[ruby-core:111240] [Ruby master Bug#19167] Object#inspect does not correctly show NilClass TrueClass and FalseClass stored in instance variables

["nobu (Nobuyoshi Nakada)" <noreply@ruby-lang.org>]

Issue #19167 has been updated by nobu (Nobuyoshi Nakada).


Essentially, this behavior is an "unofficial" feature for internal use only (not expected to be documented), so it has not been described in doc/extension.rdoc. 
>   Note: In the format string, "%"PRIsVALUE can be used for Object#to_s
>   (or Object#inspect if '+' flag is set) output (and related argument
>   must be a VALUE).  Since it conflicts with "%i", for integers in
>   format strings, use "%d".

And I inadvertently overlooked this side-effect.

As the conclusion, I'll remove this behavior and use another way for the error messages which used this behavior.
And I'll mark the code in ruby-spec with `ruby_bug`.

----------------------------------------
Bug #19167: Object#inspect does not correctly show NilClass TrueClass and FalseClass stored in instance variables
https://bugs.ruby-lang.org/issues/19167#change-100530

* Author: tompng (tomoya ishida)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.1.0p0 (2021-12-25 revision fb4df44d16) [x86_64-darwin20]
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------

~~~ruby
Object.new.instance_eval do
  @a = nil
  @b = NilClass
  @c = true
  @d = TrueClass
  @e = [nil, NilClass, true, TrueClass]
  puts self.inspect
end
# actual
# => #<Object:0x2f15e3c8 @a=nil, @b=nil, @c=true, @d=true, @e=[nil, NilClass, true, TrueClass]>
# expected
# => #<Object:0x2f15e3c8 @a=nil, @b=NilClass, @c=true, @d=TrueClass, @e=[nil, NilClass, true, TrueClass]>
~~~

---Files--------------------------------
0001-Fix-Object-inspect-with-NilClass-as-an-ivar.patch (751 Bytes)


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