Problem:
Sometimes, when nvim sends the `win_viewport` event, for example when scrolling
with visible folds on the screen, it reports the `scroll_delta` value one batch
into "future". So when the client application is trying to show the new viewport
it's not yet updated, resulting in temporary corruption / screen flickering.
For more details see #23609, and starting from [this comment](
https://github.com/neovide/neovide/pull/1790#issuecomment-1518697747) in
https://github.com/neovide/neovide/pull/1790,, where the issue was first
detected. Note that some of the conclusions in those are not fully accurate, but
the general observations are.
Solution:
When there are pending updates to a Window, delay the `win_viewport` UI event
until the updates are sent. This ensures that there's no flush between sending
the viewport and updating of the lines corresponding to the new viewport.
Document the existing viewport behaviour (for cases where there are no
extra flushes), give a hint about how applications can deal with the slightly
surprising behaviour of the viewport event being sent after the updates.
Fixes https://github.com/neovim/neovim/issues/23609
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.
Problem: Line pointer becomes invalid when using spell checking.
Solution: Call ml_get() at the right places. (Luuk van Baal, closesvim/vim#12456)
e84c773d42
Problem: Incsearch not triggered when pasting clipboard register on the
command line.
Solution: Also set "literally" when using a clipboard register. (Ken Takata,
closesvim/vim#12460)
9cf6ab1332
Co-authored-by: K.Takata <kentkt@csc.jp>
Problem: SpellCap highlight not always updated when needed.
Solution: Handle updating line below closed fold and other situations where
only part of the window is redrawn. (Luuk van Baal, closesvim/vim#12428,
closesvim/vim#12420)
2ac6497f0e
fixes#23734
Get rid of the weird attr_pri dance which always seemed like a kludge:
if (!attr_pri) {
wlv.char_attr = hl_combine_attr(wlv.char_attr, extmark_attr);
} else {
wlv.char_attr = hl_combine_attr(extmark_attr, wlv.char_attr);
}
Instead combine extmark attrs with (old-skool) syntax attrs in a consistent way and then combine that with attr_pri and the rest in an _unified_ code path
fixes#23722
Co-authored-by: luukvbaal <luukvbaal@gmail.com>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Problem: Bad redrawing with spell checking, using "C" and "$" in 'cpo'.
Solution: Do not redraw the next line when "$" is in 'cpo'. (closesvim/vim#11285)
f3ef026c98
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: With spell checking, deleting a full stop at the end of a line
does not update SpellCap at the start of the next line.
Solution: Update the next line when characters have been deleted. Also when
using undo.
26f09ea54b
Co-authored-by: Bram Moolenaar <Bram@vim.org>
