[Rd] Bug in sub and gsub (PR#13460)

[banzaleon at gmail.com]

Full_Name: Leon C. Banza
Version: 2.8.1
OS: Windows Vista
Submission from: (NULL) (195.69.243.253)


I believe there is a serious bug in the code for sub and gsub.  I do as
following:

gsub("\\", "-", "some\\backslashed\\string")

This ought return "some-backslashed-string", but prints warnings instead:

Error in sub("\\", "", "baba\\") : invalid regular expression '\'
In addition: Warning message:
In sub("\\", "", "baba\\") : regcomp error:  'Trailing backslash'

I believe this is a matter of a simple correction in the source code.

Leon