Opps, my last comment/code got cut off :(

Here goes again....

And going into sub prototype sublime you can also do:

    sub then   (&@) { @_ }
    sub elsedo (&@) { @_ }

    my $x = 2;

    my_if_else $x < 0,
        then   { say "$x is lower than zero" }
        elsedo { say "$x is greater or equal to zero" };

But yes, I do get your point about proc/sub. There is only so far you could (and should!) stretch the parsers syntax.

There is always macros (see Devel::Declare in Perl) if you're mad enough to want cosmetic purity :)