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(note_mode_line_highlight): Store additional information about the
help-echo in help_echo_object and help_echo_pos.  Check both
`local-map' and `keymap' properties for changing the cursor
(note_mouse_highlight): Store additional information about the
help-echo in help_echo_object and help_echo_pos.
(note_tool_bar_highlight): Set help_echo_object to nil and
help_echo_pos to -1.
(XTread_socket): Use gen_help_event instead of filling
input_events manually.
(syms_of_xterm): Staticpro help_echo_object.

Add prototypes.

if HELP is a function, call it with OBJECT and POS as parameters
to get the help to display.
(gen_help_event, kbd_buffer_store_help_event): New functions.
(kbd_buffer_get_event): Construct the Lisp help-event differently.
(read_char): Call show_help_echo with new parameters.

default'face's fontset, not using the default fontset.

(syms_of_coding): Make it a Lisp variable.
(detect_coding_iso2022): If inhibit_iso_escape_detection is
nonzero, ignore ISO2022's escape sequence.

(construct_drag_n_drop, x_scroll_bar_handle_click)
(w32_read_socket): Always set `arg' member of input_events.

(x_scroll_bar_handle_click, SET_SAVED_MENU_EVENT, XTread_socket):
Always set `arg' member of input_events.
(construct_menu_click): Unused function removed.

(easy-menu-remove): Defalias to ignore.

allow entering nil as value.

(fortran-mode-menu): Reinstate customize entries.

XEmacs code.

frame_or_window slot of TOOL_BAR_EVENT input events instead of
consing.  For prefix events, store the frame in the `arg' slot of
the event, otherwise store the key there.
(XTread_socket): Instead of consing, use the frame_or_window slot
of HELP_EVENTs for the frame, and the `arg' slot for the help
string.

`arg' member of the input event; don't cons.
(menubar_selection_callback): Use the `arg' slot of input events
to queue additional information, instead of consing.

TOOL_BAR_EVENTs.
(w32_read_socket): Adapt to changes in HELP_EVENTs.

input events to queue additional information, instead of consing.

kbd_buffer_frame_or_window.  Now used for all Lisp objects
referenced from the input queue.
(kbd_buffer_store_event): Always use structure assignment for
copying input events.  Record all Lisp objects referenced from
events in kbd_buffer_gcpro.
(kbd_buffer_get_event): Construct Lisp `help-echo' events
differently from input events.  Test for prefix menu_bar_events
and TOOL_BAR_EVENTs differently.  Reset all slots used by an input
event in kbd_buffer_gcpro to nil.
(make_lispy_event) <TOOL_BAR_EVENT>: Treat an input event whose
frame_or_window is equal to its arg member as prefix events.
(stuff_buffered_input): Reset all slots in kbd_buffer_gcpro
used by an input event to nil.
(init_keyboard): Use two times the size of the input queue
for kbd_buffer_gcpro.
(syms_of_keyboard): Likewise.

USER_SIGNAL_EVENT.

(MENU_BAR_EVENT): Renamed from menu_bar_event.
(USER_SIGNAL_EVENT): Renamed from user_signal.

event when deciding what to send to the terminal.

things new in v21.  Remove load-path.  Fix type of
line-number-display-limit.

(scrolling_window): Remove debug code.