Re: [Rd] Wishlist: Sweave: allow line breaks after forward slashes (PR#9443)

From: Duncan Murdoch <>
Date: Thu 11 Jan 2007 - 14:53:41 GMT

On 1/11/2007 9:07 AM, wrote:
> Full_Name: Arne Henningsen
> Version: 2.4.0
> OS: Linux
> Submission from: (NULL) (
> Sweave does not allow line breaks after forward slashes ("/"). This might lead
> to a long "substring" of a command that cannot be wrapped. Hence, Sweave either
> keeps this long "substring" in the current line and produces a too long line or
> it moves the entire "substring" in the following line and leaves the current
> line rather empty. This problem can be solved if Sweave is allowed to introduce
> line breaks after forward slashes. (I guess that this problem can also be solved
> if parse() adds a blank after a forward slash.)
> Example:
> The following expression cannot be wrapped by Sweave:
> mean(myDataframe$myFirstVariable)/mean(myDataframe$mySecondVariable)

It's actually deparse() that causes this, but the problem is already solved in R-devel (to become R 2.5.0). If you don't like the formatting that deparse() gives to one of your expressions, use the Sweave option keep.source=TRUE, and your original formatting will be kept for that chunk. Or globally retain your formatting via \SweaveOpts{keep.source=TRUE} at the start of your file.

Duncan Murdoch mailing list Received on Fri Jan 12 02:34:43 2007

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