[zsh-completion] Completion for unknown commands

test/test_go.rb

@@ -126,7 +126,7 @@ class Tmux
   def prepare
     tries = 0
     begin
-      self.send_keys 'C-u', 'hello'
+      self.send_keys 'C-u', 'hello', 'Right'
       self.until { |lines| lines[-1].end_with?('hello') }
     rescue Exception
       (tries += 1) < 5 ? retry : raise