Current Perl documentation can be found at perldoc.perl.org.
Here is our local, out-dated (pre-5.6) version:
It depends just what you mean by ``escape''.
URL escapes are dealt with in the perlfaq9 manpage. Shell escapes with the backslash (\) character are removed with:
s/\\(.)/$1/g;
This won't expand "\n" or "\t" or any other special escapes.