degesch: fix Ctrl-J in Readline

degesch.c

@@ -12522,6 +12522,9 @@ app_readline_init (void)
 	//   our dear user could potentionally rig things up in a way that might
 	//   result in some funny unspecified behaviour
 
+	// For vi mode, enabling "show-mode-in-prompt" is recommended as there is
+	// no easy way to indicate mode changes otherwise.
+
 	rl_add_defun ("send-line", on_readline_return, -1);
 	bind_common_keys (ctx);
 
@@ -12531,6 +12534,7 @@ app_readline_init (void)
 
 	// We need to hide the prompt and input first
 	rl_bind_key (RETURN, rl_named_function ("send-line"));
+	CALL_ (self, bind_control, 'j', "send-line");
 
 	rl_variable_bind ("completion-ignore-case", "on");
 	rl_bind_key (TAB, rl_named_function ("menu-complete"));