Re: Is this correct?

[Kevin Rodgers]

On 2/25/11 11:54 PM, Tim X wrote:
> I'm currently on a big bug fix cycle. Some of the bugs I'm trying to fix
> relate to menus and I've noticed some code which I'm not convinced is
> "correct" based on the documentation. I'd like some
> feedback from others as I suspect it is something I am missing or don't
> understand.
>
> force-mode-line-update has the following documentation -
>
> ,----[ C-h f force-mode-line-update RET ]
> | force-mode-line-update is a compiled Lisp function in `subr.el'.
> |
> | (force-mode-line-update&optional ALL)
> |
> | Force redisplay of the current buffer's mode line and header line.
> | With optional non-nil ALL, force redisplay of all mode lines and
> | header lines.  This function also forces recomputation of the
> | menu bar menus and the frame title.
> |
> | [back]
> `----

Before digging into the details of whether the code implements the behavior
described in the doc string, do we understand the doc string?

* What if the current buffer is not displayed?

* Does ALL mean all buffers?  All windows?  All visible windows?  All frames?
  All visible frames?  Or some other interpretation?

* The menu bar and frame title are frame-local, right?  If so, I think that
  would imply that force-mode-line-update should by default (when ALL is nil)
  update all displayed buffers in the current frame, and should update all
  displayed buffers on all frames (when ALL is non-nil).

--
Kevin Rodgers
Denver, Colorado, USA