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Re: file-readable-p returns t for empty string


From: Andreas Schwab
Subject: Re: file-readable-p returns t for empty string
Date: Wed, 27 Feb 2002 18:07:11 +0100
User-agent: Gnus/5.090005 (Oort Gnus v0.05) Emacs/21.2.50 (ia64-suse-linux)

Kevin Rodgers <address@hidden> writes:

|> Richard Stallman wrote:
|> > 
|> > Eli Zaretskii writes:
|> >     
|> >     That's because all these primitives call expand-file-name internally,
|> >     and expand-file-name returns the buffer's default directory when
|> >     passed an empty string as an argument.
|> > 
|> >     I don't know off the top of my head why does expand-file-name do that.
|> > 
|> > Do you have something better to suggest?
|> 
|> Do file systems actually allow an empty/null file name?  If not, how about
|> signalling an error?

There is no precedence for that in any of the file name
composition/decomposition functions.  They all just operate on the string
value without actually verifying it on the file system.

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
SuSE GmbH, Deutschherrnstr. 15-19, D-90429 N├╝rnberg
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