En Thu, 03 Apr 2008 19:20:59 -0300, [EMAIL PROTECTED]
<[EMAIL PROTECTED]> escribió:
> I'm trying to use shlex.split to simulate what would happen in the
> shell. The docs say that it should be as close as possible to the
> posix shell parsing rules.
>
> If you type the following into a posix compliant shell
>
> echo '\?foo'
>
> you get back:
> \?foo
>
> (I've tested this in dash, bash and zsh---all give the same results.)
>
> Now here's what happens in python:
>
> Python 2.5.1 (r251:54863, Mar 7 2008, 03:39:23)
> [GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
>>>> import shlex
>>>> shlex.split("'\?foo'")
> ['\\?foo']
>>>>
>
> I think this is a bug? Or am I just misunderstanding?
The result is a list containing a single string. The string contains 5
characters: a single backslash, a question mark, three letters. The
backslash is the escape character, as in '\n' (a single character,
newline). A backslash by itself is represented (both by repr() and in
string literals) by doubling it.
If you print the value, you'll see a single \:
print shlex.split("'\?foo'")[0]
--
Gabriel Genellina
--
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