allow gui to force readline to return from its idle/read loop * cmd-edit.h, cmd-edit.cc (command_editor::interrupt, command_editor::do_interrupt): New functions. (gnu_readline::do_interrupt): New function. * oct-rl-edit.h, oct-rl-edit.c (octave_rl_done): New function. * main-window.cc (main_window::debug_step_into_callback, main_window::debug_step_over_callback, main_window::debug_step_out_callback): Call command_editor::interrupt. * input.cc (get_debug_input): Reset command_editor::interrutp state. If previous state is true, then exit early.

--- a/liboctave/util/oct-rl-edit.c
+++ b/liboctave/util/oct-rl-edit.c
@@ -218,6 +218,12 @@
   return retval;
 }
 
+void
+octave_rl_done (int arg)
+{
+  rl_done = arg;
+}
+
 char *
 octave_rl_filename_completion_function (const char *text, int state)
 {