[Rd] Periods in package names?

Prof Brian Ripley ripley at stats.ox.ac.uk
Sat Mar 17 10:59:16 CET 2007

On Mon, 5 Mar 2007, Henrik Bengtsson wrote:

> Hi,
> is it ok to have more than one period in a package name, e.g. aroma.light.bioc?
> I remember there was once a limitation/a recommendation that one
> should use at most one period in a package name.  I just browsed
> "Writing R Extensions" (for R v2.4.1) and scanned it for words
> "period" and "dot", and I cannot find this limitation anymore, but
> only:

It was dropped a while back: from src/gnuwin32/CHANGES for 2.3.0

   The restriction on the number of dots in a package name (which
   stemmed from an undocumented restriction in ld.exe) has been worked

> "The Package and Version fields give the name and the version of the
> package, respectively. The name should consist of letters, numbers,
> and the dot character and start with a letter. [...]"

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 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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