irbrc.rb in rvm-1.1.1

- old
+ new

@@ -46,9 +46,10 @@
   :PROMPT_C => "#{rvm_ruby_string} > ",
   :PROMPT_N => "#{rvm_ruby_string} ?> ", # unknown continuation
   :RETURN => " => %s \n",
   :AUTO_INDENT => true
 }
+IRB.conf[:PROMPT] ||= {}
 IRB.conf[:PROMPT][:RVM] = @prompt
 IRB.conf[:PROMPT_MODE] = :RVM
 
 # Load the user's irbrc file, if possible.
 # Report any errors that occur.