The C-r in vi command mode is also incremental search

lib/reline/key_actor/vi_command.rb

@@ -37,7 +37,7 @@ class Reline::KeyActor::ViCommand < Reline::KeyActor::Base
     #  17 ^Q
     :ed_ignore,
     #  18 ^R
-    :ed_redisplay,
+    :ed_search_prev_history,
     #  19 ^S
     :ed_ignore,
     #  20 ^T