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Justin M. Keyes 597555ebc0 fix(options): crash on ":let &t_Co = v:true" #41152
Problem:
Assigning a Boolean or special value (v:true/v:false/v:null/v:none) to a TTY
option aborts:

    Assertion failed: (curval.type == newval.type), function ex_let_option, file vars.c, line 1408.
    3   libsystem_c.dylib   __assert_rtn + 284
    4   nvim                ex_let_one + 3308
    5   nvim                ex_let_vars + 112
    6   nvim                ex_let + 2356
    7   nvim                execute_cmd0 + 252
    8   nvim                do_cmdline + 9076
    9   nvim                call_user_func + 3320
    10  nvim                call_func + 2076
    11  nvim                get_func_tv + 696
    12  nvim                eval_func + 380
    20  nvim                eval_to_string_eap + 276
    21  nvim                eval_map_expr + 444
    22  nvim                vgetorpeek + 3172
    23  nvim                vgetc + 764

Solution:
Apply the string-type check to TTY options too, so a Boolean/special value
gives "E928: String required" instead of aborting. Valid string/number
assignments to `t_*` pseudo-options still silently no-op.
2026-08-04 11:06:47 +00:00
2025-12-30 01:44:52 -05:00
2026-03-13 12:29:44 +00:00
2025-01-11 10:34:12 +01:00
2026-04-18 15:38:59 -04:00
2026-03-11 18:00:18 +01:00
2026-04-16 10:48:11 -04:00

Neovim

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Neovim is a project that seeks to aggressively refactor Vim in order to:

See the Introduction wiki page and Roadmap for more information.

Features

See :help nvim-features for the full list, and :help news for noteworthy changes in the latest version!

Install from package

Pre-built packages for Windows, macOS, and Linux are found on the Releases page.

Managed packages are in Homebrew, Debian, Ubuntu, Fedora, Arch Linux, Void Linux, Gentoo, and more!

Install from source

See BUILD.md and supported platforms for details.

The build is CMake-based, but a Makefile is provided as a convenience. After installing the dependencies, run the following command.

make CMAKE_BUILD_TYPE=RelWithDebInfo
sudo make install

To install to a non-default location:

make CMAKE_BUILD_TYPE=RelWithDebInfo CMAKE_INSTALL_PREFIX=/full/path/
make install

CMake hints for inspecting the build:

  • cmake --build build --target help lists all build targets.
  • build/CMakeCache.txt (or cmake -LAH build/) contains the resolved values of all CMake variables.
  • build/compile_commands.json shows the full compiler invocations for each translation unit.

Transitioning from Vim

See :help nvim-from-vim for instructions.

Project layout

├─ cmake/           CMake utils
├─ cmake.config/    CMake defines
├─ cmake.deps/      subproject to fetch and build dependencies (optional)
├─ runtime/         plugins and docs
├─ src/nvim/        application source code (see src/nvim/README.md)
│  ├─ api/          API subsystem
│  ├─ eval/         Vimscript subsystem
│  ├─ event/        event-loop subsystem
│  ├─ generators/   code generation (pre-compilation)
│  ├─ lib/          generic data structures
│  ├─ lua/          Lua subsystem
│  ├─ msgpack_rpc/  RPC subsystem
│  ├─ os/           low-level platform code
│  └─ tui/          built-in UI
└─ test/            tests (see test/README.md)

License

Neovim contributions since b17d96 are licensed under the Apache 2.0 license, except for contributions copied from Vim (identified by the vim-patch token). See LICENSE.txt for details.

Description
Vim-fork focused on extensibility and usability
Readme 589 MiB
Languages
Vim Script 39.9%
Lua 32.5%
C 26.6%
CMake 0.4%
Zig 0.2%
Other 0.1%