GNU bug report logs - #33695
27.0.50; which-function reports wrong imenu information

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From: Alex Branham <alex.branham <at> gmail.com>
To: 33695 <at> debbugs.gnu.org
Subject: bug#33695: [PATCH] Fix which-function reporting outdated information
Date: Thu, 10 Jan 2019 13:55:48 -0600

[Message part 1 (text/plain, inline)]

Hi -

I guess this fell through the cracks with the holidays. Would someone
mind following up with either comments or applying this patch?

Thanks,
Alex

On Wed 19 Dec 2018 at 09:42, Alex Branham <alex.branham <at> gmail.com> wrote:

> Hello -
>
> The following patch fixes `which-function' returning outdated imenu
> information by:
>
> 1. Preferring `add-log-current-defun' over `imenu--index-alist' and
>
> 2. Updating `imenu--index-alist' more aggressively if we fall back to
> it.
>
> Thanks,
> Alex
>
> From a06b1318f23b3f67ed0e1041f50ccea67d46ea48 Mon Sep 17 00:00:00 2001
> From: Alex Branham <alex.branham <at> gmail.com>
> Date: Tue, 11 Dec 2018 08:29:50 -0600
> Subject: [PATCH] which-function: Do not display outdated imenu information
>
> * lisp/progmodes/which-func.el (which-function): Check
>   `add-log-current-defun' before imenu. Update `imenu--index-alist' if
>   needed. Bug #33695
> ---
>  lisp/progmodes/which-func.el | 17 +++++++++--------
>  1 file changed, 9 insertions(+), 8 deletions(-)
>
> diff --git a/lisp/progmodes/which-func.el b/lisp/progmodes/which-func.el
> index 7604be0c25..7cc75e0edb 100644
> --- a/lisp/progmodes/which-func.el
> +++ b/lisp/progmodes/which-func.el
> @@ -272,16 +272,21 @@ which-func-functions
>
>  (defun which-function ()
>    "Return current function name based on point.
> -Uses `which-func-functions', `imenu--index-alist'
> -or `add-log-current-defun'.
> +Uses `which-func-functions', `add-log-current-defun'.
> +or `imenu--index-alist'
>  If no function name is found, return nil."
>    (let ((name
>  	 ;; Try the `which-func-functions' functions first.
>  	 (run-hook-with-args-until-success 'which-func-functions)))
> -
> +    ;; Try using add-log support.
> +    (when (null name)
> +      (setq name (add-log-current-defun)))
>      ;; If Imenu is loaded, try to make an index alist with it.
>      (when (and (null name)
> -	       (boundp 'imenu--index-alist) (null imenu--index-alist)
> +	       (boundp 'imenu--index-alist)
> +               (or (null imenu--index-alist)
> +                   ;; Update if outdated
> +                   (/= (buffer-chars-modified-tick) imenu-menubar-modified-tick))
>  	       (null which-function-imenu-failed))
>        (ignore-errors (imenu--make-index-alist t))
>        (unless imenu--index-alist
> @@ -323,10 +328,6 @@ which-function
>                               (funcall
>                                which-func-imenu-joiner-function
>                                (reverse (cons (car pair) namestack))))))))))))
> -
> -    ;; Try using add-log support.
> -    (when (null name)
> -      (setq name (add-log-current-defun)))
>      ;; Filter the name if requested.
>      (when name
>        (if which-func-cleanup-function
> --
> 2.19.2
>
>
>
> From a06b1318f23b3f67ed0e1041f50ccea67d46ea48 Mon Sep 17 00:00:00 2001
> From: Alex Branham <alex.branham <at> gmail.com>
> Date: Tue, 11 Dec 2018 08:29:50 -0600
> Subject: [PATCH] which-function: Do not display outdated imenu information
>
> * lisp/progmodes/which-func.el (which-function): Check
>   `add-log-current-defun' before imenu. Update `imenu--index-alist' if
>   needed. Bug #33695
> ---
>  lisp/progmodes/which-func.el | 17 +++++++++--------
>  1 file changed, 9 insertions(+), 8 deletions(-)
>
> diff --git a/lisp/progmodes/which-func.el b/lisp/progmodes/which-func.el
> index 7604be0c25..7cc75e0edb 100644
> --- a/lisp/progmodes/which-func.el
> +++ b/lisp/progmodes/which-func.el
> @@ -272,16 +272,21 @@ which-func-functions
>
>  (defun which-function ()
>    "Return current function name based on point.
> -Uses `which-func-functions', `imenu--index-alist'
> -or `add-log-current-defun'.
> +Uses `which-func-functions', `add-log-current-defun'.
> +or `imenu--index-alist'
>  If no function name is found, return nil."
>    (let ((name
>  	 ;; Try the `which-func-functions' functions first.
>  	 (run-hook-with-args-until-success 'which-func-functions)))
> -
> +    ;; Try using add-log support.
> +    (when (null name)
> +      (setq name (add-log-current-defun)))
>      ;; If Imenu is loaded, try to make an index alist with it.
>      (when (and (null name)
> -	       (boundp 'imenu--index-alist) (null imenu--index-alist)
> +	       (boundp 'imenu--index-alist)
> +               (or (null imenu--index-alist)
> +                   ;; Update if outdated
> +                   (/= (buffer-chars-modified-tick) imenu-menubar-modified-tick))
>  	       (null which-function-imenu-failed))
>        (ignore-errors (imenu--make-index-alist t))
>        (unless imenu--index-alist
> @@ -323,10 +328,6 @@ which-function
>                               (funcall
>                                which-func-imenu-joiner-function
>                                (reverse (cons (car pair) namestack))))))))))))
> -
> -    ;; Try using add-log support.
> -    (when (null name)
> -      (setq name (add-log-current-defun)))
>      ;; Filter the name if requested.
>      (when name
>        (if which-func-cleanup-function

[0001-which-function-Do-not-display-outdated-imenu-informa.patch (text/x-patch, attachment)]

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