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than for each window.

excluding menu-bar and tool-bar.
(Fwhere_is_internal): Check ascii_sequence_p when looking up the cache.
(menu_item_p): Remove.
(where_is_internal_1): Don't ignore menu-items.

condition is that PT is at the end of the row, and should
be displayed at the start of the next row.

visible line, end we already decided to scroll, return -1.

currently displaying a message.

face cache is null, make one.

thoroughly.

position on vertical line between mode lines.

Don't alter tip_frame or tip_window.
(unwind_create_tip_frame): Set tip_frame to nil only if frame
was deleted.

updated, i.e. do it depending on real work done, and not on the
vpos of the line.