Problem: Showing two characters for tab is limited.
Solution: Allow for a third character for "tab:" in 'listchars'. (Nathaniel
Braun, Ken Takata, closesvim/vim#3810)
83a52171ba
Using 'listchars' is a nice way to highlight tabs that were included by accident
for buffers that set 'expandtab'.
But maybe one does not want this for buffers that set 'noexpandtab', so now one
can use:
autocmd FileType go let &l:listchars .= ',tab: '
In vim, scrolling a window might mess up the cmdline. To keep it simple,
cmdline was always cleared for any window scroll. In nvim, where safe scrolling
is implemented in the TUI layer, this problem doesn't exist.
Clearing the message on scrolling, when we not do it e.g when switching tabs
is a bit weird, as the former is a much smaller context change.
A vim patch introduced the possibility to avoid the cmdlline clear for
redraws caused by async events. This case will now trivially be covered,
as the redraw is always avoided.
vim-patch:8.0.0592: if a job writes to a buffer screen is not updated
There is various places where 'conceallevel' and 'concealcursor'
necessitates additional redraws. This tries to separate the different
cases and handle each accordingly:
- Share code with 'cursorline' for the common case: vertical move of
cursor within the same window (concealcursor not active)
- Improve the logic for managing 'concealcursor' and switching modes:
test for the case where the new mode behaves differently from the
last one.
- Clarify the special case for horizontal movement within a line when
'concealcursor' is active, now there is an if-statement only for this
and not hidden in larger check mostly for the first point.
- Keep the special case for moving between windows as is.
update_single_line() was only used for 'concealcursor'. But 'cursorline'
has very similiar characteristics (redraw both lines on move cursor
between lines) and works without its own special entry point to the
redraw subsystem.
Later on 'concealcursor' and 'cursorline' could share more logic, but for
now make the former use standard redrawWinline(). Make sure it is called
before update_screen(), so that it is immediately visible.
Get rid of update_prepare() and update_finish(), and all issues from
them and their callsites not being in sync with changes to
update_screen()
Problem: When 'rnu' is set folded lines are not displayed correctly.
(Vitaly Yashin)
Solution: When only redrawing line numbers do draw folded lines.
(closesvim/vim#3484)
7701f30856
---
Explanation:
Before this patch, relative line numbers would update on a cursor
movement and overwrite fold highlighting in the line number columns.
Other operations can cause the fold highlighting to overwrite the line
number styles. Together, this causes the highlighting in the line number
columns to flicker back and forth while editing.
Test case: create `t.vim` with these contents:
set fdm=marker rnu foldcolumn=2
call setline(1, ["{{{1", "nline 1", "{{{1", "line 2"])
and then call `nvim -u NORC -S t.vim` and press `j`; observe that the fold
highlighting disappears.
Problem: Using "gt" sometimes does not redraw a tab. (Jason Franklin)
Solution: Always set must_redraw in redraw_all_later().
04b4e1a424
ref bf3250a8ad (r31852304)
> I fixed it in a more general way, in that if we don't find a window
> that doesn't have the redraw type set it, then it will not set
> must_redraw, even though that's clearly intended.
ref #9152
ref #9155
NA patches:
vim-patch:8.1.0698
vim-patch:8.1.0699
Problem: When concealing is active and the screen is resized in the GUI it
is not immediately redrawn.
Solution: Use update_prepare() and update_finish() from
update_single_line().
c10f0e7cb0
Decide whether to highlight the visual-selected character under the
cursor, depending on 'guicursor' style:
- Highlight if cursor is blinking or non-block (vertical, horiz).
- Do NOT highlight if cursor is non-blinking block.
Traditionally Vim's visual selection does "reverse mode", which perhaps
conflicts with the non-blinking block cursor. But 'guicursor' defaults
to a vertical bar for selection=exclusive, and this confuses users who
expect to see the text highlighted.
closes#8983
Note about shada.c:
- shada_read_next_item_start was intentionally shadowing `unpacked` and
`i` because many of the macros (e.g. ADDITIONAL_KEY) implicitly
depended on those variable names.
- Macros were changed to parameterize `unpacked` (but not `i`). Macros
like CLEAR_GA_AND_ERROR_OUT do control-flow (goto), so any other
approach is messy.
Problem: Segfault when pattern with \z() is very slow.
Solution: Check for NULL regprog. Add "nfa_fail" to test_override() to be
able to test this. Fix that 'searchhl' resets called_emsg.
bcf9442307closes#8788
- TUI: _never_ rely on BCE for implicit clearing, only explicit commands.
- TUI: use unibi_erase_chars when possible.
- TUI: use end-exclusive ranges for invalid and cleared areas
- screen: scrolling leaves scrolled in aree undefined. This is a
conservative change, a client assuming the old semantics will still
behave correctly.
- screen: factor out vsep handling from line drawing. This is needed
anyway for the multigrid refactor.
- screen: simplifications of win_do_lines
Avoid clearing the screen in most situations. NOT_VALID should be
equivalent to CLEAR unless some external force messed up the terminal,
for these situations <c-l> and :mode will still clear the screen.
Also eliminate some obsolete code in screen.c, that dealt with that in
vim drawing window 1 can mess up window 2, but this never happens in
nvim.
But what about slow terminals? There is two common meanings in which
a terminal is said to be "slow":
Most commonly (and in the sense of vim:s nottyfast) it means low
bandwidth for sending bytes from nvim to the terminal. If the screen is
very similar before and after the update_screen(CLEAR) this change
should reduce bandwidth. If the screen is quite different, but there is
no new regions of contiguous whitespace, clearing doesn't reduce
bandwidth significantly. If the new screen contains a lot of whitespace,
it will depend of if vsplits are used or not: as long as there is no
vsplits, ce is used to cheaply clear the rest of the line, so
full-screen clear is not needed to reduce bandwith. However a left
vsplit currently needs to be padded with whitespace all the way to the
separator. It is possible ec (clear N chars) can be used to reduce
bandwidth here if this is a problem. (All of this assumes that one
doesn't set Normal guibg=... on a non-BCE terminal, if you do you are
doomed regardless of this change).
Slow can also mean that drawing pixels on the screen is slow. E-ink
screens is a recent example. Avoiding clearing and redrawing the
unchanged part of the screen will always improve performance in these
cases.
