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Re: To be a list or not

From: Richard Stallman
Subject: Re: To be a list or not
Date: Sat, 29 Dec 2007 12:49:05 -0500

    Eh, yes but (sequencep '(prop . val)) also returns t at least in my 
    version of Emacs. But maybe this has been changed?

In a strict sense, that is not a sequence.  So ideally `sequencep'
should return nil.

However, making it return nil would require changing it from a
constant-time function to a linear-time function, and that seems like
a bad idea overall.

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