Issue #15442 has been reported by ana06 (Ana Maria Martinez Gomez).

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Bug #15442: irb behaves strange in Ruby 2.6
https://bugs.ruby-lang.org/issues/15442

* Author: ana06 (Ana Maria Martinez Gomez)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: Ruby 2.6 (trunk)
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN
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When trying to press the UP, DOWN, LEFT and RIGHT keys in Ruby 2.6 strange characters are printed instead of moving (or showing the last executed instruction). This works properly for me in Ruby 2.5.

```
irb(main):004:0> ^[[A^[[A^[[B^[[C^[[D
```



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