1 NOTE implicit vs. explicit repetitions
: 2009-02-02
3 # Glenn Fowler <glenn.s.fowler@gmail.com>
4 # conforming matches (column 4) must match one of the following BREs
6 # (0,.)\((\(.\),\(.\))(?,?)(\2,\3)\)*
7 # (0,.)\((\(.\),\(.\))(\2,\3)(?,?)\)*
8 # i.e., each 3-tuple has two identical elements and one (?,?)
10 E
((..
)|
(.
)) NULL NOMATCH
11 E
((..
)|
(.
))((..
)|
(.
)) NULL NOMATCH
12 E
((..
)|
(.
))((..
)|
(.
))((..
)|
(.
)) NULL NOMATCH
14 E
((..
)|
(.
)){1} NULL NOMATCH
15 E
((..
)|
(.
)){2} NULL NOMATCH
16 E
((..
)|
(.
)){3} NULL NOMATCH
18 E
((..
)|
(.
))* NULL
(0,0)
20 E
((..
)|
(.
)) a
(0,1)(0,1)(?
,?
)(0,1)
21 E
((..
)|
(.
))((..
)|
(.
)) a NOMATCH
22 E
((..
)|
(.
))((..
)|
(.
))((..
)|
(.
)) a NOMATCH
24 E
((..
)|
(.
)){1} a
(0,1)(0,1)(?
,?
)(0,1)
25 E
((..
)|
(.
)){2} a NOMATCH
26 E
((..
)|
(.
)){3} a NOMATCH
28 E
((..
)|
(.
))* a
(0,1)(0,1)(?
,?
)(0,1)
30 E
((..
)|
(.
)) aa
(0,2)(0,2)(0,2)(?
,?
)
31 E
((..
)|
(.
))((..
)|
(.
)) aa
(0,2)(0,1)(?
,?
)(0,1)(1,2)(?
,?
)(1,2)
32 E
((..
)|
(.
))((..
)|
(.
))((..
)|
(.
)) aa NOMATCH
34 E
((..
)|
(.
)){1} aa
(0,2)(0,2)(0,2)(?
,?
)
35 E
((..
)|
(.
)){2} aa
(0,2)(1,2)(?
,?
)(1,2)
36 E
((..
)|
(.
)){3} aa NOMATCH
38 E
((..
)|
(.
))* aa
(0,2)(0,2)(0,2)(?
,?
)
40 E
((..
)|
(.
)) aaa
(0,2)(0,2)(0,2)(?
,?
)
41 E
((..
)|
(.
))((..
)|
(.
)) aaa
(0,3)(0,2)(0,2)(?
,?
)(2,3)(?
,?
)(2,3)
42 E
((..
)|
(.
))((..
)|
(.
))((..
)|
(.
)) aaa
(0,3)(0,1)(?
,?
)(0,1)(1,2)(?
,?
)(1,2)(2,3)(?
,?
)(2,3)
44 E
((..
)|
(.
)){1} aaa
(0,2)(0,2)(0,2)(?
,?
)
45 E
((..
)|
(.
)){2} aaa
(0,3)(2,3)(?
,?
)(2,3)
46 E
((..
)|
(.
)){3} aaa
(0,3)(2,3)(?
,?
)(2,3)
48 E
((..
)|
(.
))* aaa
(0,3)(2,3)(?
,?
)(2,3)
50 E
((..
)|
(.
)) aaaa
(0,2)(0,2)(0,2)(?
,?
)
51 E
((..
)|
(.
))((..
)|
(.
)) aaaa
(0,4)(0,2)(0,2)(?
,?
)(2,4)(2,4)(?
,?
)
52 E
((..
)|
(.
))((..
)|
(.
))((..
)|
(.
)) aaaa
(0,4)(0,2)(0,2)(?
,?
)(2,3)(?
,?
)(2,3)(3,4)(?
,?
)(3,4)
54 E
((..
)|
(.
)){1} aaaa
(0,2)(0,2)(0,2)(?
,?
)
55 E
((..
)|
(.
)){2} aaaa
(0,4)(2,4)(2,4)(?
,?
)
56 E
((..
)|
(.
)){3} aaaa
(0,4)(3,4)(?
,?
)(3,4)
58 E
((..
)|
(.
))* aaaa
(0,4)(2,4)(2,4)(?
,?
)
60 E
((..
)|
(.
)) aaaaa
(0,2)(0,2)(0,2)(?
,?
)
61 E
((..
)|
(.
))((..
)|
(.
)) aaaaa
(0,4)(0,2)(0,2)(?
,?
)(2,4)(2,4)(?
,?
)
62 E
((..
)|
(.
))((..
)|
(.
))((..
)|
(.
)) aaaaa
(0,5)(0,2)(0,2)(?
,?
)(2,4)(2,4)(?
,?
)(4,5)(?
,?
)(4,5)
64 E
((..
)|
(.
)){1} aaaaa
(0,2)(0,2)(0,2)(?
,?
)
65 E
((..
)|
(.
)){2} aaaaa
(0,4)(2,4)(2,4)(?
,?
)
66 E
((..
)|
(.
)){3} aaaaa
(0,5)(4,5)(?
,?
)(4,5)
68 E
((..
)|
(.
))* aaaaa
(0,5)(4,5)(?
,?
)(4,5)
70 E
((..
)|
(.
)) aaaaaa
(0,2)(0,2)(0,2)(?
,?
)
71 E
((..
)|
(.
))((..
)|
(.
)) aaaaaa
(0,4)(0,2)(0,2)(?
,?
)(2,4)(2,4)(?
,?
)
72 E
((..
)|
(.
))((..
)|
(.
))((..
)|
(.
)) aaaaaa
(0,6)(0,2)(0,2)(?
,?
)(2,4)(2,4)(?
,?
)(4,6)(4,6)(?
,?
)
74 E
((..
)|
(.
)){1} aaaaaa
(0,2)(0,2)(0,2)(?
,?
)
75 E
((..
)|
(.
)){2} aaaaaa
(0,4)(2,4)(2,4)(?
,?
)
76 E
((..
)|
(.
)){3} aaaaaa
(0,6)(4,6)(4,6)(?
,?
)
78 E
((..
)|
(.
))* aaaaaa
(0,6)(4,6)(4,6)(?
,?
)
80 NOTE additional repetition tests graciously provided
by Chris Kuklewicz www.haskell.org
2009-02-02
82 # These test a bug in OS X / FreeBSD / NetBSD, and libtree.
83 # Linux/GLIBC gets the {8,} and {8,8} wrong.
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)
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".
110 # OS X / FreeBSD / NetBSD badly fail many of these, with impossible
111 # results like (0,6)(4,5)(6,6).
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)
126 # The above worked on Linux/GLIBC but the following often fail.
127 # They also trip up OS X / FreeBSD / NetBSD:
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)
