
:Man
targets (#20624)
* fix(man): handle absolute paths as :Man targets Previously, attempting to provide `:Man` with an absolute path as the name would cause neovim to return the following error: ``` Error detected while processing command line: /usr/local/share/nvim/runtime/lua/man.lua:690: /usr/local/share/nvim/runtime/lua/man.lua:683: Vim:E426: tag not found: nil(nil) Press ENTER or type command to continue ``` ..because it would try to validate the existence of a man page for the provided name by executing `man -w /some/path` which (on at least some Linux machines [0]) returns `/some/path` instead of the path to the nroff files that would be formatted to satisfy the man(1) lookup. While man pages are not normally named after absolute paths, users shouldn't be blamed for trying. Given such a name/path, neovim would **not** complain that the path didn't have a corresponding man file but would error out when trying to call the tag function for the null-propagated name-and-section `nil(nil)`. (The same underlying error existed before this function was ported to lua, but did not exhibit the lua-specific `nil(nil)` name; instead a tag lookup for `()` would fail and error out.) With this patch, we detect the case where `man -w ...` returns the same value as the provided name to not only prevent invoking the tag function for a non-existent/malformed name+sect but also to properly report the non-existence of a man page for the provided lookup (the absolute path). While man(1) can be used to directly read an nroff-formatted document via `man /path/to/nroff.doc`, `:Man /path/to/nroff.doc` never supported this behavior so no functionality is lost in case the provided path _was_ an nroff file. [0]: `man -w /absolute/path` returning `/absolute/path` observed on an Ubuntu 18.04 installation. * test: add regression test for #20624 Add a functional test to `man_spec.lua` to check for a regression for #20624 by first obtaining an absolute path to a random file and materializing it to disk, then attempting to query `:Man` for an entry by that same name/path. The test passes if nvim correctly reports that there is no man page correspending to the provided name/path and fails if any other error (or no error) is shown.
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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, 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][nvim-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 help
lists all build targets.build/CMakeCache.txt
(orcmake -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
├─ ci/ build automation
├─ 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/ VimL 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:
http://iccf-holland.org/
http://www.vim.org/iccf/
http://www.iccf.nl/
You can also sponsor the development of Vim. Vim sponsors can vote for
features. The money goes to Uganda anyway.