patch 9.1.0310: Filler lines not checked properly in get_scroll_overlap() Commit: https://github.com/vim/vim/commit/92325540876252eb7375e34ff8f92cd4265fa7ae Author: zeertzjq <zeertzjq@outlook.com> Date: Fri Apr 12 18:38:38 2024 +0200 patch 9.1.0310: Filler lines not checked properly in get_scroll_overlap() Problem: Filler lines not checked properly in get_scroll_overlap(). Solution: Add missing parentheses (zeertzjq). The missing parentheses causes the second argument to diff_check_fill() to always be 0 as it is the result of a comparison between a positive integer and -1 (the value of BACKWARD), in which case diff_check_fill() always returns 0 instead of the number of filler lines above a line. It's very hard to add a test for this, because this mistake at most leads to 2 screen lines of difference in scrolling behavior, and in cases where it may indeed lead to a difference in behavior, neither behavior achieves complete symmetry between CTRL-F and CTRL-B. closes: #14527 Signed-off-by: zeertzjq <zeertzjq@outlook.com> Signed-off-by: Christian Brabandt <cb@256bit.org>