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Fixed #29132: Updated shlex to work better with punctuation chars in POSIX mode. 

Thanks to Evan_ for the report and patch.
This commit is contained in:
Vinay Sajip 2017-01-15 10:06:52 +00:00
parent 2e1b6ea4b7
commit 61eda7260a
2 changed files with 13 additions and 5 deletions
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10
Lib/shlex.py
View File

@ -232,11 +232,6 @@ class shlex:
break # emit current token
else:
continue
elif self.posix and nextchar in self.quotes:
self.state = nextchar
elif self.posix and nextchar in self.escape:
escapedstate = 'a'
self.state = nextchar
elif self.state == 'c':
if nextchar in self.punctuation_chars:
self.token += nextchar
@ -245,6 +240,11 @@ class shlex:
self._pushback_chars.append(nextchar)
self.state = ' '
break
elif self.posix and nextchar in self.quotes:
self.state = nextchar
elif self.posix and nextchar in self.escape:
escapedstate = 'a'
self.state = nextchar
elif (nextchar in self.wordchars or nextchar in self.quotes
or self.whitespace_split):
self.token += nextchar

8
Lib/test/test_shlex.py
View File

@ -273,6 +273,14 @@ class ShlexTest(unittest.TestCase):
# white space
self.assertEqual(list(s), ['a', '&&', 'b', '||', 'c'])
def testPunctuationWithPosix(self):
"""Test that punctuation_chars and posix behave correctly together."""
# see Issue #29132
s = shlex.shlex('f >"abc"', posix=True, punctuation_chars=True)
self.assertEqual(list(s), ['f', '>', 'abc'])
s = shlex.shlex('f >\\"abc\\"', posix=True, punctuation_chars=True)
self.assertEqual(list(s), ['f', '>', '"abc"'])
def testEmptyStringHandling(self):
"""Test that parsing of empty strings is correctly handled."""
# see Issue #21999