On 19/08/2010 3:17 PM, Marc Schwartz 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...
I probably will before I go ahead with this, but I may as well start on
this group.
Duncan
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