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bug#59813: 29.0.60; function-history: M-. fails to jump to defun if stra
From: |
Naofumi Yasufuku |
Subject: |
bug#59813: 29.0.60; function-history: M-. fails to jump to defun if straight.el straight-cache-autoloads is enabled |
Date: |
Thu, 15 Dec 2022 02:24:00 +0900 |
Hi Eli,
Eli Zaretskii <eliz@gnu.org> writes:
> I'm not sure I understand the issue, and I'm not familiar with
> straight.el, but if the above somehow prevents the function from being
> loaded, it is expected that M-. will fail. Its ELisp backend works
> only for loaded functions. If you want it to work for functions that
> aren't loaded, you need to manually switch the backend to etags.
>
The function `loadhist--foo-inc' is definitely loaded by autoload,
but M-. fails to find defun in the source file loadhist--foo.el.
> So if the above scenario worked with Emacs 28, I suggest to check
> whether the function was being loaded with Emacs 28.
I've tried to check the state of load-history (both 28 and 29) and
function-history (29-only). The following is the difference between
Emacs 28 and 29:
;;==========================================
;; Emacs 28.2.50
;; Step 1: Create ~/.emacs.d/site-lisp/loadhist--foo.el
;;------------------------------------------
;; (defun loadhist--foo-inc (x) (1+ x))
;; (provide 'loadhist--foo)
;;------------------------------------------
;; Step 2: emacs -Q
;; Step 3: In *scratch*, M-x eval-buffer
(setq load-path (cons (locate-user-emacs-file "site-lisp") load-path))
(autoload 'loadhist--foo-inc "loadhist--foo")
(message "(loadhist--foo-inc 1): %s" (loadhist--foo-inc 1))
;;------------------------------------------
;; Step 4: Check load-history
(symbol-file 'loadhist--foo-inc 'defun)
=> "/home/naofumi/.emacs.d/site-lisp/loadhist--foo.el"
(let (matches)
(pcase-dolist (`(,file . ,elems) load-history)
(when (rassq 'loadhist--foo-inc elems)
(push (cons file elems) matches)))
(nreverse matches))
=> ((nil (autoload . loadhist--foo-inc))
("/home/naofumi/.emacs.d/site-lisp/loadhist--foo.el" (t . loadhist--foo-inc)
(defun . loadhist--foo-inc) (provide . loadhist--foo)))
;;==========================================
;;==========================================
;; Emacs 29.0.60
;; Step 1: Create ~/.emacs.d/site-lisp/loadhist--foo.el
;;------------------------------------------
;; (defun loadhist--foo-inc (x) (1+ x))
;; (provide 'loadhist--foo)
;;------------------------------------------
;; Step 2: emacs -Q
;; Step 3: In *scratch*, M-x eval-buffer
(setq load-path (cons (locate-user-emacs-file "site-lisp") load-path))
(autoload 'loadhist--foo-inc "loadhist--foo")
(message "(loadhist--foo-inc 1): %s" (loadhist--foo-inc 1))
;;------------------------------------------
;; Step 4: Check load-history and function-history
(symbol-file 'loadhist--foo-inc 'defun)
=> nil
(let (matches)
(pcase-dolist (`(,file . ,elems) load-history)
(when (rassq 'loadhist--foo-inc elems)
(push (cons file elems) matches)))
(nreverse matches))
=> ((nil (defun . loadhist--foo-inc))
("/home/naofumi/.emacs.d/site-lisp/loadhist--foo.el" (defun .
loadhist--foo-inc) (provide . loadhist--foo)))
(get 'loadhist--foo-inc 'function-history)
=> ("/home/naofumi/.emacs.d/site-lisp/loadhist--foo.el" (autoload
"loadhist--foo" nil nil nil))
;;==========================================
Best regaards,
Naofumi