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526365a8d1
* fix(help): preserve multi-letter CTRL modifiers in :help subject
Problem: After PR 39537 normalized `CTRL-U-default` by excluding
`-` from the trigger char class, the regex `(CTRL%-[^{])([^-_\\])`
also fires between `CTRL-S` and the `H` of the `SHIFT` modifier
in tags like `c_CTRL-SHIFT-V`, splitting it into the non-existent
`c_CTRL-S_HIFT-V`.
Solution: Exclude uppercase letters from the char class so a
multi-letter modifier following `CTRL-X` (e.g. `SHIFT`, `ALT`) is
no longer split. The `-` exclusion from 39537 is preserved so
`i_CTRL-U-default` still works.
* fix(help): escape ~ in expr-=~? exception to keep regex valid
Problem: The `expr-=~?` exception in the tag alias table maps to
`=~?`, but in Vim's regex engine `~` refers to the previous
substitute pattern. With no prior substitute the pattern fails to
compile, so `:help expr-=~?` returns E149 even though the tag exists.
Solution: Escape `~` as \\\~` so the alias expands to a valid
regex (`=\\\~?`) that substring-matches the `expr-=~?` tag. Other
`expr-X?` entries are unaffected since they don't contain `~`.
* fix(help): don't insert _ before CTRL- when preceded by -
Problem: The rule `([^_])CTRL%- -> %1_CTRL-` inserts an underscore
between any non-underscore char and `CTRL-`, which wrongly rewrites
tags like `map-CTRL-C` and `telnet-CTRL-]` (where `CTRL-` is
literal text in the tag, not a key chord).
Solution: Exclude `-` from the trigger char class so a hyphen
immediately before `CTRL-` is preserved. The existing behavior for
`iCTRL-GCTRL-J` -> `i_CTRL-G_CTRL-J` is unaffected because the
`G` before `CTRL-J` is not `-`.
* fix(help): only treat ^X as caret notation for valid control chars
Problem: The regex `%^([^_])` converts any `^X` to `CTRL-X`,
including `:set^=` where `^=` is literal text in the tag, not a
caret-notation control character.
Solution: Restrict the transformation to caret-notation chars
(`%a` or one of `?@[\\]^{}`). This matches the C reference
behavior where `^X` is only converted when X is alphanumeric or one
of the control-notation punctuation chars. `{` is retained so
`^{char}` still maps to the `CTRL-{char}` placeholder tag.
Neovim is a project that seeks to aggressively refactor Vim in order to:
- Simplify maintenance and encourage contributions
- Split the work between multiple developers
- Enable advanced UIs without modifications to the core
- Maximize extensibility
See the Introduction wiki page and Roadmap for more information.
Features
- Modern GUIs
- API access from any language including C/C++, C#, Clojure, D, Elixir, Go, Haskell, Java/Kotlin, JavaScript/Node.js, Julia, Lisp, Lua, Perl, Python, Racket, Ruby, Rust
- Embedded, scriptable terminal emulator
- Asynchronous job control
- Shared data (shada) among multiple editor instances
- XDG base directories support
- Compatible with most Vim plugins, including Ruby and Python plugins
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 helplists all build targets.build/CMakeCache.txt(orcmake -LAH build/) contains the resolved values of all CMake variables.build/compile_commands.jsonshows 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.