bug#5749: 24.0.50; Gomoku startup latency

[Stefan Monnier]

>> 1. Let ~/.emacs consist of this sexp:
>> (setq initial-frame-alist '((fullscreen . fullheight)))
>> 2. Start Emacs with the above init file.
>> 3. M-x gomoku
>> => There is a noticeable delay loading the game -- on my system 3-4
>> seconds.

> This is interesting. Emacs 23.1 is almost instantaneous, but 23.1.94
> is very slow, and also starts using a huge amount of memory (1GB+ for me).
> Loading gomoku.el from 23.1 in 23.1.94 makes no difference.

Indeed.  ELP says the time is all spent in insert-buffer-substring,
called via append-to-buffer (in my case, 13 calls of 0.5s each).


        Stefan