This is pretty pathetic and full of errors,

but it makes the regression test not complain about test_re.

Lib/test/output/test_re

+test_re
+('abc', 'abc', 0, 'found', 'abc')
+('abc', 'xbc', 1)
+('abc', 'axc', 1)
+('abc', 'abx', 1)
+('abc', 'xabcy', 0, 'found', 'abc')
+('abc', 'ababc', 0, 'found', 'abc')
+('ab*c', 'abc', 0, 'found', 'abc')
+('ab*bc', 'abc', 0, 'found', 'abc')
+('ab*bc', 'abbc', 0, 'found', 'abbc')
+('ab*bc', 'abbbbc', 0, 'found', 'abbbbc')
+('ab+bc', 'abbc', 0, 'found', 'abbc')
+('ab+bc', 'abc', 1)
+('ab+bc', 'abq', 1)
+('ab+bc', 'abbbbc', 0, 'found', 'abbbbc')
+('ab?bc', 'abbc', 0, 'found', 'abbc')
+('ab?bc', 'abc', 0, 'found', 'abc')
+('ab?bc', 'abbbbc', 1)
+('ab?c', 'abc', 0, 'found', 'abc')
+('^abc$', 'abc', 0, 'found', 'abc')
+('^abc$', 'abcc', 1)
+('^abc', 'abcc', 0, 'found', 'abc')
+('^abc$', 'aabc', 1)
+('abc$', 'aabc', 0, 'found', 'abc')
+('^', 'abc', 0, 'found+"-"', '-')
+('$', 'abc', 0, 'found+"-"', '-')
+('a.c', 'abc', 0, 'found', 'abc')
+('a.c', 'axc', 0, 'found', 'axc')
+('a.*c', 'axyzc', 0, 'found', 'axyzc')
+('a.*c', 'axyzd', 1)
+('a[bc]d', 'abc', 1)
+('a[bc]d', 'abd', 0, 'found', 'abd')
+('a[b-d]e', 'abd', 1)
+('a[b-d]e', 'ace', 0, 'found', 'ace')
+('a[b-d]', 'aac', 0, 'found', 'ac')
+('a[-b]', 'a-', 0, 'found', 'a-')
+('a[b-]', 'a-', 2)
+('a[]b', '-', 2)
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 1078, in compile
+    if pattern[index] != ']':
+IndexError: string index out of range
+('a[', '-', 2)
+('a\\', '-', 2)
+('abc)', '-', 2)
+('(abc', '-', 2)
+('a]', 'a]', 0, 'found', 'a]')
+('a[]]b', 'a]b', 0, 'found', 'a]b')
+('a[^bc]d', 'aed', 0, 'found', 'aed')
+('a[^bc]d', 'abd', 1)
+('a[^-b]c', 'adc', 0, 'found', 'adc')
+('a[^-b]c', 'a-c', 1)
+('a[^]b]c', 'a]c', 1)
+('a[^]b]c', 'adc', 0, 'found', 'adc')
+('\\ba\\b', 'a-', 0, '"-"', '-')
+=== Failed incorrectly ('\\ba\\b', 'a-', 0, '"-"', '-')
+('\\ba\\b', '-a', 0, '"-"', '-')
+=== Failed incorrectly ('\\ba\\b', '-a', 0, '"-"', '-')
+('\\ba\\b', '-a-', 0, '"-"', '-')
+=== Failed incorrectly ('\\ba\\b', '-a-', 0, '"-"', '-')
+('\\by\\b', 'xy', 1)
+('\\by\\b', 'yz', 1)
+('\\by\\b', 'xyz', 1)
+('ab|cd', 'abc', 0, 'found', 'ab')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 1097, in compile
+    if stack[-1][0].name == '(':
+AttributeError: attribute-less object
+('ab|cd', 'abcd', 0, 'found', 'ab')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 1097, in compile
+    if stack[-1][0].name == '(':
+AttributeError: attribute-less object
+('()ef', 'def', 0, 'found+"-"+g1', 'ef-')
+=== Syntax error: ('()ef', 'def', 0, 'found+"-"+g1', 'ef-')
+('$b', 'b', 1)
+('a(b', 'a(b', 0, 'found+"-"+g1', 'a(b-None')
+=== Syntax error: ('a(b', 'a(b', 0, 'found+"-"+g1', 'a(b-None')
+('a\\(*b', 'ab', 0, 'found', 'ab')
+('a\\(*b', 'a((b', 0, 'found', 'a((b')
+=== Failed incorrectly ('a\\(*b', 'a((b', 0, 'found', 'a((b')
+('a\\\\b', 'a\\b', 0, 'found', 'a\\b')
+=== Failed incorrectly ('a\\\\b', 'a\\b', 0, 'found', 'a\\b')
+('((a))', 'abc', 0, 'found+"-"+g1+"-"+g2', 'a-a-a')
+=== grouping error ('((a))', 'abc', 0, 'found+"-"+g1+"-"+g2', 'a-a-a') 'a--' should be 'a-a-a'
+('(a)b(c)', 'abc', 0, 'found+"-"+g1+"-"+g2', 'abc-a-c')
+=== grouping error ('(a)b(c)', 'abc', 0, 'found+"-"+g1+"-"+g2', 'abc-a-c') 'abc--' should be 'abc-a-c'
+('a+b+c', 'aabbabc', 0, 'found', 'abc')
+('(a+|b)*', 'ab', 0, 'found+"-"+g1', 'ab-b')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('(a+|b)+', 'ab', 0, 'found+"-"+g1', 'ab-b')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('(a+|b)?', 'ab', 0, 'found+"-"+g1', 'a-a')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+(')(', '-', 2)
+('[^ab]*', 'cde', 0, 'found', 'cde')
+('abc', '', 1)
+('a*', '', 0, 'found', '')
+('a|b|c|d|e', 'e', 0, 'found', 'e')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 625, in compile
+    while (len(stack) != 0) and \
+AttributeError: attribute-less object
+('(a|b|c|d|e)f', 'ef', 0, 'found+"-"+g1', 'ef-e')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 625, in compile
+    while (len(stack) != 0) and \
+AttributeError: attribute-less object
+('abcd*efg', 'abcdefg', 0, 'found', 'abcdefg')
+('ab*', 'xabyabbbz', 0, 'found', 'ab')
+('ab*', 'xayabbbz', 0, 'found', 'a')
+('(ab|cd)e', 'abcde', 0, 'found+"-"+g1', 'cde-cd')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('[abhgefdc]ij', 'hij', 0, 'found', 'hij')
+('^(ab|cd)e', 'abcde', 1, 'xg1y', 'xy')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('(abc|)ef', 'abcdef', 0, 'found+"-"+g1', 'ef-')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('(a|b)c*d', 'abcd', 0, 'found+"-"+g1', 'bcd-b')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('(ab|ab*)bc', 'abc', 0, 'found+"-"+g1', 'abc-a')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('a([bc]*)c*', 'abc', 0, 'found+"-"+g1', 'abc-bc')
+=== grouping error ('a([bc]*)c*', 'abc', 0, 'found+"-"+g1', 'abc-bc') 'abc-' should be 'abc-bc'
+('a([bc]*)(c*d)', 'abcd', 0, 'found+"-"+g1+"-"+g2', 'abcd-bc-d')
+=== grouping error ('a([bc]*)(c*d)', 'abcd', 0, 'found+"-"+g1+"-"+g2', 'abcd-bc-d') 'abcd--' should be 'abcd-bc-d'
+('a([bc]+)(c*d)', 'abcd', 0, 'found+"-"+g1+"-"+g2', 'abcd-bc-d')
+=== grouping error ('a([bc]+)(c*d)', 'abcd', 0, 'found+"-"+g1+"-"+g2', 'abcd-bc-d') 'abcd--' should be 'abcd-bc-d'
+('a([bc]*)(c+d)', 'abcd', 0, 'found+"-"+g1+"-"+g2', 'abcd-b-cd')
+=== grouping error ('a([bc]*)(c+d)', 'abcd', 0, 'found+"-"+g1+"-"+g2', 'abcd-b-cd') 'abcd--' should be 'abcd-b-cd'
+('a[bcd]*dcdcde', 'adcdcde', 0, 'found', 'adcdcde')
+('a[bcd]+dcdcde', 'adcdcde', 1)
+('(ab|a)b*c', 'abc', 0, 'found+"-"+g1', 'abc-ab')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('((a)(b)c)(d)', 'abcd', 0, 'g1+"-"+g2+"-"+g3+"-"+g4', 'abc-a-b-d')
+=== grouping error ('((a)(b)c)(d)', 'abcd', 0, 'g1+"-"+g2+"-"+g3+"-"+g4', 'abc-a-b-d') '---' should be 'abc-a-b-d'
+('[a-zA-Z_][a-zA-Z0-9_]*', 'alpha', 0, 'found', 'alpha')
+('^a(bc+|b[eh])g|.h$', 'abh', 0, 'found+"-"+g1', 'bh-None')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('(bc+d$|ef*g.|h?i(j|k))', 'effgz', 0, 'found+"-"+g1+"-"+g2', 'effgz-effgz-None')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 625, in compile
+    while (len(stack) != 0) and \
+AttributeError: attribute-less object
+('(bc+d$|ef*g.|h?i(j|k))', 'ij', 0, 'found+"-"+g1+"-"+g2', 'ij-ij-j')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 625, in compile
+    while (len(stack) != 0) and \
+AttributeError: attribute-less object
+('(bc+d$|ef*g.|h?i(j|k))', 'effg', 1)
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 625, in compile
+    while (len(stack) != 0) and \
+AttributeError: attribute-less object
+('(bc+d$|ef*g.|h?i(j|k))', 'bcdd', 1)
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 625, in compile
+    while (len(stack) != 0) and \
+AttributeError: attribute-less object
+('(bc+d$|ef*g.|h?i(j|k))', 'reffgz', 0, 'found+"-"+g1+"-"+g2', 'effgz-effgz-None')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 625, in compile
+    while (len(stack) != 0) and \
+AttributeError: attribute-less object
+('(((((((((a)))))))))', 'a', 0, 'found', 'a')
+('multiple words of text', 'uh-uh', 1)
+('multiple words', 'multiple words, yeah', 0, 'found', 'multiple words')
+=== Failed incorrectly ('multiple words', 'multiple words, yeah', 0, 'found', 'multiple words')
+('(.*)c(.*)', 'abcde', 0, 'found+"-"+g1+"-"+g2', 'abcde-ab-de')
+=== grouping error ('(.*)c(.*)', 'abcde', 0, 'found+"-"+g1+"-"+g2', 'abcde-ab-de') 'abcde--' should be 'abcde-ab-de'
+('((.*), (.*))', '(a, b)', 0, 'g2+"-"+g1', 'b-a')
+=== grouping error ('((.*), (.*))', '(a, b)', 0, 'g2+"-"+g1', 'b-a') '-' should be 'b-a'
+('[k]', 'ab', 1)
+('a[-]?c', 'ac', 0, 'found', 'ac')
+('(abc)\\1', 'abcabc', 0, 'g1', 'abc')
+=== grouping error ('(abc)\\1', 'abcabc', 0, 'g1', 'abc') '' should be 'abc'
+('([a-c]*)\\1', 'abcabc', 0, 'g1', 'abc')
+=== grouping error ('([a-c]*)\\1', 'abcabc', 0, 'g1', 'abc') '' should be 'abc'
+('^(.+)?B', 'AB', 0, 'g1', 'A')
+=== grouping error ('^(.+)?B', 'AB', 0, 'g1', 'A') '' should be 'A'
+('(a+).\\1$', 'aaaaa', 0, 'found+"-"+g1', 'aaaaa-aa')
+=== grouping error ('(a+).\\1$', 'aaaaa', 0, 'found+"-"+g1', 'aaaaa-aa') 'aaaaa-' should be 'aaaaa-aa'
+('^(a+).\\1$', 'aaaa', 1)
+('(abc)\\1', 'abcabc', 0, 'found+"-"+g1', 'abcabc-abc')
+=== grouping error ('(abc)\\1', 'abcabc', 0, 'found+"-"+g1', 'abcabc-abc') 'abcabc-' should be 'abcabc-abc'
+('([a-c]+)\\1', 'abcabc', 0, 'found+"-"+g1', 'abcabc-abc')
+=== grouping error ('([a-c]+)\\1', 'abcabc', 0, 'found+"-"+g1', 'abcabc-abc') 'abcabc-' should be 'abcabc-abc'
+('(a)\\1', 'aa', 0, 'found+"-"+g1', 'aa-a')
+=== grouping error ('(a)\\1', 'aa', 0, 'found+"-"+g1', 'aa-a') 'aa-' should be 'aa-a'
+('(a+)\\1', 'aa', 0, 'found+"-"+g1', 'aa-a')
+=== grouping error ('(a+)\\1', 'aa', 0, 'found+"-"+g1', 'aa-a') 'aa-' should be 'aa-a'
+('(a+)+\\1', 'aa', 0, 'found+"-"+g1', 'aa-a')
+=== grouping error ('(a+)+\\1', 'aa', 0, 'found+"-"+g1', 'aa-a') 'aa-' should be 'aa-a'
+('(a).+\\1', 'aba', 0, 'found+"-"+g1', 'aba-a')
+=== grouping error ('(a).+\\1', 'aba', 0, 'found+"-"+g1', 'aba-a') 'aba-' should be 'aba-a'
+('(a)ba*\\1', 'aba', 0, 'found+"-"+g1', 'aba-a')
+=== grouping error ('(a)ba*\\1', 'aba', 0, 'found+"-"+g1', 'aba-a') 'aba-' should be 'aba-a'
+('(aa|a)a\\1$', 'aaa', 0, 'found+"-"+g1', 'aaa-a')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('(a|aa)a\\1$', 'aaa', 0, 'found+"-"+g1', 'aaa-a')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 745, in compile
+    while (len(stack) > 0) and (stack[-1][0].name != '('):
+AttributeError: attribute-less object
+('(a+)a\\1$', 'aaa', 0, 'found+"-"+g1', 'aaa-a')
+=== grouping error ('(a+)a\\1$', 'aaa', 0, 'found+"-"+g1', 'aaa-a') 'aaa-' should be 'aaa-a'
+('([abc]*)\\1', 'abcabc', 0, 'found+"-"+g1', 'abcabc-abc')
+=== grouping error ('([abc]*)\\1', 'abcabc', 0, 'found+"-"+g1', 'abcabc-abc') 'abcabc-' should be 'abcabc-abc'
+('(a)(b)c|ab', 'ab', 0, 'found+"-"+g1+"-"+g2', 'ab-None-None')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 1097, in compile
+    if stack[-1][0].name == '(':
+AttributeError: attribute-less object
+('(a)+x', 'aaax', 0, 'found+"-"+g1', 'aaax-a')
+=== grouping error ('(a)+x', 'aaax', 0, 'found+"-"+g1', 'aaax-a') 'aaax-' should be 'aaax-a'
+('([ac])+x', 'aacx', 0, 'found+"-"+g1', 'aacx-c')
+=== grouping error ('([ac])+x', 'aacx', 0, 'found+"-"+g1', 'aacx-c') 'aacx-' should be 'aacx-c'
+('([^/]*/)*sub1/', 'd:msgs/tdir/sub1/trial/away.cpp', 0, 'found+"-"+g1', 'd:msgs/tdir/sub1/-tdir/')
+=== grouping error ('([^/]*/)*sub1/', 'd:msgs/tdir/sub1/trial/away.cpp', 0, 'found+"-"+g1', 'd:msgs/tdir/sub1/-tdir/') 'd:msgs/tdir/sub1/-' should be 'd:msgs/tdir/sub1/-tdir/'
+('([^.]*)\\.([^:]*):[T ]+(.*)', 'track1.title:TBlah blah blah', 0, 'found+"-"+g1+"-"+g2+"-"+g3', 'track1.title:TBlah blah blah-track1-title-Blah blah blah')
+=== Failed incorrectly ('([^.]*)\\.([^:]*):[T ]+(.*)', 'track1.title:TBlah blah blah', 0, 'found+"-"+g1+"-"+g2+"-"+g3', 'track1.title:TBlah blah blah-track1-title-Blah blah blah')
+('([^N]*N)+', 'abNNxyzN', 0, 'found+"-"+g1', 'abNNxyzN-xyzN')
+=== grouping error ('([^N]*N)+', 'abNNxyzN', 0, 'found+"-"+g1', 'abNNxyzN-xyzN') 'abNNxyzN-' should be 'abNNxyzN-xyzN'
+('([^N]*N)+', 'abNNxyz', 0, 'found+"-"+g1', 'abNN-N')
+=== grouping error ('([^N]*N)+', 'abNNxyz', 0, 'found+"-"+g1', 'abNN-N') 'abNN-' should be 'abNN-N'
+('([abc]*)x', 'abcx', 0, 'found+"-"+g1', 'abcx-abc')
+=== grouping error ('([abc]*)x', 'abcx', 0, 'found+"-"+g1', 'abcx-abc') 'abcx-' should be 'abcx-abc'
+('([abc]*)x', 'abc', 1)
+('([xyz]*)x', 'abcx', 0, 'found+"-"+g1', 'x-')
+('(a)+b|aac', 'aac', 0, 'found+"-"+g1', 'aac-None')
+*** Unexpected error ***
+Traceback (innermost last):
+  File "../Lib/test/test_re.py", line 19, in ?
+    obj=re.compile(pattern)
+  File "../Lib/re.py", line 1097, in compile
+    if stack[-1][0].name == '(':
+AttributeError: attribute-less object