Checking for Emacs flavors, OS, graphics, ... (was: How big are your customisations?)

[Reiner Steib <reinersteib+gmane@imap.cc>]

On Fri, Jul 28 2006, Davin Pearson wrote:

> emacs-dialect--dosemacs-p

(memq system-type '(ms-dos))

> emacs-dialect--xemacs-p

(featurep 'xemacs)

> emacs-dialect--gnuemacs-p

(not (featurep 'xemacs))

> os-type--microsoft-p

(memq system-type '(ms-dos windows-nt cygwin))

> os-type--linux-p

(memq system-type '(gnu/linux))

> os-type--mswindows-p

(memq system-type '(windows-nt))

> os-type--msdos-p

(memq system-type '(ms-dos))

> os-type--graphical-p

(display-graphic-p)

> os-type--text-p

(display-graphic-p)

> Wouldn't it be good if similar functions were available as standard
> commands, since they are so useful?

Most of such predicates are already available.  More often you should
check for specific feature instead of checking for specific operating
systems of Emacs flavors.

Bye, Reiner.
-- 
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      (o o)
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