find_last_unchanged_at_beg_row 21492 src/xdisp.c    static struct glyph_row *find_last_unchanged_at_beg_row (struct window *);
find_last_unchanged_at_beg_row 22120 src/xdisp.c      last_unchanged_at_beg_row = find_last_unchanged_at_beg_row (w);