AM> Details (substitute actual characters instead of (0xFF) and (0xCA)): AM> (put 'Cyrillic_HARDSIGN 'ascii-character ?\xff) ===> ?(0xFF) AM> (get 'Cyrillic_HARDSIGN 'ascii-character) ===> ?(0xFF) AM> But when I try to type that character, it shows AM> (0xCA) AM> and after that: AM> (get 'Cyrillic_HARDSIGN 'ascii-character) ===> ?(0xCA) AM> setting it again with `put' yields the same results. The only place where there is (put 'ascii-character x_keysym_to_character()) with hardcoded 8859-5 value is in maybe_define_x_key_as_self_inserting_character. I've used gdb, set breakpoint to maybe_define_x_key_as_self_inserting_character if (keysym == 0x6ff) (0x6ff == 1791 == Cyrillic_HARDSIGN) Every time I type HARDSIGN, breakpoint appears, with the following backtrace: (gdb) bt #0 maybe_define_x_key_as_self_inserting_character (keysym=1791, symbol=138277596) at /var/src/xemacs-21.4.1/src/event-Xt.c:188 #1 0x816531a in x_reset_key_mapping (d=0x8239058) at /var/src/xemacs-21.4.1/src/event-Xt.c:356 #2 0x81699e0 in emacs_Xt_mapping_action (w=0x84463c8, event=0xbffff62c) at /var/src/xemacs-21.4.1/src/event-Xt.c:864 #3 0x400fa683 in _XtMatchAtom () from /usr/X11R6/lib/libXt.so.6 #4 0x400faaeb in _XtMatchAtom () from /usr/X11R6/lib/libXt.so.6 #5 0x400fb004 in _XtTranslateEvent () from /usr/X11R6/lib/libXt.so.6 #6 0x400fb25d in _XtTraverseStateTree () from /usr/X11R6/lib/libXt.so.6 #7 0x400ce27d in XtCallCallbackList () from /usr/X11R6/lib/libXt.so.6 #8 0x400e3a4b in _XtRefreshMapping () from /usr/X11R6/lib/libXt.so.6 #9 0x400d96de in XtDispatchEvent () from /usr/X11R6/lib/libXt.so.6 #10 0x400e3f51 in XtAppProcessEvent () from /usr/X11R6/lib/libXt.so.6 #11 0x8168bb9 in emacs_Xt_next_event (emacs_event=0x840f970) at /var/src/xemacs-21.4.1/src/event-Xt.c:2703 #12 0x80d08ee in event_stream_next_event (event=0x840f970) at /var/src/xemacs-21.4.1/src/event-stream.c:499 #13 0x80d1a4c in next_event_internal (target_event=138475888, allow_queued=1) at /var/src/xemacs-21.4.1/src/event-stream.c:1959 #14 0x80d1de7 in Fnext_event (event=138475888, prompt=136251236) at /var/src/xemacs-21.4.1/src/event-stream.c:2178 #15 0x8091143 in Fcommand_loop_1 () at /var/src/xemacs-21.4.1/src/cmdloop.c:574 #16 0x80913bd in command_loop_1 (dummy=136251236) at /var/src/xemacs-21.4.1/src/cmdloop.c:494 . . . hope that next lines are irrelevant . . . As you see, there is x_reset_key_mapping() every time I type a Cyrillic character. I do not think it is feature.... Any thoughts? I have XFree 3.6.6 (-11potato, I'm running Debian). Thank you, --alexm