Message-ID: <Pine.GSO.4.05.10005301117480.5585-100000@auk.stats>
Date: 2000-05-30T10:25:25Z
From: Brian Ripley
Subject: help() and lib.loc (was Re: question about sgeostat)
In-Reply-To: <Pine.OSF.4.21.0005301012220.8569-100000@zidsrv.sci.uni-klu.ac.at>
On Tue, 30 May 2000, Albrecht Gebhardt wrote:
> > help(tri.mesh)
> Error in help(tri.mesh) : No documentation for `tri.mesh'
> > help(tri.mesh, package="tripack", lib.loc="~/R-Lib-x86/")
> Error in help(tri.mesh, package = "tripack", lib.loc = "~/R-Lib-x86/") :
> No documentation for `tri.mesh'
> > help(tri.mesh, package="tripack", lib.loc="/home/users/agebhard/R-Lib-x86/")
> ... works
>
> So it seems the lib.loc path contents in library() and help() gets parsed
> differently:
>
> library() knows about the expansion of "~" to the $HOME variable (because
> library(tripack,lib.loc="~/R-Lib-x86/") works) but help() does not.
Yes. As "~" is a csh construct, and not in general a valid part of a path,
it is just chance that it works for library. index.search(), the
tool used by help, does not know about "~". sys.source() as used
by library () does.
I'll see if I can add "~" to the knowledge of index.search.
Generally, though, don't assume that packages know about csh's shortcuts.
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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