[Rd] edit() doubles backslashes when keep.source=TRUE

[Tomas Kalibera]

Thanks for reporting this, it is a bug, now fixed in R-devel and 
R-patched (PR#17800).

Best
Tomas

On 5/15/20 3:50 AM, William Dunlap via R-devel wrote:
> Is it just my installation or does edit() (or fix(), etc.) in R-4.0.0
> double all the backslashes when options(keep.source=TRUE)?  E.g.,
>
>> options(keep.source=TRUE)
>> f <- function(x) { cat("\t", x, "\n", sep="") }
>> edit(f) # exit the editor without making any changes
> The editor (vi or notepad) shows doubled backslashes
>      function(x) { cat("\\t", x, "\\n", sep="") }
> as does the return value of edit().
>
> If I set options(keep.source=FALSE) before defining 'f' or remove t's
> 'srcref' attribute then the backslashes are left alone.
>
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
>
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