[ruby-core:115666] [Ruby master Bug#20051] Op asgn calls handle keywords and keyword splats as positional arguments

Issue #20051 has been updated by jeremyevans0 (Jeremy Evans).


I submitted a pull request to fix this issue: https://github.com/ruby/ruby/pull/9172 

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Bug #20051: Op asgn calls handle keywords and keyword splats as positional arguments
https://bugs.ruby-lang.org/issues/20051#change-105603

* Author: jeremyevans0 (Jeremy Evans)
* Status: Open
* Priority: Normal
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN
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Ruby passes a keywords given to op asgn method calls as a positional hash argument, both to `[]` and `[]=`:

```ruby
foo[kw: 1] += bar
```

This seems wrong, because `foo[kw: 1]` passes `kw: 1` as keywords.

Worse, Ruby passes a keyword splat given to the op asgn method calls as a regular positional argument to `[]` and `[]=`, with no `to_hash` conversion:


```ruby
foo[**kw] += bar
```

Example:

```ruby
[1][**0] += 2
# => 3
```

I'll try to fix this before the 3.3 release if I have time, but if anyone else wants to work on a fix, please do so.



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