<oerjan> le/rn scowrevs///hackenv/share/scowrevs is a list of repository revision ranges that affected a lot of files but in the end changed nothing (usually because of a revert at the end). Most of our custom repository lookup commands ignore these to reduce noise.

#!/usr/bin/env lua

math.randomseed(os.time())
W={}
for i,a in ipairs(arg) do
   for w in a:gmatch("[^%s]+") do
      table.insert(W, w)
   end
end
if #W>0 then
   print(W[math.random(#W)])
end