Issue #17384 has been reported by tjdgnsqn133 (Kim Seonghoon).

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Feature #17384: shorthand of Hash#merge
https://bugs.ruby-lang.org/issues/17384

* Author: tjdgnsqn133 (Kim Seonghoon)
* Status: Open
* Priority: Normal
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Hi, all.
When I used Hash#merge, I thought it is uncomfortable.

``` ruby
a = {k: 1}
b = {j: 2}
c = a.merge(b)
```

If hash provides + like array, so useful.



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