GAWD! Well, the fact that you write "optimized" yourself suggests that it is really an unwanted side effect of an optimization... may I push it as far as to dare to say that it is a bug?
Well, another trick that I verified not to be flawed is:
my $count=map $_, split;
of course it doesn't just taste as good... hmmm, how 'bout:
my $count=+(split); # ?!?
(also verified!)
$ perl -lpe '$_=+(split)'
foo
1
bar baz
2
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