[Rd] Possible bug in help file name generation

[Kurt Hornik]

>>>>> Deepayan Sarkar writes:

> On Thu, Jun 24, 2021 at 5:31 PM Iñaki Ucar <iucar using fedoraproject.org> wrote:
>> 
>> Hi,
>> 
>> I noticed that R 4.1 places html files into the packages' help
>> directory, compared to previous versions, which used an RDS. I found a
>> possible bug in the code that processes the aliases from the Rd files
>> and generates the names for these html files (I haven't identified
>> where this happens though).
>> 
>> To reproduce this, install e.g. the 'caper' package from CRAN and
>> inspect the help directory. I find the following file:
>> 
>> 'pgls.confint'$'\n''.html'
>> 
>> which contains a special character. This comes from the fact that the
>> file caper/man/pgls.profile.Rd in caper's source code contains a
>> newline in the corresponding alias:
>> 
>> \name{pgls.profile}
>> \alias{pgls.profile}
>> \alias{plot.pgls.profile}
>> \alias{pgls.confint
>> }
>> 
>> and this ends up in the file name.

> Yes, the code should probably do a trimws() somewhere, but this also
> looks like something that maybe R CMD check should identify and
> complain about.

I'll take a look ...

-k