Path: utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!sunic!bmc!kuling!jand
From: jand@kuling.UUCP (Jan Dj{rv)
Newsgroups: comp.lang.perl
Subject: Which variables must be local ?
Message-ID: <1421@kuling.UUCP>
Date: 27 Feb 90 22:46:40 GMT
Reply-To: jand@kuling.UUCP (Jan Dj{rv)
Organization: Dept. of Computer Systems, Uppsala University, Sweden
Lines: 15

I have never quite figured out if the "predefined" variables like
$_, $1, $2, $' and so on must be declared as local when used in a sub.

My scripts seem to work regardless...

If there are some variables that are automatically local, I'd like to know
which.

If not, may I suggest that variables in pattern matching ($<digit>, $', $`,
$+, $&) and $_ be made automatically local in subs.

Just curious,

	Jan D.