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 (0,1)(0,1)(1,1)
:HA#261:E (a|ab|c|bcd){1,}(d*) ababcd (0,1)(0,1)(1,1)
: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 (0,1)(0,1)(1,1)
:HA#266:E (a|ab|c|bcd){1,10}(d*) ababcd (0,1)(0,1)(1,1)
: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 (0,1)(0,1)(1,1)
:HA#271:E (a|ab|c|bcd)+(d*) ababcd (0,1)(0,1)(1,1)
# 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