"Sir, a second illegitimate copyright claim has hit Gamers Nexus"
www.youtube.com/watch?v=-4YgqECQgXM

string("true") || string("false"), which means it tries the first parser, and on failure the second one (and therefore the consumed input must get "un-consumed").val c = one-of("tf")
if c == 't' then
string("rue")
else
string("alse")