Prompt for non-existent new file when using edit.m from GUI (bug #40450) * libgui/src/octave-qt-link.cc(do_prompt_new_edit_file): New function to display question dialog. * libgui/src/octave-qt-link.h(do_prompt_new_edit_file): Add function to header file. * libinterp/corefcn/octave-link.cc(__octave_link_edit_file__): If 2nd argument present, display prompt dialog. * libinterp/corefcn/octave-link.h(prompt_new_edit_file): If octave-link enabled, use prompt dialog box. * scripts/miscellaneous/edit.m: Modify to use new prompt routine. CLI behavior is unchanged.

6d4e36653a40da6604507406f2a97e3e64bf9dbf gnulib-hg