Problem: 'breakindent' is not drawn after diff filler lines.
Solution: Correct check for whether 'breakindent' should be drawn.
closes: vim/vim#13624588f20dece
Problem:
The next command after `silent !{cmd}` or `silent lua print('str')`
prints an empty line before printing a message, because these commands
set `msg_didout = true` despite not printing any messages.
Solution:
Set `msg_didout = true` only if `msg_silent == 0`
Problem:
Crash from:
set cmdheight=0 redrawdebug=invalid
resize -1
Solution:
Do not invalidate first `p_ch` `msg_grid` rows in `update_screen` when
scrolling the screen down after displaying a message, because they may
be used later for drawing cmdline.
Fixes#22154
Problem: A double-width char in a floating window causes an extra
space to be drawn to the left of its boundary.
Solution: Only reset skipstart at the first column.
Fix#24775
(cherry picked from commit 6b283f6e01)
Problem: Cannot break undo by setting 'undolevels' to itself in
'inccommand' preview callback.
Solution: Don't set an invalid 'undolevels' value.
Co-authored-by: Michael Henry <drmikehenry@drmikehenry.com>
(cherry picked from commit 7c5e7d831a)
Problem: 'inccommand' doesn't restore 'undolevels' properly for a
buffer shown in multiple windows.
Solution: Don't save information of a buffer twice.
Problem:
The cmdpreview saved undo nodes on cmdpreview_prepare() from ex_getln.c may
become invalid (free) if the preview function makes undo operations, causing
heap-use-after-free errors.
Solution:
Save the buffer undo list on cmdpreview_prepare)_ and start a new empty one. On
cmdpreview_restore_state(), undo all the entries in the new undo list and
restore the original one. With this approach, the preview function will be
allowed to undo only its own changes.
Fix#20036Fix#20248
Problem: Cannot drag a vertical separator to the right of a window
whose 'statuscolumn' is wider than itself.
Solution: Never treat a click on a vertical separator as a click on
'statuscolumn'.
(cherry picked from commit c0007e6300)
Redrawing of 'statusline' and 'winbar' are actually already inhibited by
RedawingDisabled in Ex mode.
In Vim there is a check for `msg_scrolled == 0` (which is false in Ex
mode) since Vim doesn't have msgsep. Add a `!exmode_active` check here
in Nvim instead.
(cherry picked from commit e056777a88)
Problem: Multibyte characters may be wrapped at the end of a line
when 'statuscolumn' and 'spell' are set.
Solution: Update line pointerdiff "v" before fetching the line pointer
after evaluating 'statuscolumn'.
(cherry picked from commit 5fa5fff184)
