SPUG: /(abc)/g in SCALAR; /g unnecessary

[Tim Maher/CONSULTIX]

>> Message submitted at: Wed Sep 22 11:11:04 PDT 1999
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SPUGers,

Colin said last night that the /g is not needed to get
parenthesized matches returned in the SCALAR context;
unfortunately, at the time, our projectable-laptop wasn't yet
working, so I wasn't able to do a live test to settle the issue.

Having now looked into this, I see that he is correct (as
usual!).  I vaguely remembered a case I had encountered in which
the presence/absence of the /g seemed to make a difference, but
I haven't been able to reproduce it, so until further notice 8-},
I too believe that the /g is not needed to get post-match
variables set!

Thanks for the clarification!
-Tim

P.S.  NOTE: if you want to repeatedly perform matches against
the same string, you'll need /g; that's not what we're talking
about here!

$ cat /tmp/c
#! /usr/bin/perl -w
# Parenthesized matches returned, whether or not /g present

$_='Linux 2.0.36. (POSIX).';
/(\w+)\s+(\w+)/		and  print "Found $1/$2\n";
/(\w+)\s+(\w+)/g	and  print "Found $1/$2\n";

$ /tmp/c
Found Linux/2
Found Linux/2
$ 

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