Tab selection crash fix

This fixes the selection crash that people are seeing and makes my selection optimisation work properly. The main problems were XtNameToWidget not handling `.' and Fset_window_configuration nuking the subwindow instance cache. There is still a redisplay glitch but that appears to be something to do with the actual gutter/glyph redisplay code rather than the glyph handling changes I have made recently. I will fix when I can figure out what is going wrong. Martin - unless this leads to more crashes I would go ahead and release 21.2.36 Thanks andy 2000-08-18 Andy Piper <andy(a)xemacs.org&gt; * frame.c (delete_frame_internal): use new free_frame_subwindow_instances name. * glyphs-msw.c (mswindows_tab_control_instantiate): verify index. (add_tab_item): make return type correct. (mswindows_tab_control_instantiate): assert index of tab. (mswindows_tab_control_redisplay): Re-code to use gui_item_equal_sans_selected and gui_item_list_find_selected. * glyphs-widget.c (tab_control_update): Correct comment. * window.c (window_unmap_subwindows): use new unmap_subwindow_instance_cache_mapper. (window_unmap_subwindows_cache_mapper): deleted. (Fset_window_configuration): comparisons should now be with EQ. Preserve the subwindow instance cache across configuration changes. (allocate_window): ditto. (make_dummy_parent): ditto. * glyphs.c (free_frame_subwindow_instances): rename from free_frame_subwindow_instance_cache. finalize all instances rather than just those in the display cache. (finalize_all_subwindow_instances): walk windows unmapping and finalizing subwindows. (unmap_subwindow_instance_cache_mapper): moved from window.c. Allow finalization as well as unmapping. * gui.c (gui_item_list_find_selected): new function. * gui.h (gui_item_list_find_selected): declare. * glyphs-x.c (x_tab_control_redisplay): pick tab explicitly. Re-code to use gui_item_equal_sans_selected and gui_item_list_find_selected. * glyphs-x.h: add lwlib-utils.h * buffer.c (Frecord_buffer): undo previous change. -------------------------------------------------------------- Dr Andy Piper Principal Consultant, BEA Systems Ltd