D:\tmp\exp>perl -E"say join'|',@ARGV" "1\" 2" "3
1" 2|3

##</code><code>##

D:\tmp\exp>type cmd_wrapper.bat
@echo off
echo %*| perl.exe .\wrapped_pl.pl


D:\tmp\exp>cmd_wrapper.bat "1\" 2"
"1\" 2"| perl.exe .\wrapped_pl.pl