New redisplay engine for Emacs 20.x?

Monday, 18 May 1998

        As of Thu, 19 Feb 1998 13:20:54 GMT, Andrew Innes <andrewi(a)harlequin.co.uk&gt;
wrote to the emacs-nt list...

...
Last autumn, I did some profiling of the redisplay engine to try and
identify the major bottlenecks (which isn't terribly relevant any more, as
Emacs will soon have a brand new redisplay engine).  However, I also
compared the performance of 20.2 with 19.34.6, out of curiosity. [...]
...
Anyway, since a new redisplay engine has already been written, most
of
this discussion is now moot.  The new engine has been designed from
scratch to work well on pixel-oriented displays, and should avoid at least
some of the inefficiencies of the old engine because of that.  It also
supports proportionally spaced fonts, and mixing fonts of different
heights and widths, so is a major improvement in that regard too. 
Is he talking about the XEmacs engine?  Or did they go back and totally
reimplement everything yet again?

-Bill P.

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