Re: [Rd] deparse operators in expressions

From: Yihui Xie <>
Date: Sun, 10 Apr 2011 13:08:14 -0500

Thanks for pointing out the direction. Since this is unlikely to change in base R, is it possible to change from an add-on package?

I think it is reasonable to eliminate spaces around ^ and :, but I don't understand why /, %% and %/% should be different with other arithmetic operators like +, - and *.


Yihui Xie <>
Phone: 515-294-2465 Web:
Department of Statistics, Iowa State University
2215 Snedecor Hall, Ames, IA

On Sun, Apr 10, 2011 at 8:20 AM, Duncan Murdoch
<> wrote:

> On 11-04-09 9:43 PM, Yihui Xie wrote:
>> Hi,
>> I observed a slight problem in deparse(): it will add spaces around
>> most operators except /. I wonder if this is easy to fix. I know this
>> is quite trivial, but I will appreciate if / is not treated as an
>> exception. Examples:
> It's easy to change:  take a look at src/main/deparse.c.  The operators that
> are labelled as PP_BINARY2 get no spaces.  Looking in src/main/names.c, we
> see those are /, ^, %%, %/% and :.
> But clearly this is by design, and I think it's unlikely to change.
> Duncan Murdoch
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