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Re: installing emacs and X11 on OS X
From: |
Eli Zaretskii |
Subject: |
Re: installing emacs and X11 on OS X |
Date: |
Tue, 29 Oct 2002 07:55:47 +0200 (IST) |
On 28 Oct 2002, Thomas F. Burdick wrote:
> > People will abuse less if they have less opportunities for abuse.
>
> I guess so long as a new facility for determining what environment
> you're working in, is introduced, this is a fine decision. I imagine,
> though, that any time you give people the ability to ask what
> look-and-feel environment they're operating in, they'll abuse it to
> test for display features.
There's a difference. Abuse because there's no alternative means to do
what you want is more likely and more justified than if the means to do
it right do exist.
> What's there is good, but more is needed. I guess that possiblity is
> part of why window-system was depricated, instead of removed, huh?
It wasn't removed simply because such abrupt changes are bad practice,
they hurt back-compatibility too much.
> I think what's needed is the ability to ask run-time questions like
> the above. So either a look-and-feel-p predicate, or a series of
> display-look&feel-*-p predicates, so I could write code like this:
>
> (when (display-look&feel-carbon-p)
> (setup-carbon-look&feel))
Yes, this sounds to me like a good idea. Please suggest this on
emacs-devel.
> (when (display-look&feel-x11-p)
> ;; Things like mouse-2 for paste
> (setup-x11-look&feel))
>
> (when (display-look&feel-mswin-p)
> ;; No mouse-2 for pasting, use cua-mode instead
> (setup-mswin-look&feel))
This is IMHO not such a good idea. If there's a need to know something
about the functionality of mouse-2, or about the lack thereof, there
should be a specific predicate for that. The very reason that you needed
to put a comment explaining why X11 differs from MS-Windows is an
evidence that the predicate is going to be a grabbag of indicators for
support of several unrelated features, features that are not explicitly
obvious from the predicate name. If we want to dostinguish between
2-button and 3-button Emacs, let's do that explicitly, let's not hide
behind some look and feel.
Re: installing emacs and X11 on OS X, Hugo Wolf, 2002/10/23
Re: installing emacs and X11 on OS X, John Paul Wallington, 2002/10/24
Re: installing emacs and X11 on OS X, Hugo Wolf, 2002/10/28
Re: installing emacs and X11 on OS X, Thomas F. Burdick, 2002/10/28
- Re: installing emacs and X11 on OS X,
Eli Zaretskii <=
Re: installing emacs and X11 on OS X, Hugo Wolf, 2002/10/29
Re: installing emacs and X11 on OS X, Stefan Monnier <address@hidden>, 2002/10/29