Bug #18657: IRB raises exception when stdout is a pipe

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.2.0dev (2022-03-24T16:14:55Z master 33b13bd9f1) [x86_64-linux]
• Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN

[pjones (Peter Jones)]

When piping stdout to another process IRB fails:

lib/ruby/3.0.0/irb/input-method.rb:42:in `winsize': Inappropriate ioctl for device (Errno::ENOTTY)

For example:

echo n=1 | irb | cat

This bug was introduced in e468d9f49ca34f713c030c623f655a40370e186d and triggered by 8f9b1902f48b413bd161666630c878ad58418c04 and 555ea8334451c5ccd881e68b8b7ddc15745e66e3.

The attached patch fixes the bug and includes a test to demonstrate the issue.

[jeremyevans0 (Jeremy Evans)]

Can you please submit this as a pull request upstream?: https://github.com/ruby/irb/pulls

[jeremyevans0 (Jeremy Evans)]

irb pull request for this issue: https://github.com/ruby/irb/pull/353

[hsbt (Hiroshi SHIBATA)]

• Status changed from Open to Closed

This patch has been merged at https://github.com/ruby/irb/pull/353