From: Nobuyoshi Nakada <nobu@...>
Date: 2011-11-18T11:48:27+09:00
Subject: [ruby-core:41123] [ruby-trunk - Bug #5626][Feedback] io/console: Cannot disable raw mode


Issue #5626 has been updated by Nobuyoshi Nakada.

Status changed from Open to Feedback
Assignee set to Nobuyoshi Nakada
Target version set to 2.0.0

Misty De Meo wrote:
> There doesn't seem to be a way to disable tty raw mode from within a Ruby script. The tty can be stuck in raw mode on script termination if IO.console.raw! is used, or if a raw command like IO.console.getch is in a thread that is terminated.

Sure, it can be.
I'll add IO#cooked and IO#cooked! methods.
Thank you for pointing out.

> The documentation recommends following IO.console.raw! with #raw { ... } to restore the terminal, but this does not restore the terminal, either if IO.console.raw! is used or if a raw command is interrupted.

It sounds like a bug.
How can I reproduce it?

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Bug #5626: io/console: Cannot disable raw mode
http://redmine.ruby-lang.org/issues/5626

Author: Misty De Meo
Status: Feedback
Priority: Normal
Assignee: Nobuyoshi Nakada
Category: ext
Target version: 2.0.0
ruby -v: ruby 1.9.3p0 (2011-10-30 revision 33570) [x86_64-darwin11.2.0]


There doesn't seem to be a way to disable tty raw mode from within a Ruby script. The tty can be stuck in raw mode on script termination if IO.console.raw! is used, or if a raw command like IO.console.getch is in a thread that is terminated.

The documentation recommends following IO.console.raw! with #raw { ... } to restore the terminal, but this does not restore the terminal, either if IO.console.raw! is used or if a raw command is interrupted.

While I can use an external command like system("stty -raw"), I would rather be able to do this within IO.console. I can disable echo with IO.console.echo=, but that doesn't affect the raw mode.


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