[Fix #10140] Fix false positive for Layout/DotPosition when a heredoc receives a method on the same line as the start sigil in trailing style

changelog/fix_fix_false_positive_for_layoutdotposition.md

@@ -0,0 +1 @@
+* [#10140](https://github.com/rubocop/rubocop/issues/10140): Fix false positive for `Layout/DotPosition` when a heredoc receives a method on the same line as the start sigil in `trailing` style. ([@dvandersluis][])

lib/rubocop/cop/layout/dot_position.rb

@@ -68,14 +68,18 @@ def message(dot)
         end
 
         def proper_dot_position?(node)
-          receiver_line = receiver_end_line(node.receiver)
           selector_line = selector_range(node).line
 
-          # receiver and selector are on the same line
-          return true if selector_line == receiver_line
+          # If the receiver is a HEREDOC and the selector is on the same line
+          # then there is nothing to do
+          return true if heredoc?(node.receiver) && node.receiver.loc.first_line == selector_line
 
+          receiver_line = receiver_end_line(node.receiver)
           dot_line = node.loc.dot.line
 
+          # receiver and selector are on the same line
+          return true if selector_line == receiver_line
+
           # don't register an offense if there is a line comment between the
           # dot and the selector otherwise, we might break the code while
           # "correcting" it (even if there is just an extra blank line, treat

spec/rubocop/cop/layout/dot_position_spec.rb

@@ -465,5 +465,15 @@
         RUBY
       end
     end
+
+    context 'when there is a heredoc with a following method' do
+      it 'does not register an offense' do
+        expect_no_offenses(<<~RUBY)
+          <<~HEREDOC.squish
+            something
+          HEREDOC
+        RUBY
+      end
+    end
   end
 end