1 files changed, 10 insertions, 5 deletions
diff --git a/lib/irb/input-method.rb b/lib/irb/input-method.rb
index 9dd8ca26c8..64b1e018d9 100644
--- a/lib/irb/input-method.rb
+++ b/lib/irb/input-method.rb
@@ -222,12 +222,17 @@ module IRB
       end
       Reline.completion_append_character = nil
       Reline.completion_proc = IRB::InputCompletor::CompletionProc
-      if IRB.conf[:USE_COLORIZE]
-        Reline.output_modifier_proc = proc do |output|
-          next unless IRB::Color.colorable?
-          IRB::Color.colorize_code(output)
+      Reline.output_modifier_proc =
+        if IRB.conf[:USE_COLORIZE]
+          proc do |output|
+            next unless IRB::Color.colorable?
+            IRB::Color.colorize_code(output)
+          end
+        else
+          proc do |output|
+            Reline::Unicode.escape_for_print(output)
+          end
         end
-      end
       Reline.dig_perfect_match_proc = IRB::InputCompletor::PerfectMatchedProc
     end