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Date:         Fri, 25 Feb 2011 09:03:47 +0100
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From: Philipp Stephani <st_philipp@YAHOO.DE>
Subject: Re: Packages using expl3
To: LATEX-L@listserv.uni-heidelberg.de
In-Reply-To:  <u0lwrkp2e3i.fsf@orc05.imf.au.dk>
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Status: R

Am 25.02.2011 00:43, schrieb Rasmus Villemoes:
> Joseph Wright <joseph.wright@MORNINGSTAR2.CO.UK> writes:
> 
>> Handy list. I'll have to look through by hand as what I need to know is
>> direct use of expl3 material (as I know about fontspec, simply requiring
>> it is not so much of the issue as subsequently \ExplSyntaxOn within the
>> package).
> 
> The subset with at least one occurence of \ExplSyntaxOn is not so big:

I think you should also search class (*.cls) files. Furthermore,
\ExplSyntaxOn is executed by \ProvidesExplPackage/Class/File.