fix: bug: file names included in files when using -i option with multiple files

mrblib/rf/runner.rb

@@ -18,7 +18,7 @@ def self.run(...)
     # or when the recursive (-r) option is specified along with a directory.
     def with_filename?
       return true if config.with_filename
-      return false unless filter == Filter::Text
+      return false if filter != Filter::Text || in_place
 
       files.size > 1 || (recursive? && File.directory?(files.first))
     end

spec/global_options/in_place_option_spec.rb

@@ -24,4 +24,24 @@
       it { expect(file_content).to eq "bar\n" }
     end
   end
+
+  context 'when multiple files are given' do
+    before do
+      write_file('test1', 'abc')
+      write_file('test2', 'bac')
+    end
+
+    let(:args) do
+      %(-i 'gsub(/a/, "A")' test1 test2)
+    end
+    let(:expect_output) { '' }
+
+    it_behaves_like 'a successful exec' do
+      let(:test1) { read_file('test1') }
+      let(:test2) { read_file('test2') }
+
+      it { expect(test1).to eq "Abc\n" }
+      it { expect(test2).to eq "bAc\n" }
+    end
+  end
 end