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BUG: which-func-mode
From: |
Le Wang |
Subject: |
BUG: which-func-mode |
Date: |
Tue, 04 Mar 2003 19:36:41 -0500 |
User-agent: |
KNode/0.7.1 |
Hi,
I just spend a few hours debugging a situation where something was modifying
my buffer-list behind my back, whenever I had multiple windows in the same
frame.
It turned out that `which-func-mode' was using `walk-windows' to update the
mode-lines in all windows. It selects each window and forces a mode-line
update in it. But by selecting the window, it silently disrupts the
`buffer-list'. This is the bug.
If I've failed to make the problem clear for everyone, please let me know and
I'll provide a step by step test case. But I think this one should be fairly
obvious.
This is the patch I've come up with, again, please provide corrections where
required:
*** /usr/local/share/emacs/21.3.50/lisp/which-func.el Tue Feb 4 19:31:41 2003
--- /tmp/buffer-content-5706yVU Tue Mar 4 19:31:46 2003
***************
*** 158,176 ****
(defun which-func-update-1 (window)
"Update the Which-Function mode display for window WINDOW."
! (save-selected-window
! (select-window window)
! ;; Update the string containing the current function.
! (when which-func-mode
! (condition-case info
! (progn
! (setq which-func-current (or (which-function) which-func-unknown))
! (unless (string= which-func-current which-func-previous)
! (force-mode-line-update)
! (setq which-func-previous which-func-current)))
! (error
! (which-func-mode -1)
! (error "Error in which-func-update: %s" info))))))
;;;###autoload
(defalias 'which-func-mode 'which-function-mode)
--- 158,175 ----
(defun which-func-update-1 (window)
"Update the Which-Function mode display for window WINDOW."
! (set-buffer (window-buffer window))
! ;; Update the string containing the current function.
! (when which-func-mode
! (condition-case info
! (progn
! (setq which-func-current (or (which-function) which-func-unknown))
! (unless (string= which-func-current which-func-previous)
! (force-mode-line-update)
! (setq which-func-previous which-func-current)))
! (error
! (which-func-mode -1)
! (error "Error in which-func-update: %s" info)))))
;;;###autoload
(defalias 'which-func-mode 'which-function-mode)
Diff finished at Tue Mar 4 19:31:46
--
Le
- BUG: which-func-mode,
Le Wang <=
- Re: BUG: which-func-mode, Stefan Monnier, 2003/03/10
- Re: BUG: which-func-mode, Richard Stallman, 2003/03/11
- Re: BUG: which-func-mode, Stefan Monnier, 2003/03/11
- Re: BUG: which-func-mode, Richard Stallman, 2003/03/13
- Re: BUG: which-func-mode, Stefan Monnier, 2003/03/14
- Re: BUG: which-func-mode, Richard Stallman, 2003/03/16
- Re: BUG: which-func-mode, Stefan Monnier, 2003/03/16
- Re: BUG: which-func-mode, Robert J. Chassell, 2003/03/16
- Re: BUG: which-func-mode, Stefan Monnier, 2003/03/16
- Re: BUG: which-func-mode, Robert J. Chassell, 2003/03/17