Looks like you don't even need the quotes: 
$ perl -le 'print -aaa'
-aaa
$ perl -le 'print -+-aaa'
+aaa

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You can't put "--aaa" because Perl thinks it's a decrement.
"If you go on with this nuclear arms race, all you are going to do is make the rubble bounce" -- Winston Churchill

In reply to Re^4: version string oddities (-bug) by gustavderdrache
in thread version string oddities by chrisdolan

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