NOTE null subexpression matches : 2002-06-06 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)(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 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 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 ([^ab]*)* ccccxx (0,6)(0,6) E SAME ababab (0,0)(0,0) 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) 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) |