22 ab*bc abbbbc y $& abbbbc
23 ab*bc abbbbc y $-[0] 0
24 ab*bc abbbbc y $+[0] 6
28 .{3,4} abbbbc y $& abbb
29 .{3,4} abbbbc y $-[0] 0
30 .{3,4} abbbbc y $+[0] 4
31 ab{0,}bc abbbbc y $& abbbbc
32 ab{0,}bc abbbbc y $-[0] 0
33 ab{0,}bc abbbbc y $+[0] 6
40 ab+bc abbbbc y $& abbbbc
41 ab+bc abbbbc y $-[0] 0
42 ab+bc abbbbc y $+[0] 6
43 ab{1,}bc abbbbc y $& abbbbc
44 ab{1,}bc abbbbc y $-[0] 0
45 ab{1,}bc abbbbc y $+[0] 6
46 ab{1,3}bc abbbbc y $& abbbbc
47 ab{1,3}bc abbbbc y $-[0] 0
48 ab{1,3}bc abbbbc y $+[0] 6
49 ab{3,4}bc abbbbc y $& abbbbc
50 ab{3,4}bc abbbbc y $-[0] 0
51 ab{3,4}bc abbbbc y $+[0] 6
52 ab{4,5}bc abbbbc n - -
55 ab{0,1}bc abc y $& abc
74 [a][b][d] abd y $& abd
77 (?i:.[b].) abd y $& abd
83 a[b-a] - c - Invalid [] range \"b-a\"
84 a[]b - c - Unmatched [
140 *a - c - Quantifier follows nothing
141 (|*)b - c - Quantifier follows nothing
142 (*)b - c - Unknown verb
144 a\ - c - Search pattern not terminated
145 a\(b a(b y $&-$1 a(b-
149 abc) - c - Unmatched )
150 (abc - c - Unmatched (
151 ((a)) abc y $&-$1-$2 a-a-a
152 ((a)) abc y $-[0]-$-[1]-$-[2] 0-0-0
153 ((a)) abc y $+[0]-$+[1]-$+[2] 1-1-1
156 (a)b(c) abc y $&-$1-$2 abc-a-c
157 (a)b(c) abc y $-[0]-$-[1]-$-[2] 0-0-2
158 (a)b(c) abc y $+[0]-$+[1]-$+[2] 3-1-3
159 a+b+c aabbabc y $& abc
160 a{1,}b{1,}c aabbabc y $& abc
161 a** - c - Nested quantifiers
162 a.+?c abcabc y $& abc
163 (a+|b)* ab y $&-$1 ab-b
168 (a+|b){0,} ab y $&-$1 ab-b
169 (a+|b)+ ab y $&-$1 ab-b
170 (a+|b){1,} ab y $&-$1 ab-b
171 (a+|b)? ab y $&-$1 a-a
172 (a+|b){0,1} ab y $&-$1 a-a
177 ([abc])*d abbbcd y $&-$1 abbbcd-c
178 ([abc])*bcd abcd y $&-$1 abcd-a
180 (a|b|c|d|e)f ef y $&-$1 ef-e
181 (a|b|c|d|e)f ef y $-[0] 0
182 (a|b|c|d|e)f ef y $+[0] 2
183 (a|b|c|d|e)f ef y $-[1] 0
184 (a|b|c|d|e)f ef y $+[1] 1
185 abcd*efg abcdefg y $& abcdefg
186 ab* xabyabbbz y $& ab
188 (ab|cd)e abcde y $&-$1 cde-cd
189 [abhgefdc]ij hij y $& hij
190 ^(ab|cd)e abcde n x$1y xy
191 (abc|)ef abcdef y $&-$1 ef-
192 (a|b)c*d abcd y $&-$1 bcd-b
193 (ab|ab*)bc abc y $&-$1 abc-a
194 a([bc]*)c* abc y $&-$1 abc-bc
195 a([bc]*)(c*d) abcd y $&-$1-$2 abcd-bc-d
196 a([bc]*)(c*d) abcd y $-[0] 0
197 a([bc]*)(c*d) abcd y $+[0] 4
198 a([bc]*)(c*d) abcd y $-[1] 1
199 a([bc]*)(c*d) abcd y $+[1] 3
200 a([bc]*)(c*d) abcd y $-[2] 3
201 a([bc]*)(c*d) abcd y $+[2] 4
202 a([bc]+)(c*d) abcd y $&-$1-$2 abcd-bc-d
203 a([bc]*)(c+d) abcd y $&-$1-$2 abcd-b-cd
204 a([bc]*)(c+d) abcd y $-[0] 0
205 a([bc]*)(c+d) abcd y $+[0] 4
206 a([bc]*)(c+d) abcd y $-[1] 1
207 a([bc]*)(c+d) abcd y $+[1] 2
208 a([bc]*)(c+d) abcd y $-[2] 2
209 a([bc]*)(c+d) abcd y $+[2] 4
210 a[bcd]*dcdcde adcdcde y $& adcdcde
211 a[bcd]+dcdcde adcdcde n - -
212 (ab|a)b*c abc y $&-$1 abc-ab
213 (ab|a)b*c abc y $-[0] 0
214 (ab|a)b*c abc y $+[0] 3
215 (ab|a)b*c abc y $-[1] 0
216 (ab|a)b*c abc y $+[1] 2
217 ((a)(b)c)(d) abcd y $1-$2-$3-$4 abc-a-b-d
218 ((a)(b)c)(d) abcd y $-[0] 0
219 ((a)(b)c)(d) abcd y $+[0] 4
220 ((a)(b)c)(d) abcd y $-[1] 0
221 ((a)(b)c)(d) abcd y $+[1] 3
222 ((a)(b)c)(d) abcd y $-[2] 0
223 ((a)(b)c)(d) abcd y $+[2] 1
224 ((a)(b)c)(d) abcd y $-[3] 1
225 ((a)(b)c)(d) abcd y $+[3] 2
226 ((a)(b)c)(d) abcd y $-[4] 3
227 ((a)(b)c)(d) abcd y $+[4] 4
228 [a-zA-Z_][a-zA-Z0-9_]* alpha y $& alpha
229 ^a(bc+|b[eh])g|.h$ abh y $&-$1 bh-
230 (bc+d$|ef*g.|h?i(j|k)) effgz y $&-$1-$2 effgz-effgz-
231 (bc+d$|ef*g.|h?i(j|k)) ij y $&-$1-$2 ij-ij-j
232 (bc+d$|ef*g.|h?i(j|k)) effg n - -
233 (bc+d$|ef*g.|h?i(j|k)) bcdd n - -
234 (bc+d$|ef*g.|h?i(j|k)) reffgz y $&-$1-$2 effgz-effgz-
235 ((((((((((a)))))))))) a y $10 a
236 ((((((((((a)))))))))) a y $-[0] 0
237 ((((((((((a)))))))))) a y $+[0] 1
238 ((((((((((a)))))))))) a y $-[10] 0
239 ((((((((((a)))))))))) a y $+[10] 1
240 ((((((((((a))))))))))\10 aa y $& aa
241 ((((((((((a))))))))))${bang} aa n - -
242 ((((((((((a))))))))))${bang} a! y $& a!
243 (((((((((a))))))))) a y $& a
244 multiple words of text uh-uh n - -
245 multiple words multiple words, yeah y $& multiple words
246 (.*)c(.*) abcde y $&-$1-$2 abcde-ab-de
247 \((.*), (.*)\) (a, b) y ($2, $1) (b, a)
249 abcd abcd y $&-\$&-\\$& abcd-\$&-\\abcd
250 a(bc)d abcd y $1-\$1-\\$1 bc-\$1-\\bc
252 (abc)\1 abcabc y $1 abc
253 ([a-c]*)\1 abcabc y $1 abc
254 \1 - c - Reference to nonexistent group
255 \2 - c - Reference to nonexistent group
256 \g1 - c - Reference to nonexistent group
257 \g-1 - c - Reference to nonexistent or unclosed group
258 \g{1} - c - Reference to nonexistent group
259 \g{-1} - c - Reference to nonexistent or unclosed group
260 \g0 - c - Reference to invalid group 0
261 \g-0 - c - Reference to invalid group 0
262 \g{0} - c - Reference to invalid group 0
263 \g{-0} - c - Reference to invalid group 0
266 (a)|\2 - c - Reference to nonexistent group
267 (([a-c])b*?\2)* ababbbcbc y $&-$1-$2 ababb-bb-b
268 (([a-c])b*?\2){3} ababbbcbc y $&-$1-$2 ababbbcbc-cbc-c
269 ((\3|b)\2(a)x)+ aaxabxbaxbbx n - -
270 ((\3|b)\2(a)x)+ aaaxabaxbaaxbbax y $&-$1-$2-$3 bbax-bbax-b-a
271 ((\3|b)\2(a)){2,} bbaababbabaaaaabbaaaabba y $&-$1-$2-$3 bbaaaabba-bba-b-a
282 'abc'i XABCY y $& ABC
283 'abc'i ABABC y $& ABC
285 'ab*bc'i ABC y $& ABC
286 'ab*bc'i ABBC y $& ABBC
287 'ab*?bc'i ABBBBC y $& ABBBBC
288 'ab{0,}?bc'i ABBBBC y $& ABBBBC
289 'ab+?bc'i ABBC y $& ABBC
292 'ab{1,}bc'i ABQ n - -
293 'ab+bc'i ABBBBC y $& ABBBBC
294 'ab{1,}?bc'i ABBBBC y $& ABBBBC
295 'ab{1,3}?bc'i ABBBBC y $& ABBBBC
296 'ab{3,4}?bc'i ABBBBC y $& ABBBBC
297 'ab{4,5}?bc'i ABBBBC n - -
298 'ab??bc'i ABBC y $& ABBC
299 'ab??bc'i ABC y $& ABC
300 'ab{0,1}?bc'i ABC y $& ABC
301 'ab??bc'i ABBBBC n - -
302 'ab??c'i ABC y $& ABC
303 'ab{0,1}?c'i ABC y $& ABC
304 '^abc$'i ABC y $& ABC
306 '^abc'i ABCC y $& ABC
308 'abc$'i AABC y $& ABC
313 'a.*?c'i AXYZC y $& AXYZC
316 'a[bc]d'i ABD y $& ABD
318 'a[b-d]e'i ACE y $& ACE
319 'a[b-d]'i AAC y $& AC
322 'a[b-a]'i - c - Invalid [] range \"b-a\"
323 'a[]b'i - c - Unmatched [
324 'a['i - c - Unmatched [
326 'a[]]b'i A]B y $& A]B
327 'a[^bc]d'i AED y $& AED
329 'a[^-b]c'i ADC y $& ADC
332 'a[^]b]c'i ADC y $& ADC
334 'ab|cd'i ABCD y $& AB
335 '()ef'i DEF y $&-$1 EF-
336 '*a'i - c - Quantifier follows nothing
337 '(|*)b'i - c - Quantifier follows nothing
338 '(*)b'i - c - Unknown verb
340 'a\'i - c - Search pattern not terminated
341 'a\(b'i A(B y $&-$1 A(B-
343 'a\(*b'i A((B y $& A((B
344 'a\\b'i A\\B y $& A\\B
345 'abc)'i - c - Unmatched )
346 '(abc'i - c - Unmatched (
347 '((a))'i ABC y $&-$1-$2 A-A-A
348 '(a)b(c)'i ABC y $&-$1-$2 ABC-A-C
349 'a+b+c'i AABBABC y $& ABC
350 'a{1,}b{1,}c'i AABBABC y $& ABC
351 'a**'i - c - Nested quantifiers
352 'a.+?c'i ABCABC y $& ABC
353 'a.*?c'i ABCABC y $& ABC
354 'a.{0,5}?c'i ABCABC y $& ABC
355 '(a+|b)*'i AB y $&-$1 AB-B
356 '(a+|b){0,}'i AB y $&-$1 AB-B
357 '(a+|b)+'i AB y $&-$1 AB-B
358 '(a+|b){1,}'i AB y $&-$1 AB-B
359 '(a+|b)?'i AB y $&-$1 A-A
360 '(a+|b){0,1}'i AB y $&-$1 A-A
361 '(a+|b){0,1}?'i AB y $&-$1 -
362 ')('i - c - Unmatched )
363 '[^ab]*'i CDE y $& CDE
366 '([abc])*d'i ABBBCD y $&-$1 ABBBCD-C
367 '([abc])*bcd'i ABCD y $&-$1 ABCD-A
368 'a|b|c|d|e'i E y $& E
369 '(a|b|c|d|e)f'i EF y $&-$1 EF-E
370 'abcd*efg'i ABCDEFG y $& ABCDEFG
371 'ab*'i XABYABBBZ y $& AB
372 'ab*'i XAYABBBZ y $& A
373 '(ab|cd)e'i ABCDE y $&-$1 CDE-CD
374 '[abhgefdc]ij'i HIJ y $& HIJ
375 '^(ab|cd)e'i ABCDE n x$1y XY
376 '(abc|)ef'i ABCDEF y $&-$1 EF-
377 '(a|b)c*d'i ABCD y $&-$1 BCD-B
378 '(ab|ab*)bc'i ABC y $&-$1 ABC-A
379 'a([bc]*)c*'i ABC y $&-$1 ABC-BC
380 'a([bc]*)(c*d)'i ABCD y $&-$1-$2 ABCD-BC-D
381 'a([bc]+)(c*d)'i ABCD y $&-$1-$2 ABCD-BC-D
382 'a([bc]*)(c+d)'i ABCD y $&-$1-$2 ABCD-B-CD
383 'a[bcd]*dcdcde'i ADCDCDE y $& ADCDCDE
384 'a[bcd]+dcdcde'i ADCDCDE n - -
385 '(ab|a)b*c'i ABC y $&-$1 ABC-AB
386 '((a)(b)c)(d)'i ABCD y $1-$2-$3-$4 ABC-A-B-D
387 '[a-zA-Z_][a-zA-Z0-9_]*'i ALPHA y $& ALPHA
388 '^a(bc+|b[eh])g|.h$'i ABH y $&-$1 BH-
389 '(bc+d$|ef*g.|h?i(j|k))'i EFFGZ y $&-$1-$2 EFFGZ-EFFGZ-
390 '(bc+d$|ef*g.|h?i(j|k))'i IJ y $&-$1-$2 IJ-IJ-J
391 '(bc+d$|ef*g.|h?i(j|k))'i EFFG n - -
392 '(bc+d$|ef*g.|h?i(j|k))'i BCDD n - -
393 '(bc+d$|ef*g.|h?i(j|k))'i REFFGZ y $&-$1-$2 EFFGZ-EFFGZ-
394 '((((((((((a))))))))))'i A y $10 A
395 '((((((((((a))))))))))\10'i AA y $& AA
396 '((((((((((a))))))))))${bang}'i AA n - -
397 '((((((((((a))))))))))${bang}'i A! y $& A!
398 '(((((((((a)))))))))'i A y $& A
399 '(?:(?:(?:(?:(?:(?:(?:(?:(?:(a))))))))))'i A y $1 A
400 '(?:(?:(?:(?:(?:(?:(?:(?:(?:(a|b|c))))))))))'i C y $1 C
401 'multiple words of text'i UH-UH n - -
402 'multiple words'i MULTIPLE WORDS, YEAH y $& MULTIPLE WORDS
403 '(.*)c(.*)'i ABCDE y $&-$1-$2 ABCDE-AB-DE
404 '\((.*), (.*)\)'i (A, B) y ($2, $1) (B, A)
406 'abcd'i ABCD y $&-\$&-\\$& ABCD-\$&-\\ABCD
407 'a(bc)d'i ABCD y $1-\$1-\\$1 BC-\$1-\\BC
409 '(abc)\1'i ABCABC y $1 ABC
410 '([a-c]*)\1'i ABCABC y $1 ABC
413 a(?=c|d). abad y $& ad
414 a(?:b|c|d)(.) ace y $1 e
415 a(?:b|c|d)*(.) ace y $1 e
416 a(?:b|c|d)+?(.) ace y $1 e
417 a(?:b|c|d)+?(.) acdbcdbe y $1 d
418 a(?:b|c|d)+(.) acdbcdbe y $1 e
419 a(?:b|c|d){2}(.) acdbcdbe y $1 b
420 a(?:b|c|d){4,5}(.) acdbcdbe y $1 b
421 a(?:b|c|d){4,5}?(.) acdbcdbe y $1 d
422 ((foo)|(bar))* foobar y $1-$2-$3 bar-foo-bar
423 :(?: - c - Sequence (? incomplete
424 a(?:b|c|d){6,7}(.) acdbcdbe y $1 e
425 a(?:b|c|d){6,7}?(.) acdbcdbe y $1 e
426 a(?:b|c|d){5,6}(.) acdbcdbe y $1 e
427 a(?:b|c|d){5,6}?(.) acdbcdbe y $1 b
428 a(?:b|c|d){5,7}(.) acdbcdbe y $1 e
429 a(?:b|c|d){5,7}?(.) acdbcdbe y $1 b
430 a(?:b|(c|e){1,2}?|d)+?(.) ace y $1$2 ce
432 ^([^a-z])|(\^)$ . y $1 .
434 ^(a\1?){4}$ aaaaaaaaaa y $1 aaaa
435 ^(a\1?){4}$ aaaaaaaaa n - -
436 ^(a\1?){4}$ aaaaaaaaaaa n - -
437 ^(a(?(1)\1)){4}$ aaaaaaaaaa y $1 aaaa
438 ^(a(?(1)\1)){4}$ aaaaaaaaa n - -
439 ^(a(?(1)\1)){4}$ aaaaaaaaaaa n - -
440 ((a{4})+) aaaaaaaaa y $1 aaaaaaaa
441 (((aa){2})+) aaaaaaaaaa y $1 aaaaaaaa
442 (((a{2}){2})+) aaaaaaaaaa y $1 aaaaaaaa
443 (?:(f)(o)(o)|(b)(a)(r))* foobar y $1:$2:$3:$4:$5:$6 f:o:o:b:a:r
451 (?<%)b - c - Sequence (?<%...) not recognized
452 (?:..)*a aba y $& aba
454 ^(?:b|a(?=(.)))*\1 abc y $& ab
457 ^((a|b)+)*ax aax y $1 a
458 ^((a|bc)+)*ax aax y $1 a
461 (?:(?i)a)b ab y $& ab
462 ((?i)a)b ab y $&:$1 ab:a
463 (?:(?i)a)b Ab y $& Ab
464 ((?i)a)b Ab y $&:$1 Ab:A
468 ((?i:a))b ab y $&:$1 ab:a
470 ((?i:a))b Ab y $&:$1 Ab:A
473 '(?:(?-i)a)b'i ab y $& ab
474 '((?-i)a)b'i ab y $&:$1 ab:a
475 '(?:(?-i)a)b'i aB y $& aB
476 '((?-i)a)b'i aB y $&:$1 aB:a
477 '(?:(?-i)a)b'i Ab n - -
478 '((?-i)a)b'i Ab n - -
479 '(?:(?-i)a)b'i aB y $& aB
480 '((?-i)a)b'i aB y $1 a
481 '(?:(?-i)a)b'i AB n - -
482 '((?-i)a)b'i AB n - -
483 '(?-i:a)b'i ab y $& ab
484 '((?-i:a))b'i ab y $&:$1 ab:a
485 '(?-i:a)b'i aB y $& aB
486 '((?-i:a))b'i aB y $&:$1 aB:a
488 '((?-i:a))b'i Ab n - -
489 '(?-i:a)b'i aB y $& aB
490 '((?-i:a))b'i aB y $1 a
492 '((?-i:a))b'i AB n - -
493 '((?-i:a.))b'i a\nB n - -
494 '((?s-i:a.))b'i a\nB y $1 a\n
495 '((?s-i:a.))b'i B\nB n - -
496 (?:c|d)(?:)(?:a(?:)(?:b)(?:b(?:))(?:b(?:)(?:b))) cabbbb y $& cabbbb
497 (?:c|d)(?:)(?:aaaaaaaa(?:)(?:bbbbbbbb)(?:bbbbbbbb(?:))(?:bbbbbbbb(?:)(?:bbbbbbbb))) caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb y $& caaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
498 '(ab)\d\1'i Ab4ab y $1 Ab
499 '(ab)\d\1'i ab4Ab y $1 ab
500 foo\w*\d{4}baz foobar1234baz y $& foobar1234baz
502 a(?{)b - c - Sequence (?{...}) not terminated or not {}-balanced
503 a(?{{})b - c - Sequence (?{...}) not terminated or not {}-balanced
505 a(?{"{"})b - c - Sequence (?{...}) not terminated or not {}-balanced
506 a(?{"\{"})b cabd y $& ab
507 a(?{"{"}})b - c - Unmatched right curly bracket
508 a(?{$::bl="\{"}).b caxbd y $::bl {
509 x(~~)*(?:(?:F)?)? x~~ y - -
510 ^a(?#xxx){3}c aaac y $& aaac
511 '^a (?#xxx) (?#yyy) {3}c'x aaac y $& aaac
512 (?<![cd])b dbcb n - -
513 (?<![cd])[ab] dbaacb y $& a
514 (?<!(c|d))b dbcb n - -
515 (?<!(c|d))[ab] dbaacb y $& a
516 (?<!cd)[ab] cdaccb y $& b
517 ^(?:a?b?)*$ a-- n - -
518 ((?s)^a(.))((?m)^b$) a\nb\nc\n y $1;$2;$3 a\n;\n;b
519 ((?m)^b$) a\nb\nc\n y $1 b
521 (?m)^(b) a\nb\n y $1 b
522 ((?m)^b) a\nb\n y $1 b
523 \n((?m)^b) a\nb\n y $1 b
524 ((?s).)c(?!.) a\nb\nc\n y $1 \n
525 ((?s).)c(?!.) a\nb\nc\n y $1:$& \n:\nc
526 ((?s)b.)c(?!.) a\nb\nc\n y $1 b\n
527 ((?s)b.)c(?!.) a\nb\nc\n y $1:$& b\n:b\nc
530 ((?m)^b) a\nb\nc\n y $1 b
533 (x)?(?(1)a|b) a n - -
534 (x)?(?(1)b|a) a y $& a
535 ()?(?(1)b|a) a y $& a
537 ()?(?(1)a|b) a y $& a
538 ^(\()?blah(?(1)(\)))$ (blah) y $2 )
539 ^(\()?blah(?(1)(\)))$ blah y ($2) ()
540 ^(\()?blah(?(1)(\)))$ blah) n - -
541 ^(\()?blah(?(1)(\)))$ (blah n - -
542 ^(\(+)?blah(?(1)(\)))$ (blah) y $2 )
543 ^(\(+)?blah(?(1)(\)))$ blah y ($2) ()
544 ^(\(+)?blah(?(1)(\)))$ blah) n - -
545 ^(\(+)?blah(?(1)(\)))$ (blah n - -
546 (?(1?)a|b) a c - Switch condition not recognized
547 (?(1)a|b|c) a c - Switch (?(condition)... contains too many branches
549 (?(?{0})b|a) a y $& a
551 (?(?{1})a|b) a y $& a
556 (?=(a+?))(\1ab) aaab y $2 aab
557 ^(?=(a+?))\1ab aaab n - -
558 (\w+:)+ one: y $1 one:
560 (?=(a+?))(\1ab) aaab y $2 aab
561 ^(?=(a+?))\1ab aaab n - -
562 ([\w:]+::)?(\w+)$ abcd: n - -
563 ([\w:]+::)?(\w+)$ abcd y $1-$2 -abcd
564 ([\w:]+::)?(\w+)$ xy:z:::abcd y $1-$2 xy:z:::-abcd
565 ^[^bcd]*(c+) aexycd y $1 c
567 ([\w:]+::)?(\w+)$ abcd: n - -
568 ([\w:]+::)?(\w+)$ abcd y $1-$2 -abcd
569 ([\w:]+::)?(\w+)$ xy:z:::abcd y $1-$2 xy:z:::-abcd
570 ^[^bcd]*(c+) aexycd y $1 c
571 (?{$a=2})a*aa(?{local$a=$a+1})k*c(?{$b=$a}) yaaxxaaaacd y $b 3
572 (?{$a=2})(a(?{local$a=$a+1}))*aak*c(?{$b=$a}) yaaxxaaaacd y $b 4
575 ([[:]+) a:[b]: y $1 :[
576 ([[=]+) a=[b]= y $1 =[
577 ([[.]+) a.[b]. y $1 .[
578 [a[:xyz: - c - Unmatched [
579 [a[:xyz:] - c - POSIX class [:xyz:] unknown
580 [a[:]b[:c] abc y $& abc
581 ([a[:xyz:]b]+) pbaq c - POSIX class [:xyz:] unknown
582 [a[:]b[:c] abc y $& abc
583 ([[:alpha:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd
584 ([[:alnum:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy
585 ([[:ascii:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__-- ${nulnul}
586 ([[:cntrl:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ${nulnul}
587 ([[:digit:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 01
588 ([[:graph:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__--
589 ([[:lower:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 cd
590 ([[:print:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__--
591 ([[:punct:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 __--
592 ([[:space:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1
593 ([[:word:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__
594 ([[:upper:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 AB
595 ([[:xdigit:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01
596 ([[:^alpha:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 01
597 ([[:^alnum:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 __-- ${nulnul}${ffff}
598 ([[:^ascii:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ${ffff}
599 ([[:^cntrl:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__--
600 ([[:^digit:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd
601 ([[:^lower:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 AB
602 ([[:^print:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ${nulnul}${ffff}
603 ([[:^punct:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy
604 ([[:^space:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 ABcd01Xy__--
605 ([[:^word:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 -- ${nulnul}${ffff}
606 ([[:^upper:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 cd01
607 ([[:^xdigit:]]+) ABcd01Xy__-- ${nulnul}${ffff} y $1 Xy__-- ${nulnul}${ffff}
608 [[:foo:]] - c - POSIX class [:foo:] unknown
609 [[:^foo:]] - c - POSIX class [:^foo:] unknown
610 ((?>a+)b) aaab y $1 aaab
611 (?>(a+))b aaab y $1 aaa
612 ((?>[^()]+)|\([^()]*\))+ ((abc(ade)ufh()()x y $& abc(ade)ufh()()x
613 (?<=x+)y - c - Variable length lookbehind not implemented
614 a{37,17} - c - Can't do {n,m} with n > m
624 '\Z'm a\nb\n y $-[0] 3
625 '\z'm a\nb\n y $-[0] 4
626 '$'m a\nb\n y $-[0] 1
627 '\Z'm b\na\n y $-[0] 3
628 '\z'm b\na\n y $-[0] 4
629 '$'m b\na\n y $-[0] 1
644 'a$'m a\nb\n y $-[0] 0
645 'a\Z'm b\na\n y $-[0] 2
647 'a$'m b\na\n y $-[0] 2
648 'a\Z'm b\na y $-[0] 2
649 'a\z'm b\na y $-[0] 2
654 aa\Z b\naa\n y $-[0] 2
656 aa$ b\naa\n y $-[0] 2
660 'aa\Z'm aa\nb\n n - -
661 'aa\z'm aa\nb\n n - -
662 'aa$'m aa\nb\n y $-[0] 0
663 'aa\Z'm b\naa\n y $-[0] 2
664 'aa\z'm b\naa\n n - -
665 'aa$'m b\naa\n y $-[0] 2
666 'aa\Z'm b\naa y $-[0] 2
667 'aa\z'm b\naa y $-[0] 2
668 'aa$'m b\naa y $-[0] 2
678 'aa\Z'm ac\nb\n n - -
679 'aa\z'm ac\nb\n n - -
681 'aa\Z'm b\nac\n n - -
682 'aa\z'm b\nac\n n - -
696 'aa\Z'm ca\nb\n n - -
697 'aa\z'm ca\nb\n n - -
699 'aa\Z'm b\nca\n n - -
700 'aa\z'm b\nca\n n - -
708 ab\Z b\nab\n y $-[0] 2
710 ab$ b\nab\n y $-[0] 2
714 'ab\Z'm ab\nb\n n - -
715 'ab\z'm ab\nb\n n - -
716 'ab$'m ab\nb\n y $-[0] 0
717 'ab\Z'm b\nab\n y $-[0] 2
718 'ab\z'm b\nab\n n - -
719 'ab$'m b\nab\n y $-[0] 2
720 'ab\Z'm b\nab y $-[0] 2
721 'ab\z'm b\nab y $-[0] 2
722 'ab$'m b\nab y $-[0] 2
732 'ab\Z'm ac\nb\n n - -
733 'ab\z'm ac\nb\n n - -
735 'ab\Z'm b\nac\n n - -
736 'ab\z'm b\nac\n n - -
750 'ab\Z'm ca\nb\n n - -
751 'ab\z'm ca\nb\n n - -
753 'ab\Z'm b\nca\n n - -
754 'ab\z'm b\nca\n n - -
762 abb\Z b\nabb\n y $-[0] 2
764 abb$ b\nabb\n y $-[0] 2
765 abb\Z b\nabb y $-[0] 2
766 abb\z b\nabb y $-[0] 2
767 abb$ b\nabb y $-[0] 2
768 'abb\Z'm abb\nb\n n - -
769 'abb\z'm abb\nb\n n - -
770 'abb$'m abb\nb\n y $-[0] 0
771 'abb\Z'm b\nabb\n y $-[0] 2
772 'abb\z'm b\nabb\n n - -
773 'abb$'m b\nabb\n y $-[0] 2
774 'abb\Z'm b\nabb y $-[0] 2
775 'abb\z'm b\nabb y $-[0] 2
776 'abb$'m b\nabb y $-[0] 2
786 'abb\Z'm ac\nb\n n - -
787 'abb\z'm ac\nb\n n - -
788 'abb$'m ac\nb\n n - -
789 'abb\Z'm b\nac\n n - -
790 'abb\z'm b\nac\n n - -
791 'abb$'m b\nac\n n - -
804 'abb\Z'm ca\nb\n n - -
805 'abb\z'm ca\nb\n n - -
806 'abb$'m ca\nb\n n - -
807 'abb\Z'm b\nca\n n - -
808 'abb\z'm b\nca\n n - -
809 'abb$'m b\nca\n n - -
814 a*abc?xyz+pqr{3}ab{2,}xy{4,5}pq{0,6}AB{0,}zz x n - -
815 a(?{$a=2;$b=3;($b)=$a})b yabz y $b 2
816 round\(((?>[^()]+))\) _I(round(xs * sz),1) y $1 xs * sz
817 '((?x:.) )' x y $1- x -
818 '((?-x:.) )'x x y $1- x-
819 foo.bart foo.bart y - -
820 '^d[x][x][x]'m abcd\ndxxx y - -
821 .X(.+)+X bbbbXcXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y - -
822 .X(.+)+XX bbbbXcXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y - -
823 .XX(.+)+X bbbbXXcXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y - -
824 .X(.+)+X bbbbXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa n - -
825 .X(.+)+XX bbbbXXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa n - -
826 .XX(.+)+X bbbbXXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa n - -
827 .X(.+)+[X] bbbbXcXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y - -
828 .X(.+)+[X][X] bbbbXcXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y - -
829 .XX(.+)+[X] bbbbXXcXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y - -
830 .X(.+)+[X] bbbbXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa n - -
831 .X(.+)+[X][X] bbbbXXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa n - -
832 .XX(.+)+[X] bbbbXXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa n - -
833 .[X](.+)+[X] bbbbXcXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y - -
834 .[X](.+)+[X][X] bbbbXcXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y - -
835 .[X][X](.+)+[X] bbbbXXcXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y - -
836 .[X](.+)+[X] bbbbXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa n - -
837 .[X](.+)+[X][X] bbbbXXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa n - -
838 .[X][X](.+)+[X] bbbbXXXaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa n - -
840 ([a-\d]+) za-9z y $1 a-9
841 ([\d-z]+) a0-za y $1 0-z
842 ([\d-\s]+) a0- z y $1 0-
843 ([a-[:digit:]]+) za-9z y $1 a-9
844 ([[:digit:]-z]+) =0-z= y $1 0-z
845 ([[:digit:]-[:alpha:]]+) =0-z= y $1 0-z
847 (\d+\.\d+) 3.1415926 y $1 3.1415926
848 (\ba.{0,10}br) have a web browser y $1 a web br
849 '\.c(pp|xx|c)?$'i Changes n - -
850 '\.c(pp|xx|c)?$'i IO.c y - -
851 '(\.c(pp|xx|c)?$)'i IO.c y $1 .c
853 '^\S\s+aa$'m \nx aa y - -
855 ^([ab]*?)(b)?(c)$ abac y -$2- --
856 (\w)?(abc)\1b abcab n - -
857 ^(?:.,){2}c a,b,c y - -
858 ^(.,){2}c a,b,c y $1 b,
859 ^(?:[^,]*,){2}c a,b,c y - -
860 ^([^,]*,){2}c a,b,c y $1 b,
861 ^([^,]*,){3}d aaa,b,c,d y $1 c,
862 ^([^,]*,){3,}d aaa,b,c,d y $1 c,
863 ^([^,]*,){0,3}d aaa,b,c,d y $1 c,
864 ^([^,]{1,3},){3}d aaa,b,c,d y $1 c,
865 ^([^,]{1,3},){3,}d aaa,b,c,d y $1 c,
866 ^([^,]{1,3},){0,3}d aaa,b,c,d y $1 c,
867 ^([^,]{1,},){3}d aaa,b,c,d y $1 c,
868 ^([^,]{1,},){3,}d aaa,b,c,d y $1 c,
869 ^([^,]{1,},){0,3}d aaa,b,c,d y $1 c,
870 ^([^,]{0,3},){3}d aaa,b,c,d y $1 c,
871 ^([^,]{0,3},){3,}d aaa,b,c,d y $1 c,
872 ^([^,]{0,3},){0,3}d aaa,b,c,d y $1 c,
874 '(?!\A)x'm a\nxb\n y - -
875 ^(a(b)?)+$ aba y -$1-$2- -a--
876 ^(aa(bb)?)+$ aabbaa y -$1-$2- -aa--
877 '^.{9}abc.*\n'm 123\nabcabcabcabc\n y - -
879 ^(a)?(?(1)a|b)+$ a n - -
880 ^(a\1?)(a\1?)(a\2?)(a\3?)$ aaaaaa y $1,$2,$3,$4 a,aa,a,aa
881 ^(a\1?){4}$ aaaaaa y $1 aa
882 ^(0+)?(?:x(1))? x1 y - -
883 ^([0-9a-fA-F]+)(?:x([0-9a-fA-F]+)?)(?:x([0-9a-fA-F]+))? 012cxx0190 y - -
884 ^(b+?|a){1,2}c bbbac y $1 a
885 ^(b+?|a){1,2}c bbbbac y $1 a
886 \((\w\. \w+)\) cd. (A. Tw) y -$1- -A. Tw-
887 ((?:aaaa|bbbb)cccc)? aaaacccc y - -
888 ((?:aaaa|bbbb)cccc)? bbbbcccc y - -
889 (a)?(a)+ a y $1:$2 :a -
890 (ab)?(ab)+ ab y $1:$2 :ab -
891 (abc)?(abc)+ abc y $1:$2 :abc -
894 ^(a(??{"(?!)"})|(a)(?{1}))b ab y $2 a # [ID 20010811.006]
895 ab(?i)cd AbCd n - - # [ID 20010809.023]
897 (A|B)*(?(1)(CD)|(CD)) CD y $2-$3 -CD
898 (A|B)*(?(1)(CD)|(CD)) ABCD y $2-$3 CD-
899 (A|B)*?(?(1)(CD)|(CD)) CD y $2-$3 -CD # [ID 20010803.016]
900 (A|B)*?(?(1)(CD)|(CD)) ABCD y $2-$3 CD-
901 '^(o)(?!.*\1)'i Oo n - -
902 (.*)\d+\1 abc12bc y $1 bc
903 (?m:(foo\s*$)) foo\n bar y $1 foo
905 (.*)(?=c) abcd y $1 ab
906 (.*)(?=c)c abcd yB $1 ab
907 (.*)(?=b|c) abcd y $1 ab
908 (.*)(?=b|c)c abcd y $1 ab
909 (.*)(?=c|b) abcd y $1 ab
910 (.*)(?=c|b)c abcd y $1 ab
911 (.*)(?=[bc]) abcd y $1 ab
912 (.*)(?=[bc])c abcd yB $1 ab
913 (.*)(?<=b) abcd y $1 ab
914 (.*)(?<=b)c abcd y $1 ab
915 (.*)(?<=b|c) abcd y $1 abc
916 (.*)(?<=b|c)c abcd y $1 ab
917 (.*)(?<=c|b) abcd y $1 abc
918 (.*)(?<=c|b)c abcd y $1 ab
919 (.*)(?<=[bc]) abcd y $1 abc
920 (.*)(?<=[bc])c abcd y $1 ab
922 (.*?)(?=c) abcd y $1 ab
923 (.*?)(?=c)c abcd yB $1 ab
924 (.*?)(?=b|c) abcd y $1 a
925 (.*?)(?=b|c)c abcd y $1 ab
926 (.*?)(?=c|b) abcd y $1 a
927 (.*?)(?=c|b)c abcd y $1 ab
928 (.*?)(?=[bc]) abcd y $1 a
929 (.*?)(?=[bc])c abcd yB $1 ab
930 (.*?)(?<=b) abcd y $1 ab
931 (.*?)(?<=b)c abcd y $1 ab
932 (.*?)(?<=b|c) abcd y $1 ab
933 (.*?)(?<=b|c)c abcd y $1 ab
934 (.*?)(?<=c|b) abcd y $1 ab
935 (.*?)(?<=c|b)c abcd y $1 ab
936 (.*?)(?<=[bc]) abcd y $1 ab
937 (.*?)(?<=[bc])c abcd y $1 ab
940 a(b)?? abc y <$1> <> # undef [perl #16773]
941 (\d{1,3}\.){3,} 128.134.142.8 y <$1> <142.> # [perl #18019]
942 ^.{3,4}(.+)\1\z foobarbar y $1 bar # 16 tests for [perl #23171]
943 ^(?:f|o|b){3,4}(.+)\1\z foobarbar y $1 bar
944 ^.{3,4}((?:b|a|r)+)\1\z foobarbar y $1 bar
945 ^(?:f|o|b){3,4}((?:b|a|r)+)\1\z foobarbar y $1 bar
946 ^.{3,4}(.+?)\1\z foobarbar y $1 bar
947 ^(?:f|o|b){3,4}(.+?)\1\z foobarbar y $1 bar
948 ^.{3,4}((?:b|a|r)+?)\1\z foobarbar y $1 bar
949 ^(?:f|o|b){3,4}((?:b|a|r)+?)\1\z foobarbar y $1 bar
950 ^.{2,3}?(.+)\1\z foobarbar y $1 bar
951 ^(?:f|o|b){2,3}?(.+)\1\z foobarbar y $1 bar
952 ^.{2,3}?((?:b|a|r)+)\1\z foobarbar y $1 bar
953 ^(?:f|o|b){2,3}?((?:b|a|r)+)\1\z foobarbar y $1 bar
954 ^.{2,3}?(.+?)\1\z foobarbar y $1 bar
955 ^(?:f|o|b){2,3}?(.+?)\1\z foobarbar y $1 bar
956 ^.{2,3}?((?:b|a|r)+?)\1\z foobarbar y $1 bar
957 ^(?:f|o|b){2,3}?((?:b|a|r)+?)\1\z foobarbar y $1 bar
958 .*a(?!(b|cd)*e).*f ......abef n - - # [perl #23030]
959 x(?# x c - Sequence (?#... not terminated
960 :x(?#: x c - Sequence (?#... not terminated
961 (WORDS|WORD)S WORDS y $1 WORD
962 (X.|WORDS|X.|WORD)S WORDS y $1 WORD
963 (WORDS|WORLD|WORD)S WORDS y $1 WORD
964 (X.|WORDS|WORD|Y.)S WORDS y $1 WORD
965 (foo|fool|x.|money|parted)$ fool y $1 fool
966 (x.|foo|fool|x.|money|parted|y.)$ fool y $1 fool
967 (foo|fool|money|parted)$ fool y $1 fool
968 (foo|fool|x.|money|parted)$ fools n - -
969 (x.|foo|fool|x.|money|parted|y.)$ fools n - -
970 (foo|fool|money|parted)$ fools n - -
971 (a|aa|aaa||aaaa|aaaaa|aaaaaa)(b|c) aaaaaaaaaaaaaaab y $1$2 aaaaaab
972 (a|aa|aaa||aaaa|aaaaa|aaaaaa)(??{$1&&""})(b|c) aaaaaaaaaaaaaaab y $1$2 aaaaaab
973 (a|aa|aaa|aaaa|aaaaa|aaaaaa)(??{$1&&"foo"})(b|c) aaaaaaaaaaaaaaab n - -
974 ^(a*?)(?!(aa|aaaa)*$) aaaaaaaaaaaaaaaaaaaa y $1 a # [perl #34195]
975 ^(a*?)(?!(aa|aaaa)*$)(?=a\z) aaaaaaaa y $1 aaaaaaa
976 ^(.)\s+.$(?(1)) A B y $1 A # [perl #37688]
977 (?:r?)*?r|(.{2,4}) abcde y $1 abcd
978 (?!)+?|(.{2,4}) abcde y $1 abcd
979 ^(a*?)(?!(a{6}|a{5})*$) aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa y $+[1] 12 # super-linear cache bug may return 18
980 ^((?>(?:aa)?b)?) aab y $1 aab
981 ^((?:aa)*)(?:X+((?:\d+|-)(?:X+(.+))?))?$ aaaaX5 y $1 aaaa
982 X(A|B||C|D)Y XXXYYY y $& XY # Trie w/ NOTHING
983 (?i:X([A]|[B]|y[Y]y|[D]|)Y) XXXYYYB y $& XY # Trie w/ NOTHING
984 ^([a]{1})*$ aa y $1 a
985 a(?!b(?!c))(..) abababc y $1 bc # test nested negatives
986 a(?!b(?=a))(..) abababc y $1 bc # test nested lookaheads
987 a(?!b(?!c(?!d(?!e))))...(.) abxabcdxabcde y $1 e
988 X(?!b+(?!(c+)*(?!(c+)*d))).*X aXbbbbbbbcccccccccccccaaaX y - -
989 ^(XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP
990 ^(XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P): ZEQQQX: y $1 ZEQQQX
991 ^([TUV]+|XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP
992 ^([TUV]+|XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P): ZEQQQX: y $1 ZEQQQX
993 ^([TUV]+|XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P|[MKJ]): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP
994 ^([TUV]+|XXXXXXXXXX|YYYYYYYYYY|Z.Q*X|Z[TE]Q*P|[MKJ]): ZEQQQX: y $1 ZEQQQX
995 ^(XXX|YYY|Z.Q*X|Z[TE]Q*P): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP
996 ^(XXX|YYY|Z.Q*X|Z[TE]Q*P): ZEQQQX: y $1 ZEQQQX
997 ^([TUV]+|XXX|YYY|Z.Q*X|Z[TE]Q*P): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP
998 ^([TUV]+|XXX|YYY|Z.Q*X|Z[TE]Q*P): ZEQQQX: y $1 ZEQQQX
999 ^([TUV]+|XXX|YYY|Z.Q*X|Z[TE]Q*P|[MKJ]): ZEQQQQQQQQQQQQQQQQQQP: y $1 ZEQQQQQQQQQQQQQQQQQQP
1000 ^([TUV]+|XXX|YYY|Z.Q*X|Z[TE]Q*P|[MKJ]): ZEQQQX: y $1 ZEQQQX
1001 X(?:ABCF[cC]x*|ABCD|ABCF):(?:DIT|DID|DIM) XABCFCxxxxxxxxxx:DIM y $& XABCFCxxxxxxxxxx:DIM
1002 (((ABCD|ABCE|ABCF)))(A|B|C[xy]*): ABCFCxxxxxxxxxx:DIM y $& ABCFCxxxxxxxxxx:
1004 (?=foo) XfooY y pos 1
1005 .*(?=foo) XfooY y pos 1
1006 (?<=foo) foo y pos 3
1007 (?<=foo) XfooY y pos 4
1008 .*(?<=foo) foo y pos 3
1009 .*(?<=foo) XfooY y pos 4
1010 (?<=foo)Y XfooY y pos 5
1011 o(?<=foo)Y ..XfooY.. y pos 7
1012 X(?=foo)f ..XfooY.. y pos 4
1013 X(?=foo) ..XfooY.. y pos 3
1014 X(?<=foo.)[YZ] ..XfooXY.. y pos 8
1015 (?=XY*foo) Xfoo y pos 0
1016 ^(?=XY*foo) Xfoo y pos 0
1017 ^(??{"a+"})a aa y $& aa
1018 ^(?:(??{"a+"})|b)a aa y $& aa
1019 ^(??{chr 0x100}).$ \x{100}\x{100} y $& \x{100}\x{100}
1020 ^(??{q(\x{100})}). \x{100}\x{100} y $& \x{100}\x{100}
1021 ^(??{q(.+)})\x{100} \x{100}\x{100} y $& \x{100}\x{100}
1022 ^(??{q(.)})\x{100} \x{100}\x{100} y $& \x{100}\x{100}
1023 ^(??{chr 0x100})\xbb \x{100}\x{bb} y $& \x{100}\x{bb}
1024 ^(.)(??{"(.)(.)"})(.)$ abcd y $1-$2 a-d
1025 ^(.)(??{"(bz+|.)(.)"})(.)$ abcd y $1-$2 a-d
1026 ^(.)((??{"(.)(cz+)"})|.) abcd y $1-$2 a-b
1027 ^a(?>(??{q(b)}))(??{q(c)})d abcd y - -
1028 ^x(??{""})+$ x y $& x
1029 ^(<(?:[^<>]+|(?3)|(?1))*>)()(!>!>!>)$ <<!>!>!>><>>!>!>!> y $1 <<!>!>!>><>>
1030 ^(<(?:[^<>]+|(?1))*>)$ <<><<<><>>>> y $1 <<><<<><>>>>
1031 ((?2)*)([fF]o+) fooFoFoo y $1-$2 fooFo-Foo
1032 (<(?:[^<>]+|(?R))*>) <<><<<><>>>> y $1 <<><<<><>>>>
1033 (?<n>foo|bar|baz) snofooewa y $1 foo
1034 (?<n>foo|bar|baz) snofooewa y $+{n} foo
1035 (?<n>foo|bar|baz)(?<m>[ew]+) snofooewa y $+{n} foo
1036 (?<n>foo|bar|baz)(?<m>[ew]+) snofooewa y $+{m} ew
1037 (?<n>foo)|(?<n>bar)|(?<n>baz) snofooewa y $+{n} foo
1038 (?<n>foo)(??{ $+{n} }) snofooefoofoowaa y $+{n} foo
1039 (?P<n>foo|bar|baz) snofooewa y $1 foo
1040 (?P<n>foo|bar|baz) snofooewa y $+{n} foo
1041 (?P<n>foo|bar|baz)(?P<m>[ew]+) snofooewa y $+{n} foo
1042 (?P<n>foo|bar|baz)(?P<m>[ew]+) snofooewa y $+{m} ew
1043 (?P<n>foo)|(?P<n>bar)|(?P<n>baz) snofooewa y $+{n} foo
1044 (?P<n>foo)(??{ $+{n} }) snofooefoofoowaa y $+{n} foo
1045 (?P<=n>foo|bar|baz) snofooewa c - Sequence (?P<=...) not recognized
1046 (?P<!n>foo|bar|baz) snofooewa c - Sequence (?P<!...) not recognized
1047 (?PX<n>foo|bar|baz) snofooewa c - Sequence (?PX<...) not recognized
1048 /(?'n'foo|bar|baz)/ snofooewa y $1 foo
1049 /(?'n'foo|bar|baz)/ snofooewa y $+{n} foo
1050 /(?'n'foo|bar|baz)(?'m'[ew]+)/ snofooewa y $+{n} foo
1051 /(?'n'foo|bar|baz)(?'m'[ew]+)/ snofooewa y $+{m} ew
1052 /(?'n'foo)|(?'n'bar)|(?<n>baz)/ snobazewa y $+{n} baz
1053 /(?'n'foo)(??{ $+{n} })/ snofooefoofoowaa y $+{n} foo
1054 /(?'n'foo)\k<n>/ ..foofoo.. y $1 foo
1055 /(?'n'foo)\k<n>/ ..foofoo.. y $+{n} foo
1056 /(?<n>foo)\k'n'/ ..foofoo.. y $1 foo
1057 /(?<n>foo)\k'n'/ ..foofoo.. y $+{n} foo
1058 /(?:(?<n>foo)|(?<n>bar))\k<n>/ ..barbar.. y $+{n} bar
1059 /^(?'main'<(?:[^<>]+|(?&crap)|(?&main))*>)(?'empty')(?'crap'!>!>!>)$/ <<!>!>!>><>>!>!>!> y $+{main} <<!>!>!>><>>
1060 /^(?'main'<(?:[^<>]+|(?&main))*>)$/ <<><<<><>>>> y $1 <<><<<><>>>>
1061 /(?'first'(?&second)*)(?'second'[fF]o+)/ fooFoFoo y $+{first}-$+{second} fooFo-Foo
1062 (?<A>foo)?(?(<A>)bar|nada) foobar y $+{A} foo
1063 (?<A>foo)?(?(<A>)bar|nada) foo-barnada y $& nada
1064 (?<A>foo)?(?(1)bar|nada) foo-barnada y $& nada
1065 (?<A>foo(?(R)bar))?(?1) foofoobar y $1 foo
1066 (?<A>foo(?(R)bar))?(?1) foofoobar y $& foofoobar
1067 (x)(?<A>foo(?(R&A)bar))?(?&A) xfoofoobar y $2 foo
1068 (x)(?<A>foo(?(R&A)bar))?(?&A) xfoofoobar y $& xfoofoobar
1069 (x)(?<A>foo(?(R2)bar))?(?&A) xfoofoobar y $2 foo
1070 (x)(?<A>foo(?(R2)bar))?(?&A) xfoofoobar y $& xfoofoobar
1071 (?1)(?(DEFINE)(blah)) blah y $& blah
1072 /^(?<PAL>(?<CHAR>.)((?&PAL)|.?)\k<CHAR>)$/ madamimadam y $& madamimadam
1073 /^(?<PAL>(?<CHAR>.)((?&PAL)|.?)\k<CHAR>)$/ madamiamadam n - -
1074 /(a)?((?1))(fox)/ aafox y $1-$2-$3 a-a-fox
1075 /(a)*((?1))(fox)/ aafox y $1-$2-$3 a-a-fox
1076 /(a)+((?1))(fox)/ aafox y $1-$2-$3 a-a-fox
1077 /(a){1,100}((?1))(fox)/ aafox y $1-$2-$3 a-a-fox
1078 /(a){0,100}((?1))(fox)/ aafox y $1-$2-$3 a-a-fox
1079 /(ab)?((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox
1080 /(ab)*((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox
1081 /(ab)+((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox
1082 /(ab){1,100}((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox
1083 /(ab){0,100}((?1))(fox)/ ababfox y $1-$2-$3 ab-ab-fox
1084 # possessive captures
1087 a{1,5}+a aaaaa n - -
1089 a++b aaaaab y $& aaaaab
1090 a*+b aaaaab y $& aaaaab
1091 a{1,5}+b aaaaab y $& aaaaab
1093 fooa++a fooaaaaa n - -
1094 fooa*+a fooaaaaa n - -
1095 fooa{1,5}+a fooaaaaa n - -
1097 fooa++b fooaaaaab y $& fooaaaaab
1098 fooa*+b fooaaaaab y $& fooaaaaab
1099 fooa{1,5}+b fooaaaaab y $& fooaaaaab
1100 fooa?+b fooab y $& fooab
1101 (?:aA)++(?:aA) aAaAaAaAaA n - aAaAaAaAaA
1102 (aA)++(aA) aAaAaAaAaA n - aAaAaAaAaA
1103 (aA|bB)++(aA|bB) aAaAbBaAbB n - aAaAbBaAbB
1104 (?:aA|bB)++(?:aA|bB) aAbBbBbBaA n - aAbBbBbBaA
1105 (?:aA)*+(?:aA) aAaAaAaAaA n - aAaAaAaAaA
1106 (aA)*+(aA) aAaAaAaAaA n - aAaAaAaAaA
1107 (aA|bB)*+(aA|bB) aAaAbBaAaA n - aAaAbBaAaA
1108 (?:aA|bB)*+(?:aA|bB) aAaAaAbBaA n - aAaAaAbBaA
1109 (?:aA){1,5}+(?:aA) aAaAaAaAaA n - aAaAaAaAaA
1110 (aA){1,5}+(aA) aAaAaAaAaA n - aAaAaAaAaA
1111 (aA|bB){1,5}+(aA|bB) aAaAbBaAaA n - aAaAbBaAaA
1112 (?:aA|bB){1,5}+(?:aA|bB) bBbBbBbBbB n - bBbBbBbBbB
1113 (?:aA)?+(?:aA) aAb n - aAb
1114 (aA)?+(aA) aAb n - aAb
1115 (aA|bB)?+(aA|bB) bBb n - bBb
1116 (?:aA|bB)?+(?:aA|bB) aAb n - aAb
1117 (?:aA)++b aAaAaAaAaAb y $& aAaAaAaAaAb
1118 (aA)++b aAaAaAaAaAb y $& aAaAaAaAaAb
1119 (aA|bB)++b aAbBaAaAbBb y $& aAbBaAaAbBb
1120 (?:aA|bB)++b aAbBbBaAaAb y $& aAbBbBaAaAb
1121 (?:aA)*+b aAaAaAaAaAb y $& aAaAaAaAaAb
1122 (aA)*+b aAaAaAaAaAb y $& aAaAaAaAaAb
1123 (aA|bB)*+b bBbBbBbBbBb y $& bBbBbBbBbBb
1124 (?:aA|bB)*+b bBaAbBbBaAb y $& bBaAbBbBaAb
1125 (?:aA){1,5}+b aAaAaAaAaAb y $& aAaAaAaAaAb
1126 (aA){1,5}+b aAaAaAaAaAb y $& aAaAaAaAaAb
1127 (aA|bB){1,5}+b bBaAbBaAbBb y $& bBaAbBaAbBb
1128 (?:aA|bB){1,5}+b aAbBaAbBbBb y $& aAbBaAbBbBb
1129 (?:aA)?+b aAb y $& aAb
1130 (aA)?+b aAb y $& aAb
1131 (aA|bB)?+b bBb y $& bBb
1132 (?:aA|bB)?+b bBb y $& bBb
1133 foo(?:aA)++(?:aA) fooaAaAaAaAaA n - fooaAaAaAaAaA
1134 foo(aA)++(aA) fooaAaAaAaAaA n - fooaAaAaAaAaA
1135 foo(aA|bB)++(aA|bB) foobBbBbBaAaA n - foobBbBbBaAaA
1136 foo(?:aA|bB)++(?:aA|bB) fooaAaAaAaAaA n - fooaAaAaAaAaA
1137 foo(?:aA)*+(?:aA) fooaAaAaAaAaA n - fooaAaAaAaAaA
1138 foo(aA)*+(aA) fooaAaAaAaAaA n - fooaAaAaAaAaA
1139 foo(aA|bB)*+(aA|bB) foobBaAbBaAaA n - foobBaAbBaAaA
1140 foo(?:aA|bB)*+(?:aA|bB) fooaAaAbBbBaA n - fooaAaAbBbBaA
1141 foo(?:aA){1,5}+(?:aA) fooaAaAaAaAaA n - fooaAaAaAaAaA
1142 foo(aA){1,5}+(aA) fooaAaAaAaAaA n - fooaAaAaAaAaA
1143 foo(aA|bB){1,5}+(aA|bB) fooaAbBbBaAaA n - fooaAbBbBaAaA
1144 foo(?:aA|bB){1,5}+(?:aA|bB) fooaAbBbBaAbB n - fooaAbBbBaAbB
1145 foo(?:aA)?+(?:aA) fooaAb n - fooaAb
1146 foo(aA)?+(aA) fooaAb n - fooaAb
1147 foo(aA|bB)?+(aA|bB) foobBb n - foobBb
1148 foo(?:aA|bB)?+(?:aA|bB) fooaAb n - fooaAb
1149 foo(?:aA)++b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb
1150 foo(aA)++b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb
1151 foo(aA|bB)++b foobBaAbBaAbBb y $& foobBaAbBaAbBb
1152 foo(?:aA|bB)++b fooaAaAbBaAaAb y $& fooaAaAbBaAaAb
1153 foo(?:aA)*+b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb
1154 foo(aA)*+b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb
1155 foo(aA|bB)*+b foobBbBaAaAaAb y $& foobBbBaAaAaAb
1156 foo(?:aA|bB)*+b foobBaAaAbBaAb y $& foobBaAaAbBaAb
1157 foo(?:aA){1,5}+b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb
1158 foo(aA){1,5}+b fooaAaAaAaAaAb y $& fooaAaAaAaAaAb
1159 foo(aA|bB){1,5}+b foobBaAaAaAaAb y $& foobBaAaAaAaAb
1160 foo(?:aA|bB){1,5}+b fooaAbBaAbBbBb y $& fooaAbBaAbBbBb
1161 foo(?:aA)?+b fooaAb y $& fooaAb
1162 foo(aA)?+b fooaAb y $& fooaAb
1163 foo(aA|bB)?+b foobBb y $& foobBb
1164 foo(?:aA|bB)?+b foobBb y $& foobBb
1166 ([^()]++|\([^()]*\))+ ((abc(ade)ufh()()x y $& abc(ade)ufh()()x
1167 round\(([^()]++)\) _I(round(xs * sz),1) y $1 xs * sz
1169 (foo[1x]|bar[2x]|baz[3x])+y foo1bar2baz3y y $1 baz3
1170 (foo[1x]|bar[2x]|baz[3x])+y foo1bar2baz3y y $& foo1bar2baz3y
1171 (foo[1x]|bar[2x]|baz[3x])*y foo1bar2baz3y y $1 baz3
1172 (foo[1x]|bar[2x]|baz[3x])*y foo1bar2baz3y y $& foo1bar2baz3y
1174 ([yX].|WORDS|[yX].|WORD)S WORDS y $1 WORD
1175 (WORDS|WORLD|WORD)S WORDS y $1 WORD
1176 ([yX].|WORDS|WORD|[xY].)S WORDS y $1 WORD
1177 (foo|fool|[zx].|money|parted)$ fool y $1 fool
1178 ([zx].|foo|fool|[zq].|money|parted|[yx].)$ fool y $1 fool
1179 (foo|fool|[zx].|money|parted)$ fools n - -
1180 ([zx].|foo|fool|[qx].|money|parted|[py].)$ fools n - -
1182 ([yX].|WORDS|[yX].|WORD)+S WORDS y $1 WORD
1183 (WORDS|WORLD|WORD)+S WORDS y $1 WORD
1184 ([yX].|WORDS|WORD|[xY].)+S WORDS y $1 WORD
1185 (foo|fool|[zx].|money|parted)+$ fool y $1 fool
1186 ([zx].|foo|fool|[zq].|money|parted|[yx].)+$ fool y $1 fool
1187 (foo|fool|[zx].|money|parted)+$ fools n - -
1188 ([zx].|foo|fool|[qx].|money|parted|[py].)+$ fools n - -
1190 (x|y|z[QW])+(longish|loquatious|excessive|overblown[QW])+ xyzQzWlongishoverblownW y $1-$2 zW-overblownW
1191 (x|y|z[QW])*(longish|loquatious|excessive|overblown[QW])* xyzQzWlongishoverblownW y $1-$2 zW-overblownW
1192 (x|y|z[QW]){1,5}(longish|loquatious|excessive|overblown[QW]){1,5} xyzQzWlongishoverblownW y $1-$2 zW-overblownW
1194 (x|y|z[QW])++(longish|loquatious|excessive|overblown[QW])++ xyzQzWlongishoverblownW y $1-$2 zW-overblownW
1195 (x|y|z[QW])*+(longish|loquatious|excessive|overblown[QW])*+ xyzQzWlongishoverblownW y $1-$2 zW-overblownW
1196 (x|y|z[QW]){1,5}+(longish|loquatious|excessive|overblown[QW]){1,5}+ xyzQzWlongishoverblownW y $1-$2 zW-overblownW
1199 a*(*FAIL) aaaab n - -
1202 (A(A|B(*ACCEPT)|C)D)(E) AB y $1 AB
1203 (A(A|B(*ACCEPT)|C)D)(E) ACDE y $1$2$3 ACDCE
1205 (a)(?:(?-1)|(?+1))(b) aab y $&-$1-$2 aab-a-b
1206 (a)(?:(?-1)|(?+1))(b) abb y $1-$2 a-b
1207 (a)(?:(?-1)|(?+1))(b) acb n - -
1209 (foo)(\g-2) foofoo y $1-$2 foo-foo
1210 (foo)(\g-2)(foo)(\g-2) foofoofoofoo y $1-$2-$3-$4 foo-foo-foo-foo
1211 (([abc]+) \g-1)(([abc]+) \g{-1}) abc abccba cba y $2-$4 abc-cba
1212 (a)(b)(c)\g1\g2\g3 abcabc y $1$2$3 abc
1214 # \k<n> preceded by a literal
1215 /(?'n'foo) \k<n>/ ..foo foo.. y $1 foo
1216 /(?'n'foo) \k<n>/ ..foo foo.. y $+{n} foo
1217 /(?<n>foo) \k'n'/ ..foo foo.. y $1 foo
1218 /(?<n>foo) \k'n'/ ..foo foo.. y $+{n} foo
1219 /(?'a1'foo) \k'a1'/ ..foo foo.. y $+{a1} foo
1220 /(?<a1>foo) \k<a1>/ ..foo foo.. y $+{a1} foo
1221 /(?'_'foo) \k'_'/ ..foo foo.. y $+{_} foo
1222 /(?<_>foo) \k<_>/ ..foo foo.. y $+{_} foo
1223 /(?'_0_'foo) \k'_0_'/ ..foo foo.. y $+{_0_} foo
1224 /(?<_0_>foo) \k<_0_>/ ..foo foo.. y $+{_0_} foo
1225 /(?'0'foo) bar/ ..foo bar.. c - Sequence (?'
1226 /(?<0>foo) bar/ ..foo bar.. c - Sequence (?<
1227 /(?'12'foo) bar/ ..foo bar.. c - Sequence (?'
1228 /(?<12>foo) bar/ ..foo bar.. c - Sequence (?<
1229 /(?'1a'foo) bar/ ..foo bar.. c - Sequence (?'
1230 /(?<1a>foo) bar/ ..foo bar.. c - Sequence (?<
1231 /(?''foo) bar/ ..foo bar.. c - Sequence (?''
1232 /(?<>foo) bar/ ..foo bar.. c - Sequence (?<>
1233 /foo \k'n'/ foo foo c - Reference to nonexistent named group
1234 /foo \k<n>/ foo foo c - Reference to nonexistent named group
1235 /foo \k'a1'/ foo foo c - Reference to nonexistent named group
1236 /foo \k<a1>/ foo foo c - Reference to nonexistent named group
1237 /foo \k'_'/ foo foo c - Reference to nonexistent named group
1238 /foo \k<_>/ foo foo c - Reference to nonexistent named group
1239 /foo \k'_0_'/ foo foo c - Reference to nonexistent named group
1240 /foo \k<_0_>/ foo foo c - Reference to nonexistent named group
1241 /foo \k'0'/ foo foo c - Sequence \\k'
1242 /foo \k<0>/ foo foo c - Sequence \\k<
1243 /foo \k'12'/ foo foo c - Sequence \\k'
1244 /foo \k<12>/ foo foo c - Sequence \\k<
1245 /foo \k'1a'/ foo foo c - Sequence \\k'
1246 /foo \k<1a>/ foo foo c - Sequence \\k<
1247 /foo \k''/ foo foo c - Sequence \\k'
1248 /foo \k<>/ foo foo c - Sequence \\k<
1249 /(?<as>as) (\w+) \k<as> (\w+)/ as easy as pie y $1-$2-$3 as-easy-pie
1251 # \g{...} with a name as the argument
1252 /(?'n'foo) \g{n}/ ..foo foo.. y $1 foo
1253 /(?'n'foo) \g{n}/ ..foo foo.. y $+{n} foo
1254 /(?<n>foo) \g{n}/ ..foo foo.. y $1 foo
1255 /(?<n>foo) \g{n}/ ..foo foo.. y $+{n} foo
1256 /(?<as>as) (\w+) \g{as} (\w+)/ as easy as pie y $1-$2-$3 as-easy-pie
1258 # Python style named capture buffer stuff
1259 /(?P<n>foo)(?P=n)/ ..foofoo.. y $1 foo
1260 /(?P<n>foo)(?P=n)/ ..foofoo.. y $+{n} foo
1261 /(?:(?P<n>foo)|(?P<n>bar))(?P=n)/ ..barbar.. y $+{n} bar
1262 /^(?P<PAL>(?P<CHAR>.)((?P>PAL)|.?)(?P=CHAR))$/ madamimadam y $& madamimadam
1263 /^(?P<PAL>(?P<CHAR>.)((?P>PAL)|.?)(?P=CHAR))$/ madamiamadam n - -
1264 /(?P<n>foo) (?P=n)/ ..foo foo.. y $1 foo
1265 /(?P<n>foo) (?P=n)/ ..foo foo.. y $+{n} foo
1266 /(?P<as>as) (\w+) (?P=as) (\w+)/ as easy as pie y $1-$2-$3 as-easy-pie
1268 #check that non identifiers as names are treated as the appropriate lookaround
1269 (?<=bar>)foo bar>foo y $& foo
1270 (?<!bar>)foo bar>foo n - -
1271 (?<=bar>ABC)foo bar>ABCfoo y $& foo
1272 (?<!bar>ABC)foo bar>ABCfoo n - -
1273 (?<bar>)foo bar>ABCfoo y $& foo
1274 (?<bar>ABC)foo bar>ABCfoo y $& ABCfoo
1276 (?<=abcd(?<=(aaaabcd))) ..aaaabcd.. y $1 aaaabcd
1277 (?=xy(?<=(aaxy))) ..aaxy.. y $1 aaxy
1279 X(\w+)(?=\s)|X(\w+) Xab y [$1-$2] [-ab]
1281 #check that branch reset works ok.
1282 (?|a(.)b|d(.(o).)d|i(.)(.)j)(.) d!o!da y $1-$2-$3 !o!-o-a
1283 (?|a(.)b|d(.(o).)d|i(.)(.)j)(.) aabc y $1-$2-$3 a--c
1284 (?|a(.)b|d(.(o).)d|i(.)(.)j)(.) ixyjp y $1-$2-$3 x-y-p
1285 (?|(?|(a)|(b))|(?|(c)|(d))) a y $1 a
1286 (?|(?|(a)|(b))|(?|(c)|(d))) b y $1 b
1287 (?|(?|(a)|(b))|(?|(c)|(d))) c y $1 c
1288 (?|(?|(a)|(b))|(?|(c)|(d))) d y $1 d
1289 (.)(?|(.)(.)x|(.)d)(.) abcde y $1-$2-$3-$4-$5- b-c--e--
1291 (?(DEFINE)(?<A>(?&B)+)(?<B>a))(?&A) a y $& a
1292 (?(DEFINE)(?<A>(?&B)+)(?<B>a))(?&A) aa y $& aa
1293 \x{100}?(??{""})xxx xxx y $& xxx
1295 foo(\R)bar foo\r\nbar y $1 \r\n
1296 foo(\R)bar foo\nbar y $1 \n
1297 foo(\R)bar foo\rbar y $1 \r
1299 foo(\R+)bar foo\r\n\x{85}\r\n\nbar y $1 \r\n\x{85}\r\n\n
1300 (\V+)(\R) foo\r\n\x{85}\r\n\nbar y $1-$2 foo-\r\n
1301 (\R+)(\V) foo\r\n\x{85}\r\n\nbar y $1-$2 \r\n\x{85}\r\n\n-b
1302 foo(\R)bar foo\x{85}bar y $1 \x{85}
1303 (\V)(\R) foo\x{85}bar y $1-$2 o-\x{85}
1304 (\R)(\V) foo\x{85}bar y $1-$2 \x{85}-b
1305 foo(\R)bar foo\r\nbar y $1 \r\n
1306 (\V)(\R) foo\r\nbar y $1-$2 o-\r\n
1307 (\R)(\V) foo\r\nbar y $1-$2 \r\n-b
1308 foo(\R)bar foo\r\nbar y $1 \r\n
1309 (\V)(\R) foo\r\nbar y $1-$2 o-\r\n
1310 (\R)(\V) foo\r\nbar y $1-$2 \r\n-b
1311 foo(\R)bar foo\rbar y $1 \r
1312 (\V)(\R) foo\rbar y $1-$2 o-\r
1313 (\R)(\V) foo\rbar y $1-$2 \r-b
1315 foo(\v+)bar foo\r\n\x{85}\r\n\nbar y $1 \r\n\x{85}\r\n\n
1316 (\V+)(\v) foo\r\n\x{85}\r\n\nbar y $1-$2 foo-\r
1317 (\v+)(\V) foo\r\n\x{85}\r\n\nbar y $1-$2 \r\n\x{85}\r\n\n-b
1318 foo(\v)bar foo\x{85}bar y $1 \x{85}
1319 (\V)(\v) foo\x{85}bar y $1-$2 o-\x{85}
1320 (\v)(\V) foo\x{85}bar y $1-$2 \x{85}-b
1321 foo(\v)bar foo\rbar y $1 \r
1322 (\V)(\v) foo\rbar y $1-$2 o-\r
1323 (\v)(\V) foo\rbar y $1-$2 \r-b
1326 foo(\h+)bar foo\t\x{A0}bar y $1 \t\x{A0}
1327 (\H+)(\h) foo\t\x{A0}bar y $1-$2 foo-\t
1328 (\h+)(\H) foo\t\x{A0}bar y $1-$2 \t\x{A0}-b
1329 foo(\h)bar foo\x{A0}bar y $1 \x{A0}
1330 (\H)(\h) foo\x{A0}bar y $1-$2 o-\x{A0}
1331 (\h)(\H) foo\x{A0}bar y $1-$2 \x{A0}-b
1332 foo(\h)bar foo\tbar y $1 \t
1333 (\H)(\h) foo\tbar y $1-$2 o-\t
1334 (\h)(\H) foo\tbar y $1-$2 \t-b
1337 ^(?:(\d)x)?\d$ 1 y ${\(defined($1)?1:0)} 0
1338 .*?(?:(\w)|(\w))x abx y $1-$2 b-