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Re: regexps and locales

From: Chet Ramey
Subject: Re: regexps and locales
Date: Tue, 1 Feb 2005 12:33:11 -0500

> However it does seem that the pattern "?" should only match
> one-character-long filenames, whereas currently in bash it also
> matches any one-byte-long filename.

Isn't a one-byte-long filename still a valid filename?  As far as I know,
as long as you can get a one-byte filename created, readdir will return
it, and `?' should match it.

> > any file, even if POSIXLY_CORRECT is set.  I think the POSIX
> > specification says it should only match those files whose names are
> > valid sequences of characters according to the current locale.  For
> > instance, when using a UTF-8 locale, it should not match the file
> > whose name is the output of "echo -e \\351".

I don't think Posix says that; it says that `?' matches `a character'.  If
you have a filename returned by readdir, and you're in a multibyte locale,
`?' will match a character, wide or not.

> >   touch $(echo -e \\351)

I was never able to get this to actually create a file, by the way, whether
or not I had specified a multibyte locale, using MacOS X.


``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
Chet Ramey, ITS, CWRU    address@hidden    http://tiswww.tis.cwru.edu/~chet/

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