Re: [Rd] minor iconvlist() bug in r-devel

From: Deepayan Sarkar <deepayan_at_stat.wisc.edu>
Date: Wed 16 Mar 2005 - 16:47:35 GMT

On Wednesday 16 March 2005 10:11, Prof Brian Ripley wrote:
> That file is created by
>
> $(top_builddir)/library/$(pkg)/iconvlist: most
> @iconv -l > $@ 2> /dev/null || touch $@
>
> What version of iconv -l is that produces such a list? That in glibc
> 2.3.4 does not produce the header when redirected.

I have version '2.3.2.ds1-20' on Debian testing. '--silent' doesn't help.

> Your fix is not safe: iconv in libiconv produces items separated by
> space or newline. Looks like we will have to work harder to
> distinguish the two.

Can anything with a lowercase letter be safely rejected? That would bring the spurious names down to 2 (FROM and TO).

Deepayan

> Brian
>
> On Wed, 16 Mar 2005, Deepayan Sarkar wrote:
> > This is on r-devel from 2005-03-15. iconvlist() uses (at least some
> > of the time)
> >
> > icfile <- system.file("iconvlist", package = "utils")
> >
> > which looks like
> >
> > """
> > The following list contain all the coded character sets known.
> > This does not necessarily mean that all combinations of these names
> > can be used for the FROM and TO command line parameters. One coded
> > character set can be listed with several different names (aliases).
> >
> > 437//
> > 500//
> > .
> > .
> > .
> > """
> >
> > which leads to
> >
> >> tail(iconvlist(), n = 40)
> >
> > [1] "WS2" "YU" "all" "all"
> > "and" [6] "be" "be" "can" "can"
> > "character" [11] "character" "coded" "coded"
> > "combinations" "command" [16] "contain" "different" "does"
> > "following" "for" [21] "known." "line"
> > "list" "listed" "mean" [26] "names" "names"
> > "necessarily" "not" "of" [31] "parameters." "set"
> > "sets" "several" "that" [36] "the"
> > "the" "these" "used" "with"
> >
> > A possible fix seems to be to replace
> >
> > ext <- readLines(icfile)
> >
> > by
> >
> > ext <- grep("/$", readLines(icfile), value = TRUE)
> >
> > but I don't know if that's guaranteed to work.
> >
> > -Deepayan
> >
> > ______________________________________________
> > R-devel@stat.math.ethz.ch mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-devel



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https://stat.ethz.ch/mailman/listinfo/r-devel Received on Thu Mar 17 04:06:26 2005

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