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From: Dave Love <d.love@dl.ac.uk>
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Subject: skip-chars-forward v. re-search-forward
Date: 02 Apr 2003 18:43:21 +0100
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I've tended to use skip-chars-forward instead of re-search-forward
since it's byte-coded and I assumed it's more efficient.  However, I
made a measurement and found that skip-chars-forward was actually
slower than re-search-forward.

Is there a good reason for maintaining the two implementations?
Implementing skip-chars-forward using re-search-forward would have the
advantage that character classes would work with it, which they
currently don't.