[ruby-core:95038] [Ruby master Bug#16173] ENV.delete returns nil when name does not exist and block given

Issue #16173 has been updated by Eregon (Benoit Daloze).


IMHO it's better to fix behavior to be consistent with Hash#delete.
And the compatibility risk seems non existent here.

So I think we should change behavior, and not change documentation which would be inconsistent with Hash#delete.
+1 for @nobu's patch.

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Bug #16173: ENV.delete returns nil when name does not exist and block given
https://bugs.ruby-lang.org/issues/16173#change-81669

* Author: [e-mail] (Burdette Lamar)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.6.4p104 (2019-08-28 revision 67798) [x64-mingw32]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
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Attached diff.txt:

* ENV.delete for nonexistent name and block given:
  * Test enhanced to verify return value is nil.
  * Documentation corrected to say that return value is nil, not value.


---Files--------------------------------
diff.txt (2.22 KB)


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