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Article #189195

how to do keysysms for Emacs under X ?

#189195
From: Paul Barton-Davis
Date: Wed, 10 Apr 1991 20:10
49 lines
2966 bytes
A day or 2 ago, I asked about emacs' X interface and its handling of
keysyms. Since that time, it has become clear that *one* way to handle
this issue is to follow the lead of other X clients, and use
resources. This in turn leads to another question, below. Before I go 
on, however, this should be considered an open call for all those
who have and/or are working on the v19 X interface, since I do not
want to spend much time working on this if an attempt to do something
similar is already in place. If so, I will use a quick an dirty fix
rather than on of the ideas mapped out below.

First, a premise: emacs should not allow dynamic remapping of the
string returned by XLookupString() from the lisp level. You may
disagree with me about this - if so, I'd like to hear your reasons.

Second, my initial guess at the solution is for emacs to use the same
interface as everyone else: resources. Hence, the following might be
a legal .Xresources (or .Xdefaults) entry:

Emacs.Translations: #override \
<Key>F1: string ("^[[1") \
<Key>Insert: string ("^[xoverwrite-mode) \
<Key>KP_1: string ("^[[123)

Emacs would use the relevant X calls to get the mappings, and then
call XRebindKeysym to install them into the area accessed by
XLookupString. 

Donn Cave <donn@milton.u.washington.edu>suggested that it would be
even better to allow:

	<Key>Select: set-mark()

but noted that this would involve a lot more work, which is perhaps
an understatement. Personnaly, I don't favor this approach. Emacs
already has extensive facilities to remap particular key sequences
to functions, and there's little point duplicating them in an
X-specific layer. Also, the first approach would still allow the
easy provision of an elisp primitive like x-rebind-keysym, if people
really insisted on having access to this layer from elisp.

So, emacs X hackers and users and designers ? Is something like this
already being done ? Is this the right way ? Should I start yesterday
or next year ? Thoughts please ...



-- 
Paul Barton-Davis			<pauld@cs.washington.edu>
UW Computer Science Lab		``to shatter tradition makes us feel free''
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From: pauld@cs.washington.edu (Paul Barton-Davis)
Newsgroups: gnu.emacs.help
Subject: how to do keysysms for Emacs under X ?
Message-ID: <1991Apr10.201055.3362@beaver.cs.washington.edu>
Date: 10 Apr 91 20:10:55 GMT
Sender: news@beaver.cs.washington.edu (USENET News System)
Reply-To: pauld@cs.washington.edu (Paul Barton-Davis)
Distribution: gnu
Organization: Computer Science & Engineering, U. of Washington, Seattle
Lines: 49
Originator: pauld@stowe.cs.washington.edu