Problem: buffer text with composing chars are converted from UTF-8
to an array of up to seven UTF-32 values and then converted back
to UTF-8 strings.
Solution: Convert buffer text directly to UTF-8 based schar_T values.
The limit of the text size is now in schar_T bytes, which is currently
31+1 but easily could be raised as it no longer multiplies the size
of the entire screen grid when not used, the full size is only required
for temporary scratch buffers.
Also does some general cleanup to win_line text handling, which was
unnecessarily complicated due to multibyte rendering being an "opt-in"
feature long ago. Nowadays, a char is just a char, regardless if it consists
of one ASCII byte or multiple bytes.
We already have an extensive suite of static analysis tools we use,
which causes a fair bit of redundancy as we get duplicate warnings. PVS
is also prone to give false warnings which creates a lot of work to
identify and disable.
refactor: use a more idiomatic loop to iterate over the cells
There are two cases in which the following assertion would fail:
```c
assert(g->icell < g->ncells);
```
1. If `g->ncells = 0`. Update this to be legal.
2. If an EOF is reached while parsing `wrap`. In this case, the unpacker
attempts to resume from `cells`, which is a bug. Create a new state
for parsing `wrap`.
Reference: https://neovim.io/doc/user/ui.html#ui-event-grid_line
- Move vimoption_T to option.h
- option_defs.h is for option-related types
- option_vars.h corresponds to Vim's option.h
- option_defs.h and option_vars.h don't include each other
Linux added these types to their userspace headers in [6.5], which
causes unit tests to fail like
```
-------- Running tests from test/unit/api/private_helpers_spec.lua
RUN vim_to_object converts true: 17.00 ms ERR
test/unit/helpers.lua:748: test/unit/helpers.lua:732: (string) '
test/unit/helpers.lua:264: ';' expected near '__s128' at line 194'
exit code: 256
stack traceback:
test/unit/helpers.lua:748: in function 'itp_parent'
test/unit/helpers.lua:784: in function <test/unit/helpers.lua:774>
```
Since we don't use these types, they can be ignored to avoid LuaJIT's C
parser choking on them.
[6.5]: 224d80c584
The removes the previous restriction that nvim_buf_set_extmark()
could not be used to highlight arbitrary multi-line regions
The problem can be summarized as follows: let's assume an extmark with a
hl_group is placed covering the region (5,0) to (50,0) Now, consider
what happens if nvim needs to redraw a window covering the lines 20-30.
It needs to be able to ask the marktree what extmarks cover this region,
even if they don't begin or end here.
Therefore the marktree needs to be augmented with the information covers
a point, not just what marks begin or end there. To do this, we augment
each node with a field "intersect" which is a set the ids of the
marks which overlap this node, but only if it is not part of the set of
any parent. This ensures the number of nodes that need to be explicitly
marked grows only logarithmically with the total number of explicitly
nodes (and thus the number of of overlapping marks).
Thus we can quickly iterate all marks which overlaps any query position
by looking up what leaf node contains that position. Then we only need
to consider all "start" marks within that leaf node, and the "intersect"
set of that node and all its parents.
Now, and the major source of complexity is that the tree restructuring
operations (to ensure that each node has T-1 <= size <= 2*T-1) also need
to update these sets. If a full inner node is split in two, one of the
new parents might start to completely overlap some ranges and its ids
will need to be moved from its children's sets to its own set.
Similarly, if two undersized nodes gets joined into one, it might no
longer completely overlap some ranges, and now the children which do
needs to have the have the ids in its set instead. And then there are
the pivots! Yes the pivot operations when a child gets moved from one
parent to another.
This involves two redesigns of the map.c implementations:
1. Change of macro style and code organization
The old khash.h and map.c implementation used huge #define blocks with a
lot of backslash line continuations.
This instead uses the "implementation file" .c.h pattern. Such a file is
meant to be included multiple times, with different macros set prior to
inclusion as parameters. we already use this pattern e.g. for
eval/typval_encode.c.h to implement different typval encoders reusing a
similar structure.
We can structure this code into two parts. one that only depends on key
type and is enough to implement sets, and one which depends on both key
and value to implement maps (as a wrapper around sets, with an added
value[] array)
2. Separate the main hash buckets from the key / value arrays
Change the hack buckets to only contain an index into separate key /
value arrays
This is a common pattern in modern, state of the art hashmap
implementations. Even though this leads to one more allocated array, it
is this often is a net reduction of memory consumption. Consider
key+value consuming at least 12 bytes per pair. On average, we will have
twice as many buckets per item.
Thus old implementation:
2*12 = 24 bytes per item
New implementation
1*12 + 2*4 = 20 bytes per item
And the difference gets bigger with larger items.
One might think we have pulled a fast one here, as wouldn't the average size of
the new key/value arrays be 1.5 slots per items due to amortized grows?
But remember, these arrays are fully dense, and thus the accessed memory,
measured in _cache lines_, the unit which actually matters, will be the
fully used memory but just rounded up to the nearest cache line
boundary.
This has some other interesting properties, such as an insert-only
set/map will be fully ordered by insert only. Preserving this ordering
in face of deletions is more tricky tho. As we currently don't use
ordered maps, the "delete" operation maintains compactness of the item
arrays in the simplest way by breaking the ordering. It would be
possible to implement an order-preserving delete although at some cost,
like allowing the items array to become non-dense until the next rehash.
Finally, in face of these two major changes, all code used in khash.h
has been integrated into map.c and friends. Given the heavy edits it
makes no sense to "layer" the code into a vendored and a wrapper part.
Rather, the layered cake follows the specialization depth: code shared
for all maps, code specialized to a key type (and its equivalence
relation), and finally code specialized to value+key type.
Problem: Cannot use positional arguments for printf()
Solution: Support positional arguments in string formatting
closes: vim/vim#121400c6181fec4
Co-authored-by: Christ van Willegen <cvwillegen@gmail.com>
Problem: luals returns stricter diagnostics with bundled luarc.json
Solution: Improve some function and type annotations:
* use recognized uv.* types
* disable diagnostic for global `vim` in shared.lua
* docs: don't start comment lines with taglink (otherwise LuaLS will interpret it as a type)
* add type alias for lpeg pattern
* fix return annotation for `vim.secure.trust`
* rename local Range object in vim.version (shadows `Range` in vim.treesitter)
* fix some "missing fields" warnings
* add missing required fields for test functions in eval.lua
* rename lsp meta files for consistency
Adjust relevant Lua tests. Refactor testing logic for tv_get_string_*
functions into test_string_fn().
Note that vim_snprintf(), which is used for stringifying floats, always
calls xfree(tofree), even if tofree is NULL, so we need to expect that
in the alloc log.
Problem: Vim9: builtin function arguments not checked at compile time.
Solution: Add more type checks. (Yegappan Lakshmanan, closesvim/vim#8539)
5b73992d8f
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Here's the headline: when run in sync mode (last argument cb=NULL),
these functions don't actually use the uv_loop_t.
An earlier version of this patch instead replaced fs_loop with
using main_loop.uv on the main thread and luv_loop() on luv worker
threads. However this made the code more complicated for no reason.
Also arbitrarily, half of these functions would attempt to handle
UV_ENOMEM by try_to_free_memory(). This would mostly happen
on windows because it needs to allocate a converted WCHAR buffer.
This should be a quite rare situation. Your system is pretty
much hosed already if you cannot allocate like 50 WCHAR:s.
Therefore, take the liberty of simply removing this fallback.
In addition, we tried to "recover" from ENOMEM in read()/readv()
this way which doesn't make any sense. The read buffer(s) are already
allocated at this point.
This would also be an issue when using these functions on a worker
thread, as try_to_free_memory() is not thread-safe. Currently
os_file_is_readable() and os_is_dir() is used by worker threads
(as part of nvim__get_runtime(), to implement require from 'rtp' in
threads).
In the end, these changes makes _all_ os/fs.c functions thread-safe,
and we thus don't need to document and maintain a thread-safe subset.
Previously, there were three low-level delay entry points
- os_delay(ms, ignoreinput=true): sleep for ms, only break on got_int
- os_delay(ms, ignoreinput=false): sleep for ms, break on any key input
os_microdelay(us, false): equivalent, but in μs (not directly called)
- os_microdelay(us, true): sleep for μs, never break.
The implementation of the latter two both used uv_cond_timedwait()
This could have been for two reasons:
1. allow another thread to "interrupt" the wait
2. uv_cond_timedwait() has higher resolution than uv_sleep()
However we (1) never used the first, even when TUI was a thread, and
(2) nowhere in the codebase are we using μs resolution, it is always a ms
multiplied with 1000.
In addition, os_delay(ms, false) would completely block the thread for
100ms intervals and in between check for input. This is not how event handling
is done alound here.
Therefore:
Replace the implementation of os_delay(ms, false) to use
LOOP_PROCESS_EVENTS_UNTIL which does a proper epoll wait with a timeout,
instead of the 100ms timer panic.
Replace os_microdelay(us, false) with a direct wrapper of uv_sleep.
Problem: Only created files can be cleaned up with one call.
Solution: Add flags to mkdir() to delete with a deferred function.
Expand the writefile() name to a full path to handle changing
directory.
6f14da15ac
vim-patch:8.2.3742: dec mouse test fails without gnome terminfo entry
Problem: Dec mouse test fails without gnome terminfo entry.
Solution: Check if there is a gnome entry. Also fix 'acd' test on
MS-Windows. (Dominique Pellé, closesvim/vim#9282)
f589fd3e10
Cherry-pick test_autochdir.vim changes from patch 9.0.0313.
Cherry-pick test_autocmd.vim changes from patch 9.0.0323.
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: Vim9: script cannot use line continuation like in a :def function.
Solution: Pass the getline function pointer to the eval() functions. Use it
for addition and multiplication operators.
5409f5d8c9
Omit source_nextline() and eval_next_non_blank(): Vim9 script only.
N/A patches for version.c:
vim-patch:8.2.1048: build failure without the eval feature
Problem: Build failure without the eval feature.
Solution: Add dummy typedef.
9d40c63c7d
vim-patch:8.2.1052: build failure with older compilers
Problem: Build failure with older compilers.
Solution: Move declaration to start of block.
7acde51832
Co-authored-by: Bram Moolenaar <Bram@vim.org>
vim-patch:8.2.0695: Vim9: cannot define a function inside a function
Problem: Vim9: cannot define a function inside a function.
Solution: Initial support for :def inside :def.
04b1269783
vim-patch:8.2.0725: Vim9: cannot call a function declared later in Vim9 script
Problem: Vim9: cannot call a function declared later in Vim9 script.
Solution: Make two passes through the script file.
09689a0284
vim-patch:8.2.0734: Vim9: leaking memory when using :finish
Problem: Vim9: leaking memory when using :finish.
Solution: Do not check for next line in third pass.
04816717df
vim-patch:8.2.0753: Vim9: expressions are evaluated in the discovery phase
Problem: Vim9: expressions are evaluated in the discovery phase.
Solution: Bail out if an expression is not a constant. Require a type for
declared constants.
32e351179e
vim-patch:8.2.0818: Vim9: using a discovery phase doesn't work well
Problem: Vim9: using a discovery phase doesn't work well.
Solution: Remove the discovery phase, instead compile a function only when
it is used. Add :defcompile to compile def functions earlier.
822ba24743
vim-patch:8.2.0819: compiler warning for unused variable
Problem: Compiler warning for unused variable.
Solution: Remove the variable.
f40e51a880
vim-patch:8.2.0822: Vim9: code left over from discovery phase
Problem: Vim9: code left over from discovery phase.
Solution: Remove the dead code.
2eec37926d
Co-authored-by: Bram Moolenaar <Bram@vim.org>
libnvim couldn't be easily used in C++ due to the use of reserved keywords.
Additionally, add explicit casts to *alloc function calls used in inline
functions, as C++ doesn't allow implicit casts from void pointers.
System headers on macOS arm64 contain 128-bit numeric types. These types
are built into clang and GCC as extensions. Unfortunately, they break
the LuaJIT C importer. Define dummy typedefs for the missing numeric
types to satisfy the ffi C importer.
Problem: Cannot lock a variable in legacy Vim script like in Vim9.
Solution: Make ":lockvar 0" work.
a187c43cfe
Co-authored-by: Bram Moolenaar <Bram@vim.org>
unittests relied on the exact setup of coredumps on CI to detect
process crashing, and otherwise completely discarded errors.
Dectect child process failure reliably using process status, so that
unittests actually work locally as well.
Problem: Unable to customize the column next to a window ('gutter').
Solution: Add 'statuscolumn' option that follows the 'statusline' syntax,
allowing to customize the status column. Also supporting the %@
click execute function label. Adds new items @C and @s which
will print the fold and sign columns. Line numbers and signs
can be clicked, highlighted, aligned, transformed, margined etc.
Problem: Search error message doesn't show used pattern.
Solution: Pass the actually used pattern to where the error message is
given. (Rob Pilling, closesvim/vim#11742)
e86190e7c1
Co-authored-by: Rob Pilling <robpilling@gmail.com>
Problem: Handling 'statusline' errors is spread out.
Solution: Pass the option name to the lower levels so the option can be
reset there when an error is encountered. (Luuk van Baal,
closesvim/vim#11467)
7b224fdf4a
Before Vim patch 8.2.3468 relative_directory is never used in the
resulting path name, so whether it has a trailing slash didn't matter.
Now path_full_dir_name() appends a non-existing relative directory to
the current directory name, so the trailing slash needs to be kept.
Problem: map() returing zero for NULL list is unexpected.
Solution: Return the empty list. (closesvim/vim#7133)
ffdf8adfa8
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: The option.c file is too big.
Solution: Split off the code dealing with strings. (Yegappan Lakshmanan,
closesvim/vim#4937)
dac1347b4d
Cherry-pick set_string_option_direct_in_win() from patch 8.1.1405.
Cherry-pick shift_line() comment change from patch 8.1.2096.
Move 'clipboard' default parsing to didset_string_options().
Reorder option flags to put Nvim-only flags at the end.
problem: code for drawing statusline is arbitrarily spreadout between drawscreen.c, screen.c and buffer.c
solution: move it to a new file statusline.c
- rename archaic internal name "status match" to public name "wildmenu"
- showruler() does not show the ruler. it show anything which displays
info about the cursor. Rename it accordingy.
Problem: Some code in options.c fits better elsewhere.
Solution: Move functions from options.c to other files. (Yegappan
Lakshmanan, closesvim/vim#4889)
e677df8d93
Problem:
- Since c57f6b28d7#8519, sockets are created in ~/.local/… but XDG
spec says: "XDG_RUNTIME_DIR: Must be on the local filesystem", which
implies that XDG_STATE_DIR is potentially non-local.
- Not easy to inspect Nvim-created temp files (for debugging etc).
Solution:
- Store sockets in stdpath('run') ($XDG_RUNTIME_DIR).
- Establish "/tmp/nvim.user/" as the tempdir root shared by all Nvims.
- Make ok() actually useful.
- Introduce assert_nolog().
closes#3517closes#17093
Problem:
Dirs "config", "packaging", and "third-party" are all closely related
but this is not obvious from the layout. This adds friction for new
contributors.
Solution:
- rename config/ to cmake.config/
- rename test/config/ to test/cmakeconfig/ because it is used in Lua
tests: require('test.cmakeconfig.paths').
- rename packaging/ to cmake.packaging/
- rename third-party/ to cmake.deps/ (parallel with .deps/)
fs_init() must be called before early_init() in init/helpers.lua
If I run 'make unittest' on my Mac (macOS 10.14/Mojave or 12/Big Sur, intel
CPU), every test produce a core dump.
Call sequence in the core is:
early_init() main.c:197
set_init_1() option.c:508
runtimepath_default() runtime.c:1205
get_lib_dir() runtime.c:1175
os_isdir() fs.c:137
os_getperm() fs.c:777
os_stat() fs.c:761
fs_loop_lock() fs.c:72
uv_mutex_lock(&fs_loop_mutex) thread.c:352
abort()
.deps/build/src/libuv/src/unix/thread.c:
void uv_mutex_lock(uv_mutex_t* mutex) {
if (pthread_mutex_lock(mutex))
abort(); // line 352
}
So pthread_mutex_lock(&fs_loop_mutex) failed. The reason seems to be simple.
fs_init() was not called and fs_loop_mutex has not been initialized. fs_init()
was moved out from early_init() in main.c by
b87867e69e, but unit/helpers.lua was not updated
accordingly.
Most code in keymap.h is for keycode definitions, while most code in
keymap.c is for the parsing and conversion of keycodes.
The name "keymap" may also make people think these two files are for
mappings, while in fact keycodes are used even when no mappings are
involved, so "keycodes" should be a better file name than "keymap".
Problem: GUI tests fail because the test doesn't use a modifier.
Solution: Add "\{xxx}" to be able to encode a modifier.
ebe9d34aa0
Change macros to enums to use them in unit tests.
Problem: Cannot map <C-H> when modifyOtherKeys is enabled.
Solution: Add the <C-H> mapping twice, both with modifier and as 0x08. Use
only the first one when modifyOtherKeys has been detected.
459fd785e4
Add REPTERM_NO_SPECIAL instead of REPTERM_SPECIAL because the meaning of
"special" is different between Vim and Nvim.
Omit seenModifyOtherKeys as Nvim supports attaching multiple UIs.
Omit tests as they send terminal codes.
Keep the behavior of API functions.
Ref: #9342
Adds the option to have a single global statusline for the current window at the bottom of the screen instead of a statusline at the bottom of every window. Enabled by setting `laststatus = 3`.
Due to the fact that statuslines at the bottom of windows are removed when global statusline is enabled, horizontal separators are used instead to separate horizontal splits. The horizontal separator character is configurable through the`horiz` item in `'fillchars'`. Separator connector characters are also used to connect the horizontal and vertical separators together, which are also configurable through the `horizup`, `horizdown`, `vertleft`, `vertright` and `verthoriz` items in `fillchars`.
The window separators are highlighted using the `WinSeparator` highlight group, which supersedes `VertSplit` and is linked to `VertSplit` by default in order to maintain backwards compatibility.
This includes a partial port of Vim patch 8.2.2569 and some changes to
nvim_eval_statusline() to allow a multibyte fillchar. Literally every
line of C code touched by that patch has been refactored in Nvim, and
that patch contains some irrelevant foldcolumn tests I'm not sure how to
port (as Nvim's foldcolumn behavior has diverged from Vim's).
marktree.c was originally constructed as a "generic" datatype,
to make the prototyping of its internal logic as simple as possible
and also as the usecases for various kinds of extmarks/decorations was not yet decided.
As a consequence of this, various extra indirections and allocations was
needed to use marktree to implement extmarks (ns/id pairs) and
decorations of different kinds (some which is just a single highlight
id, other an allocated list of virtual text/lines)
This change removes a lot of indirection, by making Marktree specialized
for the usecase. In particular, the namespace id and mark id is stored
directly, instead of the 64-bit global id particular to the Marktree
struct. This removes the two maps needed to convert between global and
per-ns ids.
Also, "small" decorations are stored inline, i.e. those who
doesn't refer to external heap memory anyway. That is highlights (with
priority+flags) are stored inline, while virtual text, which anyway
occurs a lot of heap allocations, do not. (previously a hack was used
to elide heap allocations for highlights with standard prio+flags)
TODO(bfredl): the functionaltest-lua CI version of gcc is having
severe issues with uint16_t bitfields, so splitting up compound
assignments and redundant casts are needed. Clean this up once we switch
to a working compiler version.
Co-authored-by: Sean Dewar <seandewar@users.noreply.github.com>
Co-authored-by: Gregory Anders <greg@gpanders.com>
Co-authored-by: Sebastian Volland <seb@baunz.net>
Co-authored-by: Lewis Russell <lewis6991@gmail.com>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Problem: Problem with :cd when editing file in non-existent directory. (Yee
Cheng Chin)
Solution: Prepend the current directory to get the full path. (closesvim/vim#8903)
c6376c7984
Problem: Items in a list given to :const can still be modified.
Solution: Work like ":lockvar! name" but don't lock referenced items.
Make locking a blob work.
021bda5671
Problem: Cannot use octal numbers in scriptversion 4.
Solution: Add the "0o" notation. (Ken Takata, closesvim/vim#5304)
c17e66c5c0
:scriptversion is N/A.
Cherry-pick latest str2nr() doc changes from v8.1.2035.
Cherry-pick various mentions of the 0o prefix from:
- v8.2.2324
- 2346a63784
- 11e3c5ba82
- 82be4849ee
Patch used ascii_isbdigit() by mistake, which was fixed in v8.2.2309.
Make STR2NR_OOCT work the same as STR2NR_OCT when forcing.
In Vim, STR2NR_FORCE | STR2NR_OOCT isn't handled, and doesn't actually
force anything. Rather than abort(), make it work as STR2NR_OCT.
This means STR2NR_FORCE | STR2NR_OCT works the same as
STR2NR_FORCE | STR2NR_OOCT and STR2NR_FORCE | STR2NR_OCT | STR2NR_OOCT.
Problem: The str2nr() tests fail.
Solution: Add missing part of patch.
1ac90b4fa6
Add extra tests for quoted numbers in vim_str2nr_spec.lua, as the
included ones in this patch are somewhat lacking.
Problem: Obvious mistakes are accepted as valid expressions.
Solution: Be more strict about parsing numbers. (Yasuhiro Matsumoto,
closesvim/vim#3981)
16e9b85113
Update vim_str2nr_spec.lua to add more tests that use strict = true.
Remove syncolor.vim in favor of defining the default highlight groups
directly in `init_highlight`. This approach provides a number of
advantages:
1. The highlights are always defined, regardless of whether or not the
syntax regex engine is enabled.
2. Redundant sourcing of syntax files is eliminated (syncolor.vim was
often sourced multiple times based on how the user's colorscheme file
was written).
3. The syntax highlighting regex engine and the highlight groups
themselves are more fully decoupled.
4. Removal of the confusing `:syntax on` / `:syntax enable` dichotomy
(they now both do the same thing).
This approach also correctly solves a number of bugs related to
highlighting (#15176, #12573, #15205).
As per #14236, performing extmark cleanup in a certain namespace does
not guarantee removing all the extmarks inside given namespace.
The issue resides within the tree node removal method and results in
a couple of rare edge cases.
To demonstrate what causes this bug, I'll give an example covering one
of the edge cases.
=== AN EXAMPLE ===
(A) (B) (C) (D) (E)
--------- --------- --------- --------- ---------
<0, 1> <0, 1> <0, 1> <0, 1> <0, 1>
<0, 2> <0, 2> <0, 2> <0, 2> <0, 2>
<0, 3> <0, 3> <0, 3> <0, 3> <0, 3>
<0, 4> <0, 4> <0, 4> <0, 4> <0, 4>
<0, 5> <0, 5> <0, 5> <0, 5> <0, 5>
<0, 6> <0, 6> <0, 6> <0, 6> <0, 6>
<0, 7> <0, 7> <0, 7> <0, 7> <0, 7>
<0, 8> <0, 8> <0, 8> <0, 8> <0, 8>
<0, 9> <0, 9> * * <0, 9> * <0, 9>
[0, 10] * [0, 10] <0, 9> [0, 11] [0, 11]
[0, 11] [0, 11] [0, 11] [0, 12] [0, 12] *
[0, 12] [0, 12] [0, 12] [0, 13] [0, 13]
[0, 13] [0, 13] [0, 13] [0, 14] [0, 14]
[0, 14] [0, 14] [0, 14] [0, 15] [0, 15]
[0, 15] [0, 15] [0, 15] [0, 16] [0, 16]
[0, 16] [0, 16] [0, 16] [0, 17] [0, 17]
[0, 17] [0, 17] [0, 17] [0, 18] [0, 18]
[0, 18] [0, 18] [0, 18] [0, 19] [0, 19]
[0, 19] [0, 19] [0, 19] [0, 20] [0, 20]
[0, 20] [0, 20] [0, 20]
DIAGRAM EXPLANATION
* Every column is a state of the marktree at a certain stage.
* To make it simple, I don't draw the whole tree. What you see are
2 leftmost parent nodes ([0, 10], [0, 20]) and their children placed
in order `MarkTreeIter` would iterate through. From top to bottom.
* Numbers on this diagram represent extmark coordinates. Relative
positioning and actual mark IDs used by the marktree are avoided
for simplicity.
* 2 types of brackets around coordinates represent 2 different
extmark namespaces (`ns_id`s).
* '*' shows iterator position.
ACTUAL EXPLANATION
Let's assume, we have two sets of extmarks from 2 different plugins:
* Plugin1: <0, 1-9>
* Plugin2: [0, 10-20]
1. Plugin2 calls
`vim.api.nvim_buf_clear_namespace(buf_handle, ns_id, 0, -1)`
to clear all its extmarks which results in `extmark_clear` call.
2. The iteration process goes on ignoring extmarks with irrelevant
`ns_id` from Plugin1, until it reaches [0, 10], entering state (A).
3. At the end of cleaning up process, `marktree_del_itr` gets called.
This function is supposed to remove given node and, if necessary,
restructure the tree. Also, move the iterator to the next node.
The bug occurs in this function.
4. The iterator goes backwards to the node's last child, to put it
in the place of its deleted parent later. (B)
5. The parent node is deleted and replaced with its child node. (C)
6. Since now this node has 8 children, which is less than
`MT_BRANCH_FACTOR - 1`, it get's merged with the next node. (D)
7. Finally, since at (B) the iterator went backward, it goes forward
twice, skipping [0, 11] node, causing this extmark to persist,
causing the bug. (E)
ANALYSIS AND SOLUTION
The algorithm works perfectly when the parent node gets replaced by
its child, but no merging occurs. I.e. the exact same diagram,
but without the (D) stage. If not for (D), it would iterate to <0, 9>
and then to [0, 11]. So, iterating twice makes sense. The actual problem
is in (C) stage, because the iterator index isn't adjusted and still
pointing to no longer existent node. So my solution is to adjust
iterator index after removing the child node.
More info: https://github.com/neovim/neovim/pull/14719
Problem: Number of status line items is limited to 80.
Solution: Dynamically allocate the arrays. (Rom Grk, closesvim/vim#7181)
8133cc6bf4
The members of stl_item_T have not been prefixed with stl_ contrary to
the vim patch because the amount of stl_ prefixes on single lines of
code in that region was hurtful to readability.
Seems like redundant env var separators (";" on Windows) in $PATH can
cause weird behavior. From #7377:
> After some time, system(['win32yank', '-o']) and system('win32yank -o')
> start returning different results: specifically first returns an
> empty string.
>
> 1. $PATH weirdly contains double semicolon followed by path to the
> “installation directory” (unpacked directory from archive).
> 2. If I run `let $PATH=substitute($PATH, ';;', ';', 'g')` the problem is fixed.
close#7377
ref 224f99b85d
Problem: Comparing two NULL list fails.
Solution: Change the order of comparing two lists.
7b293c730b
N/A patches for version.c:
vim-patch:8.2.1187: terminal2 test sometimes hangs in the GUI on Travis
Problem: Terminal2 test sometimes hangs in the GUI on Travis.
Solution: Disable Test_zz2_terminal_guioptions_bang() for now.
c85156bb89
vim-patch:8.2.1188: memory leak with invalid json input
Problem: Memory leak with invalid json input.
Solution: Free all keys at the end. (Dominique Pellé, closesvim/vim#6443,
closesvim/vim#6442)
6d3a7213f5
vim-patch:8.2.1196: build failure with normal features
Problem: Build failure with normal features.
Solution: Add #ifdef.
83e7450053
vim-patch:8.2.1198: terminal2 test sometimes hangs in the GUI on Travis
Problem: Terminal2 test sometimes hangs in the GUI on Travis.
Solution: Move test function to terminal3 to see if the problem moves too.
a4b442614c
