Issue #17411 has been reported by zverok (Victor Shepelev).

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Bug #17411: Syntax error with . in pattern
https://bugs.ruby-lang.org/issues/17411

* Author: zverok (Victor Shepelev)
* Status: Open
* Priority: Normal
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
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Code:

```ruby
version = {name: '2.6', released_at: Time.new(2018, 12, 25)}
version in {released_at: Time.new(2010)..Time.new(2020)}
#                            ^ syntax error, unexpected '.', expecting '}'

# This works:
range = Time.new(2010)..Time.new(2020)
version in {released_at: ^range}
#=> true
```
(Fails with all versions of the pattern matching, `in`, `=>` and `case ... in`, and on Ruby 2.7 too.)

Am I missing something about the syntax?..



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