Can't enter Umlauts in Ruby 1.9.3 IRB

Question

I am experiencing very strange behavior in Ruby 1.9.3\'s IRB with Mac OS 10.7.3 When I try to enter an Umlaut, it\'s escaped in the prompt and looks like this (I entered

Answer 1

this command solved it for me:

brew install readline
RUBY_CONFIGURE_OPTS=--with-readline-dir="$(brew --prefix readline)" rbenv install 1.9.3-p286

source: https://github.com/rbenv/ruby-build/wiki