From antonio.fabio at gmail.com  Wed Sep 20 18:47:33 2006
From: antonio.fabio at gmail.com (Antonio, Fabio Di Narzo)
Date: Wed, 20 Sep 2006 18:47:33 +0200
Subject: [Rd] Sweave processes \Sexpr in commented LaTeX source
	(2.3.1patched and 2.4.0)
In-Reply-To: <m2psdq7dpy.fsf@ziti.local>
References: <1158711280.5348.24.camel@localhost.localdomain>
	<17680.58131.594486.582029@celebrian.ci.tuwien.ac.at>
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Message-ID: <b0808fdc0609200947q16f14052o49fb18e62c439439@mail.gmail.com>

2006/9/20, Seth Falcon <sfalcon at fhcrc.org>:
> Peter Dalgaard <p.dalgaard at biostat.ku.dk> writes:
> > ..not to mention TeX comments inside Sexpr (e.g. %*%...). Skipping
> > lines with % as the first character might be a viable compromise
> > though.
>
> +1.  You could probably ignore any lines where the first
> non-whitespace char is '%'.  But if that seems to risky, then only
> recognizing first-char-is-% seems a worthwhile heuristic.
>
> Another place where this has bitten people is when they do:
>
> %\usepackage{Sweave}
>
> Sweave picks that up and doesn't insert the usepackage line itself.

I've found that extremely useful for sweaving Stex files which aren't
"master" files (i.e., only files to include in a main latex file).
Inserting '\usepackage{Sweave}' in each would result in a latex error.
So commenting it out is a useful workaround.

Antonio.

> So ignoring LaTeX comment lines would solve two problems.
>
> Best,
>
> + seth
>
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[Rd] Sweave processes \Sexpr in commented LaTeX source (2.3.1patched and 2.4.0)
Antonio, Fabio Di Narzo