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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: should fset 'symbol get an undefined function warning?
Date: Tue, 30 Oct 2007 20:09:06 -0400
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To: Dan Nicolaescu <dann@ics.uci.edu>
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In-reply-to: <200710300514.l9U5Exr1024070@oogie-boogie.ics.uci.edu> (message
	from Dan Nicolaescu on Mon, 29 Oct 2007 22:14:59 -0700)
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    The warning "the function `my-fset-test' is not known to be defined"
    is generated when compiling:

    (fset 'my-fset-test 'foo)
    (my-fset-test)

If you use `fset' it means that you are playing around with the
symbol's definition.  So it seems like a mistake to assume anything
about it.  Normally the first arg of `fset' is not a quoted constant
anyway.

If you want to make an alias that the compiler will know about, use
`defalias'.