), $message;
84281c31 317 eval "'aaa' =~ /a{1,$::reg_infty}/";
4f890a30 318 like($@, /^\QQuantifier in {,} bigger than/, $message);
84281c31 319 eval "'aaa' =~ /a{1,$::reg_infty_p}/";
4f890a30 320 like($@, qr/^\QQuantifier in {,} bigger than/, $message);
4765795a 321 }
8269fa76 322
84281c31
A
323 {
324 # Poke a couple more parse failures
325 my $context = 'x' x 256;
326 eval qq("${context}y" =~ /(?<=$context)y/);
327 ok $@ =~ /^\QLookbehind longer than 255 not/, "Lookbehind limit";
328 }
8269fa76 329
84281c31
A
330 {
331 # Long Monsters
84281c31
A
332 for my $l (125, 140, 250, 270, 300000, 30) { # Ordered to free memory
333 my $a = 'a' x $l;
4f890a30
NC
334 my $message = "Long monster, length = $l";
335 like("ba$a=", qr/a$a=/, $message);
336 unlike("b$a=", qr/a$a=/, $message);
337 like("b$a=", qr/ba+=/, $message);
84281c31 338
4f890a30 339 like("ba$a=", /b(?:a|b)+=/, $message);
84281c31
A
340 }
341 }
8269fa76 342
b8ef571c 343
84281c31
A
344 {
345 # 20000 nodes, each taking 3 words per string, and 1 per branch
346 my $long_constant_len = join '|', 12120 .. 32645;
347 my $long_var_len = join '|', 8120 .. 28645;
348 my %ans = ( 'ax13876y25677lbc' => 1,
349 'ax13876y25677mcb' => 0, # not b.
350 'ax13876y35677nbc' => 0, # Num too big
351 'ax13876y25677y21378obc' => 1,
0f289c68 352 'ax13876y25677y21378zbc' => 0, # Not followed by [k-o]
84281c31
A
353 'ax13876y25677y21378y21378kbc' => 1,
354 'ax13876y25677y21378y21378kcb' => 0, # Not b.
355 'ax13876y25677y21378y21378y21378kbc' => 0, # 5 runs
356 );
357
84281c31 358 for (keys %ans) {
4f890a30
NC
359 my $message = "20000 nodes, const-len '$_'";
360 ok !($ans{$_} xor /a(?=([yx]($long_constant_len)){2,4}[k-o]).*b./o), $message;
84281c31 361
4f890a30
NC
362 $message = "20000 nodes, var-len '$_'";
363 ok !($ans{$_} xor /a(?=([yx]($long_var_len)){2,4}[k-o]).*b./o,), $message;
84281c31 364 }
b8ef571c 365 }
209a9bc1 366
84281c31 367 {
4f890a30 368 my $message = "Complicated backtracking";
84281c31
A
369 $_ = " a (bla()) and x(y b((l)u((e))) and b(l(e)e)e";
370 my $expect = "(bla()) ((l)u((e))) (l(e)e)";
371
372 use vars '$c';
373 sub matchit {
374 m/
375 (
376 \(
0f289c68 377 (?{ $c = 1 }) # Initialize
84281c31
A
378 (?:
379 (?(?{ $c == 0 }) # PREVIOUS iteration was OK, stop the loop
380 (?!
0f289c68
YO
381 ) # Fail: will unwind one iteration back
382 )
84281c31 383 (?:
0f289c68 384 [^()]+ # Match a big chunk
84281c31
A
385 (?=
386 [()]
0f289c68 387 ) # Do not try to match subchunks
84281c31
A
388 |
389 \(
390 (?{ ++$c })
391 |
392 \)
393 (?{ --$c })
394 )
0f289c68 395 )+ # This may not match with different subblocks
84281c31
A
396 )
397 (?(?{ $c != 0 })
398 (?!
0f289c68
YO
399 ) # Fail
400 ) # Otherwise the chunk 1 may succeed with $c>0
84281c31
A
401 /xg;
402 }
3568d838 403
84281c31
A
404 my @ans = ();
405 my $res;
406 push @ans, $res while $res = matchit;
4f890a30 407 is("@ans", "1 1 1", $message);
3568d838 408
84281c31 409 @ans = matchit;
4f890a30 410 is("@ans", $expect, $message);
3568d838 411
4f890a30 412 $message = "Recursion with (??{ })";
84281c31
A
413 our $matched;
414 $matched = qr/\((?:(?>[^()]+)|(??{$matched}))*\)/;
3568d838 415
84281c31
A
416 @ans = my @ans1 = ();
417 push (@ans, $res), push (@ans1, $&) while $res = m/$matched/g;
3568d838 418
4f890a30
NC
419 is("@ans", "1 1 1", $message);
420 is("@ans1", $expect, $message);
3568d838 421
84281c31 422 @ans = m/$matched/g;
4f890a30 423 is("@ans", $expect, $message);
3568d838 424
84281c31 425 }
3568d838 426
84281c31
A
427 {
428 ok "abc" =~ /^(??{"a"})b/, '"abc" =~ /^(??{"a"})b/';
429 }
3568d838 430
84281c31 431 {
0f289c68 432 my @ans = ('a/b' =~ m%(.*/)?(.*)%); # Stack may be bad
84281c31
A
433 iseq "@ans", 'a/ b', "Stack may be bad";
434 }
3568d838 435
84281c31 436 {
4f890a30 437 my $message = "Eval-group not allowed at runtime";
84281c31
A
438 my $code = '{$blah = 45}';
439 our $blah = 12;
440 eval { /(?$code)/ };
4f890a30 441 ok($@ && $@ =~ /not allowed at runtime/ && $blah == 12, $message);
84281c31 442
3044771b
NC
443 $blah = 12;
444 my $res = eval { "xx" =~ /(?$code)/o };
445 {
446 no warnings 'uninitialized';
5895685f 447 chomp $@; my $message = "$message '$@', '$res', '$blah'";
4f890a30 448 ok($@ && $@ =~ /not allowed at runtime/ && $blah == 12, $message);
3044771b
NC
449 }
450
451 $code = '=xx';
452 $blah = 12;
453 $res = eval { "xx" =~ /(?$code)/o };
454 {
455 no warnings 'uninitialized';
4f890a30
NC
456 my $message = "$message '$@', '$res', '$blah'";
457 ok(!$@ && $res, $message);
3044771b 458 }
3568d838 459
84281c31
A
460 $code = '{$blah = 45}';
461 $blah = 12;
462 eval "/(?$code)/";
4f890a30 463 is($blah, 45, $message);
3568d838 464
84281c31
A
465 $blah = 12;
466 /(?{$blah = 45})/;
4f890a30 467 is($blah, 45, $message);
84281c31 468 }
3568d838 469
84281c31 470 {
4f890a30 471 my $message = "Pos checks";
84281c31
A
472 my $x = 'banana';
473 $x =~ /.a/g;
4f890a30 474 is(pos $x, 2, $message);
3568d838 475
84281c31 476 $x =~ /.z/gc;
4f890a30 477 is(pos $x, 2, $message);
3568d838 478
84281c31
A
479 sub f {
480 my $p = $_[0];
481 return $p;
482 }
3568d838 483
84281c31 484 $x =~ /.a/g;
4f890a30 485 is(f (pos $x), 4, $message);
84281c31 486 }
3568d838 487
84281c31 488 {
4f890a30 489 my $message = 'Checking $^R';
84281c31
A
490 our $x = $^R = 67;
491 'foot' =~ /foo(?{$x = 12; 75})[t]/;
4f890a30 492 is($^R, 75, $message);
84281c31
A
493
494 $x = $^R = 67;
495 'foot' =~ /foo(?{$x = 12; 75})[xy]/;
4f890a30 496 ok($^R eq '67' && $x eq '12', $message);
84281c31
A
497
498 $x = $^R = 67;
499 'foot' =~ /foo(?{ $^R + 12 })((?{ $x = 12; $^R + 17 })[xy])?/;
4f890a30 500 ok($^R eq '79' && $x eq '12', $message);
84281c31 501 }
3568d838 502
84281c31 503 {
fb85c044
KW
504 iseq qr/\b\v$/i, '(?^i:\b\v$)', 'qr/\b\v$/i';
505 iseq qr/\b\v$/s, '(?^s:\b\v$)', 'qr/\b\v$/s';
506 iseq qr/\b\v$/m, '(?^m:\b\v$)', 'qr/\b\v$/m';
507 iseq qr/\b\v$/x, '(?^x:\b\v$)', 'qr/\b\v$/x';
9de15fec 508 iseq qr/\b\v$/xism, '(?^msix:\b\v$)', 'qr/\b\v$/xism';
fb85c044 509 iseq qr/\b\v$/, '(?^:\b\v$)', 'qr/\b\v$/';
84281c31 510 }
3568d838 511
9de15fec
KW
512 { # Test that charset modifier work, and are interpolated
513 iseq qr/\b\v$/, '(?^:\b\v$)', 'Verify no locale, no unicode_strings gives default modifier';
514 iseq qr/(?l:\b\v$)/, '(?^:(?l:\b\v$))', 'Verify infix l modifier compiles';
515 iseq qr/(?u:\b\v$)/, '(?^:(?u:\b\v$))', 'Verify infix u modifier compiles';
516 iseq qr/(?l)\b\v$/, '(?^:(?l)\b\v$)', 'Verify (?l) compiles';
517 iseq qr/(?u)\b\v$/, '(?^:(?u)\b\v$)', 'Verify (?u) compiles';
518
519 my $dual = qr/\b\v$/;
520 use locale;
521 my $locale = qr/\b\v$/;
522 iseq $locale, '(?^l:\b\v$)', 'Verify has l modifier when compiled under use locale';
523 no locale;
524
525 use feature 'unicode_strings';
526 my $unicode = qr/\b\v$/;
527 iseq $unicode, '(?^u:\b\v$)', 'Verify has u modifier when compiled under unicode_strings';
528 iseq qr/abc$dual/, '(?^u:abc(?^:\b\v$))', 'Verify retains d meaning when interpolated under locale';
529 iseq qr/abc$locale/, '(?^u:abc(?^l:\b\v$))', 'Verify retains l when interpolated under unicode_strings';
530
531 no feature 'unicode_strings';
532 iseq qr/abc$locale/, '(?^:abc(?^l:\b\v$))', 'Verify retains l when interpolated outside locale and unicode strings';
533 iseq qr/def$unicode/, '(?^:def(?^u:\b\v$))', 'Verify retains u when interpolated outside locale and unicode strings';
534
535 use locale;
536 iseq qr/abc$dual/, '(?^l:abc(?^:\b\v$))', 'Verify retains d meaning when interpolated under locale';
537 iseq qr/abc$unicode/, '(?^l:abc(?^u:\b\v$))', 'Verify retains u when interpolated under locale';
538 }
539
3568d838 540
4f890a30 541
84281c31 542 {
4f890a30 543 my $message = "Look around";
84281c31 544 $_ = 'xabcx';
84281c31 545 foreach my $ans ('', 'c') {
4f890a30
NC
546 ok(/(?<=(?=a)..)((?=c)|.)/g, $message);
547 is($1, $ans, $message);
84281c31
A
548 }
549 }
3568d838 550
84281c31 551 {
4f890a30 552 my $message = "Empty clause";
84281c31
A
553 $_ = 'a';
554 foreach my $ans ('', 'a', '') {
4f890a30
NC
555 ok(/^|a|$/g, $message);
556 is($&, $ans, $message);
84281c31
A
557 }
558 }
3568d838 559
84281c31 560 {
84281c31 561 sub prefixify {
4f890a30
NC
562 my $message = "Prefixify";
563 {
84281c31 564 my ($v, $a, $b, $res) = @_;
4f890a30
NC
565 ok($v =~ s/\Q$a\E/$b/, $message);
566 is($v, $res, $message);
84281c31
A
567 }
568 }
3568d838 569
84281c31
A
570 prefixify ('/a/b/lib/arch', "/a/b/lib", 'X/lib', 'X/lib/arch');
571 prefixify ('/a/b/man/arch', "/a/b/man", 'X/man', 'X/man/arch');
572 }
3568d838 573
84281c31
A
574 {
575 $_ = 'var="foo"';
576 /(\")/;
577 ok $1 && /$1/, "Capture a quote";
578 }
3568d838 579
84281c31 580 {
84281c31 581 no warnings 'closure';
4f890a30 582 my $message = '(?{ $var } refers to package vars';
84281c31
A
583 package aa;
584 our $c = 2;
585 $::c = 3;
586 '' =~ /(?{ $c = 4 })/;
4f890a30
NC
587 main::is($c, 4, $message);
588 main::is($::c, 3, $message);
84281c31 589 }
3568d838 590
84281c31
A
591 {
592 must_die 'q(a:[b]:) =~ /[x[:foo:]]/',
88743d87 593 qr/POSIX class \[:[^:]+:\] unknown in regex/,
84281c31
A
594 'POSIX class [: :] must have valid name';
595
596 for my $d (qw [= .]) {
597 must_die "/[[${d}foo${d}]]/",
88743d87 598 qr/\QPOSIX syntax [$d $d] is reserved for future extensions/,
84281c31
A
599 "POSIX syntax [[$d $d]] is an error";
600 }
601 }
3568d838 602
3568d838 603
84281c31
A
604 {
605 # test if failure of patterns returns empty list
4f890a30 606 my $message = "Failed pattern returns empty list";
84281c31
A
607 $_ = 'aaa';
608 @_ = /bbb/;
4f890a30 609 is("@_", "", $message);
3568d838 610
84281c31 611 @_ = /bbb/g;
4f890a30 612 is("@_", "", $message);
a72deede 613
84281c31 614 @_ = /(bbb)/;
4f890a30 615 is("@_", "", $message);
a72deede 616
84281c31 617 @_ = /(bbb)/g;
4f890a30 618 is("@_", "", $message);
84281c31 619 }
a72deede 620
0f289c68 621
84281c31 622 {
4f890a30 623 my $message = '@- and @+ tests';
84281c31
A
624
625 /a(?=.$)/;
4f890a30
NC
626 is($#+, 0, $message);
627 is($#-, 0, $message);
628 is($+ [0], 2, $message);
629 is($- [0], 1, $message);
630 ok(!defined $+ [1] && !defined $- [1] &&
631 !defined $+ [2] && !defined $- [2], $message);
84281c31
A
632
633 /a(a)(a)/;
4f890a30
NC
634 is($#+, 2, $message);
635 is($#-, 2, $message);
636 is($+ [0], 3, $message);
637 is($- [0], 0, $message);
638 is($+ [1], 2, $message);
639 is($- [1], 1, $message);
640 is($+ [2], 3, $message);
641 is($- [2], 2, $message);
642 ok(!defined $+ [3] && !defined $- [3] &&
643 !defined $+ [4] && !defined $- [4], $message);
84281c31 644
54a4274e 645 # Exists has a special check for @-/@+ - bug 45147
4f890a30
NC
646 ok(exists $-[0], $message);
647 ok(exists $+[0], $message);
648 ok(exists $-[2], $message);
649 ok(exists $+[2], $message);
650 ok(!exists $-[3], $message);
651 ok(!exists $+[3], $message);
652 ok(exists $-[-1], $message);
653 ok(exists $+[-1], $message);
654 ok(exists $-[-3], $message);
655 ok(exists $+[-3], $message);
656 ok(!exists $-[-4], $message);
657 ok(!exists $+[-4], $message);
84281c31
A
658
659 /.(a)(b)?(a)/;
4f890a30
NC
660 is($#+, 3, $message);
661 is($#-, 3, $message);
662 is($+ [1], 2, $message);
663 is($- [1], 1, $message);
664 is($+ [3], 3, $message);
665 is($- [3], 2, $message);
666 ok(!defined $+ [2] && !defined $- [2] &&
667 !defined $+ [4] && !defined $- [4], $message);
84281c31
A
668
669
670 /.(a)/;
4f890a30
NC
671 is($#+, 1, $message);
672 is($#-, 1, $message);
673 is($+ [0], 2, $message);
674 is($- [0], 0, $message);
675 is($+ [1], 2, $message);
676 is($- [1], 1, $message);
677 ok(!defined $+ [2] && !defined $- [2] &&
678 !defined $+ [3] && !defined $- [3], $message);
84281c31
A
679
680 /.(a)(ba*)?/;
4f890a30
NC
681 is($#+, 2, $message);
682 is($#-, 1, $message);
84281c31 683 }
a72deede 684
a72deede 685
88743d87
NC
686 foreach ('$+[0] = 13', '$-[0] = 13', '@+ = (7, 6, 5)', '@- = qw (foo bar)') {
687 must_die($_, qr/^Modification of a read-only value attempted/,
688 'Elements of @- and @+ are read-only');
84281c31 689 }
a72deede 690
a72deede 691
84281c31 692 {
4f890a30 693 my $message = '\G testing';
84281c31
A
694 $_ = 'aaa';
695 pos = 1;
696 my @a = /\Ga/g;
4f890a30 697 is("@a", "a a", $message);
84281c31
A
698
699 my $str = 'abcde';
700 pos $str = 2;
4f890a30
NC
701 unlike($str, qr/^\G/, $message);
702 unlike($str, qr/^.\G/, $message);
703 like($str, qr/^..\G/, $message);
704 unlike($str, qr/^...\G/, $message);
705 ok($str =~ /\G../ && $& eq 'cd', $message);
84281c31 706
04934b6d 707 local $::TODO = $::running_as_thread;
4f890a30 708 ok($str =~ /.\G./ && $& eq 'bc', $message);
84281c31 709 }
a72deede 710
569b5e07 711
84281c31 712 {
4f890a30 713 my $message = 'pos inside (?{ })';
84281c31
A
714 my $str = 'abcde';
715 our ($foo, $bar);
4f890a30
NC
716 like($str, qr/b(?{$foo = $_; $bar = pos})c/, $message);
717 is($foo, $str, $message);
718 is($bar, 2, $message);
719 is(pos $str, undef, $message);
84281c31
A
720
721 undef $foo;
722 undef $bar;
723 pos $str = undef;
4f890a30
NC
724 ok($str =~ /b(?{$foo = $_; $bar = pos})c/g, $message);
725 is($foo, $str, $message);
726 is($bar, 2, $message);
727 is(pos $str, 3, $message);
84281c31
A
728
729 $_ = $str;
730 undef $foo;
731 undef $bar;
4f890a30
NC
732 like($_, qr/b(?{$foo = $_; $bar = pos})c/, $message);
733 is($foo, $str, $message);
734 is($bar, 2, $message);
84281c31
A
735
736 undef $foo;
737 undef $bar;
4f890a30
NC
738 ok(/b(?{$foo = $_; $bar = pos})c/g, $message);
739 is($foo, $str, $message);
740 is($bar, 2, $message);
741 is(pos, 3, $message);
84281c31
A
742
743 undef $foo;
744 undef $bar;
745 pos = undef;
746 1 while /b(?{$foo = $_; $bar = pos})c/g;
4f890a30
NC
747 is($foo, $str, $message);
748 is($bar, 2, $message);
749 is(pos, undef, $message);
84281c31
A
750
751 undef $foo;
752 undef $bar;
753 $_ = 'abcde|abcde';
4f890a30
NC
754 ok(s/b(?{$foo = $_; $bar = pos})c/x/g, $message);
755 is($foo, 'abcde|abcde', $message);
756 is($bar, 8, $message);
757 is($_, 'axde|axde', $message);
84281c31
A
758
759 # List context:
760 $_ = 'abcde|abcde';
761 our @res;
762 () = /([ace]).(?{push @res, $1,$2})([ce])(?{push @res, $1,$2})/g;
763 @res = map {defined $_ ? "'$_'" : 'undef'} @res;
4f890a30 764 is("@res", "'a' undef 'a' 'c' 'e' undef 'a' undef 'a' 'c'", $message);
84281c31
A
765
766 @res = ();
767 () = /([ace]).(?{push @res, $`,$&,$'})([ce])(?{push @res, $`,$&,$'})/g;
768 @res = map {defined $_ ? "'$_'" : 'undef'} @res;
4f890a30 769 is("@res", "'' 'ab' 'cde|abcde' " .
84281c31
A
770 "'' 'abc' 'de|abcde' " .
771 "'abcd' 'e|' 'abcde' " .
772 "'abcde|' 'ab' 'cde' " .
4f890a30 773 "'abcde|' 'abc' 'de'", $message);
84281c31 774 }
f33976b4 775
cce850e4 776
84281c31 777 {
4f890a30 778 my $message = '\G anchor checks';
84281c31
A
779 my $foo = 'aabbccddeeffgg';
780 pos ($foo) = 1;
781 {
04934b6d 782 local $::TODO = $::running_as_thread;
84281c31 783 no warnings 'uninitialized';
4f890a30
NC
784 ok($foo =~ /.\G(..)/g, $message);
785 is($1, 'ab', $message);
cce850e4 786
84281c31 787 pos ($foo) += 1;
4f890a30
NC
788 ok($foo =~ /.\G(..)/g, $message);
789 is($1, 'cc', $message);
cce850e4 790
84281c31 791 pos ($foo) += 1;
4f890a30
NC
792 ok($foo =~ /.\G(..)/g, $message);
793 is($1, 'de', $message);
cce850e4 794
4f890a30 795 ok($foo =~ /\Gef/g, $message);
84281c31 796 }
cce850e4 797
84281c31 798 undef pos $foo;
4f890a30
NC
799 ok($foo =~ /\G(..)/g, $message);
800 is($1, 'aa', $message);
cce850e4 801
4f890a30
NC
802 ok($foo =~ /\G(..)/g, $message);
803 is($1, 'bb', $message);
cce850e4 804
84281c31 805 pos ($foo) = 5;
4f890a30
NC
806 ok($foo =~ /\G(..)/g, $message);
807 is($1, 'cd', $message);
84281c31 808 }
cce850e4 809
cce850e4 810
84281c31
A
811 {
812 $_ = '123x123';
813 my @res = /(\d*|x)/g;
814 local $" = '|';
815 iseq "@res", "123||x|123|", "0 match in alternation";
816 }
cce850e4 817
d9f424b2 818
84281c31 819 {
4f890a30 820 my $message = "Match against temporaries (created via pp_helem())" .
84281c31 821 " is safe";
4f890a30
NC
822 ok({foo => "bar\n" . $^X} -> {foo} =~ /^(.*)\n/g, $message);
823 is($1, "bar", $message);
84281c31 824 }
75685a94 825
d9f424b2 826
84281c31 827 {
4f890a30 828 my $message = 'package $i inside (?{ }), ' .
84281c31
A
829 'saved substrings and changing $_';
830 our @a = qw [foo bar];
831 our @b = ();
832 s/(\w)(?{push @b, $1})/,$1,/g for @a;
4f890a30
NC
833 is("@b", "f o o b a r", $message);
834 is("@a", ",f,,o,,o, ,b,,a,,r,", $message);
84281c31 835
4f890a30 836 $message = 'lexical $i inside (?{ }), ' .
84281c31
A
837 'saved substrings and changing $_';
838 no warnings 'closure';
839 my @c = qw [foo bar];
840 my @d = ();
841 s/(\w)(?{push @d, $1})/,$1,/g for @c;
4f890a30
NC
842 is("@d", "f o o b a r", $message);
843 is("@c", ",f,,o,,o, ,b,,a,,r,", $message);
d9f424b2
JH
844 }
845
d9f424b2 846
84281c31 847 {
4f890a30 848 my $message = 'Brackets';
84281c31
A
849 our $brackets;
850 $brackets = qr {
851 { (?> [^{}]+ | (??{ $brackets }) )* }
852 }x;
853
4f890a30
NC
854 ok("{{}" =~ $brackets, $message);
855 is($&, "{}", $message);
856 ok("something { long { and } hairy" =~ $brackets, $message);
857 is($&, "{ and }", $message);
858 ok("something { long { and } hairy" =~ m/((??{ $brackets }))/, $message);
859 is($&, "{ and }", $message);
84281c31 860 }
a4c04bdc 861
e2d8ce26 862
84281c31
A
863 {
864 $_ = "a-a\nxbb";
865 pos = 1;
b33825c4 866 ok(!m/^-.*bb/mg, '$_ = "a-a\nxbb"; m/^-.*bb/mg');
84281c31 867 }
a4c04bdc 868
a4c04bdc 869
84281c31 870 {
4f890a30 871 my $message = '\G anchor checks';
84281c31
A
872 my $text = "aaXbXcc";
873 pos ($text) = 0;
4f890a30 874 ok($text !~ /\GXb*X/g, $message);
84281c31 875 }
a4c04bdc 876
a4c04bdc 877
84281c31
A
878 {
879 $_ = "xA\n" x 500;
b33825c4 880 unlike($_, qr/^\s*A/m, '$_ = "xA\n" x 500; /^\s*A/m"');
a4c04bdc 881
84281c31
A
882 my $text = "abc dbf";
883 my @res = ($text =~ /.*?(b).*?\b/g);
884 iseq "@res", "b b", '\b is not special';
987aaf07 885 }
a4c04bdc 886
a4c04bdc 887
84281c31 888 {
4f890a30 889 my $message = '\S, [\S], \s, [\s]';
84281c31 890 my @a = map chr, 0 .. 255;
9d45b377
YO
891 my @b = grep m/\S/, @a;
892 my @c = grep m/[^\s]/, @a;
4f890a30 893 is("@b", "@c", $message);
84281c31
A
894
895 @b = grep /\S/, @a;
896 @c = grep /[\S]/, @a;
4f890a30 897 is("@b", "@c", $message);
84281c31
A
898
899 @b = grep /\s/, @a;
900 @c = grep /[^\S]/, @a;
4f890a30 901 is("@b", "@c", $message);
84281c31
A
902
903 @b = grep /\s/, @a;
904 @c = grep /[\s]/, @a;
4f890a30 905 is("@b", "@c", $message);
84281c31
A
906 }
907 {
4f890a30 908 my $message = '\D, [\D], \d, [\d]';
84281c31
A
909 my @a = map chr, 0 .. 255;
910 my @b = grep /\D/, @a;
911 my @c = grep /[^\d]/, @a;
4f890a30 912 is("@b", "@c", $message);
84281c31
A
913
914 @b = grep /\D/, @a;
915 @c = grep /[\D]/, @a;
4f890a30 916 is("@b", "@c", $message);
84281c31
A
917
918 @b = grep /\d/, @a;
919 @c = grep /[^\D]/, @a;
4f890a30 920 is("@b", "@c", $message);
84281c31
A
921
922 @b = grep /\d/, @a;
923 @c = grep /[\d]/, @a;
4f890a30 924 is("@b", "@c", $message);
84281c31
A
925 }
926 {
4f890a30 927 my $message = '\W, [\W], \w, [\w]';
84281c31
A
928 my @a = map chr, 0 .. 255;
929 my @b = grep /\W/, @a;
930 my @c = grep /[^\w]/, @a;
4f890a30 931 is("@b", "@c", $message);
84281c31
A
932
933 @b = grep /\W/, @a;
934 @c = grep /[\W]/, @a;
4f890a30 935 is("@b", "@c", $message);
84281c31
A
936
937 @b = grep /\w/, @a;
938 @c = grep /[^\W]/, @a;
4f890a30 939 is("@b", "@c", $message);
84281c31
A
940
941 @b = grep /\w/, @a;
942 @c = grep /[\w]/, @a;
4f890a30 943 is("@b", "@c", $message);
84281c31 944 }
a4c04bdc 945
a4c04bdc 946
84281c31
A
947 {
948 # see if backtracking optimization works correctly
4f890a30
NC
949 my $message = 'Backtrack optimization';
950 like("\n\n", qr/\n $ \n/x, $message);
951 like("\n\n", qr/\n* $ \n/x, $message);
952 like("\n\n", qr/\n+ $ \n/x, $message);
953 like("\n\n", qr/\n? $ \n/x, $message);
954 like("\n\n", qr/\n*? $ \n/x, $message);
955 like("\n\n", qr/\n+? $ \n/x, $message);
956 like("\n\n", qr/\n?? $ \n/x, $message);
957 unlike("\n\n", qr/\n*+ $ \n/x, $message);
958 unlike("\n\n", qr/\n++ $ \n/x, $message);
959 like("\n\n", qr/\n?+ $ \n/x, $message);
84281c31 960 }
a4c04bdc 961
a4c04bdc 962
84281c31
A
963 {
964 package S;
965 use overload '""' => sub {'Object S'};
966 sub new {bless []}
0f289c68 967
4f890a30 968 my $message = "Ref stringification";
5895685f
NC
969 ::ok(do { \my $v} =~ /^SCALAR/, "Scalar ref stringification") or diag($message);
970 ::ok(do {\\my $v} =~ /^REF/, "Ref ref stringification") or diag($message);
971 ::ok([] =~ /^ARRAY/, "Array ref stringification") or diag($message);
972 ::ok({} =~ /^HASH/, "Hash ref stringification") or diag($message);
973 ::ok('S' -> new =~ /^Object S/, "Object stringification") or diag($message);
84281c31 974 }
a4c04bdc 975
a4c04bdc 976
84281c31 977 {
4f890a30
NC
978 my $message = "Test result of match used as match";
979 ok('a1b' =~ ('xyz' =~ /y/), $message);
980 is($`, 'a', $message);
981 ok('a1b' =~ ('xyz' =~ /t/), $message);
982 is($`, 'a', $message);
84281c31 983 }
a4c04bdc 984
a4c04bdc 985
84281c31 986 {
d728c370
NC
987 my $message = '"1" is not \s';
988 may_not_warn sub {ok ("1\n" x 102 !~ /^\s*\n/m, $message)}, "$message (did not warn)";
84281c31 989 }
a4c04bdc 990
a4c04bdc 991
84281c31 992 {
4f890a30 993 my $message = '\s, [[:space:]] and [[:blank:]]';
84281c31
A
994 my %space = (spc => " ",
995 tab => "\t",
996 cr => "\r",
997 lf => "\n",
998 ff => "\f",
999 # There's no \v but the vertical tabulator seems miraculously
1000 # be 11 both in ASCII and EBCDIC.
1001 vt => chr(11),
1002 false => "space");
1003
1004 my @space0 = sort grep {$space {$_} =~ /\s/ } keys %space;
1005 my @space1 = sort grep {$space {$_} =~ /[[:space:]]/} keys %space;
1006 my @space2 = sort grep {$space {$_} =~ /[[:blank:]]/} keys %space;
1007
4f890a30
NC
1008 is("@space0", "cr ff lf spc tab", $message);
1009 is("@space1", "cr ff lf spc tab vt", $message);
1010 is("@space2", "spc tab", $message);
84281c31 1011 }
a4c04bdc 1012
ff3f963a
KW
1013 {
1014 use charnames ":full";
4f890a30 1015 # Delayed interpolation of \N'
ff3f963a
KW
1016 my $r1 = qr/\N{THAI CHARACTER SARA I}/;
1017 my $s1 = "\x{E34}\x{E34}\x{E34}\x{E34}";
1018
1019 # Bug #56444
1020 ok $s1 =~ /$r1+/, 'my $r1 = qr/\N{THAI CHARACTER SARA I}/; my $s1 = "\x{E34}\x{E34}\x{E34}\x{E34}; $s1 =~ /$r1+/';
1021
1022 # Bug #62056
1023 ok "${s1}A" =~ m/$s1\N{LATIN CAPITAL LETTER A}/, '"${s1}A" =~ m/$s1\N{LATIN CAPITAL LETTER A}/';
1024
1025 ok "abbbbc" =~ m/\N{1}/ && $& eq "a", '"abbbbc" =~ m/\N{1}/ && $& eq "a"';
1026 ok "abbbbc" =~ m/\N{3,4}/ && $& eq "abbb", '"abbbbc" =~ m/\N{3,4}/ && $& eq "abbb"';
1027 }
1028
37820adc
KW
1029 {
1030 use charnames ":full";
4f890a30
NC
1031 my $message = '[perl #74982] Period coming after \N{}';
1032 ok("\x{ff08}." =~ m/\N{FULLWIDTH LEFT PARENTHESIS}./ && $& eq "\x{ff08}.", $message);
1033 ok("\x{ff08}." =~ m/[\N{FULLWIDTH LEFT PARENTHESIS}]./ && $& eq "\x{ff08}.", $message);
37820adc 1034 }
c9415951
YO
1035 {
1036 my $n= 50;
93f09d7b 1037 # this must be a high number and go from 0 to N, as the bug we are looking for doesn't
c9415951
YO
1038 # seem to be predictable. Slight changes to the test make it fail earlier or later.
1039 foreach my $i (0 .. $n)
1040 {
1041 my $str= "\n" x $i;
93f09d7b 1042 ok $str=~/.*\z/, "implicit MBOL check string disable does not break things length=$i";
c9415951
YO
1043 }
1044 }
92f3d482
YO
1045 {
1046 # we are actually testing that we dont die when executing these patterns
1047 use utf8;
1048 my $e = "Böck";
1049 ok(utf8::is_utf8($e),"got a unicode string - rt75680");
1050
1051 ok($e !~ m/.*?[x]$/, "unicode string against /.*?[x]\$/ - rt75680");
1052 ok($e !~ m/.*?\p{Space}$/i, "unicode string against /.*?\\p{space}\$/i - rt75680");
1053 ok($e !~ m/.*?[xyz]$/, "unicode string against /.*?[xyz]\$/ - rt75680");
1054 ok($e !~ m/(.*?)[,\p{isSpace}]+((?:\p{isAlpha}[\p{isSpace}\.]{1,2})+)\p{isSpace}*$/, "unicode string against big pattern - rt75680");
1055 }
1056 {
1057 # we are actually testing that we dont die when executing these patterns
1058 my $e = "B\x{f6}ck";
1059 ok(!utf8::is_utf8($e), "got a latin string - rt75680");
1060
1061 ok($e !~ m/.*?[x]$/, "latin string against /.*?[x]\$/ - rt75680");
1062 ok($e !~ m/.*?\p{Space}$/i, "latin string against /.*?\\p{space}\$/i - rt75680");
1063 ok($e !~ m/.*?[xyz]$/,"latin string against /.*?[xyz]\$/ - rt75680");
1064 ok($e !~ m/(.*?)[,\p{isSpace}]+((?:\p{isAlpha}[\p{isSpace}\.]{1,2})+)\p{isSpace}*$/,"latin string against big pattern - rt75680");
1065 }
c920e018
A
1066
1067 {
1068 #
1069 # Tests for bug 77414.
1070 #
1071
4f890a30 1072 my $message = '\p property after empty * match';
c920e018 1073 {
04934b6d 1074 local $::TODO = "Bug 77414";
4f890a30
NC
1075 like("1", qr/\s*\pN/, $message);
1076 like("-", qr/\s*\p{Dash}/, $message);
1077 like(" ", qr/\w*\p{Blank}/, $message);
c920e018
A
1078 }
1079
4f890a30
NC
1080 like("1", qr/\s*\pN+/, $message);
1081 like("-", qr/\s*\p{Dash}{1}/, $message);
1082 like(" ", qr/\w*\p{Blank}{1,4}/, $message);
c920e018
A
1083
1084 }
1085
7c17ea2f
KW
1086 SKIP: { # Some constructs with Latin1 characters cause a utf8 string not
1087 # to match itself in non-utf8
1088 if ($IS_EBCDIC) {
1089 skip "Needs to be customized to run on EBCDIC", 6;
1090 }
634c83a2
KW
1091 my $c = "\xc0";
1092 my $pattern = my $utf8_pattern = qr/((\xc0)+,?)/;
1093 utf8::upgrade($utf8_pattern);
1094 ok $c =~ $pattern, "\\xc0 =~ $pattern; Neither pattern nor target utf8";
d4e0b827 1095 ok $c =~ /$pattern/i, "\\xc0 =~ /$pattern/i; Neither pattern nor target utf8";
634c83a2 1096 ok $c =~ $utf8_pattern, "\\xc0 =~ $pattern; pattern utf8, target not";
d4e0b827 1097 ok $c =~ /$utf8_pattern/i, "\\xc0 =~ /$pattern/i; pattern utf8, target not";
634c83a2
KW
1098 utf8::upgrade($c);
1099 ok $c =~ $pattern, "\\xc0 =~ $pattern; target utf8, pattern not";
d4e0b827 1100 ok $c =~ /$pattern/i, "\\xc0 =~ /$pattern/i; target utf8, pattern not";
634c83a2 1101 ok $c =~ $utf8_pattern, "\\xc0 =~ $pattern; Both target and pattern utf8";
d4e0b827 1102 ok $c =~ /$utf8_pattern/i, "\\xc0 =~ /$pattern/i; Both target and pattern utf8";
634c83a2
KW
1103 }
1104
8cc86590
KW
1105 SKIP: { # Make sure can override the formatting
1106 if ($IS_EBCDIC) {
1107 skip "Needs to be customized to run on EBCDIC", 2;
1108 }
1109 use feature 'unicode_strings';
1110 ok "\xc0" =~ /\w/, 'Under unicode_strings: "\xc0" =~ /\w/';
1111 ok "\xc0" !~ /(?d:\w)/, 'Under unicode_strings: "\xc0" !~ /(?d:\w)/';
1112 }
1113
704f71be
B
1114 {
1115 # Test that a regex followed by an operator and/or a statement modifier work
1116 # These tests use string-eval so that it reports a clean error when it fails
1117 # (without the string eval the test script might be unparseable)
1118
1119 # Note: these test check the behaviour that currently is valid syntax
93f09d7b 1120 # If a new regex modifier is added and a test fails then there is a backwards-compatibility issue
704f71be
B
1121 # Note-2: a new deprecate warning was added for this with commit e6897b1a5db0410e387ccbf677e89fc4a1d8c97a
1122 # which indicate that this syntax will be removed in 5.16.
1123 # When this happens the tests can be removed
1124
1125 no warnings 'syntax';
1126 iseq( eval q#my $r = "a" =~ m/a/lt 2;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by lt");
1127 iseq( eval q#my $r = "a" =~ m/a/le 1;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by le");
1128 iseq( eval q#my $r = "a" =~ m/a/eq 1;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by eq");
1129 iseq( eval q#my $r = "a" =~ m/a/ne 0;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by ne");
1130 iseq( eval q#my $r = "a" =~ m/a/and 1;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by and");
1131 iseq( eval q#my $r = "a" =~ m/a/unless 0;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by unless");
1132 iseq( eval q#my $c = 1; my $r; $r = "a" =~ m/a/while $c--;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by while");
1133 iseq( eval q#my $c = 0; my $r; $r = "a" =~ m/a/until $c++;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by until");
1134 iseq( eval q#my $r; $r = "a" =~ m/a/for 1;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by for");
1135 iseq( eval q#my $r; $r = "a" =~ m/a/foreach 1;"eval_ok $r"#, "eval_ok 1", "regex (m//) followed by foreach");
1136
1137 iseq( eval q#my $t = "a"; my $r = $t =~ s/a//lt 2;"eval_ok $r"#, "eval_ok 1", "regex (s///) followed by lt");
1138 iseq( eval q#my $t = "a"; my $r = $t =~ s/a//le 1;"eval_ok $r"#, "eval_ok 1", "regex (s///) followed by le");
1139 iseq( eval q#my $t = "a"; my $r = $t =~ s/a//ne 0;"eval_ok $r"#, "eval_ok 1", "regex (s///) followed by ne");
1140 iseq( eval q#my $t = "a"; my $r = $t =~ s/a//and 1;"eval_ok $r"#, "eval_ok 1", "regex (s///) followed by and");
1141 iseq( eval q#my $t = "a"; my $r = $t =~ s/a//unless 0;"eval_ok $r"#, "eval_ok 1", "regex (s///) followed by unless");
1142
1143 iseq( eval q#my $c = 1; my $r; my $t = "a"; $r = $t =~ s/a//while $c--;"eval_ok $r"#, "eval_ok 1", "regex (s///) followed by while");
1144 iseq( eval q#my $c = 0; my $r; my $t = "a"; $r = $t =~ s/a//until $c++;"eval_ok $r"#, "eval_ok 1", "regex (s///) followed by until");
1145 iseq( eval q#my $r; my $t = "a"; $r = $t =~ s/a//for 1;"eval_ok $r"#, "eval_ok 1", "regex (s///) followed by for");
1146 iseq( eval q#my $r; my $t = "a"; $r = $t =~ s/a//for 1;"eval_ok $r"#, "eval_ok 1", "regex (s///) followed by foreach");
1147 }
1148
5b6010b3
YO
1149 {
1150 my $str= "\x{100}";
1151 chop $str;
1152 my $qr= qr/$str/;
1153 iseq( "$qr", "(?^:)", "Empty pattern qr// stringifies to (?^:) with unicode flag enabled - Bug #80212" );
1154 $str= "";
1155 $qr= qr/$str/;
1156 iseq( "$qr", "(?^:)", "Empty pattern qr// stringifies to (?^:) with unicode flag disabled - Bug #80212" )
1157
1158 }
1159
72aa120d 1160 {
04934b6d 1161 local $::TODO = "[perl #38133]";
72aa120d
KW
1162
1163 "A" =~ /(((?:A))?)+/;
1164 my $first = $2;
1165
1166 "A" =~ /(((A))?)+/;
1167 my $second = $2;
1168
1169 iseq($first, $second);
1170 }
1171
99ca48e1
DM
1172 {
1173 # RT #3516: \G in a m//g expression causes problems
1174 my $count = 0;
1175 while ("abc" =~ m/(\G[ac])?/g) {
1176 last if $count++ > 10;
1177 }
1178 ok($count < 10, 'RT #3516 A');
1179
1180 $count = 0;
1181 while ("abc" =~ m/(\G|.)[ac]/g) {
1182 last if $count++ > 10;
1183 }
1184 ok($count < 10, 'RT #3516 B');
1185
1186 $count = 0;
1187 while ("abc" =~ m/(\G?[ac])?/g) {
1188 last if $count++ > 10;
1189 }
1190 ok($count < 10, 'RT #3516 C');
1191 }
1192
1193
1194
84281c31
A
1195} # End of sub run_tests
1196
11971;