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Lewis Russell d663d8f4b3 perf(help): generate helptags with LPeg
Problem: Generating helptags builds and queries a full vimdoc syntax
tree. This is much slower than the previous scanner and also happens
before discovering that the tags file cannot be written.

Solution: Extract tags with an LPeg grammar, reading each file once and
skipping example blocks and ordinary text. Open the output first so
unwritable directories can return immediately.

This restores legacy handling of tags inside inline code spans. On an
arm64 Mac, the 5.36 MB runtime corpus takes 24 ms instead of 604 ms,
with identical generated tags.

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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 528 MiB
Languages
Vim Script 39.2%
Lua 33%
C 26.8%
CMake 0.4%
Zig 0.2%
Other 0.1%