• Its not clear what behaviour you are expecting.
• This is OT, since your question relates to Win32 command line argument passing, rather than perl.

That said, - if you want 2 parameters passed in, with a trailing '\', try passing the params as '"A A\\" B"':

>perl -e "foreach (@ARGV){print qq('$_'\n);}" "A A\\" B"
'A A\'
'B'
[download]

perl never gets a chance to parse the escaped "\" - that is done by the cmd interpreter.

Update: Aah - learned something today - there is a backdoor way to get the args after all! .. see nodes below.

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