empty .emacs disables which-func-mode

empty .emacs disables which-func-mode

[Stephan Stahl]

Hi.

Using CVS emacs, loading a empty .emacs disables which-func-mode:

emacs -Q
M-x which-func-mode
load empty .emacs
C-x C-f .emacs
now which-fund-mode is disabled.

The reason is that which-func-update catches an error from
imenu--make-index-alist and then disables which-func-mode.

This patch helps but i'm not sure it is the right thing.  Can someone
take a look and comment to this?

Thanks,
Stephan

*** which-func.el Wed Mar  2 12:49:37 2005
--- which-func.el.~1.7.~ Tue Jan 11 10:48:10 2005
***************
*** 251,257 ****
      (when (and (null name)
  	       (boundp 'imenu--index-alist) (null imenu--index-alist)
  	       (null which-function-imenu-failed))
!       (imenu--make-index-alist t)
        (unless imenu--index-alist
  	(make-local-variable 'which-function-imenu-failed)
  	(setq which-function-imenu-failed t)))
--- 251,257 ----
      (when (and (null name)
  	       (boundp 'imenu--index-alist) (null imenu--index-alist)
  	       (null which-function-imenu-failed))
!       (imenu--make-index-alist)
        (unless imenu--index-alist
  	(make-local-variable 'which-function-imenu-failed)
  	(setq which-function-imenu-failed t)))
-- 
Stephan Stahl

Re: empty .emacs disables which-func-mode

[Stephan Stahl]

Just some more information on this:

which-func-mode gets disabled every time which-func-update runs on a
buffer were imenu--make-index-alist does not find anything and throws
an (error "No items suitable for an index found in this buffer").
This error is caught by which-func-mode which then cancel
which-func-mode.

A easy way to reproduce this is:

emacs -Q
C-h v which-function-mode -> nil
M-x which-func-mode
C-h v which-function-mode -> t
load empty .emacs
C-x C-f /.emacs
/.emacs should not exists and is empty..
C-h v which-function-mode -> nil

Stephan

-- 
Stephan Stahl

Re: empty .emacs disables which-func-mode

[Richard Stallman]

It seems plausiuble to me.  Thanks.