[Fix rubocop#7779] Fix a false positive for `Style/MultilineMethodCal…

…lIndentation` Fixes rubocop#7779. This PR fixes a false positive for `Style/MultilineMethodCallIndentation` when using Ruby 2.7's numbered parameter.
koic · Mar 7, 2020 · d8bdede · d8bdede
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -6,6 +6,10 @@
 
 * [#7654](https://github.com/rubocop-hq/rubocop/issues/7654): Support `with_fixed_indentation` option for `Layout/ArrayAlignment` cop. ([@nikitasakov][])
 
+### Bug fixes
+
+* [#7779](https://github.com/rubocop-hq/rubocop/issues/7779): Fix a false positive for `Style/MultilineMethodCallIndentation` when using Ruby 2.7's numbered parameter. ([@koic][])
+
 ## 0.80.1 (2020-02-29)
 
 ### Bug fixes

diff --git a/lib/rubocop/ast/node.rb b/lib/rubocop/ast/node.rb
@@ -291,7 +291,7 @@ def source_length
       ## Destructuring
 
       def_node_matcher :receiver, <<~PATTERN
-        {(send $_ ...) (block (send $_ ...) ...)}
+        {(send $_ ...) ({block numblock} (send $_ ...) ...)}
       PATTERN
 
       def_node_matcher :str_content, '(str $_)'

diff --git a/spec/rubocop/cop/layout/multiline_method_call_indentation_spec.rb b/spec/rubocop/cop/layout/multiline_method_call_indentation_spec.rb
@@ -248,6 +248,17 @@ def foo
         RUBY
       end
 
+      context '>= Ruby 2.7', :ruby27 do
+        it 'accepts methods being aligned with method that is an argument' \
+           'when using numbered parameter' do
+          expect_no_offenses(<<~RUBY)
+            File.read('data.yml')
+                .then { YAML.safe_load _1 }
+                .transform_values(&:downcase)
+          RUBY
+        end
+      end
+
       it 'accepts methods being aligned with method that is an argument in ' \
          'assignment' do
         expect_no_offenses(<<~RUBY)