dualbus@debian:~/src/gnu/bash$ git diff -- lib/readline/display.c
diff --git a/lib/readline/display.c b/lib/readline/display.c
index d5536211..1f281cd3 100644
--- a/lib/readline/display.c
+++ b/lib/readline/display.c
@@ -2127,7 +2127,7 @@ dumb_update:
cpos_adjusted = 1;
}
-#if 1
+#ifdef HAVE_MULTIBYTE
/* If we write a non-space into the last screen column,
remove the note that we added a space to compensate for
a multibyte double-width character that didn't fit, since
--
Eduardo Bustamante
https://dualbus.me/