Commits on Apr 15, 2022

1. Fix an incorrect autocorrect for Style/SpecialGlobalVars …

   This PR fixes the following incorrect autocorrect for `Style/SpecialGlobalVars`
   when global variable as Perl name is used multiple times.
   
   Example:
   
   ```ruby
   % cat example.rb
   $*[0]
   $*[1]
   
   % bundle exec rubocop --only Style/SpecialGlobalVars -A
   Inspecting 3 files
   .C.
   
   Offenses:
   
   example.rb:1:1: C: [Corrected] Style/SpecialGlobalVars: Prefer $ARGV
   from the stdlib 'English' module (don't forget to require it) or ARGV
   over $*.
   $*[0]
   ^^
   example.rb:2:1: C: [Corrected] Style/SpecialGlobalVars: Prefer $ARGV
   from the stdlib 'English' module (don't forget to require it) or ARGV
   over $*.
   $*[1]
   ^^
   
   3 files inspected, 2 offenses detected, 2 offenses corrected
   ```
   
   This auto-correction will add `require 'English'` twice:
   
   ```ruby
   % cat example.rb
   require 'English'
   require 'English'
   $ARGV[0]
   $ARGV[1]
   ```
   
   This PR ensures that `require 'English'` is added only once:
   
   ```ruby
   % cat example.rb
   require 'English'
   $ARGV[0]
   $ARGV[1]
   ```

   

   koic committed Apr 15, 2022
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