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Vim-fork focused on extensibility and usability
bbde37fd64
Problem: undefined behaviour upper/lower function ptrs
Solution: Fix UBSAN error in regexp and simplify upper/lowercase
modifier code
The implementation of \u / \U / \l / \L modifiers in the substitute
command relies on remembering the state by setting function pointers on
func_all/func_one in the code. The code signature of `fptr_T` is
supposed to return void* (due to C function signatures not being able to
return itself due to type recursion), and the definition of the
functions (e.g. to_Upper) didn't follow this rule, and so the code tries
to cast functions of different signatures, resulting in undefined
behavior error under UBSAN in Clang 17. See vim/vim#12745.
We could just fix `do_Upper`/etc to just return void*, which would fix
the problem. However, these functions actually do not need to return
anything at all. It used to be the case that there was only one pointer
"func" to store the pointer, which is why the function needs to either
return itself or NULL to indicate whether it's a one time or ongoing
modification. However, c2c355df6f094cdb9e599fd395a78c14486ec697
(7.3.873) already made that obsolete by introducing `func_one` and
`func_all` to store one-time and ongoing operations separately, so these
functions don't actually need to return anything anymore because it's
implicit whether it's a one-time or ongoing operation. Simplify the code
to reflect that.
closes: vim/vim#13117
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| cmake | ||
| cmake.config | ||
| cmake.deps | ||
| cmake.packaging | ||
| contrib | ||
| runtime | ||
| scripts | ||
| src | ||
| test | ||
| .cirrus.yml | ||
| .clang-format | ||
| .clang-tidy | ||
| .clangd | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .luacheckrc | ||
| .luacov | ||
| .luarc.json | ||
| .mailmap | ||
| .stylua.toml | ||
| .styluaignore | ||
| BACKERS.md | ||
| BSDmakefile | ||
| CMakeLists.txt | ||
| CMakePresets.json | ||
| CONTRIBUTING.md | ||
| LICENSE.txt | ||
| MAINTAIN.md | ||
| Makefile | ||
| README.md | ||
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 the Building Neovim wiki page 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 for details.
Vim is Charityware. You can use and copy it as much as you like, but you are
encouraged to make a donation for needy children in Uganda. Please see the
kcc section of the vim docs or visit the ICCF web site, available at these URLs:
https://iccf-holland.org/
https://www.vim.org/iccf/
https://www.iccf.nl/
You can also sponsor the development of Vim. Vim sponsors can vote for
features. The money goes to Uganda anyway.