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Re: Using the same custom file in two different OSes
From: |
Eli Zaretskii |
Subject: |
Re: Using the same custom file in two different OSes |
Date: |
Thu, 17 Jan 2013 19:48:51 +0200 |
> From: "Drew Adams" <drew.adams@oracle.com>
> Date: Thu, 17 Jan 2013 08:57:41 -0800
>
> > > `window-system' has the advantage that it works with older
> > > Emacs releases.
> >
> > Only if you want to support Emacs versions before 21.1.
>
> Fair enough. However, even in the final Emacs 22 release there are _many_
> uses
> of `window-sytem' as a predicate in the Gnu Emacs source code, even though
> `display-graphic-p' was introduced two releases before that.
Old habits die hard.
> Heck, even in the latest Gnu Emacs development source code, to be Emacs 24.3,
> there are still many such "deprecated" uses, AFAICT.
>
> Here is a typical one, in dframe.el:
>
> ;; On a terminal, raise the frame or the user will
> ;; be confused.
> (if (not window-system)
> (select-frame (symbol-value frame-var)))
>
> In case you think dframe.el is a bit exotic, see the basic libraries faces.el
> and frame.el, where there are also several such uses.
We need a better QA, obviously. However, at the time, the core files
were left only with uses which couldn't be easily replaced by some
display-*-p predicate, and inventing a predicate for 1 or 2 uses is
not a good idea.
> And frame.el is the very file where `display-graphic-p' is *defined*. It is
> called only 3 times in that file, while `window-system' seems to be used there
> as a predicate 7 times.
I see only 5 instances, not 7, and it is not clear to me what
display-*-p predicate would be appropriate in their stead.
> Nobody's perfect, of course.
Emacs development certainly isn't.
- Re: Using the same custom file in two different OSes, (continued)
- Re: Using the same custom file in two different OSes, Dani Moncayo, 2013/01/16
- Message not available
- Re: Using the same custom file in two different OSes, Sebastien Vauban, 2013/01/17
- RE: Using the same custom file in two different OSes, Drew Adams, 2013/01/17
- Re: Using the same custom file in two different OSes, Peter Dyballa, 2013/01/17
- Re: Using the same custom file in two different OSes, Dani Moncayo, 2013/01/17
- Re: Using the same custom file in two different OSes, Eli Zaretskii, 2013/01/17
- RE: Using the same custom file in two different OSes, Drew Adams, 2013/01/17
- Re: Using the same custom file in two different OSes, Eli Zaretskii, 2013/01/17
- Re: Using the same custom file in two different OSes, Eli Zaretskii, 2013/01/17
- RE: Using the same custom file in two different OSes, Drew Adams, 2013/01/17
- Re: Using the same custom file in two different OSes,
Eli Zaretskii <=
- RE: Using the same custom file in two different OSes, Drew Adams, 2013/01/17
- Re: Using the same custom file in two different OSes, Eli Zaretskii, 2013/01/17
Re: Using the same custom file in two different OSes, Stefan Monnier, 2013/01/15
Message not available