JuliaLang/julia — pull request #6467 by mbauman (2014-04-08 15:24:54+00:00)
Title: Add edit_transpose and bind ^T in the REPL

Also prevent other unprintable and unused control codes from being entered. Of those, I think only ^X (did this set/jump to a mark?) and ^V (printed the following keystroke as an escaped string) did anything in the old readline REPL.