[Fix #14605] Fix false positive for Lint/EmptyInterpolation when interpolation is inside a %W literal

Author: dvandersluis

changelog/fix_fix_false_positive_for_lint_empty_interpolation_20251016150606.md

@@ -0,0 +1 @@
+* [#14605](https://github.com/rubocop/rubocop/issues/14605): Fix false positive for `Lint/EmptyInterpolation` when interpolation is inside a `%W` literal. ([@dvandersluis][])

lib/rubocop/cop/lint/empty_interpolation.rb

@@ -19,12 +19,23 @@ class EmptyInterpolation < Base
         MSG = 'Empty interpolation detected.'
 
         def on_interpolation(begin_node)
+          return if in_percent_literal_array?(begin_node)
+
           node_children = begin_node.children.dup
           node_children.delete_if { |e| e.nil_type? || (e.basic_literal? && e.str_content&.empty?) }
           return unless node_children.empty?
 
           add_offense(begin_node) { |corrector| corrector.remove(begin_node) }
         end
+
+        private
+
+        def in_percent_literal_array?(begin_node)
+          array_node = begin_node.each_ancestor(:array).first
+          return false unless array_node
+
+          array_node.percent_literal?
+        end
       end
     end
   end

spec/rubocop/cop/lint/empty_interpolation_spec.rb

@@ -82,4 +82,27 @@
       "this is the #{true}"
     RUBY
   end
+
+  it 'does not register an offense for an empty string interpolation inside a `%W` literal' do
+    expect_no_offenses(<<~'RUBY')
+      %W[#{''} one two]
+    RUBY
+  end
+
+  it 'does not register an offense for an empty string interpolation inside a `%I` literal' do
+    expect_no_offenses(<<~'RUBY')
+      %I[#{''} one two]
+    RUBY
+  end
+
+  it 'registers an offense for an empty string interpolation inside an array' do
+    expect_offense(<<~'RUBY')
+      ["#{''}", one, two]
+        ^^^^^ Empty interpolation detected.
+    RUBY
+
+    expect_correction(<<~RUBY)
+      ["", one, two]
+    RUBY
+  end
 end