diff --git a/src/testdir/test64.in b/src/testdir/test64.in
index 6faf2db..6e227e8 100644
--- a/src/testdir/test64.in
+++ b/src/testdir/test64.in
@@ -20,328 +20,344 @@
 :"""" Previously written tests """"""""""""""""""""""""""""""""
 :""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 
-:call add(tl, ['ab', 'aab', 'ab'])
-:call add(tl, ['b', 'abcdef', 'b'])
-:call add(tl, ['bc*', 'abccccdef', 'bcccc'])
-:call add(tl, ['bc\{-}', 'abccccdef', 'b'])
-:call add(tl, ['bc\{-}\(d\)', 'abccccdef', 'bccccd', 'd'])
-:call add(tl, ['bc*', 'abbdef', 'b'])
-:call add(tl, ['c*', 'ccc', 'ccc'])
-:call add(tl, ['bc*', 'abdef', 'b'])
-:call add(tl, ['c*', 'abdef', ''])
-:call add(tl, ['bc\+', 'abccccdef', 'bcccc'])
-:call add(tl, ['bc\+', 'abdef']) "no match
+:call add(tl, [2, 'ab', 'aab', 'ab'])
+:call add(tl, [2, 'b', 'abcdef', 'b'])
+:call add(tl, [2, 'bc*', 'abccccdef', 'bcccc'])
+:call add(tl, [0, 'bc\{-}', 'abccccdef', 'b'])
+:call add(tl, [0, 'bc\{-}\(d\)', 'abccccdef', 'bccccd', 'd'])
+:call add(tl, [2, 'bc*', 'abbdef', 'b'])
+:call add(tl, [2, 'c*', 'ccc', 'ccc'])
+:call add(tl, [2, 'bc*', 'abdef', 'b'])
+:call add(tl, [2, 'c*', 'abdef', ''])
+:call add(tl, [2, 'bc\+', 'abccccdef', 'bcccc'])
+:call add(tl, [2, 'bc\+', 'abdef']) "no match
 :"
 :"operator \|
-:call add(tl, ['a\|ab', 'cabd', 'a']) "alternation is ordered
+:call add(tl, [2, 'a\|ab', 'cabd', 'a']) "alternation is ordered
 :"
-:call add(tl, ['c\?', 'ccb', 'c'])
-:call add(tl, ['bc\?', 'abd', 'b'])
-:call add(tl, ['bc\?', 'abccd', 'bc'])
+:call add(tl, [2, 'c\?', 'ccb', 'c'])
+:call add(tl, [2, 'bc\?', 'abd', 'b'])
+:call add(tl, [2, 'bc\?', 'abccd', 'bc'])
 :"
-:call add(tl, ['\va{1}', 'ab', 'a'])
+:call add(tl, [2, '\va{1}', 'ab', 'a'])
 :"
-:call add(tl, ['\va{2}', 'aa', 'aa'])
-:call add(tl, ['\va{2}', 'caad', 'aa'])
-:call add(tl, ['\va{2}', 'aba'])
-:call add(tl, ['\va{2}', 'ab'])
-:call add(tl, ['\va{2}', 'abaa', 'aa'])
-:call add(tl, ['\va{2}', 'aaa', 'aa'])
+:call add(tl, [2, '\va{2}', 'aa', 'aa'])
+:call add(tl, [2, '\va{2}', 'caad', 'aa'])
+:call add(tl, [2, '\va{2}', 'aba'])
+:call add(tl, [2, '\va{2}', 'ab'])
+:call add(tl, [2, '\va{2}', 'abaa', 'aa'])
+:call add(tl, [2, '\va{2}', 'aaa', 'aa'])
 :"
-:call add(tl, ['\vb{1}', 'abca', 'b'])
-:call add(tl, ['\vba{2}', 'abaa', 'baa'])
-:call add(tl, ['\vba{3}', 'aabaac'])
+:call add(tl, [2, '\vb{1}', 'abca', 'b'])
+:call add(tl, [2, '\vba{2}', 'abaa', 'baa'])
+:call add(tl, [2, '\vba{3}', 'aabaac'])
 :"
-:call add(tl, ['\v(ab){1}', 'ab', 'ab', 'ab'])
-:call add(tl, ['\v(ab){1}', 'dabc', 'ab', 'ab'])
-:call add(tl, ['\v(ab){1}', 'acb'])
+:call add(tl, [2, '\v(ab){1}', 'ab', 'ab', 'ab'])
+:call add(tl, [2, '\v(ab){1}', 'dabc', 'ab', 'ab'])
+:call add(tl, [2, '\v(ab){1}', 'acb'])
 :"
-:call add(tl, ['\v(ab){0,2}', 'acb', "", ""])
-:call add(tl, ['\v(ab){0,2}', 'ab', 'ab', 'ab'])
-:call add(tl, ['\v(ab){1,2}', 'ab', 'ab', 'ab'])
-:call add(tl, ['\v(ab){1,2}', 'ababc', 'abab', 'ab'])
-:call add(tl, ['\v(ab){2,4}', 'ababcab', 'abab', 'ab'])
-:call add(tl, ['\v(ab){2,4}', 'abcababa', 'abab', 'ab'])
+:call add(tl, [2, '\v(ab){0,2}', 'acb', "", ""])
+:call add(tl, [2, '\v(ab){0,2}', 'ab', 'ab', 'ab'])
+:call add(tl, [2, '\v(ab){1,2}', 'ab', 'ab', 'ab'])
+:call add(tl, [2, '\v(ab){1,2}', 'ababc', 'abab', 'ab'])
+:call add(tl, [2, '\v(ab){2,4}', 'ababcab', 'abab', 'ab'])
+:call add(tl, [2, '\v(ab){2,4}', 'abcababa', 'abab', 'ab'])
 :"
-:call add(tl, ['\v(ab){2}', 'abab', 'abab', 'ab'])
-:call add(tl, ['\v(ab){2}', 'cdababe', 'abab', 'ab'])
-:call add(tl, ['\v(ab){2}', 'abac'])
-:call add(tl, ['\v(ab){2}', 'abacabab', 'abab', 'ab'])
-:call add(tl, ['\v((ab){2}){2}', 'abababab', 'abababab', 'abab', 'ab'])
-:call add(tl, ['\v((ab){2}){2}', 'abacabababab', 'abababab', 'abab', 'ab'])
+:call add(tl, [2, '\v(ab){2}', 'abab', 'abab', 'ab'])
+:call add(tl, [2, '\v(ab){2}', 'cdababe', 'abab', 'ab'])
+:call add(tl, [2, '\v(ab){2}', 'abac'])
+:call add(tl, [2, '\v(ab){2}', 'abacabab', 'abab', 'ab'])
+:call add(tl, [2, '\v((ab){2}){2}', 'abababab', 'abababab', 'abab', 'ab'])
+:call add(tl, [2, '\v((ab){2}){2}', 'abacabababab', 'abababab', 'abab', 'ab'])
 :"
-:call add(tl, ['\v(a{1}){1}', 'a', 'a', 'a'])
-:call add(tl, ['\v(a{2}){1}', 'aa', 'aa', 'aa'])
-:call add(tl, ['\v(a{2}){1}', 'aaac', 'aa', 'aa'])
-:call add(tl, ['\v(a{2}){1}', 'daaac', 'aa', 'aa'])
-:call add(tl, ['\v(a{1}){2}', 'daaac', 'aa', 'a'])
-:call add(tl, ['\v(a{1}){2}', 'aaa', 'aa', 'a'])
-:call add(tl, ['\v(a{2})+', 'adaac', 'aa', 'aa'])
-:call add(tl, ['\v(a{2})+', 'aa', 'aa', 'aa'])
-:call add(tl, ['\v(a{2}){1}', 'aa', 'aa', 'aa'])
-:call add(tl, ['\v(a{1}){2}', 'aa', 'aa', 'a'])
-:call add(tl, ['\v(a{1}){1}', 'a', 'a', 'a'])
-:call add(tl, ['\v(a{2}){2}', 'aaaa', 'aaaa', 'aa'])
-:call add(tl, ['\v(a{2}){2}', 'aaabaaaa', 'aaaa', 'aa'])
+:call add(tl, [2, '\v(a{1}){1}', 'a', 'a', 'a'])
+:call add(tl, [2, '\v(a{2}){1}', 'aa', 'aa', 'aa'])
+:call add(tl, [2, '\v(a{2}){1}', 'aaac', 'aa', 'aa'])
+:call add(tl, [2, '\v(a{2}){1}', 'daaac', 'aa', 'aa'])
+:call add(tl, [2, '\v(a{1}){2}', 'daaac', 'aa', 'a'])
+:call add(tl, [2, '\v(a{1}){2}', 'aaa', 'aa', 'a'])
+:call add(tl, [2, '\v(a{2})+', 'adaac', 'aa', 'aa'])
+:call add(tl, [2, '\v(a{2})+', 'aa', 'aa', 'aa'])
+:call add(tl, [2, '\v(a{2}){1}', 'aa', 'aa', 'aa'])
+:call add(tl, [2, '\v(a{1}){2}', 'aa', 'aa', 'a'])
+:call add(tl, [2, '\v(a{1}){1}', 'a', 'a', 'a'])
+:call add(tl, [2, '\v(a{2}){2}', 'aaaa', 'aaaa', 'aa'])
+:call add(tl, [2, '\v(a{2}){2}', 'aaabaaaa', 'aaaa', 'aa'])
 :"
-:call add(tl, ['\v(a+){2}', 'dadaac', 'aa', 'a'])
-:call add(tl, ['\v(a{3}){2}', 'aaaaaaa', 'aaaaaa', 'aaa'])
+:call add(tl, [2, '\v(a+){2}', 'dadaac', 'aa', 'a'])
+:call add(tl, [2, '\v(a{3}){2}', 'aaaaaaa', 'aaaaaa', 'aaa'])
 :"
-:call add(tl, ['\v(a{1,2}){2}', 'daaac', 'aaa', 'a'])
-:call add(tl, ['\v(a{1,3}){2}', 'daaaac', 'aaaa', 'a'])
-:call add(tl, ['\v(a{1,3}){2}', 'daaaaac', 'aaaaa', 'aa'])
-:call add(tl, ['\v(a{1,3}){3}', 'daac'])
-:call add(tl, ['\v(a{1,2}){2}', 'dac'])
-:call add(tl, ['\v(a+)+', 'daac', 'aa', 'aa'])
-:call add(tl, ['\v(a+)+', 'aaa', 'aaa', 'aaa'])
-:call add(tl, ['\v(a+){1,2}', 'aaa', 'aaa', 'aaa'])
-:call add(tl, ['\v(a+)(a+)', 'aaa', 'aaa', 'aa', 'a'])
-:call add(tl, ['\v(a{3})+', 'daaaac', 'aaa', 'aaa'])
-:call add(tl, ['\v(a|b|c)+', 'aacb', 'aacb', 'b'])
-:call add(tl, ['\v(a|b|c){2}', 'abcb', 'ab', 'b'])
-:call add(tl, ['\v(abc){2}', 'abcabd', ])
-:call add(tl, ['\v(abc){2}', 'abdabcabc','abcabc', 'abc'])
+:call add(tl, [2, '\v(a{1,2}){2}', 'daaac', 'aaa', 'a'])
+:call add(tl, [2, '\v(a{1,3}){2}', 'daaaac', 'aaaa', 'a'])
+:call add(tl, [2, '\v(a{1,3}){2}', 'daaaaac', 'aaaaa', 'aa'])
+:call add(tl, [2, '\v(a{1,3}){3}', 'daac'])
+:call add(tl, [2, '\v(a{1,2}){2}', 'dac'])
+:call add(tl, [2, '\v(a+)+', 'daac', 'aa', 'aa'])
+:call add(tl, [2, '\v(a+)+', 'aaa', 'aaa', 'aaa'])
+:call add(tl, [2, '\v(a+){1,2}', 'aaa', 'aaa', 'aaa'])
+:call add(tl, [2, '\v(a+)(a+)', 'aaa', 'aaa', 'aa', 'a'])
+:call add(tl, [2, '\v(a{3})+', 'daaaac', 'aaa', 'aaa'])
+:call add(tl, [2, '\v(a|b|c)+', 'aacb', 'aacb', 'b'])
+:call add(tl, [2, '\v(a|b|c){2}', 'abcb', 'ab', 'b'])
+:call add(tl, [2, '\v(abc){2}', 'abcabd', ])
+:call add(tl, [2, '\v(abc){2}', 'abdabcabc','abcabc', 'abc'])
 :"
-:call add(tl, ['a*', 'cc', ''])
-:call add(tl, ['\v(a*)+', 'cc', ''])
-:call add(tl, ['\v((ab)+)+', 'ab', 'ab', 'ab', 'ab'])
-:call add(tl, ['\v(((ab)+)+)+', 'ab', 'ab', 'ab', 'ab', 'ab'])
-:call add(tl, ['\v(((ab)+)+)+', 'dababc', 'abab', 'abab', 'abab', 'ab'])
-:call add(tl, ['\v(a{0,2})+', 'cc', ''])
-:call add(tl, ['\v(a*)+', '', ''])
-:call add(tl, ['\v((a*)+)+', '', ''])
-:call add(tl, ['\v((ab)*)+', '', ''])
-:call add(tl, ['\va{1,3}', 'aab', 'aa'])
-:call add(tl, ['\va{2,3}', 'abaa', 'aa'])
+:call add(tl, [2, 'a*', 'cc', ''])
+:call add(tl, [2, '\v(a*)+', 'cc', ''])
+:call add(tl, [2, '\v((ab)+)+', 'ab', 'ab', 'ab', 'ab'])
+:call add(tl, [2, '\v(((ab)+)+)+', 'ab', 'ab', 'ab', 'ab', 'ab'])
+:call add(tl, [2, '\v(((ab)+)+)+', 'dababc', 'abab', 'abab', 'abab', 'ab'])
+:call add(tl, [2, '\v(a{0,2})+', 'cc', ''])
+:call add(tl, [2, '\v(a*)+', '', ''])
+:call add(tl, [2, '\v((a*)+)+', '', ''])
+:call add(tl, [2, '\v((ab)*)+', '', ''])
+:call add(tl, [2, '\va{1,3}', 'aab', 'aa'])
+:call add(tl, [2, '\va{2,3}', 'abaa', 'aa'])
 :"
-:call add(tl, ['\v((ab)+|c*)+', 'abcccaba', 'abcccab', '', 'ab'])
-:call add(tl, ['\v(a{2})|(b{3})', 'bbabbbb', 'bbb', '', 'bbb'])
-:call add(tl, ['\va{2}|b{2}', 'abab'])
-:call add(tl, ['\v(a)+|(c)+', 'bbacbaacbbb', 'a', 'a'])
-:call add(tl, ['\vab{2,3}c', 'aabbccccccccccccc', 'abbc'])
-:call add(tl, ['\vab{2,3}c', 'aabbbccccccccccccc', 'abbbc'])
-:call add(tl, ['\vab{2,3}cd{2,3}e', 'aabbbcddee', 'abbbcdde'])
-:call add(tl, ['\va(bc){2}d', 'aabcbfbc' ])
-:call add(tl, ['\va*a{2}', 'a', ])
-:call add(tl, ['\va*a{2}', 'aa', 'aa' ])
-:call add(tl, ['\va*a{2}', 'aaa', 'aaa' ])
-:call add(tl, ['\va*a{2}', 'bbbabcc', ])
-:call add(tl, ['\va*b*|a*c*', 'a', 'a'])
-:call add(tl, ['\va{1}b{1}|a{1}b{1}', ''])
+:call add(tl, [2, '\v((ab)+|c*)+', 'abcccaba', 'abcccab', '', 'ab'])
+:call add(tl, [2, '\v(a{2})|(b{3})', 'bbabbbb', 'bbb', '', 'bbb'])
+:call add(tl, [2, '\va{2}|b{2}', 'abab'])
+:call add(tl, [2, '\v(a)+|(c)+', 'bbacbaacbbb', 'a', 'a'])
+:call add(tl, [2, '\vab{2,3}c', 'aabbccccccccccccc', 'abbc'])
+:call add(tl, [2, '\vab{2,3}c', 'aabbbccccccccccccc', 'abbbc'])
+:call add(tl, [2, '\vab{2,3}cd{2,3}e', 'aabbbcddee', 'abbbcdde'])
+:call add(tl, [2, '\va(bc){2}d', 'aabcbfbc' ])
+:call add(tl, [2, '\va*a{2}', 'a', ])
+:call add(tl, [2, '\va*a{2}', 'aa', 'aa' ])
+:call add(tl, [2, '\va*a{2}', 'aaa', 'aaa' ])
+:call add(tl, [2, '\va*a{2}', 'bbbabcc', ])
+:call add(tl, [2, '\va*b*|a*c*', 'a', 'a'])
+:call add(tl, [2, '\va{1}b{1}|a{1}b{1}', ''])
 :"
 :"submatches
-:call add(tl, ['\v(a)', 'ab', 'a', 'a'])
-:call add(tl, ['\v(a)(b)', 'ab', 'ab', 'a', 'b'])
-:call add(tl, ['\v(ab)(b)(c)', 'abbc', 'abbc', 'ab', 'b', 'c'])
-:call add(tl, ['\v((a)(b))', 'ab', 'ab', 'ab', 'a', 'b'])
-:call add(tl, ['\v(a)|(b)', 'ab', 'a', 'a'])
+:call add(tl, [2, '\v(a)', 'ab', 'a', 'a'])
+:call add(tl, [2, '\v(a)(b)', 'ab', 'ab', 'a', 'b'])
+:call add(tl, [2, '\v(ab)(b)(c)', 'abbc', 'abbc', 'ab', 'b', 'c'])
+:call add(tl, [2, '\v((a)(b))', 'ab', 'ab', 'ab', 'a', 'b'])
+:call add(tl, [2, '\v(a)|(b)', 'ab', 'a', 'a'])
 :"
-:call add(tl, ['\v(a*)+', 'aaaa', 'aaaa', ''])
-:call add(tl, ['x', 'abcdef'])
+:call add(tl, [2, '\v(a*)+', 'aaaa', 'aaaa', ''])
+:call add(tl, [2, 'x', 'abcdef'])
 
 :""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 :""""" Simple tests """""""""""""""""""""""""""""""""""""""""""
 :""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 
 :" Search single groups
-:call add(tl, ['ab', 'aab', 'ab'])
-:call add(tl, ['ab', 'baced'])
-:call add(tl, ['ab', '                    ab           ', 'ab'])
+:call add(tl, [2, 'ab', 'aab', 'ab'])
+:call add(tl, [2, 'ab', 'baced'])
+:call add(tl, [2, 'ab', '                    ab           ', 'ab'])
 
 :" Search multi-modifiers
-:call add(tl, ['x*', 'xcd', 'x'])
-:call add(tl, ['x*', 'xxxxxxxxxxxxxxxxsofijiojgf', 'xxxxxxxxxxxxxxxx'])
-:call add(tl, ['x*', 'abcdoij', ''])                    " empty match is good
-:call add(tl, ['x\+', 'abcdoin'])                       " no match here
-:call add(tl, ['x\+', 'abcdeoijdfxxiuhfij', 'xx'])
-:call add(tl, ['x\+', 'xxxxx', 'xxxxx'])
-:call add(tl, ['x\+', 'abc x siufhiush xxxxxxxxx', 'x'])
-:call add(tl, ['x\=', 'x sdfoij', 'x'])
-:call add(tl, ['x\=', 'abc sfoij', '']) " empty match is good
-:call add(tl, ['x\=', 'xxxxxxxxx c', 'x'])
-:call add(tl, ['x\?', 'x sdfoij', 'x'])
-:call add(tl, ['x\?', 'abc sfoij', ''])                 " empty match is good
-:call add(tl, ['x\?', 'xxxxxxxxxx c', 'x'])
+:call add(tl, [2, 'x*', 'xcd', 'x'])
+:call add(tl, [2, 'x*', 'xxxxxxxxxxxxxxxxsofijiojgf', 'xxxxxxxxxxxxxxxx'])
+:call add(tl, [2, 'x*', 'abcdoij', ''])                    " empty match is good
+:call add(tl, [2, 'x\+', 'abcdoin'])                       " no match here
+:call add(tl, [2, 'x\+', 'abcdeoijdfxxiuhfij', 'xx'])
+:call add(tl, [2, 'x\+', 'xxxxx', 'xxxxx'])
+:call add(tl, [2, 'x\+', 'abc x siufhiush xxxxxxxxx', 'x'])
+:call add(tl, [2, 'x\=', 'x sdfoij', 'x'])
+:call add(tl, [2, 'x\=', 'abc sfoij', '']) " empty match is good
+:call add(tl, [2, 'x\=', 'xxxxxxxxx c', 'x'])
+:call add(tl, [2, 'x\?', 'x sdfoij', 'x'])
+:call add(tl, [2, 'x\?', 'abc sfoij', ''])                 " empty match is good
+:call add(tl, [2, 'x\?', 'xxxxxxxxxx c', 'x'])
 
-:call add(tl, ['a\{0,0}', 'abcdfdoij', ''])
-:call add(tl, ['a\{0,1}', 'asiubid axxxaaa', 'a'])      " same thing as 'a?'
-:call add(tl, ['a\{1,0}', 'asiubid axxxaaa', 'a'])      " same thing as 'a\{0,1}'
-:call add(tl, ['a\{3,6}', 'aa siofuh'])
-:call add(tl, ['a\{3,6}', 'aaaaa asfoij afaa', 'aaaaa'])
-:call add(tl, ['a\{3,6}', 'aaaaaaaa', 'aaaaaa'])
-:call add(tl, ['a\{0}', 'asoiuj', ''])
-:call add(tl, ['a\{2}', 'aaaa', 'aa'])
-:call add(tl, ['a\{2}', 'iuash fiusahfliusah fiushfilushfi uhsaifuh askfj nasfvius afg aaaa sfiuhuhiushf', 'aa'])
-:call add(tl, ['a\{2}', 'abcdefghijklmnopqrestuvwxyz1234567890'])
-:call add(tl, ['a\{0,}', 'oij sdigfusnf', ''])          " same thing as 'a*'
-:call add(tl, ['a\{0,}', 'aaaaa aa', 'aaaaa'])
-:call add(tl, ['a\{2,}', 'sdfiougjdsafg'])
-:call add(tl, ['a\{2,}', 'aaaaasfoij ', 'aaaaa'])
-:call add(tl, ['a\{,0}', 'oidfguih iuhi hiu aaaa', ''])
-:call add(tl, ['a\{,5}', 'abcd', 'a'])
-:call add(tl, ['a\{,5}', 'aaaaaaaaaa', 'aaaaa'])
-:call add(tl, ['a\{}', 'bbbcddiuhfcd', ''])                 " same thing as 'a*'
-:call add(tl, ['a\{}', 'aaaaioudfh coisf jda', 'aaaa'])
+:call add(tl, [2, 'a\{0,0}', 'abcdfdoij', ''])
+:call add(tl, [2, 'a\{0,1}', 'asiubid axxxaaa', 'a'])      " same thing as 'a?'
+:call add(tl, [2, 'a\{1,0}', 'asiubid axxxaaa', 'a'])      " same thing as 'a\{0,1}'
+:call add(tl, [2, 'a\{3,6}', 'aa siofuh'])
+:call add(tl, [2, 'a\{3,6}', 'aaaaa asfoij afaa', 'aaaaa'])
+:call add(tl, [2, 'a\{3,6}', 'aaaaaaaa', 'aaaaaa'])
+:call add(tl, [2, 'a\{0}', 'asoiuj', ''])
+:call add(tl, [2, 'a\{2}', 'aaaa', 'aa'])
+:call add(tl, [2, 'a\{2}', 'iuash fiusahfliusah fiushfilushfi uhsaifuh askfj nasfvius afg aaaa sfiuhuhiushf', 'aa'])
+:call add(tl, [2, 'a\{2}', 'abcdefghijklmnopqrestuvwxyz1234567890'])
+:call add(tl, [2, 'a\{0,}', 'oij sdigfusnf', ''])          " same thing as 'a*'
+:call add(tl, [2, 'a\{0,}', 'aaaaa aa', 'aaaaa'])
+:call add(tl, [2, 'a\{2,}', 'sdfiougjdsafg'])
+:call add(tl, [0, 'a\{2,}', 'aaaaasfoij ', 'aaaaa'])
+:call add(tl, [2, 'a\{,0}', 'oidfguih iuhi hiu aaaa', ''])
+:call add(tl, [2, 'a\{,5}', 'abcd', 'a'])
+:call add(tl, [2, 'a\{,5}', 'aaaaaaaaaa', 'aaaaa'])
+:call add(tl, [2, 'a\{}', 'bbbcddiuhfcd', ''])                 " same thing as 'a*'
+:call add(tl, [2, 'a\{}', 'aaaaioudfh coisf jda', 'aaaa'])
 
-:call add(tl, ['a\{-0,0}', 'abcdfdoij', ''])
-:call add(tl, ['a\{-0,1}', 'asiubid axxxaaa', ''])      " anti-greedy version of 'a?'
-:call add(tl, ['a\{-3,6}', 'aa siofuh'])
-:call add(tl, ['a\{-3,6}', 'aaaaa asfoij afaa', 'aaa'])
-:call add(tl, ['a\{-3,6}', 'aaaaaaaa', 'aaa'])
-:call add(tl, ['a\{-0}', 'asoiuj', ''])
-:call add(tl, ['a\{-2}', 'aaaa', 'aa'])
-:call add(tl, ['a\{-2}', 'abcdefghijklmnopqrestuvwxyz1234567890'])
-:call add(tl, ['a\{-0,}', 'oij sdigfusnf', ''])
-:call add(tl, ['a\{-0,}', 'aaaaa aa', ''])
-:call add(tl, ['a\{-2,}', 'sdfiougjdsafg'])
-:call add(tl, ['a\{-2,}', 'aaaaasfoij ', 'aa'])
-:call add(tl, ['a\{-,0}', 'oidfguih iuhi hiu aaaa', ''])
-:call add(tl, ['a\{-,5}', 'abcd', ''])
-:call add(tl, ['a\{-,5}', 'aaaaaaaaaa', ''])
-:call add(tl, ['a\{-}', 'bbbcddiuhfcd', ''])            " anti-greedy version of 'a*'
-:call add(tl, ['a\{-}', 'aaaaioudfh coisf jda', ''])
+:call add(tl, [2, 'a\{-0,0}', 'abcdfdoij', ''])
+:call add(tl, [2, 'a\{-0,1}', 'asiubid axxxaaa', ''])      " anti-greedy version of 'a?'
+:call add(tl, [2, 'a\{-3,6}', 'aa siofuh'])
+:call add(tl, [2, 'a\{-3,6}', 'aaaaa asfoij afaa', 'aaa'])
+:call add(tl, [2, 'a\{-3,6}', 'aaaaaaaa', 'aaa'])
+:call add(tl, [2, 'a\{-0}', 'asoiuj', ''])
+:call add(tl, [2, 'a\{-2}', 'aaaa', 'aa'])
+:call add(tl, [2, 'a\{-2}', 'abcdefghijklmnopqrestuvwxyz1234567890'])
+:call add(tl, [0, 'a\{-0,}', 'oij sdigfusnf', ''])
+:call add(tl, [0, 'a\{-0,}', 'aaaaa aa', ''])
+:call add(tl, [2, 'a\{-2,}', 'sdfiougjdsafg'])
+:call add(tl, [0, 'a\{-2,}', 'aaaaasfoij ', 'aa'])
+:call add(tl, [2, 'a\{-,0}', 'oidfguih iuhi hiu aaaa', ''])
+:call add(tl, [2, 'a\{-,5}', 'abcd', ''])
+:call add(tl, [2, 'a\{-,5}', 'aaaaaaaaaa', ''])
+:call add(tl, [0, 'a\{-}', 'bbbcddiuhfcd', ''])            " anti-greedy version of 'a*'
+:call add(tl, [0, 'a\{-}', 'aaaaioudfh coisf jda', ''])
 
 :" Test groups of characters and submatches
-:call add(tl, ['\(abc\)*', 'abcabcabc', 'abcabcabc', 'abc'])
-:call add(tl, ['\(ab\)\+', 'abababaaaaa', 'ababab', 'ab'])
-:call add(tl, ['\(abaaaaa\)*cd', 'cd', 'cd', ''])
-:call add(tl, ['\(test1\)\? \(test2\)\?', 'test1 test3', 'test1 ', 'test1', ''])
-:call add(tl, ['\(test1\)\= \(test2\) \(test4443\)\=', ' test2 test4443 yupiiiiiiiiiii', ' test2 test4443', '', 'test2', 'test4443'])
-:call add(tl, ['\(\(sub1\) hello \(sub 2\)\)', 'asterix sub1 hello sub 2 obelix', 'sub1 hello sub 2', 'sub1 hello sub 2', 'sub1', 'sub 2'])
-:call add(tl, ['\(\(\(yyxxzz\)\)\)', 'abcdddsfiusfyyzzxxyyxxzz', 'yyxxzz', 'yyxxzz', 'yyxxzz', 'yyxxzz'])
-:call add(tl, ['\v((ab)+|c+)+', 'abcccaba', 'abcccab', 'ab', 'ab'])
-:call add(tl, ['\v((ab)|c*)+', 'abcccaba', 'abcccab', '', 'ab'])
-:call add(tl, ['\v(a(c*)+b)+', 'acbababaaa', 'acbabab', 'ab', ''])
-:call add(tl, ['\v(a|b*)+', 'aaaa', 'aaaa', ''])
+:call add(tl, [2, '\(abc\)*', 'abcabcabc', 'abcabcabc', 'abc'])
+:call add(tl, [2, '\(ab\)\+', 'abababaaaaa', 'ababab', 'ab'])
+:call add(tl, [2, '\(abaaaaa\)*cd', 'cd', 'cd', ''])
+:call add(tl, [2, '\(test1\)\? \(test2\)\?', 'test1 test3', 'test1 ', 'test1', ''])
+:call add(tl, [2, '\(test1\)\= \(test2\) \(test4443\)\=', ' test2 test4443 yupiiiiiiiiiii', ' test2 test4443', '', 'test2', 'test4443'])
+:call add(tl, [2, '\(\(sub1\) hello \(sub 2\)\)', 'asterix sub1 hello sub 2 obelix', 'sub1 hello sub 2', 'sub1 hello sub 2', 'sub1', 'sub 2'])
+:call add(tl, [2, '\(\(\(yyxxzz\)\)\)', 'abcdddsfiusfyyzzxxyyxxzz', 'yyxxzz', 'yyxxzz', 'yyxxzz', 'yyxxzz'])
+:call add(tl, [2, '\v((ab)+|c+)+', 'abcccaba', 'abcccab', 'ab', 'ab'])
+:call add(tl, [2, '\v((ab)|c*)+', 'abcccaba', 'abcccab', '', 'ab'])
+:call add(tl, [2, '\v(a(c*)+b)+', 'acbababaaa', 'acbabab', 'ab', ''])
+:call add(tl, [2, '\v(a|b*)+', 'aaaa', 'aaaa', ''])
 
 :" Test greedy-ness and lazy-ness
-:call add(tl, ['a\{-2,7}','aaaaaaaaaaaaa', 'aa'])
-:call add(tl, ['a\{2,7}','aaaaaaaaaaaaaaaaaaaa', 'aaaaaaa'])
-:call add(tl, ['\vx(.{-,8})yz(.*)','xayxayzxayzxayz','xayxayzxayzxayz','ayxa','xayzxayz'])
-:call add(tl, ['\vx(.*)yz(.*)','xayxayzxayzxayz','xayxayzxayzxayz', 'ayxayzxayzxa',''])
-:call add(tl, ['\v(a{1,2}){-2,3}','aaaaaaa','aaaa','aa'])
-:call add(tl, ['\v(a{-1,3})+','aa','aa','a'])
+:call add(tl, [2, 'a\{-2,7}','aaaaaaaaaaaaa', 'aa'])
+:call add(tl, [2, 'a\{2,7}','aaaaaaaaaaaaaaaaaaaa', 'aaaaaaa'])
+:call add(tl, [2, '\vx(.{-,8})yz(.*)','xayxayzxayzxayz','xayxayzxayzxayz','ayxa','xayzxayz'])
+:call add(tl, [2, '\vx(.*)yz(.*)','xayxayzxayzxayz','xayxayzxayzxayz', 'ayxayzxayzxa',''])
+:call add(tl, [2, '\v(a{1,2}){-2,3}','aaaaaaa','aaaa','aa'])
+:call add(tl, [2, '\v(a{-1,3})+','aa','aa','a'])
 
 :" Test Character classes
-:call add(tl, ['\d\+e\d\d','test 10e23 fd','10e23'])
+:call add(tl, [2, '\d\+e\d\d','test 10e23 fd','10e23'])
 
 :" Test collections and character range []
-:call add(tl, ['\v[a]', 'abcd', 'a'])
-:call add(tl, ['a[bcd]', 'abcd', 'ab'])
-:call add(tl, ['a[b-d]', 'acbd', 'ac'])
-:call add(tl, ['[a-d][e-f][x-x]d', 'cexdxx', 'cexd'])
-:call add(tl, ['\v[[:alpha:]]+', 'abcdefghijklmnopqrstuvwxyz6','abcdefghijklmnopqrstuvwxyz'])
-:call add(tl, ['[[:alpha:]\+]', '6x8','x'])
-:call add(tl, ['[^abc]\+','abcabcabc'])
-:call add(tl, ['[^abc]','defghiasijvoinasoiunbvb','d'])
-:call add(tl, ['[^abc]\+','ddddddda','ddddddd'])
-:call add(tl, ['[^a-d]\+','aaaAAAZIHFNCddd','AAAZIHFNC'])
-:call add(tl, ['[a-f]*','iiiiiiii',''])
-:call add(tl, ['[a-f]*','abcdefgh','abcdef'])
-:call add(tl, ['[^a-f]\+','abcdefgh','gh'])
-:call add(tl, ['[a-c]\{-3,6}','abcabc','abc'])
-:call add(tl, ['[^[:alpha:]]\+','abcccadfoij7787ysf287yrnccdu','7787'])
-:call add(tl, ['[-a]', '-', '-'])
-:call add(tl, ['[a-]', '-', '-'])
-:call add(tl, ['[-./[:alnum:]_~]\+', 'log13.file', 'log13.file'])		" filename regexp
-:call add(tl, ['[\]\^\-\\]\+', '\^\\\-\---^', '\^\\\-\---^'])			" special chars
-:call add(tl, ['[[.a.]]\+', 'aa', 'aa'])								" collation elem
-:call add(tl, ['abc[0-9]*ddd', 'siuhabc ii'])							" middle of regexp
-:call add(tl, ['abc[0-9]*ddd', 'adf abc44482ddd oijs', 'abc44482ddd'])
-:call add(tl, ['\_[0-9]\+', 'asfi9888u', '9888'])
-:call add(tl, ['[0-9\n]\+', 'asfi9888u', '9888'])
+:call add(tl, [2, '\v[a]', 'abcd', 'a'])
+:call add(tl, [2, 'a[bcd]', 'abcd', 'ab'])
+:call add(tl, [2, 'a[b-d]', 'acbd', 'ac'])
+:call add(tl, [2, '[a-d][e-f][x-x]d', 'cexdxx', 'cexd'])
+:call add(tl, [2, '\v[[:alpha:]]+', 'abcdefghijklmnopqrstuvwxyz6','abcdefghijklmnopqrstuvwxyz'])
+:call add(tl, [2, '[[:alpha:]\+]', '6x8','x'])
+:call add(tl, [2, '[^abc]\+','abcabcabc'])
+:call add(tl, [2, '[^abc]','defghiasijvoinasoiunbvb','d'])
+:call add(tl, [2, '[^abc]\+','ddddddda','ddddddd'])
+:call add(tl, [2, '[^a-d]\+','aaaAAAZIHFNCddd','AAAZIHFNC'])
+:call add(tl, [2, '[a-f]*','iiiiiiii',''])
+:call add(tl, [2, '[a-f]*','abcdefgh','abcdef'])
+:call add(tl, [2, '[^a-f]\+','abcdefgh','gh'])
+:call add(tl, [2, '[a-c]\{-3,6}','abcabc','abc'])
+:call add(tl, [2, '[^[:alpha:]]\+','abcccadfoij7787ysf287yrnccdu','7787'])
+:call add(tl, [2, '[-a]', '-', '-'])
+:call add(tl, [2, '[a-]', '-', '-'])
+:call add(tl, [2, '[-./[:alnum:]_~]\+', 'log13.file', 'log13.file'])		" filename regexp
+:call add(tl, [2, '[\]\^\-\\]\+', '\^\\\-\---^', '\^\\\-\---^'])			" special chars
+:call add(tl, [2, '[[.a.]]\+', 'aa', 'aa'])								" collation elem
+:call add(tl, [2, 'abc[0-9]*ddd', 'siuhabc ii'])							" middle of regexp
+:call add(tl, [2, 'abc[0-9]*ddd', 'adf abc44482ddd oijs', 'abc44482ddd'])
+:call add(tl, [2, '\_[0-9]\+', 'asfi9888u', '9888'])
+:call add(tl, [2, '[0-9\n]\+', 'asfi9888u', '9888'])
 
 
 :"""" Test recognition of some character classes
-:call add(tl, ['[0-9]', '8', '8'])
-:call add(tl, ['[^0-9]', '8'])
-:call add(tl, ['[0-9a-fA-F]*', '0a7', '0a7'])
-:call add(tl, ['[^0-9A-Fa-f]\+', '0a7'])
-:call add(tl, ['[a-z_A-Z0-9]\+', 'aso_sfoij', 'aso_sfoij'])
-:call add(tl, ['[a-z]', 'a', 'a'])
-:call add(tl, ['[a-zA-Z]', 'a', 'a'])
-:call add(tl, ['[A-Z]', 'a'])
-:call add(tl, ['\C[^A-Z]\+', 'ABCOIJDEOIFNSD jsfoij sa', ' jsfoij sa'])
+:call add(tl, [2, '[0-9]', '8', '8'])
+:call add(tl, [2, '[^0-9]', '8'])
+:call add(tl, [2, '[0-9a-fA-F]*', '0a7', '0a7'])
+:call add(tl, [2, '[^0-9A-Fa-f]\+', '0a7'])
+:call add(tl, [2, '[a-z_A-Z0-9]\+', 'aso_sfoij', 'aso_sfoij'])
+:call add(tl, [2, '[a-z]', 'a', 'a'])
+:call add(tl, [2, '[a-zA-Z]', 'a', 'a'])
+:call add(tl, [2, '[A-Z]', 'a'])
+:call add(tl, [2, '\C[^A-Z]\+', 'ABCOIJDEOIFNSD jsfoij sa', ' jsfoij sa'])
 
 :"""" Tests for \z features
-:call add(tl, ['xx \ze test', 'xx '])					" must match after \ze
-:call add(tl, ['abc\zeend', 'oij abcend', 'abc'])
-:call add(tl, ['abc\zsdd', 'ddabcddxyzt', 'dd'])
-:call add(tl, ['aa \zsax', ' ax'])						" must match before \zs
-:call add(tl, ['abc \zsmatch\ze abc', 'abc abc abc match abc abc', 'match'])
-:call add(tl, ['\v(a \zsif .*){2}', 'a if then a if last', 'if last', 'a if last'])
-:call add(tl, ['\>\zs.', 'aword. ', '.'])
+:call add(tl, [2, 'xx \ze test', 'xx '])					" must match after \ze
+:call add(tl, [0, 'abc\zeend', 'oij abcend', 'abc'])
+:call add(tl, [2, 'abc\zsdd', 'ddabcddxyzt', 'dd'])
+:call add(tl, [2, 'aa \zsax', ' ax'])						" must match before \zs
+:call add(tl, [0, 'abc \zsmatch\ze abc', 'abc abc abc match abc abc', 'match'])
+:call add(tl, [2, '\v(a \zsif .*){2}', 'a if then a if last', 'if last', 'a if last'])
+:call add(tl, [2, '\>\zs.', 'aword. ', '.'])
 
 :"""" Tests for \@ features
-:call add(tl, ['abc\@=', 'abc', 'ab'])
-:call add(tl, ['abc\@=cd', 'abcd', 'abcd'])
-:call add(tl, ['abc\@=', 'ababc', 'ab'])
-:call add(tl, ['abcd\@=e', 'abcd'])                     " will never match, no matter the input text
-:call add(tl, ['abcd\@=e', 'any text in here ... '])    " will never match
-:call add(tl, ['\v(abc)@=..', 'xabcd', 'ab', 'abc'])
-:call add(tl, ['\(.*John\)\@=.*Bob', 'here is John, and here is B'])	" no match
-:call add(tl, ['\(John.*\)\@=.*Bob', 'John is Bobs friend', 'John is Bob', 'John is Bobs friend'])
-:call add(tl, ['.*John\&.*Bob', 'here is John, and here is B'])	" no match
-:call add(tl, ['.*John\&.*Bob', 'John is Bobs friend', 'John is Bob'])
-:call add(tl, ['\v(test1)@=.*yep', 'this is a test1, yep it is', 'test1, yep', 'test1'])
+:call add(tl, [0, 'abc\@=', 'abc', 'ab'])
+:call add(tl, [0, 'abc\@=cd', 'abcd', 'abcd'])
+:call add(tl, [0, 'abc\@=', 'ababc', 'ab'])
+:call add(tl, [2, 'abcd\@=e', 'abcd'])                     " will never match, no matter the input text
+:call add(tl, [2, 'abcd\@=e', 'any text in here ... '])    " will never match
+:call add(tl, [0, '\v(abc)@=..', 'xabcd', 'ab', 'abc'])
+:call add(tl, [2, '\(.*John\)\@=.*Bob', 'here is John, and here is B'])	" no match
+:call add(tl, [0, '\(John.*\)\@=.*Bob', 'John is Bobs friend', 'John is Bob', 'John is Bobs friend'])
+:call add(tl, [2, '.*John\&.*Bob', 'here is John, and here is B'])	" no match
+:call add(tl, [0, '.*John\&.*Bob', 'John is Bobs friend', 'John is Bob'])
+:call add(tl, [0, '\v(test1)@=.*yep', 'this is a test1, yep it is', 'test1, yep', 'test1'])
 
 :"""" Combining different tests and features
-:call add(tl, ['[[:alpha:]]\{-2,6}', '787abcdiuhsasiuhb4', 'ab'])
-:call add(tl, ['', 'abcd', ''])
-:call add(tl, ['\v(())', 'any possible text', ''])
-:call add(tl, ['\v%(ab(xyz)c)', '   abxyzc ', 'abxyzc', 'xyz'])
-:call add(tl, ['\v(test|)empty', 'tesempty', 'empty', ''])
-:call add(tl, ['\v(a|aa)(a|aa)', 'aaa', 'aa', 'a', 'a'])
+:call add(tl, [2, '[[:alpha:]]\{-2,6}', '787abcdiuhsasiuhb4', 'ab'])
+:call add(tl, [2, '', 'abcd', ''])
+:call add(tl, [2, '\v(())', 'any possible text', ''])
+:call add(tl, [2, '\v%(ab(xyz)c)', '   abxyzc ', 'abxyzc', 'xyz'])
+:call add(tl, [2, '\v(test|)empty', 'tesempty', 'empty', ''])
+:call add(tl, [2, '\v(a|aa)(a|aa)', 'aaa', 'aa', 'a', 'a'])
 
 :"""" \%u and friends
-:call add(tl, ['\%d32', 'yes no', ' '])
-:call add(tl, ['\%o40', 'yes no', ' '])
-:call add(tl, ['\%x20', 'yes no', ' '])
-:call add(tl, ['\%u0020', 'yes no', ' '])
-:call add(tl, ['\%U00000020', 'yes no', ' '])
+:call add(tl, [2, '\%d32', 'yes no', ' '])
+:call add(tl, [2, '\%o40', 'yes no', ' '])
+:call add(tl, [2, '\%x20', 'yes no', ' '])
+:call add(tl, [2, '\%u0020', 'yes no', ' '])
+:call add(tl, [2, '\%U00000020', 'yes no', ' '])
 
 :"""" Alternatives, must use first longest match
-:call add(tl, ['goo\|go', 'google', 'goo'])
-:call add(tl, ['\<goo\|\<go', 'google', 'goo'])
-:call add(tl, ['\<goo\|go', 'google', 'goo'])
+:call add(tl, [2, 'goo\|go', 'google', 'goo'])
+:call add(tl, [2, '\<goo\|\<go', 'google', 'goo'])
+:call add(tl, [2, '\<goo\|go', 'google', 'goo'])
 
 
 :"""" Run the tests
 
 :"
 :for t in tl
-:  let l = matchlist(t[1], t[0])
+:  let re = t[0]
+:  let pat = t[1]
+:  let text = t[2]
+:  let matchidx = 3
+:  for engine in [0, 1, 2]
+:    if engine == 2 && !re
+:      continue
+:    endif
+:    let &regexpengine = engine
+:    let l = matchlist(text, pat)
 :" check the match itself
-:  if len(l) == 0 && len(t) > 2
-:    $put ='ERROR: pat: \"' . t[0] . '\", text: \"' . t[1] . '\", did not match, expected: \"' . t[2] . '\"'
-:  elseif len(l) > 0 && len(t) == 2
-:    $put ='ERROR: pat: \"' . t[0] . '\", text: \"' . t[1] . '\", match: \"' . l[0] . '\", expected no match'
-:  elseif len(t) > 2 && l[0] != t[2]
-:    $put ='ERROR: pat: \"' . t[0] . '\", text: \"' . t[1] . '\", match: \"' . l[0] . '\", expected: \"' . t[2] . '\"'
-:  else
-:    $put ='OK - ' . t[0]
-:  endif
-:  if len(l) > 0
+:    if len(l) == 0 && len(t) > matchidx
+:      $put ='ERROR: pat: \"' . pat . '\", text: \"' . text . '\", did not match, expected: \"' . t[matchidx] . '\"'
+:    elseif len(l) > 0 && len(t) == matchidx
+:      $put ='ERROR: pat: \"' . pat . '\", text: \"' . text . '\", match: \"' . l[0] . '\", expected no match'
+:    elseif len(t) > matchidx && l[0] != t[matchidx]
+:      $put ='ERROR: pat: \"' . pat . '\", text: \"' . text . '\", match: \"' . l[0] . '\", expected: \"' . t[matchidx] . '\"'
+:    else
+:      $put ='OK ' . engine . ' - ' . pat
+:    endif
+:    if len(l) > 0
 :"   check all the nine submatches
-:    for i in range(1, 9)
-:      if len(t) <= i + 2
-:        let e = ''
-:      else
-:        let e = t[i + 2]
-:      endif
-:      if l[i] != e
-:        $put ='ERROR: pat: \"' . t[0] . '\", text: \"' . t[1] . '\", submatch ' . i . ': \"' . l[i] . '\", expected: \"' . e . '\"'
-:      endif
-:    endfor
-:    unlet i
-:  endif
+:      for i in range(1, 9)
+:        if len(t) <= matchidx + i
+:          let e = ''
+:        else
+:          let e = t[matchidx + i]
+:        endif
+:        if l[i] != e
+:          $put ='ERROR: pat: \"' . pat . '\", text: \"' . text . '\", submatch ' . i . ': \"' . l[i] . '\", expected: \"' . e . '\"'
+:        endif
+:      endfor
+:      unlet i
+:    endif
+:  endfor
 :endfor
 :unlet t tl e l
 
 :" Check that \_[0-9] matching EOL does not break a following \>
 :" This only works on a buffer line, not with expression evaluation
 /^Find this
-/\<\(\(25\_[0-5]\|2\_[0-4]\_[0-9]\|\_[01]\?\_[0-9]\_[0-9]\?\)\.\)\{3\}\(25\_[0-5]\|2\_[0-4]\_[0-9]\|\_[01]\?\_[0-9]\_[0-9]\?\)\>
+/\%#=0\<\(\(25\_[0-5]\|2\_[0-4]\_[0-9]\|\_[01]\?\_[0-9]\_[0-9]\?\)\.\)\{3\}\(25\_[0-5]\|2\_[0-4]\_[0-9]\|\_[01]\?\_[0-9]\_[0-9]\?\)\>
+y$Gop:"
+/^Find this
+/\%#=1\<\(\(25\_[0-5]\|2\_[0-4]\_[0-9]\|\_[01]\?\_[0-9]\_[0-9]\?\)\.\)\{3\}\(25\_[0-5]\|2\_[0-4]\_[0-9]\|\_[01]\?\_[0-9]\_[0-9]\?\)\>
+y$Gop:"
+/^Find this
+/\%#=2\<\(\(25\_[0-5]\|2\_[0-4]\_[0-9]\|\_[01]\?\_[0-9]\_[0-9]\?\)\.\)\{3\}\(25\_[0-5]\|2\_[0-4]\_[0-9]\|\_[01]\?\_[0-9]\_[0-9]\?\)\>
 y$Gop:"
 
 :/\%#=1^Results/,$wq! test.out
diff --git a/src/testdir/test64.ok b/src/testdir/test64.ok
index 3fb8268..8bfaabd 100644
--- a/src/testdir/test64.ok
+++ b/src/testdir/test64.ok
@@ -1,238 +1,695 @@
 Results of test64:
-OK - ab
-OK - b
-OK - bc*
-OK - bc\{-}
-OK - bc\{-}\(d\)
-OK - bc*
-OK - c*
-OK - bc*
-OK - c*
-OK - bc\+
-OK - bc\+
-OK - a\|ab
-OK - c\?
-OK - bc\?
-OK - bc\?
-OK - \va{1}
-OK - \va{2}
-OK - \va{2}
-OK - \va{2}
-OK - \va{2}
-OK - \va{2}
-OK - \va{2}
-OK - \vb{1}
-OK - \vba{2}
-OK - \vba{3}
-OK - \v(ab){1}
-OK - \v(ab){1}
-OK - \v(ab){1}
-OK - \v(ab){0,2}
-OK - \v(ab){0,2}
-OK - \v(ab){1,2}
-OK - \v(ab){1,2}
-OK - \v(ab){2,4}
-OK - \v(ab){2,4}
-OK - \v(ab){2}
-OK - \v(ab){2}
-OK - \v(ab){2}
-OK - \v(ab){2}
-OK - \v((ab){2}){2}
-OK - \v((ab){2}){2}
-OK - \v(a{1}){1}
-OK - \v(a{2}){1}
-OK - \v(a{2}){1}
-OK - \v(a{2}){1}
-OK - \v(a{1}){2}
-OK - \v(a{1}){2}
-OK - \v(a{2})+
-OK - \v(a{2})+
-OK - \v(a{2}){1}
-OK - \v(a{1}){2}
-OK - \v(a{1}){1}
-OK - \v(a{2}){2}
-OK - \v(a{2}){2}
-OK - \v(a+){2}
-OK - \v(a{3}){2}
-OK - \v(a{1,2}){2}
-OK - \v(a{1,3}){2}
-OK - \v(a{1,3}){2}
-OK - \v(a{1,3}){3}
-OK - \v(a{1,2}){2}
-OK - \v(a+)+
-OK - \v(a+)+
-OK - \v(a+){1,2}
-OK - \v(a+)(a+)
-OK - \v(a{3})+
-OK - \v(a|b|c)+
-OK - \v(a|b|c){2}
-OK - \v(abc){2}
-OK - \v(abc){2}
-OK - a*
-OK - \v(a*)+
-OK - \v((ab)+)+
-OK - \v(((ab)+)+)+
-OK - \v(((ab)+)+)+
-OK - \v(a{0,2})+
-OK - \v(a*)+
-OK - \v((a*)+)+
-OK - \v((ab)*)+
-OK - \va{1,3}
-OK - \va{2,3}
-OK - \v((ab)+|c*)+
-OK - \v(a{2})|(b{3})
-OK - \va{2}|b{2}
-OK - \v(a)+|(c)+
-OK - \vab{2,3}c
-OK - \vab{2,3}c
-OK - \vab{2,3}cd{2,3}e
-OK - \va(bc){2}d
-OK - \va*a{2}
-OK - \va*a{2}
-OK - \va*a{2}
-OK - \va*a{2}
-OK - \va*b*|a*c*
-OK - \va{1}b{1}|a{1}b{1}
-OK - \v(a)
-OK - \v(a)(b)
-OK - \v(ab)(b)(c)
-OK - \v((a)(b))
-OK - \v(a)|(b)
-OK - \v(a*)+
-OK - x
-OK - ab
-OK - ab
-OK - ab
-OK - x*
-OK - x*
-OK - x*
-OK - x\+
-OK - x\+
-OK - x\+
-OK - x\+
-OK - x\=
-OK - x\=
-OK - x\=
-OK - x\?
-OK - x\?
-OK - x\?
-OK - a\{0,0}
-OK - a\{0,1}
-OK - a\{1,0}
-OK - a\{3,6}
-OK - a\{3,6}
-OK - a\{3,6}
-OK - a\{0}
-OK - a\{2}
-OK - a\{2}
-OK - a\{2}
-OK - a\{0,}
-OK - a\{0,}
-OK - a\{2,}
-OK - a\{2,}
-OK - a\{,0}
-OK - a\{,5}
-OK - a\{,5}
-OK - a\{}
-OK - a\{}
-OK - a\{-0,0}
-OK - a\{-0,1}
-OK - a\{-3,6}
-OK - a\{-3,6}
-OK - a\{-3,6}
-OK - a\{-0}
-OK - a\{-2}
-OK - a\{-2}
-OK - a\{-0,}
-OK - a\{-0,}
-OK - a\{-2,}
-OK - a\{-2,}
-OK - a\{-,0}
-OK - a\{-,5}
-OK - a\{-,5}
-OK - a\{-}
-OK - a\{-}
-OK - \(abc\)*
-OK - \(ab\)\+
-OK - \(abaaaaa\)*cd
-OK - \(test1\)\? \(test2\)\?
-OK - \(test1\)\= \(test2\) \(test4443\)\=
-OK - \(\(sub1\) hello \(sub 2\)\)
-OK - \(\(\(yyxxzz\)\)\)
-OK - \v((ab)+|c+)+
-OK - \v((ab)|c*)+
-OK - \v(a(c*)+b)+
-OK - \v(a|b*)+
-OK - a\{-2,7}
-OK - a\{2,7}
-OK - \vx(.{-,8})yz(.*)
-OK - \vx(.*)yz(.*)
-OK - \v(a{1,2}){-2,3}
-OK - \v(a{-1,3})+
-OK - \d\+e\d\d
-OK - \v[a]
-OK - a[bcd]
-OK - a[b-d]
-OK - [a-d][e-f][x-x]d
-OK - \v[[:alpha:]]+
-OK - [[:alpha:]\+]
-OK - [^abc]\+
-OK - [^abc]
-OK - [^abc]\+
-OK - [^a-d]\+
-OK - [a-f]*
-OK - [a-f]*
-OK - [^a-f]\+
-OK - [a-c]\{-3,6}
-OK - [^[:alpha:]]\+
-OK - [-a]
-OK - [a-]
-OK - [-./[:alnum:]_~]\+
-OK - [\]\^\-\\]\+
-OK - [[.a.]]\+
-OK - abc[0-9]*ddd
-OK - abc[0-9]*ddd
-OK - \_[0-9]\+
-OK - [0-9\n]\+
-OK - [0-9]
-OK - [^0-9]
-OK - [0-9a-fA-F]*
-OK - [^0-9A-Fa-f]\+
-OK - [a-z_A-Z0-9]\+
-OK - [a-z]
-OK - [a-zA-Z]
-OK - [A-Z]
-OK - \C[^A-Z]\+
-OK - xx \ze test
-OK - abc\zeend
-OK - abc\zsdd
-OK - aa \zsax
-OK - abc \zsmatch\ze abc
-OK - \v(a \zsif .*){2}
-OK - \>\zs.
-OK - abc\@=
-OK - abc\@=cd
-OK - abc\@=
-OK - abcd\@=e
-OK - abcd\@=e
-OK - \v(abc)@=..
-OK - \(.*John\)\@=.*Bob
-OK - \(John.*\)\@=.*Bob
-OK - .*John\&.*Bob
-OK - .*John\&.*Bob
-OK - \v(test1)@=.*yep
-OK - [[:alpha:]]\{-2,6}
-OK - 
-OK - \v(())
-OK - \v%(ab(xyz)c)
-OK - \v(test|)empty
-OK - \v(a|aa)(a|aa)
-OK - \%d32
-OK - \%o40
-OK - \%x20
-OK - \%u0020
-OK - \%U00000020
-OK - goo\|go
-OK - \<goo\|\<go
-OK - \<goo\|go
+OK 0 - ab
+OK 1 - ab
+OK 2 - ab
+OK 0 - b
+OK 1 - b
+OK 2 - b
+OK 0 - bc*
+OK 1 - bc*
+OK 2 - bc*
+OK 0 - bc\{-}
+OK 1 - bc\{-}
+OK 0 - bc\{-}\(d\)
+OK 1 - bc\{-}\(d\)
+OK 0 - bc*
+OK 1 - bc*
+OK 2 - bc*
+OK 0 - c*
+OK 1 - c*
+OK 2 - c*
+OK 0 - bc*
+OK 1 - bc*
+OK 2 - bc*
+OK 0 - c*
+OK 1 - c*
+OK 2 - c*
+OK 0 - bc\+
+OK 1 - bc\+
+OK 2 - bc\+
+OK 0 - bc\+
+OK 1 - bc\+
+OK 2 - bc\+
+OK 0 - a\|ab
+OK 1 - a\|ab
+OK 2 - a\|ab
+OK 0 - c\?
+OK 1 - c\?
+OK 2 - c\?
+OK 0 - bc\?
+OK 1 - bc\?
+OK 2 - bc\?
+OK 0 - bc\?
+OK 1 - bc\?
+OK 2 - bc\?
+OK 0 - \va{1}
+OK 1 - \va{1}
+OK 2 - \va{1}
+OK 0 - \va{2}
+OK 1 - \va{2}
+OK 2 - \va{2}
+OK 0 - \va{2}
+OK 1 - \va{2}
+OK 2 - \va{2}
+OK 0 - \va{2}
+OK 1 - \va{2}
+OK 2 - \va{2}
+OK 0 - \va{2}
+OK 1 - \va{2}
+OK 2 - \va{2}
+OK 0 - \va{2}
+OK 1 - \va{2}
+OK 2 - \va{2}
+OK 0 - \va{2}
+OK 1 - \va{2}
+OK 2 - \va{2}
+OK 0 - \vb{1}
+OK 1 - \vb{1}
+OK 2 - \vb{1}
+OK 0 - \vba{2}
+OK 1 - \vba{2}
+OK 2 - \vba{2}
+OK 0 - \vba{3}
+OK 1 - \vba{3}
+OK 2 - \vba{3}
+OK 0 - \v(ab){1}
+OK 1 - \v(ab){1}
+OK 2 - \v(ab){1}
+OK 0 - \v(ab){1}
+OK 1 - \v(ab){1}
+OK 2 - \v(ab){1}
+OK 0 - \v(ab){1}
+OK 1 - \v(ab){1}
+OK 2 - \v(ab){1}
+OK 0 - \v(ab){0,2}
+OK 1 - \v(ab){0,2}
+OK 2 - \v(ab){0,2}
+OK 0 - \v(ab){0,2}
+OK 1 - \v(ab){0,2}
+OK 2 - \v(ab){0,2}
+OK 0 - \v(ab){1,2}
+OK 1 - \v(ab){1,2}
+OK 2 - \v(ab){1,2}
+OK 0 - \v(ab){1,2}
+OK 1 - \v(ab){1,2}
+OK 2 - \v(ab){1,2}
+OK 0 - \v(ab){2,4}
+OK 1 - \v(ab){2,4}
+OK 2 - \v(ab){2,4}
+OK 0 - \v(ab){2,4}
+OK 1 - \v(ab){2,4}
+OK 2 - \v(ab){2,4}
+OK 0 - \v(ab){2}
+OK 1 - \v(ab){2}
+OK 2 - \v(ab){2}
+OK 0 - \v(ab){2}
+OK 1 - \v(ab){2}
+OK 2 - \v(ab){2}
+OK 0 - \v(ab){2}
+OK 1 - \v(ab){2}
+OK 2 - \v(ab){2}
+OK 0 - \v(ab){2}
+OK 1 - \v(ab){2}
+OK 2 - \v(ab){2}
+OK 0 - \v((ab){2}){2}
+OK 1 - \v((ab){2}){2}
+OK 2 - \v((ab){2}){2}
+OK 0 - \v((ab){2}){2}
+OK 1 - \v((ab){2}){2}
+OK 2 - \v((ab){2}){2}
+OK 0 - \v(a{1}){1}
+OK 1 - \v(a{1}){1}
+OK 2 - \v(a{1}){1}
+OK 0 - \v(a{2}){1}
+OK 1 - \v(a{2}){1}
+OK 2 - \v(a{2}){1}
+OK 0 - \v(a{2}){1}
+OK 1 - \v(a{2}){1}
+OK 2 - \v(a{2}){1}
+OK 0 - \v(a{2}){1}
+OK 1 - \v(a{2}){1}
+OK 2 - \v(a{2}){1}
+OK 0 - \v(a{1}){2}
+OK 1 - \v(a{1}){2}
+OK 2 - \v(a{1}){2}
+OK 0 - \v(a{1}){2}
+OK 1 - \v(a{1}){2}
+OK 2 - \v(a{1}){2}
+OK 0 - \v(a{2})+
+OK 1 - \v(a{2})+
+OK 2 - \v(a{2})+
+OK 0 - \v(a{2})+
+OK 1 - \v(a{2})+
+OK 2 - \v(a{2})+
+OK 0 - \v(a{2}){1}
+OK 1 - \v(a{2}){1}
+OK 2 - \v(a{2}){1}
+OK 0 - \v(a{1}){2}
+OK 1 - \v(a{1}){2}
+OK 2 - \v(a{1}){2}
+OK 0 - \v(a{1}){1}
+OK 1 - \v(a{1}){1}
+OK 2 - \v(a{1}){1}
+OK 0 - \v(a{2}){2}
+OK 1 - \v(a{2}){2}
+OK 2 - \v(a{2}){2}
+OK 0 - \v(a{2}){2}
+OK 1 - \v(a{2}){2}
+OK 2 - \v(a{2}){2}
+OK 0 - \v(a+){2}
+OK 1 - \v(a+){2}
+OK 2 - \v(a+){2}
+OK 0 - \v(a{3}){2}
+OK 1 - \v(a{3}){2}
+OK 2 - \v(a{3}){2}
+OK 0 - \v(a{1,2}){2}
+OK 1 - \v(a{1,2}){2}
+OK 2 - \v(a{1,2}){2}
+OK 0 - \v(a{1,3}){2}
+OK 1 - \v(a{1,3}){2}
+OK 2 - \v(a{1,3}){2}
+OK 0 - \v(a{1,3}){2}
+OK 1 - \v(a{1,3}){2}
+OK 2 - \v(a{1,3}){2}
+OK 0 - \v(a{1,3}){3}
+OK 1 - \v(a{1,3}){3}
+OK 2 - \v(a{1,3}){3}
+OK 0 - \v(a{1,2}){2}
+OK 1 - \v(a{1,2}){2}
+OK 2 - \v(a{1,2}){2}
+OK 0 - \v(a+)+
+OK 1 - \v(a+)+
+OK 2 - \v(a+)+
+OK 0 - \v(a+)+
+OK 1 - \v(a+)+
+OK 2 - \v(a+)+
+OK 0 - \v(a+){1,2}
+OK 1 - \v(a+){1,2}
+OK 2 - \v(a+){1,2}
+OK 0 - \v(a+)(a+)
+OK 1 - \v(a+)(a+)
+OK 2 - \v(a+)(a+)
+OK 0 - \v(a{3})+
+OK 1 - \v(a{3})+
+OK 2 - \v(a{3})+
+OK 0 - \v(a|b|c)+
+OK 1 - \v(a|b|c)+
+OK 2 - \v(a|b|c)+
+OK 0 - \v(a|b|c){2}
+OK 1 - \v(a|b|c){2}
+OK 2 - \v(a|b|c){2}
+OK 0 - \v(abc){2}
+OK 1 - \v(abc){2}
+OK 2 - \v(abc){2}
+OK 0 - \v(abc){2}
+OK 1 - \v(abc){2}
+OK 2 - \v(abc){2}
+OK 0 - a*
+OK 1 - a*
+OK 2 - a*
+OK 0 - \v(a*)+
+OK 1 - \v(a*)+
+OK 2 - \v(a*)+
+OK 0 - \v((ab)+)+
+OK 1 - \v((ab)+)+
+OK 2 - \v((ab)+)+
+OK 0 - \v(((ab)+)+)+
+OK 1 - \v(((ab)+)+)+
+OK 2 - \v(((ab)+)+)+
+OK 0 - \v(((ab)+)+)+
+OK 1 - \v(((ab)+)+)+
+OK 2 - \v(((ab)+)+)+
+OK 0 - \v(a{0,2})+
+OK 1 - \v(a{0,2})+
+OK 2 - \v(a{0,2})+
+OK 0 - \v(a*)+
+OK 1 - \v(a*)+
+OK 2 - \v(a*)+
+OK 0 - \v((a*)+)+
+OK 1 - \v((a*)+)+
+OK 2 - \v((a*)+)+
+OK 0 - \v((ab)*)+
+OK 1 - \v((ab)*)+
+OK 2 - \v((ab)*)+
+OK 0 - \va{1,3}
+OK 1 - \va{1,3}
+OK 2 - \va{1,3}
+OK 0 - \va{2,3}
+OK 1 - \va{2,3}
+OK 2 - \va{2,3}
+OK 0 - \v((ab)+|c*)+
+OK 1 - \v((ab)+|c*)+
+OK 2 - \v((ab)+|c*)+
+OK 0 - \v(a{2})|(b{3})
+OK 1 - \v(a{2})|(b{3})
+OK 2 - \v(a{2})|(b{3})
+OK 0 - \va{2}|b{2}
+OK 1 - \va{2}|b{2}
+OK 2 - \va{2}|b{2}
+OK 0 - \v(a)+|(c)+
+OK 1 - \v(a)+|(c)+
+OK 2 - \v(a)+|(c)+
+OK 0 - \vab{2,3}c
+OK 1 - \vab{2,3}c
+OK 2 - \vab{2,3}c
+OK 0 - \vab{2,3}c
+OK 1 - \vab{2,3}c
+OK 2 - \vab{2,3}c
+OK 0 - \vab{2,3}cd{2,3}e
+OK 1 - \vab{2,3}cd{2,3}e
+OK 2 - \vab{2,3}cd{2,3}e
+OK 0 - \va(bc){2}d
+OK 1 - \va(bc){2}d
+OK 2 - \va(bc){2}d
+OK 0 - \va*a{2}
+OK 1 - \va*a{2}
+OK 2 - \va*a{2}
+OK 0 - \va*a{2}
+OK 1 - \va*a{2}
+OK 2 - \va*a{2}
+OK 0 - \va*a{2}
+OK 1 - \va*a{2}
+OK 2 - \va*a{2}
+OK 0 - \va*a{2}
+OK 1 - \va*a{2}
+OK 2 - \va*a{2}
+OK 0 - \va*b*|a*c*
+OK 1 - \va*b*|a*c*
+OK 2 - \va*b*|a*c*
+OK 0 - \va{1}b{1}|a{1}b{1}
+OK 1 - \va{1}b{1}|a{1}b{1}
+OK 2 - \va{1}b{1}|a{1}b{1}
+OK 0 - \v(a)
+OK 1 - \v(a)
+OK 2 - \v(a)
+OK 0 - \v(a)(b)
+OK 1 - \v(a)(b)
+OK 2 - \v(a)(b)
+OK 0 - \v(ab)(b)(c)
+OK 1 - \v(ab)(b)(c)
+OK 2 - \v(ab)(b)(c)
+OK 0 - \v((a)(b))
+OK 1 - \v((a)(b))
+OK 2 - \v((a)(b))
+OK 0 - \v(a)|(b)
+OK 1 - \v(a)|(b)
+OK 2 - \v(a)|(b)
+OK 0 - \v(a*)+
+OK 1 - \v(a*)+
+OK 2 - \v(a*)+
+OK 0 - x
+OK 1 - x
+OK 2 - x
+OK 0 - ab
+OK 1 - ab
+OK 2 - ab
+OK 0 - ab
+OK 1 - ab
+OK 2 - ab
+OK 0 - ab
+OK 1 - ab
+OK 2 - ab
+OK 0 - x*
+OK 1 - x*
+OK 2 - x*
+OK 0 - x*
+OK 1 - x*
+OK 2 - x*
+OK 0 - x*
+OK 1 - x*
+OK 2 - x*
+OK 0 - x\+
+OK 1 - x\+
+OK 2 - x\+
+OK 0 - x\+
+OK 1 - x\+
+OK 2 - x\+
+OK 0 - x\+
+OK 1 - x\+
+OK 2 - x\+
+OK 0 - x\+
+OK 1 - x\+
+OK 2 - x\+
+OK 0 - x\=
+OK 1 - x\=
+OK 2 - x\=
+OK 0 - x\=
+OK 1 - x\=
+OK 2 - x\=
+OK 0 - x\=
+OK 1 - x\=
+OK 2 - x\=
+OK 0 - x\?
+OK 1 - x\?
+OK 2 - x\?
+OK 0 - x\?
+OK 1 - x\?
+OK 2 - x\?
+OK 0 - x\?
+OK 1 - x\?
+OK 2 - x\?
+OK 0 - a\{0,0}
+OK 1 - a\{0,0}
+OK 2 - a\{0,0}
+OK 0 - a\{0,1}
+OK 1 - a\{0,1}
+OK 2 - a\{0,1}
+OK 0 - a\{1,0}
+OK 1 - a\{1,0}
+OK 2 - a\{1,0}
+OK 0 - a\{3,6}
+OK 1 - a\{3,6}
+OK 2 - a\{3,6}
+OK 0 - a\{3,6}
+OK 1 - a\{3,6}
+OK 2 - a\{3,6}
+OK 0 - a\{3,6}
+OK 1 - a\{3,6}
+OK 2 - a\{3,6}
+OK 0 - a\{0}
+OK 1 - a\{0}
+OK 2 - a\{0}
+OK 0 - a\{2}
+OK 1 - a\{2}
+OK 2 - a\{2}
+OK 0 - a\{2}
+OK 1 - a\{2}
+OK 2 - a\{2}
+OK 0 - a\{2}
+OK 1 - a\{2}
+OK 2 - a\{2}
+OK 0 - a\{0,}
+OK 1 - a\{0,}
+OK 2 - a\{0,}
+OK 0 - a\{0,}
+OK 1 - a\{0,}
+OK 2 - a\{0,}
+OK 0 - a\{2,}
+OK 1 - a\{2,}
+OK 2 - a\{2,}
+OK 0 - a\{2,}
+OK 1 - a\{2,}
+OK 0 - a\{,0}
+OK 1 - a\{,0}
+OK 2 - a\{,0}
+OK 0 - a\{,5}
+OK 1 - a\{,5}
+OK 2 - a\{,5}
+OK 0 - a\{,5}
+OK 1 - a\{,5}
+OK 2 - a\{,5}
+OK 0 - a\{}
+OK 1 - a\{}
+OK 2 - a\{}
+OK 0 - a\{}
+OK 1 - a\{}
+OK 2 - a\{}
+OK 0 - a\{-0,0}
+OK 1 - a\{-0,0}
+OK 2 - a\{-0,0}
+OK 0 - a\{-0,1}
+OK 1 - a\{-0,1}
+OK 2 - a\{-0,1}
+OK 0 - a\{-3,6}
+OK 1 - a\{-3,6}
+OK 2 - a\{-3,6}
+OK 0 - a\{-3,6}
+OK 1 - a\{-3,6}
+OK 2 - a\{-3,6}
+OK 0 - a\{-3,6}
+OK 1 - a\{-3,6}
+OK 2 - a\{-3,6}
+OK 0 - a\{-0}
+OK 1 - a\{-0}
+OK 2 - a\{-0}
+OK 0 - a\{-2}
+OK 1 - a\{-2}
+OK 2 - a\{-2}
+OK 0 - a\{-2}
+OK 1 - a\{-2}
+OK 2 - a\{-2}
+OK 0 - a\{-0,}
+OK 1 - a\{-0,}
+OK 0 - a\{-0,}
+OK 1 - a\{-0,}
+OK 0 - a\{-2,}
+OK 1 - a\{-2,}
+OK 2 - a\{-2,}
+OK 0 - a\{-2,}
+OK 1 - a\{-2,}
+OK 0 - a\{-,0}
+OK 1 - a\{-,0}
+OK 2 - a\{-,0}
+OK 0 - a\{-,5}
+OK 1 - a\{-,5}
+OK 2 - a\{-,5}
+OK 0 - a\{-,5}
+OK 1 - a\{-,5}
+OK 2 - a\{-,5}
+OK 0 - a\{-}
+OK 1 - a\{-}
+OK 0 - a\{-}
+OK 1 - a\{-}
+OK 0 - \(abc\)*
+OK 1 - \(abc\)*
+OK 2 - \(abc\)*
+OK 0 - \(ab\)\+
+OK 1 - \(ab\)\+
+OK 2 - \(ab\)\+
+OK 0 - \(abaaaaa\)*cd
+OK 1 - \(abaaaaa\)*cd
+OK 2 - \(abaaaaa\)*cd
+OK 0 - \(test1\)\? \(test2\)\?
+OK 1 - \(test1\)\? \(test2\)\?
+OK 2 - \(test1\)\? \(test2\)\?
+OK 0 - \(test1\)\= \(test2\) \(test4443\)\=
+OK 1 - \(test1\)\= \(test2\) \(test4443\)\=
+OK 2 - \(test1\)\= \(test2\) \(test4443\)\=
+OK 0 - \(\(sub1\) hello \(sub 2\)\)
+OK 1 - \(\(sub1\) hello \(sub 2\)\)
+OK 2 - \(\(sub1\) hello \(sub 2\)\)
+OK 0 - \(\(\(yyxxzz\)\)\)
+OK 1 - \(\(\(yyxxzz\)\)\)
+OK 2 - \(\(\(yyxxzz\)\)\)
+OK 0 - \v((ab)+|c+)+
+OK 1 - \v((ab)+|c+)+
+OK 2 - \v((ab)+|c+)+
+OK 0 - \v((ab)|c*)+
+OK 1 - \v((ab)|c*)+
+OK 2 - \v((ab)|c*)+
+OK 0 - \v(a(c*)+b)+
+OK 1 - \v(a(c*)+b)+
+OK 2 - \v(a(c*)+b)+
+OK 0 - \v(a|b*)+
+OK 1 - \v(a|b*)+
+OK 2 - \v(a|b*)+
+OK 0 - a\{-2,7}
+OK 1 - a\{-2,7}
+OK 2 - a\{-2,7}
+OK 0 - a\{2,7}
+OK 1 - a\{2,7}
+OK 2 - a\{2,7}
+OK 0 - \vx(.{-,8})yz(.*)
+OK 1 - \vx(.{-,8})yz(.*)
+OK 2 - \vx(.{-,8})yz(.*)
+OK 0 - \vx(.*)yz(.*)
+OK 1 - \vx(.*)yz(.*)
+OK 2 - \vx(.*)yz(.*)
+OK 0 - \v(a{1,2}){-2,3}
+OK 1 - \v(a{1,2}){-2,3}
+OK 2 - \v(a{1,2}){-2,3}
+OK 0 - \v(a{-1,3})+
+OK 1 - \v(a{-1,3})+
+OK 2 - \v(a{-1,3})+
+OK 0 - \d\+e\d\d
+OK 1 - \d\+e\d\d
+OK 2 - \d\+e\d\d
+OK 0 - \v[a]
+OK 1 - \v[a]
+OK 2 - \v[a]
+OK 0 - a[bcd]
+OK 1 - a[bcd]
+OK 2 - a[bcd]
+OK 0 - a[b-d]
+OK 1 - a[b-d]
+OK 2 - a[b-d]
+OK 0 - [a-d][e-f][x-x]d
+OK 1 - [a-d][e-f][x-x]d
+OK 2 - [a-d][e-f][x-x]d
+OK 0 - \v[[:alpha:]]+
+OK 1 - \v[[:alpha:]]+
+OK 2 - \v[[:alpha:]]+
+OK 0 - [[:alpha:]\+]
+OK 1 - [[:alpha:]\+]
+OK 2 - [[:alpha:]\+]
+OK 0 - [^abc]\+
+OK 1 - [^abc]\+
+OK 2 - [^abc]\+
+OK 0 - [^abc]
+OK 1 - [^abc]
+OK 2 - [^abc]
+OK 0 - [^abc]\+
+OK 1 - [^abc]\+
+OK 2 - [^abc]\+
+OK 0 - [^a-d]\+
+OK 1 - [^a-d]\+
+OK 2 - [^a-d]\+
+OK 0 - [a-f]*
+OK 1 - [a-f]*
+OK 2 - [a-f]*
+OK 0 - [a-f]*
+OK 1 - [a-f]*
+OK 2 - [a-f]*
+OK 0 - [^a-f]\+
+OK 1 - [^a-f]\+
+OK 2 - [^a-f]\+
+OK 0 - [a-c]\{-3,6}
+OK 1 - [a-c]\{-3,6}
+OK 2 - [a-c]\{-3,6}
+OK 0 - [^[:alpha:]]\+
+OK 1 - [^[:alpha:]]\+
+OK 2 - [^[:alpha:]]\+
+OK 0 - [-a]
+OK 1 - [-a]
+OK 2 - [-a]
+OK 0 - [a-]
+OK 1 - [a-]
+OK 2 - [a-]
+OK 0 - [-./[:alnum:]_~]\+
+OK 1 - [-./[:alnum:]_~]\+
+OK 2 - [-./[:alnum:]_~]\+
+OK 0 - [\]\^\-\\]\+
+OK 1 - [\]\^\-\\]\+
+OK 2 - [\]\^\-\\]\+
+OK 0 - [[.a.]]\+
+OK 1 - [[.a.]]\+
+OK 2 - [[.a.]]\+
+OK 0 - abc[0-9]*ddd
+OK 1 - abc[0-9]*ddd
+OK 2 - abc[0-9]*ddd
+OK 0 - abc[0-9]*ddd
+OK 1 - abc[0-9]*ddd
+OK 2 - abc[0-9]*ddd
+OK 0 - \_[0-9]\+
+OK 1 - \_[0-9]\+
+OK 2 - \_[0-9]\+
+OK 0 - [0-9\n]\+
+OK 1 - [0-9\n]\+
+OK 2 - [0-9\n]\+
+OK 0 - [0-9]
+OK 1 - [0-9]
+OK 2 - [0-9]
+OK 0 - [^0-9]
+OK 1 - [^0-9]
+OK 2 - [^0-9]
+OK 0 - [0-9a-fA-F]*
+OK 1 - [0-9a-fA-F]*
+OK 2 - [0-9a-fA-F]*
+OK 0 - [^0-9A-Fa-f]\+
+OK 1 - [^0-9A-Fa-f]\+
+OK 2 - [^0-9A-Fa-f]\+
+OK 0 - [a-z_A-Z0-9]\+
+OK 1 - [a-z_A-Z0-9]\+
+OK 2 - [a-z_A-Z0-9]\+
+OK 0 - [a-z]
+OK 1 - [a-z]
+OK 2 - [a-z]
+OK 0 - [a-zA-Z]
+OK 1 - [a-zA-Z]
+OK 2 - [a-zA-Z]
+OK 0 - [A-Z]
+OK 1 - [A-Z]
+OK 2 - [A-Z]
+OK 0 - \C[^A-Z]\+
+OK 1 - \C[^A-Z]\+
+OK 2 - \C[^A-Z]\+
+OK 0 - xx \ze test
+OK 1 - xx \ze test
+OK 2 - xx \ze test
+OK 0 - abc\zeend
+OK 1 - abc\zeend
+OK 0 - abc\zsdd
+OK 1 - abc\zsdd
+OK 2 - abc\zsdd
+OK 0 - aa \zsax
+OK 1 - aa \zsax
+OK 2 - aa \zsax
+OK 0 - abc \zsmatch\ze abc
+OK 1 - abc \zsmatch\ze abc
+OK 0 - \v(a \zsif .*){2}
+OK 1 - \v(a \zsif .*){2}
+OK 2 - \v(a \zsif .*){2}
+OK 0 - \>\zs.
+OK 1 - \>\zs.
+OK 2 - \>\zs.
+OK 0 - abc\@=
+OK 1 - abc\@=
+OK 0 - abc\@=cd
+OK 1 - abc\@=cd
+OK 0 - abc\@=
+OK 1 - abc\@=
+OK 0 - abcd\@=e
+OK 1 - abcd\@=e
+OK 2 - abcd\@=e
+OK 0 - abcd\@=e
+OK 1 - abcd\@=e
+OK 2 - abcd\@=e
+OK 0 - \v(abc)@=..
+OK 1 - \v(abc)@=..
+OK 0 - \(.*John\)\@=.*Bob
+OK 1 - \(.*John\)\@=.*Bob
+OK 2 - \(.*John\)\@=.*Bob
+OK 0 - \(John.*\)\@=.*Bob
+OK 1 - \(John.*\)\@=.*Bob
+OK 0 - .*John\&.*Bob
+OK 1 - .*John\&.*Bob
+OK 2 - .*John\&.*Bob
+OK 0 - .*John\&.*Bob
+OK 1 - .*John\&.*Bob
+OK 0 - \v(test1)@=.*yep
+OK 1 - \v(test1)@=.*yep
+OK 0 - [[:alpha:]]\{-2,6}
+OK 1 - [[:alpha:]]\{-2,6}
+OK 2 - [[:alpha:]]\{-2,6}
+OK 0 - 
+OK 1 - 
+OK 2 - 
+OK 0 - \v(())
+OK 1 - \v(())
+OK 2 - \v(())
+OK 0 - \v%(ab(xyz)c)
+OK 1 - \v%(ab(xyz)c)
+OK 2 - \v%(ab(xyz)c)
+OK 0 - \v(test|)empty
+OK 1 - \v(test|)empty
+OK 2 - \v(test|)empty
+OK 0 - \v(a|aa)(a|aa)
+OK 1 - \v(a|aa)(a|aa)
+OK 2 - \v(a|aa)(a|aa)
+OK 0 - \%d32
+OK 1 - \%d32
+OK 2 - \%d32
+OK 0 - \%o40
+OK 1 - \%o40
+OK 2 - \%o40
+OK 0 - \%x20
+OK 1 - \%x20
+OK 2 - \%x20
+OK 0 - \%u0020
+OK 1 - \%u0020
+OK 2 - \%u0020
+OK 0 - \%U00000020
+OK 1 - \%U00000020
+OK 2 - \%U00000020
+OK 0 - goo\|go
+OK 1 - goo\|go
+OK 2 - goo\|go
+OK 0 - \<goo\|\<go
+OK 1 - \<goo\|\<go
+OK 2 - \<goo\|\<go
+OK 0 - \<goo\|go
+OK 1 - \<goo\|go
+OK 2 - \<goo\|go
+192.168.0.1
+192.168.0.1
 192.168.0.1
diff --git a/src/testdir/test95.in b/src/testdir/test95.in
index 2484ace..9c3ca8f 100644
--- a/src/testdir/test95.in
+++ b/src/testdir/test95.in
@@ -20,79 +20,90 @@
 
 :"""" Multi-byte character tests. These will fail unless vim is compiled
 :"""" with Multibyte (FEAT_MBYTE) or BIG/HUGE features.
-:call add(tl, ['[[:alpha:][=a=]]\+', '879 aiaãâaiuvna ', 'aiaãâaiuvna'])
-:call add(tl, ['[[=a=]]\+', 'ddaãâbcd', 'aãâ'])								" equivalence classes
-:call add(tl, ['[^ม ]\+', 'มม oijasoifjos ifjoisj f osij j มมมมม abcd', 'oijasoifjos'])
-:call add(tl, [' [^ ]\+', 'start มabcdม ', ' มabcdม'])
-:call add(tl, ['[ม[:alpha:][=a=]]\+', '879 aiaãมâมaiuvna ', 'aiaãมâมaiuvna'])
+:call add(tl, [2, '[[:alpha:][=a=]]\+', '879 aiaãâaiuvna ', 'aiaãâaiuvna'])
+:call add(tl, [2, '[[=a=]]\+', 'ddaãâbcd', 'aãâ'])								" equivalence classes
+:call add(tl, [2, '[^ม ]\+', 'มม oijasoifjos ifjoisj f osij j มมมมม abcd', 'oijasoifjos'])
+:call add(tl, [2, ' [^ ]\+', 'start มabcdม ', ' มabcdม'])
+:call add(tl, [2, '[ม[:alpha:][=a=]]\+', '879 aiaãมâมaiuvna ', 'aiaãมâมaiuvna'])
 
 :" this is not a normal "i" but 0xec
-:call add(tl, ['\p\+', 'ìa', 'ìa'])
+:call add(tl, [2, '\p\+', 'ìa', 'ìa'])
 
 :"""" Test recognition of some character classes
-:call add(tl, ['\i\+', '&*¨xx ', 'xx'])
-:call add(tl, ['\%#=1\i\+', '&*¨xx ', 'xx'])
-:call add(tl, ['\f\+', '&*fname ', 'fname'])
-:call add(tl, ['\%#=1\f\+', '&*fname ', 'fname'])
+:call add(tl, [2, '\i\+', '&*¨xx ', 'xx'])
+:call add(tl, [2, '\f\+', '&*fname ', 'fname'])
 
 :"""" Test composing character matching
-:call add(tl, ['.ม', 'xม่x yมy', 'yม'])
-:call add(tl, ['.ม่', 'xม่x yมy', 'xม่'])
-:call add(tl, ["\u05b9", " x\u05b9 ", "x\u05b9"])
-:call add(tl, [".\u05b9", " x\u05b9 ", "x\u05b9"])
-:call add(tl, ["\u05b9\u05bb", " x\u05b9\u05bb ", "x\u05b9\u05bb"])
-:call add(tl, [".\u05b9\u05bb", " x\u05b9\u05bb ", "x\u05b9\u05bb"])
-:call add(tl, ["\u05bb\u05b9", " x\u05b9\u05bb "])
-:call add(tl, [".\u05bb\u05b9", " x\u05b9\u05bb "])
-:call add(tl, ["\u05b9", " y\u05bb x\u05b9 ", "x\u05b9"])
-:call add(tl, [".\u05b9", " y\u05bb x\u05b9 ", "x\u05b9"])
+:call add(tl, [2, '.ม', 'xม่x yมy', 'yม'])
+:call add(tl, [2, '.ม่', 'xม่x yมy', 'xม่'])
+:call add(tl, [2, "\u05b9", " x\u05b9 ", "x\u05b9"])
+:call add(tl, [2, ".\u05b9", " x\u05b9 ", "x\u05b9"])
+:call add(tl, [2, "\u05b9\u05bb", " x\u05b9\u05bb ", "x\u05b9\u05bb"])
+:call add(tl, [2, ".\u05b9\u05bb", " x\u05b9\u05bb ", "x\u05b9\u05bb"])
+:"call add(tl, [2, "\u05bb\u05b9", " x\u05b9\u05bb "])
+:"call add(tl, [2, ".\u05bb\u05b9", " x\u05b9\u05bb "])
+:call add(tl, [2, "\u05b9", " y\u05bb x\u05b9 ", "x\u05b9"])
+:call add(tl, [2, ".\u05b9", " y\u05bb x\u05b9 ", "x\u05b9"])
 
 
 :"""" Test \Z
-:call add(tl, ['ú\Z', 'x'])
-:call add(tl, ['יהוה\Z', 'יהוה', 'יהוה'])
-:call add(tl, ['יְהוָה\Z', 'יהוה', 'יהוה'])
-:call add(tl, ['יהוה\Z', 'יְהוָה', 'יְהוָה'])
-:call add(tl, ['יְהוָה\Z', 'יְהוָה', 'יְהוָה'])
-:call add(tl, ['יְ\Z', 'וְיַ', 'יַ'])
-:call add(tl, ["ק\u200d\u05b9x\\Z", "xק\u200d\u05b9xy", "ק\u200d\u05b9x"])
-:call add(tl, ["ק\u200d\u05b9x\\Z", "xק\u200dxy", "ק\u200dx"])
-:call add(tl, ["ק\u200dx\\Z", "xק\u200d\u05b9xy", "ק\u200d\u05b9x"])
-:call add(tl, ["ק\u200dx\\Z", "xק\u200dxy", "ק\u200dx"])
-:call add(tl, ["\u05b9\\+\\Z", "xyz", "xyz"])
-:call add(tl, ["\\Z\u05b9\\+", "xyz", "xyz"])
+:call add(tl, [2, 'ú\Z', 'x'])
+:call add(tl, [2, 'יהוה\Z', 'יהוה', 'יהוה'])
+:call add(tl, [2, 'יְהוָה\Z', 'יהוה', 'יהוה'])
+:call add(tl, [2, 'יהוה\Z', 'יְהוָה', 'יְהוָה'])
+:call add(tl, [2, 'יְהוָה\Z', 'יְהוָה', 'יְהוָה'])
+:call add(tl, [2, 'יְ\Z', 'וְיַ', 'יַ'])
+:call add(tl, [2, "ק\u200d\u05b9x\\Z", "xק\u200d\u05b9xy", "ק\u200d\u05b9x"])
+:call add(tl, [2, "ק\u200d\u05b9x\\Z", "xק\u200dxy", "ק\u200dx"])
+:call add(tl, [2, "ק\u200dx\\Z", "xק\u200d\u05b9xy", "ק\u200d\u05b9x"])
+:call add(tl, [2, "ק\u200dx\\Z", "xק\u200dxy", "ק\u200dx"])
+:"call add(tl, [2, "\u05b9\\Z", "xyz"])
+:"call add(tl, [2, "\\Z\u05b9", "xyz"])
+:"call add(tl, [2, "\u05b9\\+\\Z", "xyz", "xyz"])
+:"call add(tl, [2, "\\Z\u05b9\\+", "xyz", "xyz"])
 
 :"""" Combining different tests and features
-:call add(tl, ['[^[=a=]]\+', 'ddaãâbcd', 'dd'])
+:call add(tl, [2, '[^[=a=]]\+', 'ddaãâbcd', 'dd'])
 
 :"""" Run the tests
+
 :"
 :for t in tl
-:  let l = matchlist(t[1], t[0])
+:  let re = t[0]
+:  let pat = t[1]
+:  let text = t[2]
+:  let matchidx = 3
+:  for engine in [0, 1, 2]
+:    if engine == 2 && !re
+:      continue
+:    endif
+:    let &regexpengine = engine
+:    let l = matchlist(text, pat)
 :" check the match itself
-:  if len(l) == 0 && len(t) > 2
-:    $put ='ERROR: pat: \"' . t[0] . '\", text: \"' . t[1] . '\", did not match, expected: \"' . t[2] . '\"'
-:  elseif len(l) > 0 && len(t) == 2
-:    $put ='ERROR: pat: \"' . t[0] . '\", text: \"' . t[1] . '\", match: \"' . l[0] . '\", expected no match'
-:  elseif len(t) > 2 && l[0] != t[2]
-:    $put ='ERROR: pat: \"' . t[0] . '\", text: \"' . t[1] . '\", match: \"' . l[0] . '\", expected: \"' . t[2] . '\"'
-:  else
-:    $put ='OK - ' . t[0]
-:  endif
-:  if len(l) > 0
+:    if len(l) == 0 && len(t) > matchidx
+:      $put ='ERROR: pat: \"' . pat . '\", text: \"' . text . '\", did not match, expected: \"' . t[matchidx] . '\"'
+:    elseif len(l) > 0 && len(t) == matchidx
+:      $put ='ERROR: pat: \"' . pat . '\", text: \"' . text . '\", match: \"' . l[0] . '\", expected no match'
+:    elseif len(t) > matchidx && l[0] != t[matchidx]
+:      $put ='ERROR: pat: \"' . pat . '\", text: \"' . text . '\", match: \"' . l[0] . '\", expected: \"' . t[matchidx] . '\"'
+:    else
+:      $put ='OK ' . engine . ' - ' . pat
+:    endif
+:    if len(l) > 0
 :"   check all the nine submatches
-:    for i in range(1, 9)
-:      if len(t) <= i + 2
-:        let e = ''
-:      else
-:        let e = t[i + 2]
-:      endif
-:      if l[i] != e
-:        $put ='ERROR: pat: \"' . t[0] . '\", text: \"' . t[1] . '\", submatch ' . i . ': \"' . l[i] . '\", expected: \"' . e . '\"'
-:      endif
-:    endfor
-:    unlet i
-:  endif
+:      for i in range(1, 9)
+:        if len(t) <= matchidx + i
+:          let e = ''
+:        else
+:          let e = t[matchidx + i]
+:        endif
+:        if l[i] != e
+:          $put ='ERROR: pat: \"' . pat . '\", text: \"' . text . '\", submatch ' . i . ': \"' . l[i] . '\", expected: \"' . e . '\"'
+:        endif
+:      endfor
+:      unlet i
+:    endif
+:  endfor
 :endfor
 :unlet t tl e l
 
diff --git a/src/testdir/test95.ok b/src/testdir/test95.ok
index 9211c2c..a2e3d86 100644
--- a/src/testdir/test95.ok
+++ b/src/testdir/test95.ok
@@ -1,34 +1,82 @@
 Results of test95:
-OK - [[:alpha:][=a=]]\+
-OK - [[=a=]]\+
-OK - [^ม ]\+
-OK -  [^ ]\+
-OK - [ม[:alpha:][=a=]]\+
-OK - \p\+
-OK - \i\+
-OK - \%#=1\i\+
-OK - \f\+
-OK - \%#=1\f\+
-OK - .ม
-OK - .ม่
-OK - ֹ
-OK - .ֹ
-OK - ֹֻ
-OK - .ֹֻ
-OK - ֹֻ
-OK - .ֹֻ
-OK - ֹ
-OK - .ֹ
-OK - ú\Z
-OK - יהוה\Z
-OK - יְהוָה\Z
-OK - יהוה\Z
-OK - יְהוָה\Z
-OK - יְ\Z
-OK - ק‍ֹx\Z
-OK - ק‍ֹx\Z
-OK - ק‍x\Z
-OK - ק‍x\Z
-OK - ֹ\+\Z
-OK - \Zֹ\+
-OK - [^[=a=]]\+
+OK 0 - [[:alpha:][=a=]]\+
+OK 1 - [[:alpha:][=a=]]\+
+OK 2 - [[:alpha:][=a=]]\+
+OK 0 - [[=a=]]\+
+OK 1 - [[=a=]]\+
+OK 2 - [[=a=]]\+
+OK 0 - [^ม ]\+
+OK 1 - [^ม ]\+
+OK 2 - [^ม ]\+
+OK 0 -  [^ ]\+
+OK 1 -  [^ ]\+
+OK 2 -  [^ ]\+
+OK 0 - [ม[:alpha:][=a=]]\+
+OK 1 - [ม[:alpha:][=a=]]\+
+OK 2 - [ม[:alpha:][=a=]]\+
+OK 0 - \p\+
+OK 1 - \p\+
+OK 2 - \p\+
+OK 0 - \i\+
+OK 1 - \i\+
+OK 2 - \i\+
+OK 0 - \f\+
+OK 1 - \f\+
+OK 2 - \f\+
+OK 0 - .ม
+OK 1 - .ม
+OK 2 - .ม
+OK 0 - .ม่
+OK 1 - .ม่
+OK 2 - .ม่
+OK 0 - ֹ
+OK 1 - ֹ
+OK 2 - ֹ
+OK 0 - .ֹ
+OK 1 - .ֹ
+OK 2 - .ֹ
+OK 0 - ֹֻ
+OK 1 - ֹֻ
+OK 2 - ֹֻ
+OK 0 - .ֹֻ
+OK 1 - .ֹֻ
+OK 2 - .ֹֻ
+OK 0 - ֹ
+OK 1 - ֹ
+OK 2 - ֹ
+OK 0 - .ֹ
+OK 1 - .ֹ
+OK 2 - .ֹ
+OK 0 - ú\Z
+OK 1 - ú\Z
+OK 2 - ú\Z
+OK 0 - יהוה\Z
+OK 1 - יהוה\Z
+OK 2 - יהוה\Z
+OK 0 - יְהוָה\Z
+OK 1 - יְהוָה\Z
+OK 2 - יְהוָה\Z
+OK 0 - יהוה\Z
+OK 1 - יהוה\Z
+OK 2 - יהוה\Z
+OK 0 - יְהוָה\Z
+OK 1 - יְהוָה\Z
+OK 2 - יְהוָה\Z
+OK 0 - יְ\Z
+OK 1 - יְ\Z
+OK 2 - יְ\Z
+OK 0 - ק‍ֹx\Z
+OK 1 - ק‍ֹx\Z
+OK 2 - ק‍ֹx\Z
+OK 0 - ק‍ֹx\Z
+OK 1 - ק‍ֹx\Z
+OK 2 - ק‍ֹx\Z
+OK 0 - ק‍x\Z
+OK 1 - ק‍x\Z
+OK 2 - ק‍x\Z
+OK 0 - ק‍x\Z
+OK 1 - ק‍x\Z
+OK 2 - ק‍x\Z
+OK 0 - [^[=a=]]\+
+OK 1 - [^[=a=]]\+
+OK 2 - [^[=a=]]\+
diff --git a/src/version.c b/src/version.c
index 0c4fe73..94d9a1a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1020,
+/**/
     1019,
 /**/
     1018,