As part of the refactoring in #5119, some vim_strchr() were changed to
strchr(). However, vim_strchr() behaves differently than strchr() when
c is NUL, returning NULL instead of a pointer to the NUL.
Revert the strchr() calls where it isn't known whether c is NUL, since
this causes a semantic change the surrounding code doesn't expect. In
the case of #6650, this led to a heap overrun.
Closes#6650
FEATURES:
bc4a2e1576 help, man.vim: "outline" (TOC) feature #516958422f17d8 'guicursor' works in the TUI (and sends info to UIs) #6423129f107c0c api: nvim_get_mode() #62470b59f988f4 api/ui: externalize tabline #6583bc6d868d00 'listchars': `Whitespace` highlight group #63676afa7d66cd writefile() obeys 'fsync' option #6427c60e409471 eval.c refactor (also improves some error messages) #51199d200cd0a3 getcompletion("cmdline") #63762ea7bfc627 terminal: Support extra arguments in 'shell'. #4504bf5110266c DirChanged autocmd #5928#62621743df82f9 'cpoptions': "_" flag to toggle `cw` behaviour #623522337b1c01 CTRL-R omits trailing ^M when pasting to cmdline #61370e44916fff :edit allows unescaped spaces in filename #6119abdbfd26bc eval: Add id() function and make printf("%p") useful #6095bdfa1479d2 findfile(), :find, gf work in :terminal. #60092f38ed11c9 providers: Disable if `g:loaded_*` exists.
b5560a69b1 setpos() can set lowercase marks in other buffers #57537c513d646d Throttle :! output, pulse "..." message. #5396d2e8c76dc2 v:exiting #5651
:terminal improvements #6185#6142
- cursor keeps position after leaving insert-mode.
- 4ceec30cd0 Follows output only if cursor is at end of buffer.
- e7bbd35c81 new option: 'scrollback'
- fedb8443d5 quasi-support for undo and 'modifiable'
- b45ddf731b disables 'list' by default
- disables 'relativenumber' by default
:help now contains full API documentation at `:help api`.
man.vim saw numerous improvements.
Windows support:
- Windows is no longer "experimental", it is fully supported.
- Windows package includes a GUI, curl.exe and other utilities.
"Vim 8" features: partials, lambdas.
SECURITY FIXES:
CVE-2017-5953 CVE-2017-6349 CVE-2017-6350 #6485
CHANGES:
NVIM_TUI_ENABLE_CURSOR_SHAPE was removed. Use 'guicursor' instead.
See https://github.com/neovim/neovim/wiki/Following-HEAD#2017040281525dc5c3 'mouse=a' is no longer the default. (This will probably
change again after it is improved.) #60220c1f783164 defaults: 'showcmd', 'belloff', 'ruler' #6087eb0e94f71b api: {get,set}_option update local options as appropriate #6405bdcb2a38b3 "Reading from stdin..." message was removed. #6298
FIXES:
12fc1defd6 ops: fix i<c-r> with multi-byte text #6524dd391bfca1 Windows: system() and friends #649713352c00f1 Windows: os_get_hostname() #641316babc6687 tui: Less-noisy mouse seqs #64113a9dd13f9e (vim bug) folding edge-cases #6207f6946c68ae job-control: set CLOEXEC on pty processes. #5986d1afd434f3 rplugin: Call s:LoadRemotePlugins() on startup.
1215084676 backtick-expansion works with `shell=fish` #6224e32ec03d67 tui: Improved behavior after resize. #620286c2adc074 edit.c: CTRL-SPC: Insert previously-inserted text. #6090c318d8e672 b:changedtick now follows VimL rules #611234e24cb2f7 terminal: Initialize colors in reverse order #6160e8899178ec undo: Don't set b_u_curhead in ex_undojoin() #5869d25649fa01 undo: :earlier, g-: Set b_u_seq_cur correctly. (#6016)
043d8ba422 'Visual-mode put from @. register' #578242c922b32c open_buffer(): Do `BufEnter` for directories.
50d0d89129 inccommand: Preview :sub commands only after delimiter #59321420e10474 CheckHealth improvements #5519c8d5e9230e jobstart(): Return -1 if cmd is not executable. #5671
Asynchronous API functions are served immediately, which means pending
input could change the state of Nvim shortly after an async API function
result is returned.
nvim_get_mode() is different:
- If RPCs are known to be blocked, it responds immediately (without
flushing the input/event queue)
- else it is handled just-in-time before waiting for input, after
pending input was processed. This makes the result more reliable
(but not perfect).
Internally this is handled as a special case, but _semantically_ nothing
has changed: API users never know when input flushes, so this internal
special-case doesn't violate that. As far as API users are concerned,
nvim_get_mode() is just another asynchronous API function.
In all cases nvim_get_mode() never blocks for more than the time it
takes to flush the input/event queue (~µs).
Note: This doesn't address #6166; nvim_get_mode() will provoke #6166 if
e.g. `d` is operator-pending.
Closes#6159
Also re-word some error messages:
- "Key does not exist: %s"
- "Invalid channel: %<PRIu64>"
- "Request array size must be 4 (request) or 3 (notification)"
- "String cannot contain newlines"
References #6150
Closes#6540
In #6221 there was a mistake in calculating which folds need to be
re-ordered. When there are no folds after those that have been adjusted,
then `move_end` remains 0. This results in reverse_fold_order()
swapping folds that have been adjusted with uninitialised folds in the
remainder of the grow array.
Add a check in foldMoveRange() to account for this case.
Not using enum{} because SIZE_MAX exceeds integer and I do not really like how
enum definition is described in C99:
1. Even though all values must fit into the chosen type (6.7.2.2, p 4) the type
to choose is still implementation-defined.
2. 6.4.4.3 explicitly states that “an identifier declared as an enumeration
constant has type `int`”. So it looks like “no matter what type was chosen
for enumeration, constants will be integers”. Yet the following simple
program:
#include <stdint.h>
#include <stdio.h>
#include <stddef.h>
enum { X=SIZE_MAX };
int main(int argc, char **argv)
{
printf("x:%zu m:%zu t:%zu v:%zu",
sizeof(X), sizeof(SIZE_MAX), sizeof(size_t), (size_t)X);
}
yields one of the following using different compilers:
- clang/gcc/pathcc: `x:8 m:8 t:8 v:18446744073709551615`
- pcc/tcc: `x:4 m:8 t:8 v:1844674407370955161`
If I remove the cast of X to size_t then pcc/tcc both yield `x:4 m:8 t:8
v:4294967295`, other compilers’ output does not change.
All compilers were called with `$compiler -std=c99 -xc -` (feeding program
from echo), except for `tcc` which has missing `-std=c99`. `pcc` seems to
ignore the argument though: it is perfectly fine with `-std=c1000`.
Calling cmd.exe in Windows follows a very different pattern from Vim.
The primary difference is that Vim does a nested call to cmd.exe, e.g.
the following call in Vim
system('echo a 2>&1')
spawns the following processes
"C:\Program Files (x86)\Vim\vim80\vimrun" -s C:\Windows\system32\cmd.exe /c (echo a 2^>^&1
^>C:\Users\dummy\AppData\Local\Temp\VIoC169.tmp 2^>^&1)
C:\Windows\system32\cmd.exe /c C:\Windows\system32\cmd.exe /c (echo a 2^>^&1
^>C:\Users\dummy\AppData\Local\Temp\VIo3C6C.tmp 2^>^&1)
C:\Windows\system32\cmd.exe /c (echo a 2>&1
>C:\Users\dummy\AppData\Local\Temp\VIo3C6C.tmp 2>&1)
The escaping with ^ is needed because cmd.exe calls itself and needs to
preserve the special metacharacters for the last call. However in nvim
no nested call is made, system('') spawns a single cmd.exe process.
Setting shellxescape to "" disables escaping with ^.
The previous default for shellxquote=( wrapped any command in
parenthesis, in Vim this is more meaningful due to the use of tempfiles
to store the output and redirection (also see &shellquote). There is
a slight benefit in having the default be empty because some expressions
that run in console will not run within parens e.g. due to unbalanced
double quotes
system('echo "a b')
Disable CommandLineToArgvW-standard quoting for cmd.exe.
libuv assumes spawned processes follow the convention expected by
CommandLineToArgvW(). But cmd.exe is non-conformant, so for cmd.exe:
- With system([]), the caller has full control (and responsibility) to
quote arguments correctly.
- With system(''), shell* options are used.
libuv quoting is disabled if argv[0] is:
- cmd.exe
- cmd
- $COMSPEC resolving to a path with filename cmd.exe
Closes#6329
References #6387
Lua has too many pitfalls here:
- os.execute() requires shell-escaping
- os.execute() has breaking changes between Lua 5.1 and 5.2
- No native way in Lua to handle "readonly" etc. on Windows
