Support Ruby 2.7's pattern matching for Lint/DuplicateBranch
#9930
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This PR supports Ruby 2.7's pattern matching for
Lint/DuplicateBranch
.When rubocop/rubocop-ast#192 is merged, please remove theLint::DuplicateBranch#case_match_branches(node)
private method and useAST::CaseMatchNode#branches
instead.And this PR uses rubocop/rubocop-ast#192 feature, so it requires RuboCop AST 1.8.0 or higher.
Before submitting the PR make sure the following are checked:
[Fix #issue-number]
(if the related issue exists).master
(if not - rebase it).bundle exec rake default
. It executes all tests and runs RuboCop on its own code.{change_type}_{change_description}.md
if the new code introduces user-observable changes. See changelog entry format for details.