http://qs321.pair.com?node_id=1066574


in reply to Want for a name?

What about borrowing a term from the regex lingo? Something like map_look_ahead...
لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ