This observation was provided by a co-worker. He and I were both surprised that this worked as it does: 

use strict;
use warnings;

my $s = 'foo';
print "s=$    s\n";

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produces: 
s=foo

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But I would have expected this to be consistent and it's not: 
use strict;
use warnings;

my @a = (qw/a b c def/);
my $s = "foo";

print "s=$    s, a=@  a\n";

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produces: 
s=foo, a=@  a

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Is there a defined rule for the whitespace allowed between a variable's type identifier and its name? Or is this just an anomoly of variable interpolation in quoted strings?

In reply to Surprising whitespace behavior by steves

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