[Rd] Front ends handling help.search() results?

Duncan Murdoch murdoch.duncan at gmail.com
Wed Aug 3 20:00:01 CEST 2011

On 03/08/2011 1:23 PM, Thomas Friedrichsmeier wrote:
> On Wednesday 03 August 2011, Duncan Murdoch wrote:
> >  I can't reproduce this.  Can you get any more detail, e.g. by setting
> >  options(error=recover) or similar?
> Interestingly, that does not start a browser, and options(error=dump.frames)
> appears to have no effect, either. geterrmessage() does list the error, though.
> I'm not sure whether that is or is not the expected handling of errors inside
> input handlers.
> Either way, I found I can trigger the error using
>     tools:::httpd("/doc/html/Search", c(pattern = "grid"))
> debugging from there shows that the error is on line
>     vignettes[i,]<- c(pkg, unlist(vignette[,c("File", "Title", "PDF", "R")]))
> At this point, "vignette" is:
>                  File                 Title             PDF  Depends Keywords
>     1 displaylist.Rnw Display Lists in grid displaylist.pdf graphics
>     2 displaylist.Snw Display Lists in grid displaylist.pdf graphics
>                   R
>     1 displaylist.R
>     2 displaylist.R
> >  Vignettes listed twice sounds as
> >  though you may have two copies of grid installed in your .libPath(), but
> >  that shouldn't happen for a base package.
> It appears, the cause of the problem was failure to "make clean" every once in
> a while, and this resulted in installing both displaylist.Rnw and
> displaylist.Snw (into a single library location).

Thanks.  I'll put in code to protect against that possibility.


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