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Re: Don't concat directories to file names
From: |
Juanma Barranquero |
Subject: |
Re: Don't concat directories to file names |
Date: |
Fri, 15 Jun 2007 13:21:37 +0200 |
On 6/15/07, Stephen J. Turnbull <address@hidden> wrote:
XEmacs doesn't enforce it (we can't without imposing a gratuitous
incompatibility, since until now Emacs hasn't really had the concept),
Aha.
but the variable `user-init-directory' is available to any library
that wants an Emacs-specific place to put things. This is normally
initialized to "~/.xemacs" by startup.el.
Then the recently introduced `user-emacs-directory' should be renamed
to `user-init-directory', or aliased, I think (but it doesn't make
much sense to alias a just created var). The variable currently must
end with a directory separator, but that could be fixed.
But all in all, what I'm interested is having a public function so
modules that currently do
(defvar my-module-setup-file "~/.my-module-data")
or
(defvar my-module-setup-file
(cond ((file-exists-p "~/.my-module-data") "~/.my-module-data")
((file-directory-p "~/.emacs.d/" "~/.emacs.d/my-module-setup"))
(t ...)))
can be easily transformed to
(defvar my-module-setup-file
(user-emacs-file "my-module-data" ; back-compatible
"my-module-setup" ; optional, default to above
))
i.e. (it's a reworked version):
(defun user-emacs-file (name &optional new-name)
"Convert NAME to an absolute per-user Emacs-specific path.
If \"~/NAME\" exists, or `user-emacs-directory' is nil, return \"~/NAME\".
Else, return \"`user-emacs-directory'/NEW-NAME\", or /NAME if NEW-NAME is nil."
(convert-standard-filename
(let ((at-home (expand-file-name name (concat "~" init-file-user))))
(if (or (file-readable-p at-home)
(null user-emacs-directory))
at-home
(or (file-accessible-directory-p (directory-file-name
user-emacs-directory))
(progn (make-directory user-emacs-directory) t) ;; don't
catch errors
(expand-file-name (or new-name name) user-emacs-directory))))))
That function makes use of `user-emacs-directory' (that'd be
`user-init-directory', in XEmacs); uses `convert-standard-filename'
and, as requested, creates the ~/.emacs.d (~/.xemacs) directory on the
fly.
People wanting to use the same setup files in X?Emacs will have to
make user-(emacs|init)-directory point to the right place, or perhaps
set it to nil (and then `user-emacs-file' defers to ~/ and does not
try to create any dir).
WDYT?
Juanma
- Don't concat directories to file names, Richard Stallman, 2007/06/13
- Re: Don't concat directories to file names, Juanma Barranquero, 2007/06/14
- Re: Don't concat directories to file names, Juanma Barranquero, 2007/06/15
- Re: Don't concat directories to file names, Stephen J. Turnbull, 2007/06/15
- Re: Don't concat directories to file names,
Juanma Barranquero <=
- Re: Don't concat directories to file names, Stephen J. Turnbull, 2007/06/15
- Re: Don't concat directories to file names, Juanma Barranquero, 2007/06/15
- Re: Don't concat directories to file names, Stephen J. Turnbull, 2007/06/15
- Re: Don't concat directories to file names, Stefan Monnier, 2007/06/15
- Re: Don't concat directories to file names, Miles Bader, 2007/06/15
- Re: Don't concat directories to file names, Juanma Barranquero, 2007/06/15
- Re: Don't concat directories to file names, Miles Bader, 2007/06/15
- Re: Don't concat directories to file names, Juanma Barranquero, 2007/06/15
- Re: Don't concat directories to file names, Stefan Monnier, 2007/06/15
- Re: Don't concat directories to file names, Juanma Barranquero, 2007/06/15