[Rd] R CMD check and error in an \Sexpr in an Rd file

[Renaud Gaujoux]

Although I use Latex quite a lot, I am not literate in Latex macro 
languages (e.g. the definition of AsIs).
Is there (I am sure there is) a reason why a plain verbatim environment 
is not used in this case?


On 03/11/2011 14:19, Duncan Murdoch wrote:
> On 11-11-03 7:58 AM, Renaud Gaujoux wrote:
>> Georgi, I tried with paste() instead of cat(), but I then get the
>> following in my PDF manual:
>>
>> [1] "line\nnext line"
>>
>> i.e. what would be printed in the R console, which is not what I want.
>> I would like to get something like this in the Latex code:
>>
>> \begin{verbatim}
>> line
>> next line
>> \end{verbatim}
>
> I don't think you want that:  it forces display mode.  You might want 
> verbatim text displayed inline, like \verb does.
>
>>
>> Using cat() I get the following in the Latex code:
>>
>> \AsIs{
>> line
>> next line}
>>
>> which does not render as a new line in the PDF and breaks if empty lines
>> are present in the output text.
>
> So the problem is with the \AsIs macro.  You can see the definition in 
> the Rd.sty file in R_HOME/share/texmf/tex/latex.  Can you suggest an 
> improvement?
>
> Duncan Murdoch
>
>> Besides it will also break on \Sexpr[results=verbatim,
>> stage=render]{list("text", 3)}.
>>
>> But maybe this is not what 'results=verbatim' is supposed to do nor to
>> be used for?
>>
>> Renaud
>>
>> Another test Rd file.
>>
>> %%%%%%%%%
>> \name{Sexpr}
>> \alias{Sexpr}
>> \title{Error and verbatim in Sexpr}
>> \description{
>>      Testing Sexpr in Rd files
>>
>>      %\Sexpr[results=verbatim, stage=render]{stop("error in sexpr")}
>>
>>      Verbatim:
>>
>>      1: \Sexpr[results=verbatim, stage=render]{cat("line\nnext line\n")}
>>
>>      2: \Sexpr[results=verbatim, stage=render]{"line\nnext line\n"}
>>
>>      3: \Sexpr[results=verbatim, stage=render]{list("line\nnext 
>> line", 3)}
>>
>>      Text:
>>
>>      1: \Sexpr[results=text, stage=render]{cat("line\nnext line\n")}
>>
>>      2: \Sexpr[results=text, stage=render]{"line\nnext line\n"}
>>
>>      3: \Sexpr[results=text, stage=render]{list("line\nnext line", 3)}
>>
>> }
>> %%%%%
>>
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