Fix multiple offense detection for Style/For

CHANGELOG.md

@@ -9,6 +9,7 @@
 ### Bug fixes
 
 * [#8810](https://github.com/rubocop-hq/rubocop/pull/8810): Fix multiple offense detection for Style/RaiseArgs. ([@pbernays][])
+* [#8809](https://github.com/rubocop-hq/rubocop/pull/8809): Fix multiple offense detection for Style/For. ([@pbernays][])
 
 ### Changes
 

lib/rubocop/cop/style/for.rb

@@ -49,8 +49,6 @@ class For < Base
 
         def on_for(node)
           if style == :each
-            return unless opposite_style_detected
-
             add_offense(node, message: PREFER_EACH) do |corrector|
               ForToEachCorrector.new(node).call(corrector)
             end
@@ -63,8 +61,6 @@ def on_block(node)
           return unless suspect_enumerable?(node)
 
           if style == :for
-            return unless opposite_style_detected
-
             add_offense(node, message: PREFER_FOR) do |corrector|
               EachToForCorrector.new(node).call(corrector)
             end

spec/rubocop/cop/style/for_spec.rb

@@ -48,6 +48,34 @@ def func
       RUBY
     end
 
+    it 'registers multiple offenses' do
+      expect_offense(<<~RUBY)
+        for n in [1, 2, 3] do
+        ^^^^^^^^^^^^^^^^^^^^^ Prefer `each` over `for`.
+          puts n
+        end
+        [1, 2, 3].each do |n|
+          puts n
+        end
+        for n in [1, 2, 3] do
+        ^^^^^^^^^^^^^^^^^^^^^ Prefer `each` over `for`.
+          puts n
+        end
+      RUBY
+
+      expect_correction(<<~RUBY)
+        [1, 2, 3].each do |n|
+          puts n
+        end
+        [1, 2, 3].each do |n|
+          puts n
+        end
+        [1, 2, 3].each do |n|
+          puts n
+        end
+      RUBY
+    end
+
     context 'auto-correct' do
       context 'with range' do
         let(:expected_each_with_range) do
@@ -249,6 +277,34 @@ def func
       RUBY
     end
 
+    it 'registers multiple offenses' do
+      expect_offense(<<~RUBY)
+        for n in [1, 2, 3] do
+          puts n
+        end
+        [1, 2, 3].each do |n|
+        ^^^^^^^^^^^^^^^^^^^^^ Prefer `for` over `each`.
+          puts n
+        end
+        [1, 2, 3].each do |n|
+        ^^^^^^^^^^^^^^^^^^^^^ Prefer `for` over `each`.
+          puts n
+        end
+      RUBY
+
+      expect_correction(<<~RUBY)
+        for n in [1, 2, 3] do
+          puts n
+        end
+        for n in [1, 2, 3] do
+          puts n
+        end
+        for n in [1, 2, 3] do
+          puts n
+        end
+      RUBY
+    end
+
     it 'registers an offense for a tuple of items' do
       expect_offense(<<~RUBY)
         def func