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Recompile pattern if (?x) flag was found inside the pattern during the

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first scan.  Closes bug #115040.
This commit is contained in:
Fredrik Lundh 2000-10-03 19:22:26 +00:00
parent 4ae8ef84da
commit d11b5e54f0
2 changed files with 9 additions and 2 deletions
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5
Lib/sre_parse.py
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@ -593,6 +593,11 @@ def parse(str, flags=0, pattern=None):
# p.dump() # p.dump()
if not (flags & SRE_FLAG_VERBOSE) and p.pattern.flags & SRE_FLAG_VERBOSE:
# the VERBOSE flag was switched on inside the pattern. to be
# on the safe side, we'll parse the whole thing again...
return parse(str, p.pattern.flags)
return p return p
def parse_template(source, pattern): def parse_template(source, pattern):

6
Lib/test/re_tests.py
View file

@ -612,9 +612,11 @@ xyzabc
(r'(([a-z]+):)?([a-z]+)$', 'smil', SUCCEED, 'g1+"-"+g2+"-"+g3', 'None-None-smil'), (r'(([a-z]+):)?([a-z]+)$', 'smil', SUCCEED, 'g1+"-"+g2+"-"+g3', 'None-None-smil'),
# bug 111869 (PRE/PCRE fails on this one, SRE doesn't) # bug 111869 (PRE/PCRE fails on this one, SRE doesn't)
(r'.*d', 'abc\nabd', SUCCEED, 'found', 'abd'), (r'.*d', 'abc\nabd', SUCCEED, 'found', 'abd'),
# bug 112468 # bug 112468: various expected syntax errors
('(', '', SYNTAX_ERROR), ('(', '', SYNTAX_ERROR),
('[\\41]', '!', SUCCEED, 'found', '!'), ('[\\41]', '!', SUCCEED, 'found', '!'),
# bug 115618 # bug 115040: rescan if flags are modified inside pattern
(r' (?x)foo ', 'foo', SUCCEED, 'found', 'foo'),
# bug 115618: negative lookahead
(r'(?<!abc)(d.f)', 'abcdefdof', SUCCEED, 'found', 'dof'), (r'(?<!abc)(d.f)', 'abcdefdof', SUCCEED, 'found', 'dof'),
] ]