From: ts <decoux@...>
Date: 2005-09-29T23:07:05+09:00
Subject: Re: Backslashes

>>>>> "H" == Han Holl <han.holl@gmail.com> writes:

H> Is this a bug, or should it be specially documented ?

 Well, it's documented but in the FAQ


Regexp.quote('\\') escapes a backslash.

It gets trickier if you're using sub and gsub, Say you write gsub(/\\/,
'\\\\'), hoping to replace each backslash with two. The second argument is
converted to '\\' in syntax analysis. When the substitution occurs, the
regular expression engine converts this to '\', so the net effect is to
replace each single backslash with another single backslash. You need to
write gsub(/\\/, '\\\\\\')!


Guy Decoux