Pardon my ignorance, but exactly what does _fu mean WRT Ruby plugins,
gems and such?
I have run across this suffix a number of times in Ruby and Rails,
always in connection with some add-on or extension. In the original
context that I encountered ‘_fu’ I inferred that it probably stood for
file upload. However, its widespread use in other contexts evidently
disproves this interpretation. So, does it have a meaning? Does it
derive from the foo in foobar? Does it stand for functional update? Or,
is it an obscure cultural reference to Ruby’s Japanese origins?