Subject: Re: bug#63469: 29.0.90; project.el doesn't add menu-bar entries

From: Juri Linkov <[email-masked]>
Date: Thu, 25 May 2023 09:29:49 +0300

>> I see no way to set the same project name both for
>> non-file and file buffers.
>
> Please try the patch below. It might have non-negligible effect on
> performance though. Please try and report back.
>
> diff --git a/lisp/progmodes/project.el b/lisp/progmodes/project.el
> index 7c51778d5d4..1494665d565 100644
> --- a/lisp/progmodes/project.el
> +++ b/lisp/progmodes/project.el
> @@ -816,8 +816,8 @@ project-buffers
>          (push buf bufs)))
>      (nreverse bufs)))
>
> -(cl-defmethod project-name ((_project (head vc)))
> -  (or project-vc-name
> +(cl-defmethod project-name ((project (head vc)))
> +  (or (project--value-in-dir 'project-vc-name (project-root project))
>        (cl-call-next-method)))

Thanks, I confirm this uses project-vc-name from dir-locals in non-file buffers.

>> The standard solution is just to use e.g.:
>> ;;;###autoload(put 'compilation-directory 'safe-local-variable 'stringp)
>
> Huh, so the attribute :safe only makes proper sense for preloaded packages
> and autoloaded defcustom forms (which are discouraged anyway).
>
> Do you want to write a patch for all those vars in project.el? It will
> probably make sense to push it to emacs-29.

With this patch the problem is solved.  I can push it to emacs-29.

diff --git a/lisp/progmodes/project.el b/lisp/progmodes/project.el
index 7c51778d5d4..8b5a1abf900 100644
--- a/lisp/progmodes/project.el
+++ b/lisp/progmodes/project.el
@@ -412,8 +412,8 @@ project-vc
 
 (defcustom project-vc-ignores nil
   "List of patterns to add to `project-ignores'."
-  :type '(repeat string)
-  :safe #'listp)
+  :type '(repeat string))
+;;;###autoload(put 'project-vc-ignores 'safe-local-variable #'listp)
 
 (defcustom project-vc-merge-submodules t
   "Non-nil to consider submodules part of the parent project.
@@ -422,14 +422,14 @@ project-vc-merge-submodules
 you might have to restart Emacs to see the effect."
   :type 'boolean
   :version "28.1"
-  :package-version '(project . "0.2.0")
-  :safe #'booleanp)
+  :package-version '(project . "0.2.0"))
+;;;###autoload(put 'project-vc-merge-submodules 'safe-local-variable #'booleanp)
 
 (defcustom project-vc-include-untracked t
   "When non-nil, the VC-aware project backend includes untracked files."
   :type 'boolean
-  :version "29.1"
-  :safe #'booleanp)
+  :version "29.1")
+;;;###autoload(put 'project-vc-include-untracked 'safe-local-variable #'booleanp)
 
 (defcustom project-vc-name nil
   "When non-nil, the name of the current VC-aware project.
@@ -439,8 +439,8 @@ project-vc-name
   :type '(choice (const :tag "Default to the base name" nil)
                  (string :tag "Custom name"))
   :version "29.1"
-  :package-version '(project . "0.9.0")
-  :safe #'stringp)
+  :package-version '(project . "0.9.0"))
+;;;###autoload(put 'project-vc-name 'safe-local-variable #'stringp)
 
 ;; Not using regexps because these wouldn't work in Git pathspecs, in
 ;; case we decide we need to be able to list nested projects.
@@ -467,8 +467,8 @@ project-vc-extra-root-markers
 variables, such as `project-vc-ignores' or `project-vc-name'."
   :type '(repeat string)
   :version "29.1"
-  :package-version '(project . "0.9.0")
-  :safe (lambda (val) (and (listp val) (cl-every #'stringp val))))
+  :package-version '(project . "0.9.0"))
+;;;###autoload(put 'project-vc-extra-root-markers 'safe-local-variable (lambda (val) (and (listp val) (cl-every #'stringp val))))
 
 ;; FIXME: Using the current approach, major modes are supposed to set
 ;; this variable to a buffer-local value.  So we don't have access to
@@ -1476,8 +1476,8 @@ project-kill-buffers-display-buffer-list
   :type 'boolean
   :version "29.1"
   :group 'project
-  :package-version '(project . "0.8.2")
-  :safe #'booleanp)
+  :package-version '(project . "0.8.2"))
+;;;###autoload(put 'project-kill-buffers-display-buffer-list 'safe-local-variable #'booleanp)
 
 (defun project--buffer-check (buf conditions)
   "Check if buffer BUF matches any element of the list CONDITIONS.