Commits on Jun 12, 2021

1. Support one-line pattern matching syntax …

   This PR supports one-line pattern matching syntax for `Layout/SpaceAroundKeyword`
   and `Layout/SpaceAroundOperators`.
   
   `match-pattern` node changes differently in Ruby 2.7 and Ruby 3.0.
   
   ## Ruby 2.7 (`Parser::Ruby27`)
   
   ```console
   % ruby-parse -e '42 in foo'
   (match-pattern
     (int 42)
     (match-var :foo))
   ```
   
   ## Ruby 3.0 (`Parser::Ruby30`)
   
   ```console
   % ruby-parse -e '42 => foo'
   (match-pattern
     (int 42)
     (match-var :foo))
   ```
   
   And one-line `in` syntax that represents one-line pattern maching changes
   from `match-pattern` node to `match-pattern-p` in Ruby 3.0.
   
   ```console
   % ruby-parse -e '42 in foo'
   (match-pattern-p
   (int 42)
     (match-var :foo))
   ```

   

   koic committed Jun 12, 2021
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   b278827 View commit details

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