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`concat' a dir and a file (was: Strange `file-name-sans-extension' behav
From: |
Stefan Monnier |
Subject: |
`concat' a dir and a file (was: Strange `file-name-sans-extension' behavior ) |
Date: |
Fri, 16 Aug 2002 13:17:32 -0400 |
> > The directory it uses is the one that was in the argument file name.
> > If it was valid there, it should be equally valid in the result.
> > If it is not valid in the result, I guess it was not valid in
> > the argument.
>
> The problem is the slash you append to the directory if it doesn't
> end in a slash.
>
> I don't see any code in file-name-sans-extension to append a slash to
> the directory name. It gets the directory name with
> file-name-directory and uses it without further change.
>
> Where is the slash appended?
The `Subject:' had not been updated, so it was misleading.
The discussion is about whether or not we need a new function
that is like expand-file-name but does not necessarily return
an absolute file name. Currently when you need to combine a
relative dir with a file name, you need to use
(concat (file-name-as-directory foo) bar), but the fact that `concat'
works for this is purely accidental (and might not even be always true
for currently supported systems, according to Eli).
I've sometimes tried to use
(let ((default-directory nil)) (expand-file-name bar foo))
or
(let ((default-directory "")) (expand-file-name bar foo))
but it prepends "/" or "./" to the result.
Stefan
- Re: Strange `file-name-sans-extension' behavior, Stefan Monnier, 2002/08/09
- Re: Strange `file-name-sans-extension' behavior, Richard Stallman, 2002/08/10
- Re: Strange `file-name-sans-extension' behavior, Stefan Monnier, 2002/08/12
- Re: Strange `file-name-sans-extension' behavior, Eli Zaretskii, 2002/08/12
- Re: Strange `file-name-sans-extension' behavior, Andreas Schwab, 2002/08/12
- Re: Strange `file-name-sans-extension' behavior, Richard Stallman, 2002/08/13
- Re: Strange `file-name-sans-extension' behavior, Eli Zaretskii, 2002/08/14
- Re: Strange `file-name-sans-extension' behavior, Richard Stallman, 2002/08/14
- Re: Strange `file-name-sans-extension' behavior, Eli Zaretskii, 2002/08/15
- Re: Strange `file-name-sans-extension' behavior, Richard Stallman, 2002/08/15
- `concat' a dir and a file (was: Strange `file-name-sans-extension' behavior ),
Stefan Monnier <=
- Re: `concat' a dir and a file (was: Strange `file-name-sans-extension' behavior ), Richard Stallman, 2002/08/17
- Re: `concat' a dir and a file (was: Strange `file-name-sans-extension' behavior ), Eli Zaretskii, 2002/08/18
- Re: `concat' a dir and a file (was: Strange `file-name-sans-extension' behavior ), Stefan Monnier, 2002/08/19
- Re: `concat' a dir and a file (was: Strange `file-name-sans-extension' behavior ), Richard Stallman, 2002/08/19
- Re: `concat' a dir and a file (was: Strange `file-name-sans-extension' behavior ), Eli Zaretskii, 2002/08/20
- Re: Strange `file-name-sans-extension' behavior, Richard Stallman, 2002/08/12