codeclimate/codeclimate-coffeelint

This cop checks that your heredocs are using meaningful delimiters. By default it disallows END and EO*, and can be configured through forbidden listing additional delimiters.

Example:

# good
<<-SQL
  SELECT * FROM foo
SQL

# bad
<<-END
  SELECT * FROM foo
END

# bad
<<-EOS
  SELECT * FROM foo
EOS