From: Alan Mackenzie <acm@muc.de>
To: Miles Bader <miles@gnu.org>
Cc: Stefan Monnier <monnier@iro.umontreal.ca>,
Drew Adams <drew.adams@oracle.com>,
emacs-devel@gnu.org
Subject: Re: Bug with S-Tab in keymaps
Date: Wed, 7 May 2008 08:24:52 +0000 [thread overview]
Message-ID: <20080507082452.GA2497@muc.de> (raw)
In-Reply-To: <87d4nzdo1m.fsf@catnip.gol.com>
'Morning, Miles!
On Wed, May 07, 2008 at 08:13:09AM +0900, Miles Bader wrote:
> Alan Mackenzie <acm@muc.de> writes:
> > here's an embryonic `canonicalize-event' (note the American spelling
> > ;-). It works, e.g. for
> Why all the mucking about with symbols?! [E.g. 'C-M-u ]
My main point is that there should BE a standard way of representing key
sequences. At the moment there is not. So that if I type <shift>-<tab>
on my keyboard, function-key-map turns this into #x2000009. `lookup-key'
then fails to find the binding on the symbol 'S-tab in a keymap. This is
a bug.
Whether the standard I tentatively proposed is the right one or not can
be debated. I'd appreciate people agreeing with me that a standard is
wanted.
> Why not use a representation that actually works with emacs like
> '(control meta u)?
What do you mean? Symbols actually work with Emacs very well.
For the specific instance you give, I actually proposed a number:
#x8000015 = ?\C-u + the meta bit.
But I still think 'C-M-up is superior to '(control meta up). It takes
less space, and (eq sym 'C-M-up) is faster than (equal sym '(control meta
up)). Also, events are represented as symbols at the moment, so why
change this to a list?
Of course, if the speed of looking up keys were a problem (it's not) we
could use an obarray.
The mucking about with symbols in my `canonicalize-event' only needs to
be twice per event per key lookup (and when the binding is made, of
course).
> Thanks,
> -Miles
--
Alan Mackenzie (Nuremberg, Germany).
next prev parent reply other threads:[~2008-05-07 8:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-05 14:11 Bug with S-Tab in keymaps Alan Mackenzie
2008-05-05 18:07 ` Stefan Monnier
2008-05-05 20:40 ` Drew Adams
2008-05-06 0:46 ` Stefan Monnier
2008-05-05 20:54 ` Alan Mackenzie
2008-05-05 20:46 ` Lennart Borgman (gmail)
2008-05-05 21:00 ` Drew Adams
2008-05-06 21:26 ` Alan Mackenzie
2008-05-06 23:13 ` Miles Bader
2008-05-07 8:24 ` Alan Mackenzie [this message]
2008-05-07 15:17 ` Stefan Monnier
2008-05-06 17:08 ` Drew Adams
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