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Re: trouble binding to <next> & <prior>


From: Mirko
Subject: Re: trouble binding to <next> & <prior>
Date: Tue, 8 Jul 2008 05:49:13 -0700 (PDT)
User-agent: G2/1.0

On Jul 7, 4:04 pm, "Lennart Borgman (gmail)"
<address@hidden> wrote:
> Mirko wrote:
> > On Jul 7, 2:09 pm, "Lennart Borgman (gmail)"
> > <address@hidden> wrote:
> >> Mirko wrote:
> >>> On Jul 7, 12:59 pm, address@hidden (Pascal J. Bourguignon)
> >>> wrote:
> >>>> Mirko <address@hidden> writes:
> >>>>> Hello,
> >>>>> I have a following keybinding, parts of which do not work.  In
> >>>>> particular I am trying to bind view-previous-entry to the page-up key
> >>>>> on the standard PC keyboard (using Emacs 22.1).  I used both h-k and h-
> >>>>> l to determine that this key is identified with "<prior>" & <next>".
> >>>>> (defvar iop-alert-mode-map nil
> >>>>>   "Keymap for IOP-alert mode")
> >>>>> (unless iop-alert-mode-map
> >>>>>   (setq iop-alert-mode-map (copy-keymap text-mode-map))
> >>>>>   (define-key iop-alert-mode-map (kbd "<prior>") 'view-previous-entry)
> >>>>>   (define-key iop-alert-mode-map (kbd "<next>") 'view-next-entry)
> >>>>>   (define-key iop-alert-mode-map (kbd "d") 'mark-entry-for-deletion)
> >>>>>   (define-key iop-alert-mode-map "m" 'mark-entry-for-save))
> >>>>> When in a buffer with iop-alert mode, doing h-m gives me the following
> >>>>> output on keybindings:
> >>>>> ... stuff skipped
> >>>>> < n e           Prefix Command
> >>>>> < p r           Prefix Command
> >>>>> < n e x         Prefix Command
> >>>>> < p r i         Prefix Command
> >>>>> < n e x t       Prefix Command
> >>>>> < p r i o       Prefix Command
> >>>>> < n e x t >  view-next-entry
> >>>>> < p r i o r     Prefix Command
> >>>>> < p r i o r >        view-previous-entry
> >>>>> It seems <prior> and <next> are bound to the character sequence
> >>>>> "<prior>" and "<next>".  Pressing those characters will invoke the
> >>>>> commands.  But pressing the Page-up/down keys will not.
> >>>>> Indeed, doing a h-k shows that page-up/down are still bound to scroll
> >>>>> up/down.
> >>>>> What am I doing wrong?
> >>>> emacs-version   --> "22.2.1"
> >>>> (kbd "<prior>") --> [prior]
> >>>> if you don't get this vector with one symbol for (kbd "<prior>"),
> >>>> indeed you have a problem.
> >>>> --
> >>>> __Pascal Bourguignon__                    http://www.informatimago.com/
> >>>> WARNING: This product warps space and time in its vicinity.
> >>> I tried that, and I get exactly as you suggested.
> >>> (kbd "<prior>") --> [prior]
> >>> Mirko
> >> It looks like you have been doing
>
> >>   (define-key iop-alert-mode-map "<prior>" 'view-previous-entry)
>
> >> instead of
>
> >>   (define-key iop-alert-mode-map (kbd "<prior>") 'view-previous-entry)
>
> > Nope.  This is what I have
>
> >  (define-key iop-alert-mode-map (kbd "<prior>") 'view-previous-entry)
>
> > Thanks,
>
> > Mirko
>
> Could you try to re-evaluate the code. Place point inside the defvar and
> do C-M-x (this will just set iop-alert-mode-map to nil again). Then
> place point inside the unless form and do C-M-x again.
>
> Does this correct the keymap?

Yes and no.

Following your instructions to the keystroke, I first set the map to
nil, and then re-assigned it.  And now h-m gives a much saner
response:
<next>          view-next-entry
<prior>         view-previous-entry

(In my defense, I did try restarting emacs and reloading the file,
before starting this topic).

However, h-k on page up and page down still gives:
<next> runs the command scroll-up
  which is an interactive built-in function in `C source code'.
It is bound to C-v, <next>.
(scroll-up &optional arg)

??

Thanks,

Mirko


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