GNU bug report logs - #19851
25.0.50; package-install-{file,from-buffer} broken

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From: Mark Oteiza <mvoteiza <at> udel.edu>
To: 19851 <at> debbugs.gnu.org
Subject: bug#19851: 25.0.50; package-install-{file,from-buffer} broken
Date: Mon, 15 Jun 2015 19:27:17 -0400

Juri Linkov <juri <at> linkov.net> writes:

>> Found it.  It is from using package-install-file on a directory while
>> saveplace is enabled.  Saveplace gets stuck.  From emacs -Q:
>>
>> 1. mkdir /some/new/dir
>> 2. Evaluate:
>>
>>   (setq-default save-place t)
>>   (require 'saveplace)
>>   (package-initialize)
>>
>> 3. M-x package-install-file RET /some/new/dir RET
>>
>>   "dired-current-directory: No subdir-alist in  *temp*"
>>
>> In order to quit emacs, one has to hack around kill-emacs-hook.
>
> Does this patch fix it for you?
>
> diff --git a/lisp/saveplace.el b/lisp/saveplace.el
> index fe54743..5bbcd79 100644
> --- a/lisp/saveplace.el
> +++ b/lisp/saveplace.el
> @@ -158,6 +158,8 @@ (defun toggle-save-place (&optional parg) ;FIXME: save-place-local-mode!
>  \(setq-default save-place t)"
>    (interactive "P")
>    (if (not (or buffer-file-name (and (derived-mode-p 'dired-mode)
> +                                     (boundp 'dired-subdir-alist)
> +				     dired-subdir-alist
>  				     (dired-current-directory))))
>        (message "Buffer `%s' not visiting a file or directory" (buffer-name))
>      (setq save-place (if parg
> @@ -178,6 +180,8 @@ (defun save-place-to-alist ()
>    ;; will be saved again when Emacs is killed.
>    (or save-place-loaded (load-save-place-alist-from-file))
>    (let* ((directory (and (derived-mode-p 'dired-mode)
> +                         (boundp 'dired-subdir-alist)
> +			 dired-subdir-alist
>  			 (dired-current-directory)))
>  	 (item (or buffer-file-name
>  		   (and directory
> @@ -310,6 +314,8 @@ (defun save-places-to-alist ()
>  	;; save-place checks buffer-file-name too, but we can avoid
>  	;; overhead of function call by checking here too.
>  	(and (or buffer-file-name (and (derived-mode-p 'dired-mode)
> +                                       (boundp 'dired-subdir-alist)
> +				       dired-subdir-alist
>  				       (dired-current-directory)))
>  	     (save-place-to-alist))
>  	(setq buf-list (cdr buf-list))))))
> @@ -331,6 +337,8 @@ (defun save-place-dired-hook ()
>    "Position the point in a Dired buffer."
>    (or save-place-loaded (load-save-place-alist-from-file))
>    (let* ((directory (and (derived-mode-p 'dired-mode)
> +                         (boundp 'dired-subdir-alist)
> +			 dired-subdir-alist
>  			 (dired-current-directory)))
>  	 (cell (assoc (and directory
>  			   (expand-file-name (if (consp directory)

Yes, thank you.

Though, with the recipe I gave here, I get again a trace like what I
pasted when opening with bug.  This appears to be because "pkg-desc" in
package-install-from-buffer() is nil, so then
(package-desc-name nil) is an error

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