(enlarge_window): Temporarily set resize_proportionally to make
sure that shrink_windows does scale the window proportionally.
(shrink_windows): When window has resize_proportionally set try
to shrink it proportionally by stealing from other windows.
(struct saved_window, Fset_window_configuration)
(compare_window_configurations): Handle resize_proportionally.
(WINDOW_TOTAL_SIZE): New macro.
(window_min_size, shrink_windows, size_window): Use it.
(check_min_window_sizes): Removed. Invalid values of
window-min-height|width are handled by window_min_size_2 now.
(size_window, Fsplit_window, enlarge_window)
(adjust_window_trailing_edge, grow_mini_window): Don't call
check_min_window_sizes.
(window_min_size_2, window_min_size_1, window_min_size): New
argument safe_p for retrieving "safe" minimum sizes.
(Fdisplay_buffer, Fsplit_window, enlarge_window):
(adjust_window_trailing_edge, grow_mini_window): Adjust
arguments of window_min_size... functions.
(shrink_windows): Argument min_size removed. New argument
safe_p allows shrinking windows to their safe minimum sizes.
Calculate minimum size and decide whether a window shall be
deleted for each window individually.
(size_window): When nodelete_p equals 2, tell shrink_windows to
delete windows only if their new minimum size is no more safe.
(shrink_window_lowest_first): Call window_min_size_1 to make
sure to preserve modeline of bottom-most window when resizing
the minibuffer.
(Fset_window_configuration, Fcurrent_window_configuration)
(compare_window_configurations): Do not handle
window-min-height|width any more.
(syms_of_window): Clarify window-min-height|width doc-strings.
some more. Copy some of the code from Ftry_completions.
Remove special case code that dates back to initial revision when the
slash was only added when necessary and that can't trigger nowadays.
(read-file-name-completion-ignore-case, insert-default-directory):
New vars, moved from fileio.c.
(read-file-name): New fun, moved from fileio.c.
* lisp/cus-start.el: Remove insert-default-directory and
read-file-name-completion-ignore-case.
* src/fileio.c (Vread_file_name_function, Vread_file_name_predicate)
(read_file_name_completion_ignore_case, insert_default_directory)
(Qdefault_directory): Move to minibuffer.el.
(Fread_file_name): Call the new `read-file-name' instead.
(tooltip-show-help-non-mode): Rewrite to better follow the behavior of the
C code (avoid overwriting a minibuffer, restore previous echo message, ...).
(tooltip-delay, tooltip-process-prompt-regexp, tooltip-strip-prompt): Simplify.
* keyboard.c (Vpre_help_message): Remove.
(show_help_echo): Remove default C code.
(saved_ts_script_language_on_focus) [USE_MAC_TSM]: Remove externs.
(XTread_socket) [USE_MAC_TOOLBAR]: Select window if its structure part
is clicked.
(x_activate_menubar): Remove extern for saved_menu_event_location.
(create_apple_event_from_drag_ref) [TARGET_API_MAC_CARBON]:
Move from mac.c.
* lwlib/Makefile.in (TOOLKIT_DEFINES): Remove.
* src/Makefile.in (TOOLKIT_DEFINES): Remove.
(LIBW): Use a bit less #if, remove left over OPEN_LOOK stuff.
