R devel - Apr 2013 - httpd error with and help_type = 'html', package = NULL

Having loaded a package that masks an object from another package, calling


help(conflictedname, help_type = 'html')


instead of producing a page giving the choices of help page available

The page produced is

Error in httpd("/library/NULL/help/nobs", NULL, NULL, c(48, 6f, 73,
74,  :
  replacement has length zero


This example is reproduced using

library(gdata)
help(nobs, help_type = 'html')



sessionInfo()
R version 3.0.0 (2013-04-03)
Platform: i386-w64-mingw32/i386 (32-bit)

locale:
[1] LC_COLLATE=English_Australia.1252  LC_CTYPE=English_Australia.1252   
LC_MONETARY=English_Australia.1252 LC_NUMERIC=C                      
LC_TIME=English_Australia.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] gdata_2.12.0.2

loaded via a namespace (and not attached):
[1] gtools_2.7.1 tools_3.0.0 


There are no issues when using help_type = 'pdf' or help_type =
'text'


Michael

Is this not PR#15282?  No one has got to it yet.

On 23/04/2013 07:32, Michael Nelson wrote:
> Having loaded a package that masks an object from another package, calling
>
>
> help(conflictedname, help_type = 'html')
>
>
> instead of producing a page giving the choices of help page available
>
> The page produced is
>
> Error in httpd("/library/NULL/help/nobs", NULL, NULL, c(48, 6f,
73, 74,  :
>    replacement has length zero
>
>
> This example is reproduced using
>
> library(gdata)
> help(nobs, help_type = 'html')
>
>
>
> sessionInfo()
> R version 3.0.0 (2013-04-03)
> Platform: i386-w64-mingw32/i386 (32-bit)
>
> locale:
> [1] LC_COLLATE=English_Australia.1252  LC_CTYPE=English_Australia.1252   
LC_MONETARY=English_Australia.1252 LC_NUMERIC=C                      
LC_TIME=English_Australia.1252
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] gdata_2.12.0.2
>
> loaded via a namespace (and not attached):
> [1] gtools_2.7.1 tools_3.0.0
>
>
> There are no issues when using help_type = 'pdf' or help_type =
'text'
>
>
> Michael
>
> ______________________________________________
> 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