[ruby-core:45256] [ruby-trunk - Feature #6130] inspect using to_s is pain

Issue #6130 has been updated by Eregon (Benoit Daloze).

File 0002-test-ruby-test_object.rb-test_inspect-add-tests-for-.patch added

I attach the updated tests (sorry about the delay :/).
Please comment is something is wrong.

After speaking with Yusuke, it seems best to not include a (complete) specification for #inspect in RubySpec yet, because the exact #inspect format might be an implementation detail.

However I'd like to add the behavior change (not calling #to_s anymore) to RubySpec after this has been merged.
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Feature #6130: inspect using to_s is pain
https://bugs.ruby-lang.org/issues/6130#change-26837

Author: trans (Thomas Sawyer)
Status: Assigned
Priority: Normal
Assignee: mame (Yusuke Endoh)
Category: core
Target version: 2.0.0


Every time I define #to_s on a class I have to remember to also redefine #inspect. It's annoying and has led me to waste hours debugging b/c the errors that can occur from it often seem strange and unrelated.

I think #inspect should have an independent definition that outputs the class name, object_id and when possible instance variable settings, and should have nothing to do with #to_s by default. We developers can always alias it as such if it is appropriate.

The only exception should be for classes that have literal representation in Ruby, such as Array, String, Hash, etc. In those cases the #inspect should give the literal representation.




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