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Sat, 04 Dec 2021 15:38:49 +0800
What does the "value" in the comment on top of `try_scrolling' refer to?
Try scrolling PT into view in window WINDOW. JUST_THIS_ONE_P means
only WINDOW is redisplayed in redisplay_internal. TEMP_SCROLL_STEP
has the same meaning as emacs_scroll_step, and is used in
redisplay_window to bring a partially visible line into view in the
case that only the cursor has moved.
LAST_LINE_MISFIT should be true if we're scrolling because the last
screen line's vertical height extends past the end of the screen.
1 if scrolling succeeded
0 if scrolling didn't find point.
-1 if new fonts have been loaded so that we must interrupt redisplay,
adjust glyph matrices, and try again.
Does it mean the return value of try_scrolling? If so, I don't
understand how 0 (SCROLLING_SUCCESS) is returned if it can't find point,
and how -1 can be returned at all.
Am I missing something here?
- try_scrolling question,
Po Lu <=