|  | NOTE	implicit vs. explicit repetitions : 2009-02-02 | 
|  |  | 
|  | # Glenn Fowler <gsf@research.att.com> | 
|  | # conforming matches (column 4) must match one of the following BREs | 
|  | #	NOMATCH | 
|  | #	(0,.)\((\(.\),\(.\))(?,?)(\2,\3)\)* | 
|  | #	(0,.)\((\(.\),\(.\))(\2,\3)(?,?)\)* | 
|  | # i.e., each 3-tuple has two identical elements and one (?,?) | 
|  |  | 
|  | E	((..)|(.))				NULL		NOMATCH | 
|  | E	((..)|(.))((..)|(.))			NULL		NOMATCH | 
|  | E	((..)|(.))((..)|(.))((..)|(.))		NULL		NOMATCH | 
|  |  | 
|  | E	((..)|(.)){1}				NULL		NOMATCH | 
|  | E	((..)|(.)){2}				NULL		NOMATCH | 
|  | E	((..)|(.)){3}				NULL		NOMATCH | 
|  |  | 
|  | E	((..)|(.))*				NULL		(0,0) | 
|  |  | 
|  | E	((..)|(.))				a		(0,1)(0,1)(?,?)(0,1) | 
|  | E	((..)|(.))((..)|(.))			a		NOMATCH | 
|  | E	((..)|(.))((..)|(.))((..)|(.))		a		NOMATCH | 
|  |  | 
|  | E	((..)|(.)){1}				a		(0,1)(0,1)(?,?)(0,1) | 
|  | E	((..)|(.)){2}				a		NOMATCH | 
|  | E	((..)|(.)){3}				a		NOMATCH | 
|  |  | 
|  | E	((..)|(.))*				a		(0,1)(0,1)(?,?)(0,1) | 
|  |  | 
|  | E	((..)|(.))				aa		(0,2)(0,2)(0,2)(?,?) | 
|  | E	((..)|(.))((..)|(.))			aa		(0,2)(0,1)(?,?)(0,1)(1,2)(?,?)(1,2) | 
|  | E	((..)|(.))((..)|(.))((..)|(.))		aa		NOMATCH | 
|  |  | 
|  | E	((..)|(.)){1}				aa		(0,2)(0,2)(0,2)(?,?) | 
|  | E	((..)|(.)){2}				aa		(0,2)(1,2)(?,?)(1,2) | 
|  | E	((..)|(.)){3}				aa		NOMATCH | 
|  |  | 
|  | E	((..)|(.))*				aa		(0,2)(0,2)(0,2)(?,?) | 
|  |  | 
|  | E	((..)|(.))				aaa		(0,2)(0,2)(0,2)(?,?) | 
|  | E	((..)|(.))((..)|(.))			aaa		(0,3)(0,2)(0,2)(?,?)(2,3)(?,?)(2,3) | 
|  | E	((..)|(.))((..)|(.))((..)|(.))		aaa		(0,3)(0,1)(?,?)(0,1)(1,2)(?,?)(1,2)(2,3)(?,?)(2,3) | 
|  |  | 
|  | E	((..)|(.)){1}				aaa		(0,2)(0,2)(0,2)(?,?) | 
|  | #E	((..)|(.)){2}				aaa		(0,3)(2,3)(?,?)(2,3) | 
|  | E	((..)|(.)){2}				aaa		(0,3)(2,3)(0,2)(2,3)	RE2/Go | 
|  | E	((..)|(.)){3}				aaa		(0,3)(2,3)(?,?)(2,3) | 
|  |  | 
|  | #E	((..)|(.))*				aaa		(0,3)(2,3)(?,?)(2,3) | 
|  | E	((..)|(.))*				aaa		(0,3)(2,3)(0,2)(2,3)	RE2/Go | 
|  |  | 
|  | E	((..)|(.))				aaaa		(0,2)(0,2)(0,2)(?,?) | 
|  | E	((..)|(.))((..)|(.))			aaaa		(0,4)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?) | 
|  | E	((..)|(.))((..)|(.))((..)|(.))		aaaa		(0,4)(0,2)(0,2)(?,?)(2,3)(?,?)(2,3)(3,4)(?,?)(3,4) | 
|  |  | 
|  | E	((..)|(.)){1}				aaaa		(0,2)(0,2)(0,2)(?,?) | 
|  | E	((..)|(.)){2}				aaaa		(0,4)(2,4)(2,4)(?,?) | 
|  | #E	((..)|(.)){3}				aaaa		(0,4)(3,4)(?,?)(3,4) | 
|  | E	((..)|(.)){3}				aaaa		(0,4)(3,4)(0,2)(3,4)	RE2/Go | 
|  |  | 
|  | E	((..)|(.))*				aaaa		(0,4)(2,4)(2,4)(?,?) | 
|  |  | 
|  | E	((..)|(.))				aaaaa		(0,2)(0,2)(0,2)(?,?) | 
|  | E	((..)|(.))((..)|(.))			aaaaa		(0,4)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?) | 
|  | E	((..)|(.))((..)|(.))((..)|(.))		aaaaa		(0,5)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)(4,5)(?,?)(4,5) | 
|  |  | 
|  | E	((..)|(.)){1}				aaaaa		(0,2)(0,2)(0,2)(?,?) | 
|  | E	((..)|(.)){2}				aaaaa		(0,4)(2,4)(2,4)(?,?) | 
|  | #E	((..)|(.)){3}				aaaaa		(0,5)(4,5)(?,?)(4,5) | 
|  | E	((..)|(.)){3}				aaaaa		(0,5)(4,5)(2,4)(4,5)	RE2/Go | 
|  |  | 
|  | #E	((..)|(.))*				aaaaa		(0,5)(4,5)(?,?)(4,5) | 
|  | E	((..)|(.))*				aaaaa		(0,5)(4,5)(2,4)(4,5)	RE2/Go | 
|  |  | 
|  | E	((..)|(.))				aaaaaa		(0,2)(0,2)(0,2)(?,?) | 
|  | E	((..)|(.))((..)|(.))			aaaaaa		(0,4)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?) | 
|  | E	((..)|(.))((..)|(.))((..)|(.))		aaaaaa		(0,6)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)(4,6)(4,6)(?,?) | 
|  |  | 
|  | E	((..)|(.)){1}				aaaaaa		(0,2)(0,2)(0,2)(?,?) | 
|  | E	((..)|(.)){2}				aaaaaa		(0,4)(2,4)(2,4)(?,?) | 
|  | E	((..)|(.)){3}				aaaaaa		(0,6)(4,6)(4,6)(?,?) | 
|  |  | 
|  | E	((..)|(.))*				aaaaaa		(0,6)(4,6)(4,6)(?,?) | 
|  |  | 
|  | NOTE	additional repetition tests graciously provided by Chris Kuklewicz www.haskell.org 2009-02-02 | 
|  |  | 
|  | # These test a bug in OS X / FreeBSD / NetBSD, and libtree. | 
|  | # Linux/GLIBC gets the {8,} and {8,8} wrong. | 
|  |  | 
|  | :HA#100:E	X(.?){0,}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#101:E	X(.?){1,}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#102:E	X(.?){2,}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#103:E	X(.?){3,}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#104:E	X(.?){4,}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#105:E	X(.?){5,}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#106:E	X(.?){6,}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#107:E	X(.?){7,}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#108:E	X(.?){8,}Y	X1234567Y	(0,9)(8,8) | 
|  | #:HA#110:E	X(.?){0,8}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#110:E	X(.?){0,8}Y	X1234567Y	(0,9)(8,8)	RE2/Go | 
|  | #:HA#111:E	X(.?){1,8}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#111:E	X(.?){1,8}Y	X1234567Y	(0,9)(8,8)	RE2/Go | 
|  | #:HA#112:E	X(.?){2,8}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#112:E	X(.?){2,8}Y	X1234567Y	(0,9)(8,8)	RE2/Go | 
|  | #:HA#113:E	X(.?){3,8}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#113:E	X(.?){3,8}Y	X1234567Y	(0,9)(8,8)	RE2/Go | 
|  | #:HA#114:E	X(.?){4,8}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#114:E	X(.?){4,8}Y	X1234567Y	(0,9)(8,8)	RE2/Go | 
|  | #:HA#115:E	X(.?){5,8}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#115:E	X(.?){5,8}Y	X1234567Y	(0,9)(8,8)	RE2/Go | 
|  | #:HA#116:E	X(.?){6,8}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#116:E	X(.?){6,8}Y	X1234567Y	(0,9)(8,8)	RE2/Go | 
|  | #:HA#117:E	X(.?){7,8}Y	X1234567Y	(0,9)(7,8) | 
|  | :HA#117:E	X(.?){7,8}Y	X1234567Y	(0,9)(8,8)	RE2/Go | 
|  | :HA#118:E	X(.?){8,8}Y	X1234567Y	(0,9)(8,8) | 
|  |  | 
|  | # These test a fixed bug in my regex-tdfa that did not keep the expanded | 
|  | # form properly grouped, so right association did the wrong thing with | 
|  | # these ambiguous patterns (crafted just to test my code when I became | 
|  | # suspicious of my implementation).  The first subexpression should use | 
|  | # "ab" then "a" then "bcd". | 
|  |  | 
|  | # OS X / FreeBSD / NetBSD badly fail many of these, with impossible | 
|  | # results like (0,6)(4,5)(6,6). | 
|  |  | 
|  | :HA#260:E	(a|ab|c|bcd){0,}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#261:E	(a|ab|c|bcd){1,}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#262:E	(a|ab|c|bcd){2,}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#263:E	(a|ab|c|bcd){3,}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#264:E	(a|ab|c|bcd){4,}(d*)	ababcd	NOMATCH | 
|  | :HA#265:E	(a|ab|c|bcd){0,10}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#266:E	(a|ab|c|bcd){1,10}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#267:E	(a|ab|c|bcd){2,10}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#268:E	(a|ab|c|bcd){3,10}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#269:E	(a|ab|c|bcd){4,10}(d*)	ababcd	NOMATCH | 
|  | :HA#270:E	(a|ab|c|bcd)*(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#271:E	(a|ab|c|bcd)+(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  |  | 
|  | # The above worked on Linux/GLIBC but the following often fail. | 
|  | # They also trip up OS X / FreeBSD / NetBSD: | 
|  |  | 
|  | #:HA#280:E	(ab|a|c|bcd){0,}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#280:E	(ab|a|c|bcd){0,}(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go | 
|  | #:HA#281:E	(ab|a|c|bcd){1,}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#281:E	(ab|a|c|bcd){1,}(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go | 
|  | #:HA#282:E	(ab|a|c|bcd){2,}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#282:E	(ab|a|c|bcd){2,}(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go | 
|  | #:HA#283:E	(ab|a|c|bcd){3,}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#283:E	(ab|a|c|bcd){3,}(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go | 
|  | :HA#284:E	(ab|a|c|bcd){4,}(d*)	ababcd	NOMATCH | 
|  | #:HA#285:E	(ab|a|c|bcd){0,10}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#285:E	(ab|a|c|bcd){0,10}(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go | 
|  | #:HA#286:E	(ab|a|c|bcd){1,10}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#286:E	(ab|a|c|bcd){1,10}(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go | 
|  | #:HA#287:E	(ab|a|c|bcd){2,10}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#287:E	(ab|a|c|bcd){2,10}(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go | 
|  | #:HA#288:E	(ab|a|c|bcd){3,10}(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#288:E	(ab|a|c|bcd){3,10}(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go | 
|  | :HA#289:E	(ab|a|c|bcd){4,10}(d*)	ababcd	NOMATCH | 
|  | #:HA#290:E	(ab|a|c|bcd)*(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#290:E	(ab|a|c|bcd)*(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go | 
|  | #:HA#291:E	(ab|a|c|bcd)+(d*)	ababcd	(0,6)(3,6)(6,6) | 
|  | :HA#291:E	(ab|a|c|bcd)+(d*)	ababcd	(0,6)(4,5)(5,6)	RE2/Go |