Import 'regex' package vesion 1.3.6
* Add OWNERS
* No Android.bp yet
Bug: 152884384
Test: make
Change-Id: I455caf7833b6c437c1c133bc7b2f47b83da9cbce
diff --git a/src/testdata/LICENSE b/src/testdata/LICENSE
new file mode 100644
index 0000000..f47dbf4
--- /dev/null
+++ b/src/testdata/LICENSE
@@ -0,0 +1,19 @@
+The following license covers testregex.c and all associated test data.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of THIS SOFTWARE FILE (the "Software"), to deal in the Software
+without restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, and/or sell copies of the
+Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following disclaimer:
+
+THIS SOFTWARE IS PROVIDED BY AT&T ``AS IS'' AND ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL AT&T BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/src/testdata/README b/src/testdata/README
new file mode 100644
index 0000000..6efc2da
--- /dev/null
+++ b/src/testdata/README
@@ -0,0 +1,17 @@
+Test data was taken from the Go distribution, which was in turn taken from the
+testregex test suite:
+
+ http://www2.research.att.com/~astopen/testregex/testregex.html
+
+The LICENSE in this directory corresponds to the LICENSE that the data was
+released under.
+
+The tests themselves were modified for RE2/Go. A couple were modified further
+by me (Andrew Gallant) (only in repetition.dat) so that RE2/Go would pass them.
+(Yes, it seems like RE2/Go includes failing test cases.) This may or may not
+have been a bad idea, but I think being consistent with an established Regex
+library is worth something.
+
+Note that these files are read by 'scripts/regex-match-tests.py' and turned
+into Rust tests found in 'regex_macros/tests/matches.rs'.
+
diff --git a/src/testdata/basic.dat b/src/testdata/basic.dat
new file mode 100644
index 0000000..632e1bb
--- /dev/null
+++ b/src/testdata/basic.dat
@@ -0,0 +1,221 @@
+NOTE all standard compliant implementations should pass these : 2002-05-31
+
+BE abracadabra$ abracadabracadabra (7,18)
+BE a...b abababbb (2,7)
+BE XXXXXX ..XXXXXX (2,8)
+E \) () (1,2)
+BE a] a]a (0,2)
+B } } (0,1)
+E \} } (0,1)
+BE \] ] (0,1)
+B ] ] (0,1)
+E ] ] (0,1)
+B { { (0,1)
+B } } (0,1)
+BE ^a ax (0,1)
+BE \^a a^a (1,3)
+BE a\^ a^ (0,2)
+BE a$ aa (1,2)
+BE a\$ a$ (0,2)
+BE ^$ NULL (0,0)
+E $^ NULL (0,0)
+E a($) aa (1,2)(2,2)
+E a*(^a) aa (0,1)(0,1)
+E (..)*(...)* a (0,0)
+E (..)*(...)* abcd (0,4)(2,4)
+E (ab|a)(bc|c) abc (0,3)(0,2)(2,3)
+E (ab)c|abc abc (0,3)(0,2)
+E a{0}b ab (1,2)
+E (a*)(b?)(b+)b{3} aaabbbbbbb (0,10)(0,3)(3,4)(4,7)
+E (a*)(b{0,1})(b{1,})b{3} aaabbbbbbb (0,10)(0,3)(3,4)(4,7)
+E a{9876543210} NULL BADBR
+E ((a|a)|a) a (0,1)(0,1)(0,1)
+E (a*)(a|aa) aaaa (0,4)(0,3)(3,4)
+E a*(a.|aa) aaaa (0,4)(2,4)
+E a(b)|c(d)|a(e)f aef (0,3)(?,?)(?,?)(1,2)
+E (a|b)?.* b (0,1)(0,1)
+E (a|b)c|a(b|c) ac (0,2)(0,1)
+E (a|b)c|a(b|c) ab (0,2)(?,?)(1,2)
+E (a|b)*c|(a|ab)*c abc (0,3)(1,2)
+E (a|b)*c|(a|ab)*c xc (1,2)
+E (.a|.b).*|.*(.a|.b) xa (0,2)(0,2)
+E a?(ab|ba)ab abab (0,4)(0,2)
+E a?(ac{0}b|ba)ab abab (0,4)(0,2)
+E ab|abab abbabab (0,2)
+E aba|bab|bba baaabbbaba (5,8)
+E aba|bab baaabbbaba (6,9)
+E (aa|aaa)*|(a|aaaaa) aa (0,2)(0,2)
+E (a.|.a.)*|(a|.a...) aa (0,2)(0,2)
+E ab|a xabc (1,3)
+E ab|a xxabc (2,4)
+Ei (?-u)(Ab|cD)* aBcD (0,4)(2,4)
+BE [^-] --a (2,3)
+BE [a-]* --a (0,3)
+BE [a-m-]* --amoma-- (0,4)
+E :::1:::0:|:::1:1:0: :::0:::1:::1:::0: (8,17)
+E :::1:::0:|:::1:1:1: :::0:::1:::1:::0: (8,17)
+{E [[:upper:]] A (0,1) [[<element>]] not supported
+E [[:lower:]]+ `az{ (1,3)
+E [[:upper:]]+ @AZ[ (1,3)
+# No collation in Go
+#BE [[-]] [[-]] (2,4)
+#BE [[.NIL.]] NULL ECOLLATE
+#BE [[=aleph=]] NULL ECOLLATE
+}
+BE$ \n \n (0,1)
+BEn$ \n \n (0,1)
+BE$ [^a] \n (0,1)
+BE$ \na \na (0,2)
+E (a)(b)(c) abc (0,3)(0,1)(1,2)(2,3)
+BE xxx xxx (0,3)
+E1 (^|[ (,;])((([Ff]eb[^ ]* *|0*2/|\* */?)0*[6-7]))([^0-9]|$) feb 6, (0,6)
+E1 (^|[ (,;])((([Ff]eb[^ ]* *|0*2/|\* */?)0*[6-7]))([^0-9]|$) 2/7 (0,3)
+E1 (^|[ (,;])((([Ff]eb[^ ]* *|0*2/|\* */?)0*[6-7]))([^0-9]|$) feb 1,Feb 6 (5,11)
+E3 ((((((((((((((((((((((((((((((x)))))))))))))))))))))))))))))) x (0,1)(0,1)(0,1)
+E3 ((((((((((((((((((((((((((((((x))))))))))))))))))))))))))))))* xx (0,2)(1,2)(1,2)
+E a?(ab|ba)* ababababababababababababababababababababababababababababababababababababababababa (0,81)(79,81)
+E abaa|abbaa|abbbaa|abbbbaa ababbabbbabbbabbbbabbbbaa (18,25)
+E abaa|abbaa|abbbaa|abbbbaa ababbabbbabbbabbbbabaa (18,22)
+E aaac|aabc|abac|abbc|baac|babc|bbac|bbbc baaabbbabac (7,11)
+BE$ .* \x01\x7f (0,2)
+E aaaa|bbbb|cccc|ddddd|eeeeee|fffffff|gggg|hhhh|iiiii|jjjjj|kkkkk|llll XaaaXbbbXcccXdddXeeeXfffXgggXhhhXiiiXjjjXkkkXlllXcbaXaaaa (53,57)
+L aaaa\nbbbb\ncccc\nddddd\neeeeee\nfffffff\ngggg\nhhhh\niiiii\njjjjj\nkkkkk\nllll XaaaXbbbXcccXdddXeeeXfffXgggXhhhXiiiXjjjXkkkXlllXcbaXaaaa NOMATCH
+E a*a*a*a*a*b aaaaaaaaab (0,10)
+BE ^ NULL (0,0)
+BE $ NULL (0,0)
+BE ^$ NULL (0,0)
+BE ^a$ a (0,1)
+BE abc abc (0,3)
+BE abc xabcy (1,4)
+BE abc ababc (2,5)
+BE ab*c abc (0,3)
+BE ab*bc abc (0,3)
+BE ab*bc abbc (0,4)
+BE ab*bc abbbbc (0,6)
+E ab+bc abbc (0,4)
+E ab+bc abbbbc (0,6)
+E ab?bc abbc (0,4)
+E ab?bc abc (0,3)
+E ab?c abc (0,3)
+BE ^abc$ abc (0,3)
+BE ^abc abcc (0,3)
+BE abc$ aabc (1,4)
+BE ^ abc (0,0)
+BE $ abc (3,3)
+BE a.c abc (0,3)
+BE a.c axc (0,3)
+BE a.*c axyzc (0,5)
+BE a[bc]d abd (0,3)
+BE a[b-d]e ace (0,3)
+BE a[b-d] aac (1,3)
+BE a[-b] a- (0,2)
+BE a[b-] a- (0,2)
+BE a] a] (0,2)
+BE a[]]b a]b (0,3)
+BE a[^bc]d aed (0,3)
+BE a[^-b]c adc (0,3)
+BE a[^]b]c adc (0,3)
+E ab|cd abc (0,2)
+E ab|cd abcd (0,2)
+E a\(b a(b (0,3)
+E a\(*b ab (0,2)
+E a\(*b a((b (0,4)
+E ((a)) abc (0,1)(0,1)(0,1)
+E (a)b(c) abc (0,3)(0,1)(2,3)
+E a+b+c aabbabc (4,7)
+E a* aaa (0,3)
+#E (a*)* - (0,0)(0,0)
+E (a*)* - (0,0)(?,?) RE2/Go
+E (a*)+ - (0,0)(0,0)
+#E (a*|b)* - (0,0)(0,0)
+E (a*|b)* - (0,0)(?,?) RE2/Go
+E (a+|b)* ab (0,2)(1,2)
+E (a+|b)+ ab (0,2)(1,2)
+E (a+|b)? ab (0,1)(0,1)
+BE [^ab]* cde (0,3)
+#E (^)* - (0,0)(0,0)
+E (^)* - (0,0)(?,?) RE2/Go
+BE a* NULL (0,0)
+E ([abc])*d abbbcd (0,6)(4,5)
+E ([abc])*bcd abcd (0,4)(0,1)
+E a|b|c|d|e e (0,1)
+E (a|b|c|d|e)f ef (0,2)(0,1)
+#E ((a*|b))* - (0,0)(0,0)(0,0)
+E ((a*|b))* - (0,0)(?,?)(?,?) RE2/Go
+BE abcd*efg abcdefg (0,7)
+BE ab* xabyabbbz (1,3)
+BE ab* xayabbbz (1,2)
+E (ab|cd)e abcde (2,5)(2,4)
+BE [abhgefdc]ij hij (0,3)
+E (a|b)c*d abcd (1,4)(1,2)
+E (ab|ab*)bc abc (0,3)(0,1)
+E a([bc]*)c* abc (0,3)(1,3)
+E a([bc]*)(c*d) abcd (0,4)(1,3)(3,4)
+E a([bc]+)(c*d) abcd (0,4)(1,3)(3,4)
+E a([bc]*)(c+d) abcd (0,4)(1,2)(2,4)
+E a[bcd]*dcdcde adcdcde (0,7)
+E (ab|a)b*c abc (0,3)(0,2)
+E ((a)(b)c)(d) abcd (0,4)(0,3)(0,1)(1,2)(3,4)
+BE [A-Za-z_][A-Za-z0-9_]* alpha (0,5)
+E ^a(bc+|b[eh])g|.h$ abh (1,3)
+E (bc+d$|ef*g.|h?i(j|k)) effgz (0,5)(0,5)
+E (bc+d$|ef*g.|h?i(j|k)) ij (0,2)(0,2)(1,2)
+E (bc+d$|ef*g.|h?i(j|k)) reffgz (1,6)(1,6)
+E (((((((((a))))))))) a (0,1)(0,1)(0,1)(0,1)(0,1)(0,1)(0,1)(0,1)(0,1)(0,1)
+BE multiple words multiple words yeah (0,14)
+E (.*)c(.*) abcde (0,5)(0,2)(3,5)
+BE abcd abcd (0,4)
+E a(bc)d abcd (0,4)(1,3)
+E a[-]?c ac (0,3)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Qaddafi (0,15)(?,?)(10,12)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Mo'ammar Gadhafi (0,16)(?,?)(11,13)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Kaddafi (0,15)(?,?)(10,12)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Qadhafi (0,15)(?,?)(10,12)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Gadafi (0,14)(?,?)(10,11)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Mu'ammar Qadafi (0,15)(?,?)(11,12)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Moamar Gaddafi (0,14)(?,?)(9,11)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Mu'ammar Qadhdhafi (0,18)(?,?)(13,15)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Khaddafi (0,16)(?,?)(11,13)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Ghaddafy (0,16)(?,?)(11,13)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Ghadafi (0,15)(?,?)(11,12)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Ghaddafi (0,16)(?,?)(11,13)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muamar Kaddafi (0,14)(?,?)(9,11)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Quathafi (0,16)(?,?)(11,13)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Muammar Gheddafi (0,16)(?,?)(11,13)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Moammar Khadafy (0,15)(?,?)(11,12)
+E M[ou]'?am+[ae]r .*([AEae]l[- ])?[GKQ]h?[aeu]+([dtz][dhz]?)+af[iy] Moammar Qudhafi (0,15)(?,?)(10,12)
+E a+(b|c)*d+ aabcdd (0,6)(3,4)
+E ^.+$ vivi (0,4)
+E ^(.+)$ vivi (0,4)(0,4)
+E ^([^!.]+).att.com!(.+)$ gryphon.att.com!eby (0,19)(0,7)(16,19)
+E ^([^!]+!)?([^!]+)$ bas (0,3)(?,?)(0,3)
+E ^([^!]+!)?([^!]+)$ bar!bas (0,7)(0,4)(4,7)
+E ^([^!]+!)?([^!]+)$ foo!bas (0,7)(0,4)(4,7)
+E ^.+!([^!]+!)([^!]+)$ foo!bar!bas (0,11)(4,8)(8,11)
+E ((foo)|(bar))!bas bar!bas (0,7)(0,3)(?,?)(0,3)
+E ((foo)|(bar))!bas foo!bar!bas (4,11)(4,7)(?,?)(4,7)
+E ((foo)|(bar))!bas foo!bas (0,7)(0,3)(0,3)
+E ((foo)|bar)!bas bar!bas (0,7)(0,3)
+E ((foo)|bar)!bas foo!bar!bas (4,11)(4,7)
+E ((foo)|bar)!bas foo!bas (0,7)(0,3)(0,3)
+E (foo|(bar))!bas bar!bas (0,7)(0,3)(0,3)
+E (foo|(bar))!bas foo!bar!bas (4,11)(4,7)(4,7)
+E (foo|(bar))!bas foo!bas (0,7)(0,3)
+E (foo|bar)!bas bar!bas (0,7)(0,3)
+E (foo|bar)!bas foo!bar!bas (4,11)(4,7)
+E (foo|bar)!bas foo!bas (0,7)(0,3)
+E ^(([^!]+!)?([^!]+)|.+!([^!]+!)([^!]+))$ foo!bar!bas (0,11)(0,11)(?,?)(?,?)(4,8)(8,11)
+E ^([^!]+!)?([^!]+)$|^.+!([^!]+!)([^!]+)$ bas (0,3)(?,?)(0,3)
+E ^([^!]+!)?([^!]+)$|^.+!([^!]+!)([^!]+)$ bar!bas (0,7)(0,4)(4,7)
+E ^([^!]+!)?([^!]+)$|^.+!([^!]+!)([^!]+)$ foo!bar!bas (0,11)(?,?)(?,?)(4,8)(8,11)
+E ^([^!]+!)?([^!]+)$|^.+!([^!]+!)([^!]+)$ foo!bas (0,7)(0,4)(4,7)
+E ^(([^!]+!)?([^!]+)|.+!([^!]+!)([^!]+))$ bas (0,3)(0,3)(?,?)(0,3)
+E ^(([^!]+!)?([^!]+)|.+!([^!]+!)([^!]+))$ bar!bas (0,7)(0,7)(0,4)(4,7)
+E ^(([^!]+!)?([^!]+)|.+!([^!]+!)([^!]+))$ foo!bar!bas (0,11)(0,11)(?,?)(?,?)(4,8)(8,11)
+E ^(([^!]+!)?([^!]+)|.+!([^!]+!)([^!]+))$ foo!bas (0,7)(0,7)(0,4)(4,7)
+E .*(/XXX).* /XXX (0,4)(0,4)
+E .*(\\XXX).* \XXX (0,4)(0,4)
+E \\XXX \XXX (0,4)
+E .*(/000).* /000 (0,4)(0,4)
+E .*(\\000).* \000 (0,4)(0,4)
+E \\000 \000 (0,4)
diff --git a/src/testdata/nullsubexpr.dat b/src/testdata/nullsubexpr.dat
new file mode 100644
index 0000000..2e18fbb
--- /dev/null
+++ b/src/testdata/nullsubexpr.dat
@@ -0,0 +1,79 @@
+NOTE null subexpression matches : 2002-06-06
+
+E (a*)* a (0,1)(0,1)
+#E SAME x (0,0)(0,0)
+E SAME x (0,0)(?,?) RE2/Go
+E SAME aaaaaa (0,6)(0,6)
+E SAME aaaaaax (0,6)(0,6)
+E (a*)+ a (0,1)(0,1)
+E SAME x (0,0)(0,0)
+E SAME aaaaaa (0,6)(0,6)
+E SAME aaaaaax (0,6)(0,6)
+E (a+)* a (0,1)(0,1)
+E SAME x (0,0)
+E SAME aaaaaa (0,6)(0,6)
+E SAME aaaaaax (0,6)(0,6)
+E (a+)+ a (0,1)(0,1)
+E SAME x NOMATCH
+E SAME aaaaaa (0,6)(0,6)
+E SAME aaaaaax (0,6)(0,6)
+
+E ([a]*)* a (0,1)(0,1)
+#E SAME x (0,0)(0,0)
+E SAME x (0,0)(?,?) RE2/Go
+E SAME aaaaaa (0,6)(0,6)
+E SAME aaaaaax (0,6)(0,6)
+E ([a]*)+ a (0,1)(0,1)
+E SAME x (0,0)(0,0)
+E SAME aaaaaa (0,6)(0,6)
+E SAME aaaaaax (0,6)(0,6)
+E ([^b]*)* a (0,1)(0,1)
+#E SAME b (0,0)(0,0)
+E SAME b (0,0)(?,?) RE2/Go
+E SAME aaaaaa (0,6)(0,6)
+E SAME aaaaaab (0,6)(0,6)
+E ([ab]*)* a (0,1)(0,1)
+E SAME aaaaaa (0,6)(0,6)
+E SAME ababab (0,6)(0,6)
+E SAME bababa (0,6)(0,6)
+E SAME b (0,1)(0,1)
+E SAME bbbbbb (0,6)(0,6)
+E SAME aaaabcde (0,5)(0,5)
+E ([^a]*)* b (0,1)(0,1)
+E SAME bbbbbb (0,6)(0,6)
+#E SAME aaaaaa (0,0)(0,0)
+E SAME aaaaaa (0,0)(?,?) RE2/Go
+E ([^ab]*)* ccccxx (0,6)(0,6)
+#E SAME ababab (0,0)(0,0)
+E SAME ababab (0,0)(?,?) RE2/Go
+
+E ((z)+|a)* zabcde (0,2)(1,2)
+
+#{E a+? aaaaaa (0,1) no *? +? mimimal match ops
+#E (a) aaa (0,1)(0,1)
+#E (a*?) aaa (0,0)(0,0)
+#E (a)*? aaa (0,0)
+#E (a*?)*? aaa (0,0)
+#}
+
+B \(a*\)*\(x\) x (0,1)(0,0)(0,1)
+B \(a*\)*\(x\) ax (0,2)(0,1)(1,2)
+B \(a*\)*\(x\) axa (0,2)(0,1)(1,2)
+B \(a*\)*\(x\)\(\1\) x (0,1)(0,0)(0,1)(1,1)
+B \(a*\)*\(x\)\(\1\) ax (0,2)(1,1)(1,2)(2,2)
+B \(a*\)*\(x\)\(\1\) axa (0,3)(0,1)(1,2)(2,3)
+B \(a*\)*\(x\)\(\1\)\(x\) axax (0,4)(0,1)(1,2)(2,3)(3,4)
+B \(a*\)*\(x\)\(\1\)\(x\) axxa (0,3)(1,1)(1,2)(2,2)(2,3)
+
+#E (a*)*(x) x (0,1)(0,0)(0,1)
+E (a*)*(x) x (0,1)(?,?)(0,1) RE2/Go
+E (a*)*(x) ax (0,2)(0,1)(1,2)
+E (a*)*(x) axa (0,2)(0,1)(1,2)
+
+E (a*)+(x) x (0,1)(0,0)(0,1)
+E (a*)+(x) ax (0,2)(0,1)(1,2)
+E (a*)+(x) axa (0,2)(0,1)(1,2)
+
+E (a*){2}(x) x (0,1)(0,0)(0,1)
+E (a*){2}(x) ax (0,2)(1,1)(1,2)
+E (a*){2}(x) axa (0,2)(1,1)(1,2)
diff --git a/src/testdata/repetition.dat b/src/testdata/repetition.dat
new file mode 100644
index 0000000..3bb2121
--- /dev/null
+++ b/src/testdata/repetition.dat
@@ -0,0 +1,163 @@
+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