"Recovering" Proxomitron's Source Code...

[amy]

Another undocumented "feature" (and likely not a bug, since there's explicitly code to do it) I discovered: when used in the match expression, \h disregards everything but the last 2 components of the hostname; for example, some.sub.domain.example.com and another.sub.domain.example.com will both match \h , as will foo.example.com and example.com itself.

On the other hand, \h in the replacement expression will be replaced with the full hostname.