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.
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>
- 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.
It is otherwise impossible to determine which test failed sanitizer/valgrind
check. test/functional/helpers.lua module return was changed so that tests which
do not provide after_each function to get new check will automatically fail.
This was not a problem locally, but would often/sometimes/etc. (YMMV) fail on QB
and/or travis. This seems to fix it. Quoting @justinmk: "I have a feeling this
is just a bug in the bracketed paste special-cases in the existing code".
The hexadecimal notation is a Luajit extension which is not compatible with Lua
5.1. While Lua 5.2 does support hexadecimal sequences, it is better to target
Lua 5.1 for maximum compatibility with Luajit(which has fully compatible with
5.1 API/ABI).
Background: Vim internally prefers to represent ALT/META chords as
single-byte keys, by setting the high bit of the key byte.
extract_modifiers() _discards_ the meta/alt modifier, but we need it for
libvterm and libtermkey.
Closes#2440Closes#3727Closes#2017
References #2277
References #2254https://github.com/neovim/neovim/issues/2017#issuecomment-140423557
> We [not libtermkey] are setting the high bit for some reason
https://github.com/neovim/neovim/issues/176#issuecomment-77834715
> libvtermkey requires the leading esc to parse alt/meta
https://github.com/neovim/neovim/pull/3246#issuecomment-136328450
> A program could do better than the current logic on some terminals, by
> asking for pure 8bit mode (S8C1T) and then immediately querying the
> mode again. If the result comes back as an 8bit single-byte CSI, then
> it can presume the mode setting was successful, and now the ESC prefix
> byte won't be seen in multibyte sequences; only as an Alt- prefix or
> a real Escape key. On such a terminal, it could therefore avoid
> needing to use that waiting timeout.
This change adds switch cases for K_FOCUSGAINED and K_FOCUSLOST to the
input handling functions in ex_getln.c and terminal.c. The handling is
identical to what's found in edit.c (just calling apply_autocmds).
If one enters cmdline-mode by feeding `:` and sends a focuslost event (by
leaving the window for example) the text `<FocusLost>` will be inserted
into the command line. There is similar behaviour in terminal mode. This
patch corrects this behavior to fire the apropriate autocmd instead.
Fixes#3714
