GNU bug report logs - #15006
24.3; emacs manual comment-start-skip example grouping

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Kevin Ryde <user42 <at> zip.com.au>
Cc: 15006 <at> debbugs.gnu.org
Subject: bug#15006: 24.3; emacs manual comment-start-skip example grouping
Date: Thu, 01 Aug 2013 22:30:59 -0400

> Actually I see the cc-mode code uses it with a group.  And js.el too
> (perhaps copying cc-mode).  Does it have some subtle effect of skipping
> the /*, or is it outright wrong?

It's wrong.  But cc-mode likes to reinvent the wheel, so maybe
it doesn't use much of that code anyway.

>> Yes, I prefer to stay away from "whitepace syntax" for that reason and
>> would recommend [ \t]* in its stead.
> I suppose the intention is to pick up non-breaking spaces or whatever
> other flavours of whitespace.  Unlikely to arise in practice in
> programming language stuff.  Is there an obvious ill effect?

You can get things like (re-search-forward comment-start-skip) and end
up with (match-end 0) past the end of the matched comment (e.g. when
matching "//\n").


        Stefan

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