Larry Wall wrote:

> Can anyone think of a good reason not to topicalize the first arg
> of ordinary subs these days?  Other than subtle encouragement toward
> use of multis?  I suppose it also makes refactoring between subs and
> methods more difficult in the case where you're adding an invocant,
> though it actually makes it easier in the case where you're just
> turning the first sub argument into an invocant because you realize
> you've been writing C-style OO code...
>   
> 

I'm having a hard time coming up with good reasons why we don't

    s:g/<!before multi \s+>  (sub|method) /{"single $1"}/;
    s:g/multi (sub|method) / $1 /;

And then have a "single" still be multi, just with a MMD distance of 
-Inf to everything.

-- Rod Adams