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Re: [Emacs-diffs] xwidget updated (1d8b8a2 -> 5f46725)

From: Ulrich Mueller
Subject: Re: [Emacs-diffs] xwidget updated (1d8b8a2 -> 5f46725)
Date: Mon, 29 Dec 2014 14:46:04 +0100

>>>>> On Mon, 29 Dec 2014, joakim  wrote:

>> 3) A few places (for example, xdisp.c:handle_single_display_spec)
>> process xwidget display elements even on non-GUI frames -- does
>> that mean xwidget.c will be compiled even in --without-x
>> configurations of Emacs?  If not, you need to condition that code
>> on HAVE_WINDOW_SYSTEM, like we do with images, for example.

> No the code shouldn't be compiled  if we dont
> HAVE_WINDOW_SYSTEM. Thanks for the catch!

Currently compilation in the xwidget branch also fails when configure
was executed with the --without-xwidgets option:

   In toplevel form:
   xwidget-test.el:33:7:Error: Symbol's function definition is void: 
   Makefile:273: recipe for target 'xwidget-test.elc' failed

Maybe byte-compilation of this file (or of all xwidget*.el) should be
made conditional on the HAVE_XWIDGETS flag?

>> 12) A question about configuration: are xwidgets only supported in
>> a GTK3 compiled Emacs, or also in other builds?

> xwidgets were originally developed on GTK2, then ported to GTK3. The
> code only works on GTK3 now, so theres lots of potential cleanup.

> AFAICS theres no real obstacle for getting xwidgets to work on
> whatever windowing system. Off screen rendering, and some other
> things would be needed, but I think most modern toolkits support
> that.

> OTOH, I think it would perhaps be easier to just use GTK3 on the
> target build.

Is there any chance to get the code working for lucid or motif? (The
gtk2 and gtk3 builds still suffer from crashes when an X connection is
closed in a multi-tty setup.)


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