[Rd] Does anyone use Sweave (RweaveLatex) option "expand=FALSE"?

[Kasper Daniel Hansen]

I have read a significant number of vignettes from Bioconductor
packages and I have never seen it used.

Kasper

On Thu, Aug 19, 2010 at 3:17 PM, Marc Schwartz <marc_schwartz at me.com> wrote:
> On Aug 19, 2010, at 2:07 PM, Duncan Murdoch wrote:
>
>> I am trying to improve the error reporting in Sweave documents, so that if you have a syntax error in a code chunk, it will tell you which line of your input file contained the error.
>>
>> For example, currently you get this:
>>
>> Error:  chunk 1 (label=named)
>> Error in parse(text = chunk) : unexpected symbol in "x <- foo bar"
>> Execution halted
>>
>> and I'd like errors to be more like this:
>>
>> Error:  chunk 1 (label=named)
>> Error in parse(text = chunk, srcfile = srcfile) :
>> test.Rnw:9:10: unexpected symbol
>> 9: x <- foo bar
>>           ^
>> Execution halted
>>
>> It turns out that this requires changes that make the "expand=FALSE" option quite hard to implement.  Is anyone using it?  For those who don't know it, "expand=FALSE" means that a code chunk like
>>
>> <<echo=TRUE, keep.source=TRUE,expand=FALSE>>=
>> z <- 3
>> <<named>>
>> @
>>
>> will be displayed as
>>
>> > z <- 3
>> > <<named>>
>>
>> rather than expanding the named chunk.  I'd like to drop the option, so that the default behaviour (which has always been equivalent to "expand = TRUE") would be the only behaviour.
>>
>> Duncan Murdoch
>
>
> I don't. So 1 "go ahead and drop it" vote...
>
> You may want to post this to R-Help though Duncan, as I suspect there may be more Sweave users there than here...
>
> Thanks and regards,
>
> Marc Schwartz
>
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