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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)(?,?)
45#E ((..)|(.)){2} aaa (0,3)(2,3)(?,?)(2,3)
46E ((..)|(.)){2} aaa (0,3)(2,3)(0,2)(2,3) RE2/Go
47E ((..)|(.)){3} aaa (0,3)(2,3)(?,?)(2,3)
48
49#E ((..)|(.))* aaa (0,3)(2,3)(?,?)(2,3)
50E ((..)|(.))* aaa (0,3)(2,3)(0,2)(2,3) RE2/Go
51
52E ((..)|(.)) aaaa (0,2)(0,2)(0,2)(?,?)
53E ((..)|(.))((..)|(.)) aaaa (0,4)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)
54E ((..)|(.))((..)|(.))((..)|(.)) aaaa (0,4)(0,2)(0,2)(?,?)(2,3)(?,?)(2,3)(3,4)(?,?)(3,4)
55
56E ((..)|(.)){1} aaaa (0,2)(0,2)(0,2)(?,?)
57E ((..)|(.)){2} aaaa (0,4)(2,4)(2,4)(?,?)
58#E ((..)|(.)){3} aaaa (0,4)(3,4)(?,?)(3,4)
59E ((..)|(.)){3} aaaa (0,4)(3,4)(0,2)(3,4) RE2/Go
60
61E ((..)|(.))* aaaa (0,4)(2,4)(2,4)(?,?)
62
63E ((..)|(.)) aaaaa (0,2)(0,2)(0,2)(?,?)
64E ((..)|(.))((..)|(.)) aaaaa (0,4)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)
65E ((..)|(.))((..)|(.))((..)|(.)) aaaaa (0,5)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)(4,5)(?,?)(4,5)
66
67E ((..)|(.)){1} aaaaa (0,2)(0,2)(0,2)(?,?)
68E ((..)|(.)){2} aaaaa (0,4)(2,4)(2,4)(?,?)
69#E ((..)|(.)){3} aaaaa (0,5)(4,5)(?,?)(4,5)
70E ((..)|(.)){3} aaaaa (0,5)(4,5)(2,4)(4,5) RE2/Go
71
72#E ((..)|(.))* aaaaa (0,5)(4,5)(?,?)(4,5)
73E ((..)|(.))* aaaaa (0,5)(4,5)(2,4)(4,5) RE2/Go
74
75E ((..)|(.)) aaaaaa (0,2)(0,2)(0,2)(?,?)
76E ((..)|(.))((..)|(.)) aaaaaa (0,4)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)
77E ((..)|(.))((..)|(.))((..)|(.)) aaaaaa (0,6)(0,2)(0,2)(?,?)(2,4)(2,4)(?,?)(4,6)(4,6)(?,?)
78
79E ((..)|(.)){1} aaaaaa (0,2)(0,2)(0,2)(?,?)
80E ((..)|(.)){2} aaaaaa (0,4)(2,4)(2,4)(?,?)
81E ((..)|(.)){3} aaaaaa (0,6)(4,6)(4,6)(?,?)
82
83E ((..)|(.))* aaaaaa (0,6)(4,6)(4,6)(?,?)
84
85NOTE additional repetition tests graciously provided by Chris Kuklewicz www.haskell.org 2009-02-02
86
87# These test a bug in OS X / FreeBSD / NetBSD, and libtree.
88# Linux/GLIBC gets the {8,} and {8,8} wrong.
89
90:HA#100:E X(.?){0,}Y X1234567Y (0,9)(7,8)
91:HA#101:E X(.?){1,}Y X1234567Y (0,9)(7,8)
92:HA#102:E X(.?){2,}Y X1234567Y (0,9)(7,8)
93:HA#103:E X(.?){3,}Y X1234567Y (0,9)(7,8)
94:HA#104:E X(.?){4,}Y X1234567Y (0,9)(7,8)
95:HA#105:E X(.?){5,}Y X1234567Y (0,9)(7,8)
96:HA#106:E X(.?){6,}Y X1234567Y (0,9)(7,8)
97:HA#107:E X(.?){7,}Y X1234567Y (0,9)(7,8)
98:HA#108:E X(.?){8,}Y X1234567Y (0,9)(8,8)
99#:HA#110:E X(.?){0,8}Y X1234567Y (0,9)(7,8)
100:HA#110:E X(.?){0,8}Y X1234567Y (0,9)(8,8) RE2/Go
101#:HA#111:E X(.?){1,8}Y X1234567Y (0,9)(7,8)
102:HA#111:E X(.?){1,8}Y X1234567Y (0,9)(8,8) RE2/Go
103#:HA#112:E X(.?){2,8}Y X1234567Y (0,9)(7,8)
104:HA#112:E X(.?){2,8}Y X1234567Y (0,9)(8,8) RE2/Go
105#:HA#113:E X(.?){3,8}Y X1234567Y (0,9)(7,8)
106:HA#113:E X(.?){3,8}Y X1234567Y (0,9)(8,8) RE2/Go
107#:HA#114:E X(.?){4,8}Y X1234567Y (0,9)(7,8)
108:HA#114:E X(.?){4,8}Y X1234567Y (0,9)(8,8) RE2/Go
109#:HA#115:E X(.?){5,8}Y X1234567Y (0,9)(7,8)
110:HA#115:E X(.?){5,8}Y X1234567Y (0,9)(8,8) RE2/Go
111#:HA#116:E X(.?){6,8}Y X1234567Y (0,9)(7,8)
112:HA#116:E X(.?){6,8}Y X1234567Y (0,9)(8,8) RE2/Go
113#:HA#117:E X(.?){7,8}Y X1234567Y (0,9)(7,8)
114:HA#117:E X(.?){7,8}Y X1234567Y (0,9)(8,8) RE2/Go
115:HA#118:E X(.?){8,8}Y X1234567Y (0,9)(8,8)
116
117# These test a fixed bug in my regex-tdfa that did not keep the expanded
118# form properly grouped, so right association did the wrong thing with
119# these ambiguous patterns (crafted just to test my code when I became
120# suspicious of my implementation). The first subexpression should use
121# "ab" then "a" then "bcd".
122
123# OS X / FreeBSD / NetBSD badly fail many of these, with impossible
124# results like (0,6)(4,5)(6,6).
125
126:HA#260:E (a|ab|c|bcd){0,}(d*) ababcd (0,1)(0,1)(1,1)
127:HA#261:E (a|ab|c|bcd){1,}(d*) ababcd (0,1)(0,1)(1,1)
128:HA#262:E (a|ab|c|bcd){2,}(d*) ababcd (0,6)(3,6)(6,6)
129:HA#263:E (a|ab|c|bcd){3,}(d*) ababcd (0,6)(3,6)(6,6)
130:HA#264:E (a|ab|c|bcd){4,}(d*) ababcd NOMATCH
131:HA#265:E (a|ab|c|bcd){0,10}(d*) ababcd (0,1)(0,1)(1,1)
132:HA#266:E (a|ab|c|bcd){1,10}(d*) ababcd (0,1)(0,1)(1,1)
133:HA#267:E (a|ab|c|bcd){2,10}(d*) ababcd (0,6)(3,6)(6,6)
134:HA#268:E (a|ab|c|bcd){3,10}(d*) ababcd (0,6)(3,6)(6,6)
135:HA#269:E (a|ab|c|bcd){4,10}(d*) ababcd NOMATCH
136:HA#270:E (a|ab|c|bcd)*(d*) ababcd (0,1)(0,1)(1,1)
137:HA#271:E (a|ab|c|bcd)+(d*) ababcd (0,1)(0,1)(1,1)
138
139# The above worked on Linux/GLIBC but the following often fail.
140# They also trip up OS X / FreeBSD / NetBSD:
141
142#:HA#280:E (ab|a|c|bcd){0,}(d*) ababcd (0,6)(3,6)(6,6)
143:HA#280:E (ab|a|c|bcd){0,}(d*) ababcd (0,6)(4,5)(5,6) RE2/Go
144#:HA#281:E (ab|a|c|bcd){1,}(d*) ababcd (0,6)(3,6)(6,6)
145:HA#281:E (ab|a|c|bcd){1,}(d*) ababcd (0,6)(4,5)(5,6) RE2/Go
146#:HA#282:E (ab|a|c|bcd){2,}(d*) ababcd (0,6)(3,6)(6,6)
147:HA#282:E (ab|a|c|bcd){2,}(d*) ababcd (0,6)(4,5)(5,6) RE2/Go
148#:HA#283:E (ab|a|c|bcd){3,}(d*) ababcd (0,6)(3,6)(6,6)
149:HA#283:E (ab|a|c|bcd){3,}(d*) ababcd (0,6)(4,5)(5,6) RE2/Go
150:HA#284:E (ab|a|c|bcd){4,}(d*) ababcd NOMATCH
151#:HA#285:E (ab|a|c|bcd){0,10}(d*) ababcd (0,6)(3,6)(6,6)
152:HA#285:E (ab|a|c|bcd){0,10}(d*) ababcd (0,6)(4,5)(5,6) RE2/Go
153#:HA#286:E (ab|a|c|bcd){1,10}(d*) ababcd (0,6)(3,6)(6,6)
154:HA#286:E (ab|a|c|bcd){1,10}(d*) ababcd (0,6)(4,5)(5,6) RE2/Go
155#:HA#287:E (ab|a|c|bcd){2,10}(d*) ababcd (0,6)(3,6)(6,6)
156:HA#287:E (ab|a|c|bcd){2,10}(d*) ababcd (0,6)(4,5)(5,6) RE2/Go
157#:HA#288:E (ab|a|c|bcd){3,10}(d*) ababcd (0,6)(3,6)(6,6)
158:HA#288:E (ab|a|c|bcd){3,10}(d*) ababcd (0,6)(4,5)(5,6) RE2/Go
159:HA#289:E (ab|a|c|bcd){4,10}(d*) ababcd NOMATCH
160#:HA#290:E (ab|a|c|bcd)*(d*) ababcd (0,6)(3,6)(6,6)
161:HA#290:E (ab|a|c|bcd)*(d*) ababcd (0,6)(4,5)(5,6) RE2/Go
162#:HA#291:E (ab|a|c|bcd)+(d*) ababcd (0,6)(3,6)(6,6)
163:HA#291:E (ab|a|c|bcd)+(d*) ababcd (0,6)(4,5)(5,6) RE2/Go