[R] RW 0.64.2 substring() string truncation?
Prof Brian D Ripley
ripley at stats.ox.ac.uk
Tue Aug 3 10:22:41 CEST 1999
On Tue, 3 Aug 1999, T.E.Diaz wrote:
> Can somebody tell me what exactly is going on below. Basically, I am
> running into some kind of "string truncation" problem when I try
> to get a substring starting past the 8192nd character (see sample
> session below). There doesn't appear to be any problem creating the
> string, and nchar() reports the correct size as constructed.
substr/substring has a buffer size limit of 8192. Indeed, the include file
Defn.h:#define MAXELTSIZE 8192 /* The largest string size */
One day this limit may be removed, but for now at least we could document
it. I am not at all clear why one would want to use a single string longer
than 8192 chars: is it possible in your applications to use a vector of
shorter strings instead?
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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