R devel - Aug 2010 - prompt () and backticks for default arguments

Dear all,

I just noticed, that prompt () looses backticks that protect default arguments:

f <- function (FUN = `*`) {}

cat (prompt (f, NA)$usage)

yields:
\usage{ f(FUN = *) } %- maybe also 'usage' for other objects documented
here.
without the backticks, which is of course found by R CMD check as syntax error.

While this is easily fixed if the .Rd is further edited manually, I stumbled 
over it using the automated .Rd generation with inlinedocs - in this combination
it is very inconvenient.

Any suggestions?

All the best,

Claudia


-- 
Claudia Beleites
Dipartimento dei Materiali e delle Risorse Naturali
Universit? degli Studi di Trieste
Via Alfonso Valerio 6/a
I-34127 Trieste

phone: +39 0 40 5 58-37 68
email: cbeleites at units.it

On Tue, 17 Aug 2010, Claudia Beleites wrote:
> Dear all,
>
> I just noticed, that prompt () looses backticks that protect default 
> arguments:
>
> f <- function (FUN = `*`) {}
>
> cat (prompt (f, NA)$usage)
>
> yields:
> \usage{ f(FUN = *) } %- maybe also 'usage' for other objects
documented here.
> without the backticks, which is of course found by R CMD check as syntax 
> error.
>
> While this is easily fixed if the .Rd is further edited manually, I
stumbled
> over it using the automated .Rd generation with inlinedocs - in this 
> combination it is very inconvenient.
>
> Any suggestions?
Add backtick = TRUE to the deparse() call in prompt.default().
>
> All the best,
>
> Claudia
>
>
> -- 
> Claudia Beleites
> Dipartimento dei Materiali e delle Risorse Naturali
> Universit? degli Studi di Trieste
> Via Alfonso Valerio 6/a
> I-34127 Trieste
>
> phone: +39 0 40 5 58-37 68
> email: cbeleites at units.it
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>
-- 
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