Re: option for loading up a gui specific emacs daemon

[Ken Raeburn <raeburn@raeburn.org>]

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On Dec 13, 2016, at 18:02, Filipe Silva <filipe.silva@gmail.com> wrote:

> Dear developers of the mighty emacs editor, 
> 
> I'd like to load emacs with emacs --daemon=gui and then connect to it with emacsclient -c --sever-file=gui.
> 
> This works almost right. The problem is that various popular packages make extensive use of the (display-graphic-p) function/predicate to query frame capabilities. For example, a theme package may query (display-graphic-p) and assign gui or tty colors accordingly. 
> 
> the thing is that(display-graphic-p) always returns nil in a emacs --deamon type of loading, because emacs does not know if you are using emacsclient with a gui or a tty.

Daemon mode isn’t the only time a graphical display can be added when one wasn’t initially in use.  A tty-mode Emacs can still run M-x make-frame-on-display or run a server.

If a package is assuming that the characteristics of the current frame (like the result of display-graphic-p) when the package is loaded will apply to every frame ever in that Emacs session, the package has a bug….

Ken

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