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(Qkey_value_weak):  Removed.
(make_hash_table): Use nil, `key', `value', t for weakness.
(Fmake_hash_table): Ditto.
(copy_hash_table): New.
(Fcopy_hash_table): New.

to also match optional return value list of form `[X Y ... Z] = '.

new parameter.

well.
(redisplay_internal): Resize mini-window only if text might
have changed.
(display_echo_area): Reset displayed echo_area_buffer to nil
at the end if we're displaying a nil message.

point into mini-buffer prompt.
(backward-kill-sentence): Ditto.

new parameter.
(x_scroll_bar_create) [USE_TOOLKIT_SCROLL_BARS]: Clear
under scroll bar widget.

window's buffers equals current_buffer; this is not the
case during echo area display.

new parameter.
Remove conditional compilation on
NO_PROMPT_IN_BUFFER.
(get_next_display_element): Display \r as ^M.
(minibuffer_scroll_overlap): Removed because not used
anywhere.
(unwind_redisplay): Return nil.
(clear_garbaged_frames): New.
(redisplay_internal): Use it.
(echo_area_display): Ditto.
(resize_mini_window): Mew.
(display_echo_area_1): Use it to resize echo area window.
(redisplay_internal): Use it to resize active mini-window.
(echo_area_glyphs, echo_area_message,
echo_area_glyphs_length, previous_echo_glyphs,
previous_echo_area_message, previous_echo_area_glyphs_length):
Removed.
(Vmessage_stack, echo_area_buffer, echo_buffer,
display_last_displayed_message_p, Vwith_echo_area_save_vector): New.
(message2_nolog): Use set_message and clear_message.
(message3): Rename parameter len to nbytes to make clear what
it is.
(message3_nolog): Ditto.  Use set_message and clear_message.
(update_echo_area): Rewritten.
(with_echo_area_buffer): New.
(with_echo_area_buffer_unwind_data, unwind_with_area_buffer): New.
(setup_echo_area_for_printing): New.
(display_echo_area, display_echo_area_1): New.
(current_message, current_message_1): New.
(push_message, restore_message, pop_message,
check_message_stack): New.
(truncate_echo_area): Rewritten.
(truncate_message_1): New.
(set_message, set_message_1, clear_message): New.
(echo_area_display): Rewritten.
(redisplay_internal): Check for needed echo area update
differently.
(redisplay_preserve_echo_area): Rewritten.
(redisplay_window): Check for mini-window displaying echo area
message differently.
(syms_of_xdisp): Initialize Vmessage_stack and echo area buffers.
Remove initialzation of removed variables.
(init_xdisp): Remove references to removed variables.

and previous_echo_glyphs.

new parameter.

(glyph_len, str_to_glyph_cpy, str_to_glyph_ncpy,
glyph_to_str_cpy):  Remove that section because GLYPHs are no
longer used in that way.
(PRINTDECLARE): Add multibyte.
(PRINTPREPARE, PRINTFINISH): Handle printcharfun t differently.
(printbufidx): Removed.
(printchar, strout): Rewritten.

NO_PROMPT_IN_BUFFER.
(Fminibuffer_prompt_end): New.
(syms_of_minibuf): Defsubr it.  Remove
minibuffer-prompt-in-buffer.
(Fminibuffer_prompt_width): Return 0 if not in mini-buffer.
Extend documentation.
(read_minibuf): Use clear_message instead of
setting echo_area_glyphs.
(Fminibuffer_completion_help): Ditto.

Add function prototypes and extern declarations for
new functions and variables.

new parameter.
(ok_to_echo_at_next_pause): Make it a pointer to
a struct kboard.
(echo_kboard): New.
(echo_now): Set echo_kboard to the current kboard.
(cancel_echoing): Set echo_kboard to null.
(cmd_error_internal): Use clear_message, remove references
to echo_area_glyphs and echo_area_message.
(command_loop_1): Check for echo area messages differently.
(read_char): Likewise.
(record_menu_key): Use clear_message.
(Fexecute_extended_command):  Check for echo area messages
differently.  Use push_message, restore_message, pop_message.

new parameter.
Remove references to echo_area_glyphs
and previous_echo_glyphs.

function.
(hash_remove): Ditto.
(cmpfn_eq): Removed.
(cmpfn_eql): Don't test with EQ.
(cmpfn_equal): Ditto.
(make_hash_table): Set comparison function for `eq' to null.

pop_message.

(Fcurrent_message): Rewritten.

(change_frame_size): Ditto.
(change_frame_size_1): Ditto.  Deley size changes if redisplaying
and not called from a safe place.
(window_change_signal): Call change_frame_size with new parameter.
(set_window_cursor_after_update): Do the
cursor_in_echo_area case only for a mini-window showing
a message.  Don't let cursor end up after the end of a row.
(adjust_frame_message_buffer): Removed references
to echo_area_glyphs and previous_echo_glyphs.
(direct_output_for_insert): Check for mini-window displaying
echo area message differently.
(update_frame): Likewise.
(set_window_cursor_after_update): Likewise.  In echo area,
don't try to set cursor on rows that aren't enabled.

Change prototypes for do_pending_window_change
and change_frame_size.
Add function prototypes.

pop_message.

Remove test for minibuffer-prompt-in-buffer.
(kill-word): Don't move point into mini-buffer prompt.

Don't unwind-protect font-lock-fontify-region.

(HAVE_XAW3D): Don't check for Xaw3d if USE_X_TOOLKIT=none.

(tooltip-active): Option deleted.

under scroll bar with width FRAME_SCROLL_BAR_COLS.