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it can be caused by either readline or console reasons
u should know more details to solve it

2006/11/13, Michael Glaesemann <grzm / seespotcode.net>:
>
>
> AnùÃal wrote:
>
> >   I have Ruby 1.8.5 installed in Ubuntu 6.06 (Kernel: 2.6.15-27-686 )
> > IRB works fine with special characters (like accented a, and tilded n)
> > but the arrow keys produce the following input:
> >
> >    Up: ^[[A
> >    Right: ^[[C
> >    Down: ^[[B
> >    Left: ^[[D
> >
> >    The other special keys: Insert, Home, Prev Page, Del, End and Nex
> > Page produce similar results.
>
> It looks like IRB might not be compiled with readline support. I'm
> not sure how to check this, however.
>
> Michael Glaesemann
> grzm seespotcode net
>
>
>
>

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