[ruby-core:96057] [Ruby master Bug#16389] Unexpected tINTEGER in conditional expression

Issue #16389 has been reported by codinganarchy (Matthew Tanous).

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Bug #16389: Unexpected tINTEGER in conditional expression
https://bugs.ruby-lang.org/issues/16389

* Author: codinganarchy (Matthew Tanous)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.6.4p104 (2019-08-28 revision 67798) [x86_64-darwin18]
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN
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I'm not sure that this is a bug, or simply an unexpected result of operator precedence, but I am seeing a result that appears to me to be an issue.

When putting a conditional expression after a command call using `unless`, I am seeing a syntax error when I believe the syntax should be valid. In particular:

```ruby
def foo
    puts "This method just has to exist"
end

foo unless (@bar&.nil? && @baz&.> 15)
```

This produces`syntax error, unexpected tINTEGER, expecting ')'`  following the `&.>` safe navigation. I would not expect a syntax error here.

This seems a strange result to me, as `foo unless (@bar&.nil? and @baz&.> 15)` appears to work as expected, producing no syntax error.

Please let me know if I am missing something in either my expectation or the issue report. Thanks!





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