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bug#583: Use XDG basedir spec for configuration files?
From: |
Sven Joachim |
Subject: |
bug#583: Use XDG basedir spec for configuration files? |
Date: |
Wed, 11 Sep 2019 11:21:12 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
On 2019-08-31 14:51 -0700, Paul Eggert wrote:
> Glenn Morris wrote:
>> I guess user-emacs-directory is being set at build time, not run time.
>
> Thanks for reporting that. I installed the attached to fix it. I plan
> to follow up soon on the other issues raised here.
FWIW, this patch broke auto-save-list-file-prefix, at least when
user-emacs-directory is "~/.emacs.d/". See bug #37354.
,----
| auto-save-list-file-prefix is a variable defined in ‘startup.el’.
| Its value is "auto-save-list/.saves-"
| Original value was
| "~/.emacs.d/auto-save-list/.saves-"
`----
Cheers,
Sven
> From 2befb4f0a1494f699f56215d5f28ba055663d881 Mon Sep 17 00:00:00 2001
> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Sat, 31 Aug 2019 14:47:04 -0700
> Subject: [PATCH] Calculate user-emacs-directory on startup
>
> Problem reported by Glenn Morris (Bug#583#56).
> * lisp/startup.el (startup--xdg-config-default): New constant.
> (startup--xdg-config-home-emacs): New var.
> (startup--xdg-or-homedot): New function.
> (normal-top-level): Use it to set user-emacs-directory early on.
> (command-line): Also use it to determine the startup init directory.
> * lisp/subr.el (user-emacs-directory): Just initialize to nil.
> ---
> lisp/startup.el | 51 +++++++++++++++++++++++++++++++++++++------------
> lisp/subr.el | 14 ++------------
> 2 files changed, 41 insertions(+), 24 deletions(-)
>
> diff --git a/lisp/startup.el b/lisp/startup.el
> index c1e429b8db..a16db242da 100644
> --- a/lisp/startup.el
> +++ b/lisp/startup.el
> @@ -490,6 +490,27 @@ normal-top-level-add-to-load-path
> (when tail
> (setcdr tail (append (mapcar 'expand-file-name dirs) (cdr tail))))))
>
> +;; The default location for XDG-convention Emacs init files.
> +(defconst startup--xdg-config-default "~/.config/emacs/")
> +;; The location for XDG-convention Emacs init files.
> +(defvar startup--xdg-config-home-emacs)
> +
> +;; Return the name of the init file directory for Emacs, assuming
> +;; XDG-DIR is the XDG location and USER-NAME is the user name.
> +;; If USER-NAME is nil or "", use the current user.
> +;; Prefer the XDG location unless it does does not exist and the
> +;; .emacs.d location does exist.
> +(defun startup--xdg-or-homedot (xdg-dir user-name)
> + (if (file-exists-p xdg-dir)
> + xdg-dir
> + (let ((emacs-d-dir (concat "~" user-name
> + (if (eq system-type 'ms-dos)
> + "/_emacs.d/"
> + "/.emacs.d/"))))
> + (if (file-exists-p emacs-d-dir)
> + emacs-d-dir
> + xdg-dir))))
> +
> (defun normal-top-level ()
> "Emacs calls this function when it first starts up.
> It sets `command-line-processed', processes the command-line,
> @@ -499,6 +520,14 @@ normal-top-level
> (message internal--top-level-message)
> (setq command-line-processed t)
>
> + (setq startup--xdg-config-home-emacs
> + (let ((xdg-config-home (getenv-internal "XDG_CONFIG_HOME")))
> + (if xdg-config-home
> + (concat xdg-config-home "/emacs/")
> + startup--xdg-config-default)))
> + (setq user-emacs-directory
> + (startup--xdg-or-homedot startup--xdg-config-home-emacs nil))
> +
> ;; Look in each dir in load-path for a subdirs.el file. If we
> ;; find one, load it, which will add the appropriate subdirs of
> ;; that dir into load-path. This needs to be done before setting
> @@ -1167,19 +1196,17 @@ command-line
> :error))))
>
> ;; Calculate the name of the Emacs init directory.
> - ;; This is typically equivalent to ~/.config/emacs if the user is
> - ;; following the XDG convention, and is ~INIT-FILE-USER/.emacs.d
> - ;; on other systems.
> - (setq xdg-dir (concat (or (getenv "XDG_CONFIG_HOME")
> - (concat "~" init-file-user "/.config"))
> - "/emacs/"))
> + ;; This is typically ~INIT-FILE-USER/.config/emacs unless the user
> + ;; is following the ~INIT-FILE-USER/.emacs.d convention.
> + (setq xdg-dir startup--xdg-config-home-emacs)
> (setq startup-init-directory
> - (if (file-exists-p xdg-dir)
> - xdg-dir
> - (let ((emacs-d-dir (concat "~" init-file-user "/.emacs.d/")))
> - (if (file-exists-p emacs-d-dir)
> - emacs-d-dir
> - xdg-dir))))
> + (if (or (zerop (length init-file-user))
> + (and (eq xdg-dir user-emacs-directory)
> + (not (eq xdg-dir startup--xdg-config-default))))
> + user-emacs-directory
> + ;; The name is not obvious, so access more directories to calculate
> it.
> + (setq xdg-dir (concat "~" init-file-user "/.config/emacs/"))
> + (startup--xdg-or-homedot xdg-dir init-file-user)))
>
> ;; Load the early init file, if found.
> (startup--load-user-init-file
> diff --git a/lisp/subr.el b/lisp/subr.el
> index 566a3fc758..cf6fb108e9 100644
> --- a/lisp/subr.el
> +++ b/lisp/subr.el
> @@ -2938,18 +2938,8 @@ temp-buffer-setup-hook
> mode.")
>
> (defconst user-emacs-directory
> - (let ((config-dir (concat (or (getenv-internal "XDG_CONFIG_HOME")
> - "~/.config")
> - "/emacs/")))
> - (if (file-exists-p config-dir)
> - config-dir
> - (let ((emacs-d-dir (if (eq system-type 'ms-dos)
> - ;; MS-DOS cannot have initial dot.
> - "~/_emacs.d/"
> - "~/.emacs.d/")))
> - (if (file-exists-p emacs-d-dir)
> - emacs-d-dir
> - config-dir))))
> + ;; The value does not matter since Emacs sets this at startup.
> + nil
> "Directory beneath which additional per-user Emacs-specific files are
> placed.
> Various programs in Emacs store information in this directory.
> Note that this should end with a directory separator.
> --
> 2.17.1