1NOTE	implicit vs. explicit repetitions : 2009-02-02
2
3# Glenn Fowler <gsf@research.att.com>
4# conforming matches (column 4) must match one of the following BREs
5#	NOMATCH
6#	(0,.)\((\(.\),\(.\))(?,?)(\2,\3)\)*
7#	(0,.)\((\(.\),\(.\))(\2,\3)(?,?)\)*
8# i.e., each 3-tuple has two identical elements and one (?,?)
9
10E	((..)|(.))				NULL		NOMATCH
11E	((..)|(.))((..)|(.))			NULL		NOMATCH
12E	((..)|(.))((..)|(.))((..)|(.))		NULL		NOMATCH
13
14E	((..)|(.)){1}				NULL		NOMATCH
15E	((..)|(.)){2}				NULL		NOMATCH
16E	((..)|(.)){3}				NULL		NOMATCH
17
18E	((..)|(.))*				NULL		(0,0)
19
20E	((..)|(.))				a		(0,1)(0,1)(?,?)(0,1)
21E	((..)|(.))((..)|(.))			a		NOMATCH
22E	((..)|(.))((..)|(.))((..)|(.))		a		NOMATCH
23
24E	((..)|(.)){1}				a		(0,1)(0,1)(?,?)(0,1)
25E	((..)|(.)){2}				a		NOMATCH
26E	((..)|(.)){3}				a		NOMATCH
27
28E	((..)|(.))*				a		(0,1)(0,1)(?,?)(0,1)
29
30E	((..)|(.))				aa		(0,2)(0,2)(0,2)(?,?)
31E	((..)|(.))((..)|(.))			aa		(0,2)(0,1)(?,?)(0,1)(1,2)(?,?)(1,2)
32E	((..)|(.))((..)|(.))((..)|(.))		aa		NOMATCH
33
34E	((..)|(.)){1}				aa		(0,2)(0,2)(0,2)(?,?)
35E	((..)|(.)){2}				aa		(0,2)(1,2)(?,?)(1,2)
36E	((..)|(.)){3}				aa		NOMATCH
37
38E	((..)|(.))*				aa		(0,2)(0,2)(0,2)(?,?)
39
40E	((..)|(.))				aaa		(0,2)(0,2)(0,2)(?,?)
41E	((..)|(.))((..)|(.))			aaa		(0,3)(0,2)(0,2)(?,?)(2,3)(?,?)(2,3)
42E	((..)|(.))((..)|(.))((..)|(.))		aaa		(0,3)(0,1)(?,?)(0,1)(1,2)(?,?)(1,2)(2,3)(?,?)(2,3)
43
44E	((..)|(.)){1}				aaa		(0,2)(0,2)(0,2)(?,?)
45E	((..)|(.)){2}				aaa		(0,3)(2,3)(?,?)(2,3)
46E	((..)|(.)){3}				aaa		(0,3)(2,3)(?,?)(2,3)
47
48E	((..)|(.))*				aaa		(0,3)(2,3)(?,?)(2,3)
49
50E	((..)|(.))				aaaa		(0,2)(0,2)(0,2)(?,?)
51E	((..)|(.))((..)|(.))			aaaa		(0,4)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)
52E	((..)|(.))((..)|(.))((..)|(.))		aaaa		(0,4)(0,2)(0,2)(?,?)(2,3)(?,?)(2,3)(3,4)(?,?)(3,4)
53
54E	((..)|(.)){1}				aaaa		(0,2)(0,2)(0,2)(?,?)
55E	((..)|(.)){2}				aaaa		(0,4)(2,4)(2,4)(?,?)
56E	((..)|(.)){3}				aaaa		(0,4)(3,4)(?,?)(3,4)
57
58E	((..)|(.))*				aaaa		(0,4)(2,4)(2,4)(?,?)
59
60E	((..)|(.))				aaaaa		(0,2)(0,2)(0,2)(?,?)
61E	((..)|(.))((..)|(.))			aaaaa		(0,4)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)
62E	((..)|(.))((..)|(.))((..)|(.))		aaaaa		(0,5)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)(4,5)(?,?)(4,5)
63
64E	((..)|(.)){1}				aaaaa		(0,2)(0,2)(0,2)(?,?)
65E	((..)|(.)){2}				aaaaa		(0,4)(2,4)(2,4)(?,?)
66E	((..)|(.)){3}				aaaaa		(0,5)(4,5)(?,?)(4,5)
67
68E	((..)|(.))*				aaaaa		(0,5)(4,5)(?,?)(4,5)
69
70E	((..)|(.))				aaaaaa		(0,2)(0,2)(0,2)(?,?)
71E	((..)|(.))((..)|(.))			aaaaaa		(0,4)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)
72E	((..)|(.))((..)|(.))((..)|(.))		aaaaaa		(0,6)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)(4,6)(4,6)(?,?)
73
74E	((..)|(.)){1}				aaaaaa		(0,2)(0,2)(0,2)(?,?)
75E	((..)|(.)){2}				aaaaaa		(0,4)(2,4)(2,4)(?,?)
76E	((..)|(.)){3}				aaaaaa		(0,6)(4,6)(4,6)(?,?)
77
78E	((..)|(.))*				aaaaaa		(0,6)(4,6)(4,6)(?,?)
79
80NOTE	additional repetition tests graciously provided by Chris Kuklewicz www.haskell.org 2009-02-02
81
82# These test a bug in OS X / FreeBSD / NetBSD, and libtree.
83# Linux/GLIBC gets the {8,} and {8,8} wrong.
84
85:HA#100:E	X(.?){0,}Y	X1234567Y	(0,9)(7,8)
86:HA#101:E	X(.?){1,}Y	X1234567Y	(0,9)(7,8)
87:HA#102:E	X(.?){2,}Y	X1234567Y	(0,9)(7,8)
88:HA#103:E	X(.?){3,}Y	X1234567Y	(0,9)(7,8)
89:HA#104:E	X(.?){4,}Y	X1234567Y	(0,9)(7,8)
90:HA#105:E	X(.?){5,}Y	X1234567Y	(0,9)(7,8)
91:HA#106:E	X(.?){6,}Y	X1234567Y	(0,9)(7,8)
92:HA#107:E	X(.?){7,}Y	X1234567Y	(0,9)(7,8)
93:HA#108:E	X(.?){8,}Y	X1234567Y	(0,9)(8,8)
94:HA#110:E	X(.?){0,8}Y	X1234567Y	(0,9)(7,8)
95:HA#111:E	X(.?){1,8}Y	X1234567Y	(0,9)(7,8)
96:HA#112:E	X(.?){2,8}Y	X1234567Y	(0,9)(7,8)
97:HA#113:E	X(.?){3,8}Y	X1234567Y	(0,9)(7,8)
98:HA#114:E	X(.?){4,8}Y	X1234567Y	(0,9)(7,8)
99:HA#115:E	X(.?){5,8}Y	X1234567Y	(0,9)(7,8)
100:HA#116:E	X(.?){6,8}Y	X1234567Y	(0,9)(7,8)
101:HA#117:E	X(.?){7,8}Y	X1234567Y	(0,9)(7,8)
102:HA#118:E	X(.?){8,8}Y	X1234567Y	(0,9)(8,8)
103
104# These test a fixed bug in my regex-tdfa that did not keep the expanded
105# form properly grouped, so right association did the wrong thing with
106# these ambiguous patterns (crafted just to test my code when I became
107# suspicious of my implementation).  The first subexpression should use
108# "ab" then "a" then "bcd".
109
110# OS X / FreeBSD / NetBSD badly fail many of these, with impossible
111# results like (0,6)(4,5)(6,6).
112
113:HA#260:E	(a|ab|c|bcd){0,}(d*)	ababcd	(0,6)(3,6)(6,6)
114:HA#261:E	(a|ab|c|bcd){1,}(d*)	ababcd	(0,6)(3,6)(6,6)
115:HA#262:E	(a|ab|c|bcd){2,}(d*)	ababcd	(0,6)(3,6)(6,6)
116:HA#263:E	(a|ab|c|bcd){3,}(d*)	ababcd	(0,6)(3,6)(6,6)
117:HA#264:E	(a|ab|c|bcd){4,}(d*)	ababcd	NOMATCH
118:HA#265:E	(a|ab|c|bcd){0,10}(d*)	ababcd	(0,6)(3,6)(6,6)
119:HA#266:E	(a|ab|c|bcd){1,10}(d*)	ababcd	(0,6)(3,6)(6,6)
120:HA#267:E	(a|ab|c|bcd){2,10}(d*)	ababcd	(0,6)(3,6)(6,6)
121:HA#268:E	(a|ab|c|bcd){3,10}(d*)	ababcd	(0,6)(3,6)(6,6)
122:HA#269:E	(a|ab|c|bcd){4,10}(d*)	ababcd	NOMATCH
123:HA#270:E	(a|ab|c|bcd)*(d*)	ababcd	(0,6)(3,6)(6,6)
124:HA#271:E	(a|ab|c|bcd)+(d*)	ababcd	(0,6)(3,6)(6,6)
125
126# The above worked on Linux/GLIBC but the following often fail.
127# They also trip up OS X / FreeBSD / NetBSD:
128
129:HA#280:E	(ab|a|c|bcd){0,}(d*)	ababcd	(0,6)(3,6)(6,6)
130:HA#281:E	(ab|a|c|bcd){1,}(d*)	ababcd	(0,6)(3,6)(6,6)
131:HA#282:E	(ab|a|c|bcd){2,}(d*)	ababcd	(0,6)(3,6)(6,6)
132:HA#283:E	(ab|a|c|bcd){3,}(d*)	ababcd	(0,6)(3,6)(6,6)
133:HA#284:E	(ab|a|c|bcd){4,}(d*)	ababcd	NOMATCH
134:HA#285:E	(ab|a|c|bcd){0,10}(d*)	ababcd	(0,6)(3,6)(6,6)
135:HA#286:E	(ab|a|c|bcd){1,10}(d*)	ababcd	(0,6)(3,6)(6,6)
136:HA#287:E	(ab|a|c|bcd){2,10}(d*)	ababcd	(0,6)(3,6)(6,6)
137:HA#288:E	(ab|a|c|bcd){3,10}(d*)	ababcd	(0,6)(3,6)(6,6)
138:HA#289:E	(ab|a|c|bcd){4,10}(d*)	ababcd	NOMATCH
139:HA#290:E	(ab|a|c|bcd)*(d*)	ababcd	(0,6)(3,6)(6,6)
140:HA#291:E	(ab|a|c|bcd)+(d*)	ababcd	(0,6)(3,6)(6,6)
141