The terminfo entry for linux only advertises 8 colours, but nvim tries
to make it display 16 colours anyway, resulting in erroneous SGR control
sequences for colours 8 and above. The Linux kernel terminal emulator
itself has actually understood the 256-colour control sequences since
version 4.8 and the 16-colour control sequences since version 4.9. Thus
we apply the same terminfo fixup as we apply for *xterm* and *256*, to
emit the 16-colour and 256-colour control sequences even if terminfo's
setaf and setab do not advertise them.
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')
It looks like Neovim has a bug: if `startinsert` is called using `command()`
then `-- TERMINAL --` gets replaced with `-- --` (and also a cursor appears).
Hope this will make people using feed_command less likely: this hides bugs.
Already found at least two:
1. msgpackparse() will show internal error: hash_add() in case of duplicate
keys, though it will still work correctly. Currently silenced.
2. ttimeoutlen was spelled incorrectly, resulting in option not being set when
expected. Test was still functioning somehow though. Currently fixed.
Removed the call to validate_cursor() because mb_check_adjust_col() is
already called in adjust_topline().
Closes#6378
References #6203https://s3.amazonaws.com/archive.travis-ci.org/jobs/215498258/log.txt
[ ERROR ] ...ovim/neovim/test/functional/terminal/scrollback_spec.lua @ 386: 'scrollback' option set to 0 behaves as 1 (10621.17 ms)
==================== File /home/travis/build/neovim/neovim/build/log/ubsan.12836 ====================
= =================================================================
= ==12836==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x62100002cd00 at pc 0x000000eafe90 bp 0x7ffc8661fe50 sp 0x7ffc8661fe48
= READ of size 1 at 0x62100002cd00 thread T0
= #0 0xeafe8f in utf_head_off /home/travis/build/neovim/neovim/src/nvim/mbyte.c:1457:7
= #1 0x6b890e in getvcol /home/travis/build/neovim/neovim/src/nvim/charset.c:1169:15
= #2 0x6bc777 in getvvcol /home/travis/build/neovim/neovim/src/nvim/charset.c:1336:5
= #3 0xfc067b in curs_columns /home/travis/build/neovim/neovim/src/nvim/move.c:730:5
= #4 0xfbc8db in validate_cursor /home/travis/build/neovim/neovim/src/nvim/move.c:510:5
= #5 0x14479ed in setcursor /home/travis/build/neovim/neovim/src/nvim/screen.c:6363:5
= #6 0x17fe054 in redraw /home/travis/build/neovim/neovim/src/nvim/terminal.c:1175:5
= #7 0x17f95e4 in terminal_enter /home/travis/build/neovim/neovim/src/nvim/terminal.c:392:3
= #8 0x70eb2b in edit /home/travis/build/neovim/neovim/src/nvim/edit.c:1300:7
= #9 0x11097d1 in normal_finish_command /home/travis/build/neovim/neovim/src/nvim/normal.c:947:13
= #10 0x1081191 in normal_execute /home/travis/build/neovim/neovim/src/nvim/normal.c:1138:3
= #11 0x170b813 in state_enter /home/travis/build/neovim/neovim/src/nvim/state.c:58:26
= #12 0x103631b in normal_enter /home/travis/build/neovim/neovim/src/nvim/normal.c:464:3
= #13 0xdfb7a8 in main /home/travis/build/neovim/neovim/src/nvim/main.c:552:3
= #14 0x2b8a3c85bf44 in __libc_start_main /build/eglibc-MjiXCM/eglibc-2.19/csu/libc-start.c:287
= #15 0x447b25 in _start (/home/travis/build/neovim/neovim/build/bin/nvim+0x447b25)
=
= 0x62100002cd00 is located 0 bytes to the right of 4096-byte region [0x62100002bd00,0x62100002cd00)
= allocated by thread T0 here:
= #0 0x4f1e98 in malloc (/home/travis/build/neovim/neovim/build/bin/nvim+0x4f1e98)
= #1 0xf28774 in try_malloc /home/travis/build/neovim/neovim/src/nvim/memory.c:84:15
= #2 0xf28934 in xmalloc /home/travis/build/neovim/neovim/src/nvim/memory.c:118:15
= #3 0xec7be8 in mf_alloc_bhdr /home/travis/build/neovim/neovim/src/nvim/memfile.c:646:17
= #4 0xec58d4 in mf_new /home/travis/build/neovim/neovim/src/nvim/memfile.c:297:12
= #5 0xeda8a8 in ml_new_data /home/travis/build/neovim/neovim/src/nvim/memline.c:2697:16
= #6 0xed7beb in ml_open /home/travis/build/neovim/neovim/src/nvim/memline.c:349:8
= #7 0x643fcd in open_buffer /home/travis/build/neovim/neovim/src/nvim/buffer.c:109:7
= #8 0xa7038c in do_ecmd /home/travis/build/neovim/neovim/src/nvim/ex_cmds.c:2483:24
= #9 0xb5bb49 in do_exedit /home/travis/build/neovim/neovim/src/nvim/ex_docmd.c:6839:9
= #10 0xb7b6d8 in ex_edit /home/travis/build/neovim/neovim/src/nvim/ex_docmd.c:6767:3
= #11 0xb2a598 in do_one_cmd /home/travis/build/neovim/neovim/src/nvim/ex_docmd.c:2208:5
= #12 0xb08f47 in do_cmdline /home/travis/build/neovim/neovim/src/nvim/ex_docmd.c:602:20
= #13 0x109997b in nv_colon /home/travis/build/neovim/neovim/src/nvim/normal.c:4492:18
= #14 0x1081188 in normal_execute /home/travis/build/neovim/neovim/src/nvim/normal.c:1135:3
= #15 0x170b813 in state_enter /home/travis/build/neovim/neovim/src/nvim/state.c:58:26
= #16 0x103631b in normal_enter /home/travis/build/neovim/neovim/src/nvim/normal.c:464:3
= #17 0xdfb7a8 in main /home/travis/build/neovim/neovim/src/nvim/main.c:552:3
= #18 0x2b8a3c85bf44 in __libc_start_main /build/eglibc-MjiXCM/eglibc-2.19/csu/libc-start.c:287
=
= SUMMARY: AddressSanitizer: heap-buffer-overflow /home/travis/build/neovim/neovim/src/nvim/mbyte.c:1457:7 in utf_head_off
= Shadow bytes around the buggy address:
= 0x0c427fffd950: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
= 0x0c427fffd960: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
= 0x0c427fffd970: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
= 0x0c427fffd980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
= 0x0c427fffd990: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
= =>0x0c427fffd9a0:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
= 0x0c427fffd9b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
= 0x0c427fffd9c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
= 0x0c427fffd9d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
= 0x0c427fffd9e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
= 0x0c427fffd9f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
= Shadow byte legend (one shadow byte represents 8 application bytes):
= Addressable: 00
= Partially addressable: 01 02 03 04 05 06 07
= Heap left redzone: fa
= Heap right redzone: fb
= Freed heap region: fd
= Stack left redzone: f1
= Stack mid redzone: f2
= Stack right redzone: f3
= Stack partial redzone: f4
= Stack after return: f5
= Stack use after scope: f8
= Global redzone: f9
= Global init order: f6
= Poisoned by user: f7
= Container overflow: fc
= Array cookie: ac
= Intra object redzone: bb
= ASan internal: fe
= Left alloca redzone: ca
= Right alloca redzone: cb
= ==12836==ABORTING
=====================================================================================================
./test/helpers.lua:82: assertion failed!
stack traceback:
./test/helpers.lua:82: in function 'check_logs'
./test/functional/helpers.lua:643: in function <./test/functional/helpers.lua:642>
Make the 'scrollback' option work like most other buffer-local options:
- `:set scrollback=x` sets the global and local value
- `:setglobal scrollback=x` sets only the global default
- new terminal buffers inherit the global
Normal buffers are still always -1, and :setlocal there is an error.
Closes#6337
Tokenize p_sh if used as default in ex_terminal(). Previously p_sh was
used as the first arg in a list when calling termopen(), this would try
to call an untokenized version of shell, meaning if you had an argument
in 'shell':
set shell=/bin/bash\ --login
the command would fail.
Helped-by: oni-link <knil.ino@gmail.com>
Closes#3999
- Vim "unix default" of 'noshowcmd' is serving few users. And it's
inconsistent.
- 'ruler' and 'belloff=all' improve the out-of-the-box experience.
- Continue to use 'noshowcmd' and 'noruler' by default in the functional
tests to keep them fast.
TODO: Add a "disable slow stuff" command or mapping to address the
use-case of a very slow terminal connection.
After using 'termopen("echo") the current buffer content is changed,
but the cursor position of the current window is not updated.
Because of this, a call to 'mb_adjust_cursor()' can lead to a
heap-buffer-overflow.
Fix this by resetting the cursor for the current window.
Fixes#3161
Let the terminal dictate the normal-mode cursor position. This will be
disorienting sometimes, but it is closer to what users expect vs always
going to the last line.
Periodically skip :! spam. This is a "cheat" that works for all UIs and greatly
improves responsiveness when :! spams MB or GB of output:
:!yes
:!while true; do date; done
:!git grep ''
:grep -r '' *
After ~10KB of data is seen from a single :! invocation, output will be skipped
for ~1s and three dots "..." will pulse in the bottom-left. Thereafter the
behavior alternates at every:
* 10KB received
* ~1s throttled
This also avoids out-of-memory which could happen with large :! outputs.
Note: This commit does not change the behavior of execute(':!foo').
execute(':!foo') returns the string ':!foo^M', it captures *only* Vim
messages, *not* shell command output. Vim behaves the same way.
Use system('foo') for capturing shell command output.
Closes#1234
Helped-by: oni-link <knil.ino@gmail.com>
https://github.com/mpeterv/luacheck/pull/81#issuecomment-261099606
> If you really want to use bleeding-edge version you should get the
> rockspec from master branch, not a fixed commit ...
> The correct way to install from a specific commit is cloning that
> commit and running "luarocks make" from project directory. The reason
> is that running "install" or "build" on an scm rockspec fetches
> sources from master but uses build description from the rockspec
> itself, which may be outdated.
