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Re: What is emacs architecture ?

From: Stephen J. Turnbull
Subject: Re: What is emacs architecture ?
Date: Thu, 08 Jul 2010 17:22:20 +0900

Eli Zaretskii writes:

 > > http://www.xemacs.org/Documentation/21.5/html/internals.html
 > > 
 > > It's not intensively maintained, and obviously is going to differ from
 > > GNU Emacs in many details.
 > In too many details, I'm afraid.

*At the level* we're talking about (UML diagrams!), it doesn't really
matter if *redisplay* is *implemented* differently.  The problems
encountered are the same, and it fits into the LISP read-eval-print
loop in basically the same way.  (Ie, it's not actually a R-E-P loop,
it's based on a GUI event loop with the R being "receive event" and P
being "redisplay", and the E has to take account of being event-
driven.)  I could be wrong, but it's my understanding that it is that
kind of thing that the OP wants to get a handle on.  Not the meaning
of the __P macro (which is about to disappear anyway<wink>).

Nor would it hurt the OP to see concepts that Emacs has rejected
(extents and specifiers, for example), not to mention some of the
things Emacs is currently in the process of thinking about adding
(loadable modules) and even some of the things we've kinda horked and
hopefully y'all will do better ("native" widgets).

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