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Getting irb history without readline [May. 17th, 2014|01:46 am]
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I built Ruby 2.1.2 from source and got all the desired 3rd party libs installed except readline. A minor nuisance since it mostly only affects irb and history. Except I want irb history so I can use the up arrow key to recall commands.

I tried rb-readline but it was acting weird, with stray characters appearing and general wonkiness that I can't describe. Instead, I installed rawline and modified the irb/completion.rb file so that it requires rawline instead of readline.

Works like a champ.

Update: Also, put "require 'irb/completion'" in your .irbrc file and make sure your HOME env is set. You may need to replace instances of Readline with Rawline in irb/completion.rb.