[R-pkg-devel] CRAN check texi2dvi failure

[Duncan Murdoch]

On 10/01/2021 9:12 a.m., Paul Gilbert wrote:
> Thanks Enrico for the great guess, and Georgi for the details.
> 
> If I omit the space as seems to be implied in some documentation, changing
>     \verb <https://www.bankofcanada.ca/2006/03/working-paper-2006-3> .
> to
>     \verb<https://www.bankofcanada.ca/2006/03/working-paper-2006-3> .
> 
> then the R CMD check error "\verb ended by end of line" happens on my
> linux machine. I did not try replacing the space with another
> deliminator, which I guess would now be the correct way to use \verb.

Yes, you would need to do that.

> The solution of adding
>     \usepackage{url}
> 
> and changing to
>     \url{https://www.bankofcanada.ca/2006/03/working-paper-2006-3}.
> 
> does seem to work. (No "on CRAN" confirmation yet but I have not had the
> immediate pre-test rejection that I got previously.)

The risk of this change is that the URL may fail in CRAN tests; see the 
recent "URL checks" thread on R-devel for a discussion of ways in which 
this can happen even when the URL works for you.

Duncan Murdoch

> 
> Paul
> 
> On 2021-01-10 8:04 a.m., Georgi Boshnakov wrote:
>   > The problem is not in the Warning from the example but from
>   > the \verb commands in the references.
>   > You use space to delimit the argument of \verb and I was surprised
>   > that it worked since TeX ignores spaces after commands.
>   > Apparently, this has been an exception for \verb but now this feature
>   > is considered a bug and hs been recently fixed, see the atacjexchange
>   > question below and the relevant paragraph from LaTeX News. Probably
>   > the linux machines have updated their TeX installations.
>   >
>   > In short, changing the space tp  say  +  delimiter for \verb command
> should fix the issue.
>   >
>   > Georgi Boshnakov
>   >
> 
> On 2021-01-09 6:52 p.m., Enrico Schumann wrote:
>> When I run R CMD check on my Linux machine [*], I also
>> do not get an error.  But here is a guess: The error
>> mentions \verb, and the LaTeX manual says that \verb
>> should be followed by nonspace character.  But in the
>> vignette it is followed by a space.  Maybe using \url
>> in the vignette could fix the error?
>>
>> kind regards
>>       Enrico
>>
>>
>>
>> [*] R version 4.0.3 (2020-10-10)
>>       Platform: x86_64-pc-linux-gnu (64-bit)
>>       Running under: Ubuntu 20.10
>>
>>> On Sat, 09 Jan 2021, Paul Gilbert writes:
>>
>>> I am trying to debug a problem that is appearing in the
>>> linux and Solaris checks, but not Windows or Mac
>>> checks, of my package tsfa as reported at
>>> https://cran.r-project.org/web/checks/check_results_tsfa.html
>>>
>>> The problem is with re-building the vignette
>>>     ...
>>>     this is package 'tsfa' version '2014.10-1'
>>>     ...
>>>    checking re-building of vignette outputs ... [6s/9s] WARNING
>>>    Error(s) in re-building vignettes:
>>>     ...
>>>       Running 'texi2dvi' on 'Guide.tex' failed.
>>>       LaTeX errors:
>>>       ! LaTeX Error: \verb ended by end of line.
>>>     ...
>>>
>>> In responding to the threat of removal I have also
>>> fixes some long standing warnings about adding imports
>>> to the NAMESPACE. The new version builds with --as-cran
>>> giving no errors or warnings with both R-devel on
>>> win-builder (2021-01-07 r79806) and on my linux machine
>>> (R 2021-01-08 r79812 on Linux Mint 19.3 Tricia). When I
>>> submit it to CRAN the Windows build is OK but the same
>>> error happens at the 'texi2dvi' step in the debian
>>> vignette re-build.
>>>
>>> This seems to happens after an example that correctly
>>> has a warning message (about Heywood cases). In my
>>> linux build the the warning happens but the message
>>> does not appear in the pdf output, so one possibility
>>> is that the handling of the warning on the CRAN Unix
>>> check machines fails to produce clean tex or suppress
>>> output. Another possibility is that my build using
>>> --as-cran is different from the actual CRAN build
>>> options. For example, my 00check.log shows
>>> ...
>>> * checking package vignettes in ‘inst/doc’ ... OK
>>> * checking re-building of vignette outputs ... OK
>>> * checking PDF version of manual ... OK
>>> * checking for non-standard things in the check directory ... OK
>>> ...
>>>
>>> so I am not sure if it uses texi2dvi. (I haven't used
>>> dvi myself for a long time.)
>>>
>>> I'm not sure how to debug this when I can't reproduce
>>> the error. Suggestions would be appreciated.
>>>
>>> Paul Gilbert
>>>
> 
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