Commits on Feb 22, 2022

1. Fix an error when using regexp with non-encoding option …

   This PR fixes the following error when using regexp with non-encoding option.
   
   ```console
   % cat /tmp/example.rb
   /\x82/n =~ 'a'
   
   % rubocop -d /tmp/example.rb
   (snip)
   
   For /tmp: An error occurred while VariableForce cop was inspecting /tmp/example.rb.
   invalid multibyte escape: /\x82/
   /Users/koic/.rbenv/versions/3.1.0/lib/ruby/gems/3.1.0/gems/rubocop-1.25.1/lib/rubocop/cop/variable_force.rb:193:in
   `initialize'
   /Users/koic/.rbenv/versions/3.1.0/lib/ruby/gems/3.1.0/gems/rubocop-1.25.1/lib/rubocop/cop/variable_force.rb:193:in `new'
   ```
   
   This error is due to `VariableForce#regexp_captured_names` not processing the regexp option.
   This PR uses `RegexpNode#to_regexp` to prevent the regexp option from being cut.
   
   In addition, the test code replaces the Parser gem (plain) AST with `ProcessedSource#ast`
   so that it can call `RegexpNode#to_regexp` defined in the RuboCop AST.

   

   koic committed Feb 22, 2022
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