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From: Richard Stallman <rms@gnu.org>
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Subject: Re: [andrew.maguire@ps.ge.com: RE: menu entries missing display of
 equivalent keyboard sequence]
Date: Fri, 31 Jan 2003 14:20:23 -0500
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    > parse_modifiers is extremely expensive--it allocates space in caches.
    > Doing this for a lot of event types unnecessarily is a bad idea.

    My quick experiment indicates that the number of symbols whose cache
    is filled is increased by a bit more than 10% (from 618 to 689
    in my test case, which was rather conservative).

I am surprised--could you see what symbols these are?