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Re: Compiling Elisp to a native code with a GCC plugin


From: Andreas Schwab
Subject: Re: Compiling Elisp to a native code with a GCC plugin
Date: Wed, 15 Sep 2010 17:31:22 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux)

Lars Magne Ingebrigtsen <address@hidden> writes:

> So you end up with
>
> (or (looking-at "foo ") (search-forward "\nfoo "))
>
> which creates a regexp, anyway, and seems clumsy.
>
> So what I wonder is whether there is a smarter way to do this, in
> general.  (I'm assuming that a simple string search is faster than a
> regexp search, but I've never actually benchmarked this.)

Trivial regexp searches are already optimized to bypass the regexp
engine.  Doing a similar check in looking-at might be worthwhile.

Andreas.

-- 
Andreas Schwab, address@hidden
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