MPI (the scripting language), while quite useful and fun to play with on FuzzBall TinyMUCKs, also has some of the nastiest syntax known. To wit:
{with:awake,,{foreach:player,{contents:here,player},{if:{awake:{&player}},{set:awake,
{mklist:{&awake},{name:{&player}}}}}},{color:{nl}~&160{commas:{&awake},
~&R~&170 and ~&R~&160,player,{if:{ge:{idle:*{&player}},60},{&player}~&R~&040(idle
{div:{idle:*{&player}},60}m{mod:{idle:*{&player}},60}s)~&R~&160,{&player}}}}
{color:~&R~&170 {if:{eq:{count:{&awake}},1},is ,are }awake here.~&R}}
And that's actually a fairly well-coded example. It will return a list of characters awake in a room, in ANSI color.