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

[Thomas Friedrichsmeier]

On Monday 01 August 2011, Duncan Murdoch wrote:
> I've just committed the changes to R-devel.  Let me know if there is
> anything worse than what I described.

Well, you did not give detail on that, but I was surprised about the "topic" 
field for vignettes. Here (on a Debian/Linux system), for some vignettes, 
"topic" contains a file path, which - I guess - may have been used during 
installation of the package, but is no longer present on my system. E.g:

  topic
  "/tmp/RtmpMQhWJi/R.INSTALL494a2adb/AnnotationDbi/inst/doc/AnnotationDbi" 
  title 
  "AnnotationDbi: How to use the \".db\" annotation packages" 
  Package 
  "AnnotationDbi"

I would expect the "topic" field to always contain a string suitable for use as 
the "topic" parameter in vignette(). For some other vignettes() found by 
help.search() this is is working. I did not figure out a pattern, so far.

Besides that, while testing, I found that the dynamic help fails to display 
the result of
  help.search ("grid")
with this message:
  Error in .HTMLsearch(query) : 
  number of items to replace is not a multiple of replacement length
I note that in the matches of that query, several vignettes are listed twice. 
This probably indicates a problem in my installation, but may still be worth 
fixing.

Regards
Thomas
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