[ruby-core:115818] [Ruby master Bug#20052] reline behaves oddly with redirect (non tty)

Issue #20052 has been updated by vo.x (Vit Ondruch).


Since there was no upstream response, I'll ask here if somebody can look into the issue. Workarounds such as "install readline-ext" are suboptimal and against changes done in Ruby 3.3 on purpose.

----------------------------------------
Bug #20052: reline behaves oddly with redirect (non tty)
https://bugs.ruby-lang.org/issues/20052#change-105767

* Author: mtasaka (Mamoru TASAKA)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.3.0dev (2023-12-09 master 1cbe114d1c) [x86_64-linux]
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
----------------------------------------
Forwarded from cucumber/aruba testsute issue https://github.com/cucumber/aruba/issues/910

Looks line reline behaves oddly with redirect (non tty)

With `ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-linux]` and `Readline`:
```
$ echo 'foo' | ruby -e 'require "readline"; puts Readline.readline(">")' > bar.log ; cat bar.log 
>foo
foo
```

With `ruby 3.3.0dev (2023-12-09 master 1cbe114d1c) [x86_64-linux]` and `Reline`:
```
$ echo 'foo' | ruby -e 'require "reline"; puts Reline.readline(">")' > bar.log ; cat bar.log 
>>>f>f>fo>fo>foo>foofoo
```



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