Eh, no. package and require are special cased - their arguments won't trigger the "unquoted string" warning. But it does matter for method calls: 
$ perl -wce 'require foo'
-e syntax OK
$ perl -wce 'package foo'
-e syntax OK
$ perl -wce 'foo -> method'
Unquoted string "foo" may clash with future reserved word at -e line 1
+.
-e syntax OK
$ perl -wce 'Foo -> method'
-e syntax OK

[download]
It also matters for filehandles: 
$ perl -wce 'print Foo'
Name "main::Foo" used only once: possible typo at -e line 1.
-e syntax OK
$ perl -wce 'print foo'
Unquoted string "foo" may clash with future reserved word at -e line 1
+.
Name "main::foo" used only once: possible typo at -e line 1.
-e syntax OK

[download]

Abigail

In reply to Re: runtime eval() and constants by Abigail-II
in thread runtime eval() and constants by dpmott

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