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Problem: Applications running inside :terminal that use DEC private mode 2026 (synchronized output) to batch screen updates get garbled rendering. Neovim's embedded libvterm does not handle mode 2026, so the synchronization sequences are ignored and intermediate screen states leak through as visual corruption. Solution: Add mode 2026 support to libvterm's state machine and wire it through to terminal.c. When an application enables mode 2026, invalidation of the terminal buffer is deferred until the application disables it, causing all accumulated screen updates to flush as a single atomic refresh. * fix(terminal): harden sync output redraw gating Problem: The initial mode 2026 implementation gated invalidate_terminal() but missed three other redraw paths: term_sb_push/term_sb_pop bypassed the gate by directly adding to invalidated_terminals, refresh_timer_cb could fire mid-sync flushing partial state, and the 10ms timer delay after sync-end left a window for stale repaints. Solution: - Gate term_sb_push/term_sb_pop during synchronized output - Skip syncing terminals in refresh_timer_cb - On sync end, schedule a zero-delay full-screen refresh via sync_flush_pending flag in terminal_receive() - Add news.txt entry for mode 2026 support Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * test(terminal): add vterm unit tests for mode 2026 Add unit-level tests for synchronized output (mode 2026) to vterm_spec.lua, covering settermprop callbacks and DECRQM query/response. Suggested-by: justinmk Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(terminal): address review feedback for mode 2026 - Use multiqueue_put(main_loop.events) instead of restarting the global refresh timer on sync end, to avoid affecting other invalidated terminals. - Add screen:expect_unchanged() to verify screen doesn't update during sync mode. - Merge buffer-lines test into existing test. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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.