File: tests

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# regular expression test set
# Lines are at least three fields, separated by one or more tabs.  "" stands
# for an empty field.  First field is an RE.  Second field is flags.  If
# C flag given, regcomp() is expected to fail, and the third field is the
# error name (minus the leading REG_).
#
# Otherwise it is expected to succeed, and the third field is the string to
# try matching it against.  If there is no fourth field, the match is
# expected to fail.  If there is a fourth field, it is the substring that
# the RE is expected to match.  If there is a fifth field, it is a comma-
# separated list of what the subexpressions should match, with - indicating
# no match for that one.  In both the fourth and fifth fields, a (sub)field
# starting with @ indicates that the (sub)expression is expected to match
# a null string followed by the stuff after the @; this provides a way to
# test where null strings match.  The character `N' in REs and strings
# is newline, `S' is space, `T' is tab, `Z' is NUL.
#
# The full list of flags:
#	-	placeholder, does nothing
#	b	RE is a BRE, not an ERE
#	&	try it as both an ERE and a BRE
#	C	regcomp() error expected, third field is error name
#	i	REG_ICASE
#	m	("mundane") REG_NOSPEC
#	s	REG_NOSUB (not really testable)
#	n	REG_NEWLINE
#	^	REG_NOTBOL
#	$	REG_NOTEOL
#	#	REG_STARTEND (see below)
#	p	REG_PEND
#
# For REG_STARTEND, the start/end offsets are those of the substring
# enclosed in ().

# basics
a		&	a	a
abc		&	abc	abc
abc|de		-	abc	abc
a|b|c		-	abc	a

# parentheses and perversions thereof
a(b)c		-	abc	abc
a\(b\)c		b	abc	abc
a(		C	EPAREN
a(		b	a(	a(
a\(		-	a(	a(
a\(		bC	EPAREN
a\(b		bC	EPAREN
a(b		C	EPAREN
a(b		b	a(b	a(b
# gag me with a right parenthesis -- 1003.2 goofed here (my fault, partly)
a)		-	a)	a)
)		-	)	)
# end gagging (in a just world, those *should* give EPAREN)
a)		b	a)	a)
a\)		bC	EPAREN
\)		bC	EPAREN
a()b		-	ab	ab
a\(\)b		b	ab	ab

# anchoring and REG_NEWLINE
^abc$		&	abc	abc
a^b		-	a^b
a^b		b	a^b	a^b
a$b		-	a$b
a$b		b	a$b	a$b
^		&	abc	@abc
$		&	abc	@
^$		&	""	@
$^		-	""	@
\($\)\(^\)	b	""	@
# stop retching, those are legitimate (although disgusting)
^^		-	""	@
$$		-	""	@
b$		&	abNc
b$		&n	abNc	b
^b$		&	aNbNc
^b$		&n	aNbNc	b
^$		&n	aNNb	@Nb
^$		n	abc
^$		n	abcN	@
$^		n	aNNb	@Nb
\($\)\(^\)	bn	aNNb	@Nb
^^		n^	aNNb	@Nb
$$		n	aNNb	@NN
^a		^	a
a$		$	a
^a		^n	aNb
^b		^n	aNb	b
a$		$n	bNa
b$		$n	bNa	b
a*(^b$)c*	-	b	b
a*\(^b$\)c*	b	b	b

# certain syntax errors and non-errors
|		C	EMPTY
|		b	|	|
*		C	BADRPT
*		b	*	*
+		C	BADRPT
?		C	BADRPT
""		&C	EMPTY
()		-	abc	@abc
\(\)		b	abc	@abc
a||b		C	EMPTY
|ab		C	EMPTY
ab|		C	EMPTY
(|a)b		C	EMPTY
(a|)b		C	EMPTY
(*a)		C	BADRPT
(+a)		C	BADRPT
(?a)		C	BADRPT
({1}a)		C	BADRPT
\(\{1\}a\)	bC	BADRPT
(a|*b)		C	BADRPT
(a|+b)		C	BADRPT
(a|?b)		C	BADRPT
(a|{1}b)	C	BADRPT
^*		C	BADRPT
^*		b	*	*
^+		C	BADRPT
^?		C	BADRPT
^{1}		C	BADRPT
^\{1\}		bC	BADRPT

# metacharacters, backslashes
a.c		&	abc	abc
a[bc]d		&	abd	abd
a\*c		&	a*c	a*c
a\\b		&	a\b	a\b
a\\\*b		&	a\*b	a\*b
# The following test is wrong.  Using \b in an BRE or ERE is undefined.
# a\bc		&	abc	abc
a\		&C	EESCAPE
a\\bc		&	a\bc	a\bc
\{		bC	BADRPT
a\[b		&	a[b	a[b
a[b		&C	EBRACK
# trailing $ is a peculiar special case for the BRE code
a$		&	a	a
a$		&	a$
a\$		&	a
a\$		&	a$	a$
a\\$		&	a
a\\$		&	a$
a\\$		&	a\$
a\\$		&	a\	a\

# back references, ugh
a\(b\)\2c	bC	ESUBREG
a\(b\1\)c	bC	ESUBREG
a\(b*\)c\1d	b	abbcbbd	abbcbbd	bb
a\(b*\)c\1d	b	abbcbd
a\(b*\)c\1d	b	abbcbbbd
^\(.\)\1	b	abc
a\([bc]\)\1d	b	abcdabbd	abbd	b
a\(\([bc]\)\2\)*d	b	abbccd	abbccd
a\(\([bc]\)\2\)*d	b	abbcbd
# actually, this next one probably ought to fail, but the spec is unclear
a\(\(b\)*\2\)*d		b	abbbd	abbbd
# here is a case that no NFA implementation does right
\(ab*\)[ab]*\1	b	ababaaa	ababaaa	a
# check out normal matching in the presence of back refs
\(a\)\1bcd	b	aabcd	aabcd
\(a\)\1bc*d	b	aabcd	aabcd
\(a\)\1bc*d	b	aabd	aabd
\(a\)\1bc*d	b	aabcccd	aabcccd
\(a\)\1bc*[ce]d	b	aabcccd	aabcccd
^\(a\)\1b\(c\)*cd$	b	aabcccd	aabcccd

# ordinary repetitions
ab*c		&	abc	abc
ab+c		-	abc	abc
ab?c		-	abc	abc
a\(*\)b		b	a*b	a*b
a\(**\)b	b	ab	ab
a\(***\)b	bC	BADRPT
*a		b	*a	*a
**a		b	a	a
***a		bC	BADRPT

# the dreaded bounded repetitions
# The following two tests are not correct:
#{		&	{	{
#{abc		&	{abc	{abc
# '{' is always a special char outside bracket expressions.  So test ony BRE:
{		b	{	{
{abc		b	{abc	{abc
{1		C	BADRPT
{1}		C	BADRPT
# Same reason as for the two tests above:
#a{b		&	a{b	a{b
a{b		b	a{b	a{b
a{1}b		-	ab	ab
a\{1\}b		b	ab	ab
a{1,}b		-	ab	ab
a\{1,\}b	b	ab	ab
a{1,2}b		-	aab	aab
a\{1,2\}b	b	aab	aab
a{1		C	EBRACE
a\{1		bC	EBRACE
a{1a		C	EBRACE
a\{1a		bC	EBRACE
a{1a}		C	BADBR
a\{1a\}		bC	BADBR
# These four tests checks for undefined behavior.  Our implementation does
# something different.
#a{,2}		-	a{,2}	a{,2}
#a\{,2\}		bC	BADBR
#a{,}		-	a{,}	a{,}
#a\{,\}		bC	BADBR
a{1,x}		C	BADBR
a\{1,x\}	bC	BADBR
a{1,x		C	EBRACE
a\{1,x		bC	EBRACE
# These two tests probably fails due to an arbitrary limit on the number of
# repetitions in the other implementation.
#a{300}		C	BADBR
#a\{300\}	bC	BADBR
a{1,0}		C	BADBR
a\{1,0\}	bC	BADBR
ab{0,0}c	-	abcac	ac
ab\{0,0\}c	b	abcac	ac
ab{0,1}c	-	abcac	abc
ab\{0,1\}c	b	abcac	abc
ab{0,3}c	-	abbcac	abbc
ab\{0,3\}c	b	abbcac	abbc
ab{1,1}c	-	acabc	abc
ab\{1,1\}c	b	acabc	abc
ab{1,3}c	-	acabc	abc
ab\{1,3\}c	b	acabc	abc
ab{2,2}c	-	abcabbc	abbc
ab\{2,2\}c	b	abcabbc	abbc
ab{2,4}c	-	abcabbc	abbc
ab\{2,4\}c	b	abcabbc	abbc
((a{1,10}){1,10}){1,10}	-	a	a	a,a

# multiple repetitions
# Wow, there is serious disconnect here.  The ERE grammar is like this:
# ERE_expression : one_char_or_coll_elem_ERE
#                | '^'
#                | '$'
#                | '(' extended_reg_exp ')'
#                | ERE_expression ERE_dupl_symbol
#                ;
# where ERE_dupl_symbol is any of the repetition methods.  It is clear from
# this that consecutive repetition is OK.  On top of this, the one test not
# marked as failing must fail.  For BREs the situation is different, so we
# use the four tests.
#a**		&C	BADRPT
a**		bC	BADRPT
#a++		C	BADRPT
#a??		C	BADRPT
#a*+		C	BADRPT
#a*?		C	BADRPT
#a+*		C	BADRPT
#a+?		C	BADRPT
#a?*		C	BADRPT
#a?+		C	BADRPT
#a{1}{1}		C	BADRPT
#a*{1}		C	BADRPT
#a+{1}		C	BADRPT
#a?{1}		C	BADRPT
#a{1}*		C	BADRPT
#a{1}+		C	BADRPT
#a{1}?		C	BADRPT
#a*{b}		-	a{b}	a{b}
a\{1\}\{1\}	bC	BADRPT
a*\{1\}		bC	BADRPT
a\{1\}*		bC	BADRPT

# brackets, and numerous perversions thereof
a[b]c		&	abc	abc
a[ab]c		&	abc	abc
a[^ab]c		&	adc	adc
a[]b]c		&	a]c	a]c
a[[b]c		&	a[c	a[c
a[-b]c		&	a-c	a-c
a[^]b]c		&	adc	adc
a[^-b]c		&	adc	adc
a[b-]c		&	a-c	a-c
a[b		&C	EBRACK
a[]		&C	EBRACK
a[1-3]c		&	a2c	a2c
a[3-1]c		&C	ERANGE
a[1-3-5]c	&C	ERANGE
a[[.-.]--]c	&	a-c	a-c
# I don't thing the error value should be ERANGE since a[1-] would be
# valid, too.  Expect EBRACK.
#a[1-		&C	ERANGE
a[1-		&C	EBRACK
a[[.		&C	EBRACK
a[[.x		&C	EBRACK
a[[.x.		&C	EBRACK
a[[.x.]		&C	EBRACK
a[[.x.]]	&	ax	ax
a[[.x,.]]	&C	ECOLLATE
# This test is invalid.  "one" is no collating symbol in any standardized
# locale.
# a[[.one.]]b	&	a1b	a1b
a[[.notdef.]]b	&C	ECOLLATE
a[[.].]]b	&	a]b	a]b
a[[:alpha:]]c	&	abc	abc
a[[:notdef:]]c	&C	ECTYPE
a[[:		&C	EBRACK
a[[:alpha	&C	EBRACK
a[[:alpha:]	&C	EBRACK
a[[:alpha,:]	&C	ECTYPE
a[[:]:]]b	&C	ECTYPE
a[[:-:]]b	&C	ECTYPE
a[[:alph:]]	&C	ECTYPE
a[[:alphabet:]]	&C	ECTYPE
[[:alnum:]]+	-	-%@a0X-	a0X
[[:alpha:]]+	-	-%@aX0-	aX
[[:blank:]]+	-	aSSTb	SST
[[:cntrl:]]+	-	aNTb	NT
[[:digit:]]+	-	a019b	019
[[:graph:]]+	-	Sa%bS	a%b
[[:lower:]]+	-	AabC	ab
[[:print:]]+	-	NaSbN	aSb
[[:punct:]]+	-	S%-&T	%-&
[[:space:]]+	-	aSNTb	SNT
[[:upper:]]+	-	aBCd	BC
[[:xdigit:]]+	-	p0f3Cq	0f3C
a[[=b=]]c	&	abc	abc
a[[=		&C	EBRACK
a[[=b		&C	EBRACK
a[[=b=		&C	EBRACK
a[[=b=]		&C	EBRACK
a[[=b,=]]	&C	ECOLLATE
# This test is invalid.  "one" is no collating symbol in any standardized
# locale.
#a[[=one=]]b	&	a1b	a1b

# complexities
a(((b)))c	-	abc	abc
a(b|(c))d	-	abd	abd
a(b*|c)d	-	abbd	abbd
# just gotta have one DFA-buster, of course
a[ab]{20}	-	aaaaabaaaabaaaabaaaab	aaaaabaaaabaaaabaaaab
# and an inline expansion in case somebody gets tricky
a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab]	-	aaaaabaaaabaaaabaaaab	aaaaabaaaabaaaabaaaab
# and in case somebody just slips in an NFA...
a[ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab][ab](wee|week)(knights|night)	-	aaaaabaaaabaaaabaaaabweeknights	aaaaabaaaabaaaabaaaabweeknights
# fish for anomalies as the number of states passes 32
12345678901234567890123456789	-	a12345678901234567890123456789b	12345678901234567890123456789
123456789012345678901234567890	-	a123456789012345678901234567890b	123456789012345678901234567890
1234567890123456789012345678901	-	a1234567890123456789012345678901b	1234567890123456789012345678901
12345678901234567890123456789012	-	a12345678901234567890123456789012b	12345678901234567890123456789012
123456789012345678901234567890123	-	a123456789012345678901234567890123b	123456789012345678901234567890123
# and one really big one, beyond any plausible word width
1234567890123456789012345678901234567890123456789012345678901234567890	-	a1234567890123456789012345678901234567890123456789012345678901234567890b	1234567890123456789012345678901234567890123456789012345678901234567890
# fish for problems as brackets go past 8
[ab][cd][ef][gh][ij][kl][mn]	-	xacegikmoq	acegikm
[ab][cd][ef][gh][ij][kl][mn][op]	-	xacegikmoq	acegikmo
[ab][cd][ef][gh][ij][kl][mn][op][qr]	-	xacegikmoqy	acegikmoq
[ab][cd][ef][gh][ij][kl][mn][op][q]	-	xacegikmoqy	acegikmoq

# subtleties of matching
abc		&	xabcy	abc
a\(b\)?c\1d	b	acd
aBc		i	Abc	Abc
a[Bc]*d		i	abBCcd	abBCcd
0[[:upper:]]1	&i	0a1	0a1
0[[:lower:]]1	&i	0A1	0A1
a[^b]c		&i	abc
a[^b]c		&i	aBc
a[^b]c		&i	adc	adc
[a]b[c]		-	abc	abc
[a]b[a]		-	aba	aba
[abc]b[abc]	-	abc	abc
[abc]b[abd]	-	abd	abd
a(b?c)+d	-	accd	accd
(wee|week)(knights|night)	-	weeknights	weeknights
(we|wee|week|frob)(knights|night|day)	-	weeknights	weeknights
a[bc]d		-	xyzaaabcaababdacd	abd
a[ab]c		-	aaabc	abc
abc		s	abc	abc
()		s	abc	@abc
a*		&	b	@b

# Let's have some fun -- try to match a C comment.
# first the obvious, which looks okay at first glance...
/\*.*\*/	-	/*x*/	/*x*/
# but...
/\*.*\*/	-	/*x*/y/*z*/	/*x*/y/*z*/
# okay, we must not match */ inside; try to do that...
/\*([^*]|\*[^/])*\*/	-	/*x*/	/*x*/
/\*([^*]|\*[^/])*\*/	-	/*x*/y/*z*/	/*x*/
# but...
/\*([^*]|\*[^/])*\*/	-	/*x**/y/*z*/	/*x**/y/*z*/
# and a still fancier version, which does it right (I think)...
/\*([^*]|\*+[^*/])*\*+/	-	/*x*/	/*x*/
/\*([^*]|\*+[^*/])*\*+/	-	/*x*/y/*z*/	/*x*/
/\*([^*]|\*+[^*/])*\*+/	-	/*x**/y/*z*/	/*x**/
/\*([^*]|\*+[^*/])*\*+/	-	/*x****/y/*z*/	/*x****/
/\*([^*]|\*+[^*/])*\*+/	-	/*x**x*/y/*z*/	/*x**x*/
/\*([^*]|\*+[^*/])*\*+/	-	/*x***x/y/*z*/	/*x***x/y/*z*/

# subexpressions
.*		-	abc	abc	-
a(b)(c)d	-	abcd	abcd	b,c
a(((b)))c	-	abc	abc	b,b,b
a(b|(c))d	-	abd	abd	b,-
a(b*|c|e)d	-	abbd	abbd	bb
a(b*|c|e)d	-	acd	acd	c
a(b*|c|e)d	-	ad	ad	@d
a(b?)c		-	abc	abc	b
a(b?)c		-	ac	ac	@c
a(b+)c		-	abc	abc	b
a(b+)c		-	abbbc	abbbc	bbb
a(b*)c		-	ac	ac	@c
(a|ab)(bc([de]+)f|cde)	-	abcdef	abcdef	a,bcdef,de
# the regression tester only asks for 9 subexpressions
a(b)(c)(d)(e)(f)(g)(h)(i)(j)k	-	abcdefghijk	abcdefghijk	b,c,d,e,f,g,h,i,j
a(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)l	-	abcdefghijkl	abcdefghijkl	b,c,d,e,f,g,h,i,j,k
a([bc]?)c	-	abc	abc	b
a([bc]?)c	-	ac	ac	@c
a([bc]+)c	-	abc	abc	b
a([bc]+)c	-	abcc	abcc	bc
a([bc]+)bc	-	abcbc	abcbc	bc
a(bb+|b)b	-	abb	abb	b
a(bbb+|bb+|b)b	-	abb	abb	b
a(bbb+|bb+|b)b	-	abbb	abbb	bb
a(bbb+|bb+|b)bb	-	abbb	abbb	b
(.*).*		-	abcdef	abcdef	abcdef
(a*)*		-	bc	@b	@b

# do we get the right subexpression when it is used more than once?
a(b|c)*d	-	ad	ad	-
a(b|c)*d	-	abcd	abcd	c
a(b|c)+d	-	abd	abd	b
a(b|c)+d	-	abcd	abcd	c
a(b|c?)+d	-	ad	ad	@d
a(b|c?)+d	-	abcd	abcd	c
a(b|c){0,0}d	-	ad	ad	-
a(b|c){0,1}d	-	ad	ad	-
a(b|c){0,1}d	-	abd	abd	b
a(b|c){0,2}d	-	ad	ad	-
a(b|c){0,2}d	-	abcd	abcd	c
a(b|c){0,}d	-	ad	ad	-
a(b|c){0,}d	-	abcd	abcd	c
a(b|c){1,1}d	-	abd	abd	b
a(b|c){1,1}d	-	acd	acd	c
a(b|c){1,2}d	-	abd	abd	b
a(b|c){1,2}d	-	abcd	abcd	c
a(b|c){1,}d	-	abd	abd	b
a(b|c){1,}d	-	abcd	abcd	c
a(b|c){2,2}d	-	acbd	acbd	b
a(b|c){2,2}d	-	abcd	abcd	c
a(b|c){2,4}d	-	abcd	abcd	c
a(b|c){2,4}d	-	abcbd	abcbd	b
a(b|c){2,4}d	-	abcbcd	abcbcd	c
a(b|c){2,}d	-	abcd	abcd	c
a(b|c){2,}d	-	abcbd	abcbd	b
a(b+|((c)*))+d	-	abd	abd	b,-,-
a(b+|((c)*))+d	-	abcd	abcd	c,c,c

# check out the STARTEND option
[abc]		&#	a(b)c	b
[abc]		&#	a(d)c
[abc]		&#	a(bc)d	b
[abc]		&#	a(dc)d	c
.		&#	a()c
b.*c		&#	b(bc)c	bc
b.*		&#	b(bc)c	bc
.*c		&#	b(bc)c	bc

# plain strings, with the NOSPEC flag
abc		m	abc	abc
abc		m	xabcy	abc
abc		m	xyz
a*b		m	aba*b	a*b
a*b		m	ab
""		mC	EMPTY

# cases involving NULs
aZb		&	a	a
aZb		&p	a
aZb		&p#	(aZb)	aZb
aZ*b		&p#	(ab)	ab
a.b		&#	(aZb)	aZb
a.*		&#	(aZb)c	aZb

# word boundaries (ick)
[[:<:]]a	&	a	a
[[:<:]]a	&	ba
[[:<:]]a	&	-a	a
a[[:>:]]	&	a	a
a[[:>:]]	&	ab
a[[:>:]]	&	a-	a
[[:<:]]a.c[[:>:]]	&	axcd-dayc-dazce-abc	abc
[[:<:]]a.c[[:>:]]	&	axcd-dayc-dazce-abc-q	abc
[[:<:]]a.c[[:>:]]	&	axc-dayc-dazce-abc	axc
[[:<:]]b.c[[:>:]]	&	a_bxc-byc_d-bzc-q	bzc
[[:<:]].x..[[:>:]]	&	y_xa_-_xb_y-_xc_-axdc	_xc_
[[:<:]]a_b[[:>:]]	&	x_a_b

# past problems, and suspected problems
(A[1])|(A[2])|(A[3])|(A[4])|(A[5])|(A[6])|(A[7])|(A[8])|(A[9])|(A[A])	-	A1	A1
abcdefghijklmnop	i	abcdefghijklmnop	abcdefghijklmnop
abcdefghijklmnopqrstuv	i	abcdefghijklmnopqrstuv	abcdefghijklmnopqrstuv
(ALAK)|(ALT[AB])|(CC[123]1)|(CM[123]1)|(GAMC)|(LC[23][EO ])|(SEM[1234])|(SL[ES][12])|(SLWW)|(SLF )|(SLDT)|(VWH[12])|(WH[34][EW])|(WP1[ESN])	-	CC11	CC11
CC[13]1|a{21}[23][EO][123][Es][12]a{15}aa[34][EW]aaaaaaa[X]a	-	CC11	CC11
Char \([a-z0-9_]*\)\[.*	b	Char xyz[k	Char xyz[k	xyz
a?b	-	ab	ab
-\{0,1\}[0-9]*$	b	-5	-5
a*a*a*a*a*a*a*	&	aaaaaa	aaaaaa
(\b){0}	-	x	@x	-
\(\b\)\{0,0\}	b	abc	@abc	-
a(\b){0}c	-	ac	ac	-
a(.*)b(\1){0}c	-	abc	abc	@bc,-
a(.*)b(\1){0}c	-	axbc	axbc	x,-

a\(\(b*\)\)c\1d	b	abbcbbd	abbcbbd	bb,bb
a\(\([bc]\)\)\2d	b	abcdabbd	abbd	b,b
a\(\(\(\([bc]\)\)\3\)\)*d	b	abbccd	abbccd	cc,cc,c,c
a(b)(c)d	-	abcd	abcd	b,c
a(((b)))c	-	abc	abc	b,b,b
a(((b|(((c))))))d	-	abd	abd	b,b,b,-,-,-
a(((b*|c|e)))d	-	abbd	abbd	bb,bb,bb
a((b|c)){0,0}d	-	ad	ad	-,-
a((b|c)){0,1}d	-	abd	abd	b,b
a((b|c)){0,2}d	-	abcd	abcd	c,c
a((b+|((c)*)))+d	-	abd	abd	b,b,-,-
a((b+|((c)*)))+d	-	abcd	abcd	c,c,c,c
(((\b))){0}	-	x	@x	-,-,-
a(((.*)))b((\2)){0}c	-	abc	abc	@bc,@bc,@bc,-,-
a(((.*)))b((\1)){0}c	-	axbc	axbc	x,x,x,-,-

\b	&	SaT	@aT
\b	&	aT	@aT
a.*\b	&	abT	ab
\b	&	STSS
\B	&	abc	@bc
\B	&	aSbTc
\B	&	SaT	@SaT
\B	&	aSTSb	@TSb

o$($|.)	-	oN
o$($|.)	-	op
o$($|.)	-	o	o