[Fix #3511] Style/TernaryParentheses false positive (#3513)

Author: dreyks

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## master (unreleased)
 
+### Bug fixes
+
+[#3513](https://github.com/bbatsov/rubocop/pull/3513): Fix false positive in `Style/TernaryParentheses` for a ternary with ranges. ([@dreyks][])
+
 ## 0.43.0 (2016-09-19)
 
 ### New features

lib/rubocop/cop/style/ternary_parentheses.rb

@@ -91,7 +91,7 @@ def redundant_parentheses_enabled?
         end
 
         def parenthesized?(node)
-          node.source =~ /^\(.*\)$/
+          node.begin_type?
         end
 
         # When this cop is configured to enforce parentheses and the

spec/rubocop/cop/style/ternary_parentheses_spec.rb

@@ -168,6 +168,11 @@
                         'foo = (baz.foo? bar, baz) ? a : b'
       end
     end
+
+    context 'with condition including a range' do
+      it_behaves_like 'code without offense',
+                      '(foo..bar).include?(baz) ? a : b'
+    end
   end
 
   context 'when `RedundantParenthesis` would cause an infinite loop' do