Bug #17377: A warning message doesn't display using -W option on irb

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.0.0preview1 (2020-09-25 master 0096d2b895) [x86_64-darwin19]
• Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN

[ima1zumi (Mari Imaizumi)]

Expected

Using -W option, a warning statement display when deprecated method call.

$ irb -W
irb(main):001:0> Object.tainted?
(irb):1: warning: Object#tainted? is deprecated and will be removed in Ruby 3.2
=> false

Actual

Although using -W option, a warning statement doesn't display when deprecated method call.

~/development/sandbox
$ ruby -v
ruby 3.0.0preview1 (2020-09-25 master 0096d2b895) [x86_64-darwin19]

~/development/sandbox
$ irb -v
irb 1.2.7 (2020-09-19)

~/development/sandbox
$ irb -W
irb(main):001:0> Object.tainted?
=> false

[osyo (manga osyo)]

Thanks issues :)
There was no warning message in Ruby 3.0.0.0dev either.

~ $ irb -W
irb(main):001:0> RUBY_DESCRIPTION
=> "ruby 3.0.0dev (2020-12-08T10:37:42Z master 09229c71bc) [x86_64-linux]"
irb(main):002:0> IRB::VERSION
=> "1.2.7"
irb(main):003:0> Object.tainted?
=> false
irb(main):004:0>

[jeremyevans0 (Jeremy Evans)]

irb -W only sets $VERBOSE = true, it doesn't enable deprecation warnings, unlike ruby -W. Similar issue with irb -w. I've submitted a pull request to irb: https://github.com/ruby/irb/pull/145

[aycabta (aycabta .)]

• Status changed from Open to Closed

Thank you for reporting and the Pull Request!