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title: LSP Mode - Language Server Protocol support for Emacs description: Language Server Protocol support with multiples languages support for Emacs

Language Server Protocol Support for Emacs

LSP mode


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Why?

  • ❤️ Community Driven
  • 💎 Fully featured - supports all features in Language Server Protocol v3.14.
  • 🚀 Fast - see performance section.
  • 🌟 Flexible - choose between full-blown IDE with flashy UI or minimal distraction free.
  • ⚙️ Easy to configure - works out of the box and automatically upgrades if additional packages are present.

Overview

Client for Language Server Protocol (v3.14). lsp-mode aims to provide IDE-like experience by providing optional integration with the most popular Emacs packages like company, flycheck and projectile.

  • Non-blocking asynchronous calls
  • Real-time Diagnostics/linting via flycheck (recommended) or flymake when Emacs > 26 (requires flymake>=1.0.5)
  • Code completion - company-capf / completion-at-point (note that company-lsp is no longer supported).
  • Hovers - using lsp-ui
  • Code actions - via lsp-execute-code-action, modeline (recommended) or lsp-ui sideline.
  • Code outline - using builtin imenu or helm-imenu
  • Code navigation - using builtin xref, lsp-treemacs tree views or lsp-ui peek functions.
  • Code lens
  • Symbol highlights
  • Formatting
  • Project errors on modeline
  • Debugger - dap-mode
  • Breadcrumb on headerline
  • Helm integration - helm-lsp
  • Ivy integration - lsp-ivy
  • Consult integration - consult-lsp
  • Treemacs integration - lsp-treemacs
  • Semantic tokens as defined by LSP 3.16 (compatible language servers include recent development builds of clangd and rust-analyzer)
  • which-key integration for better discovery
  • iedit
  • dired
  • ido

Presentations/demos

See also

  • lsp-docker - provide docker image with preconfigured language servers with corresponding emacs configuration.
  • company-box - company frontend with icons.
  • dap-mode - Debugger integration for lsp-mode.
  • eglot - An alternative minimal LSP implementation.
  • which-key - Emacs package that displays available keybindings in popup
  • projectile - Project Interaction Library for Emacs
  • emacs-tree-sitter - Faster, fine-grained code highlighting via tree-sitter.
  • gccemacs - modified Emacs capable of compiling and running Emacs Lisp as native code.

Contributions

Contributions are very much welcome.

Support the project

The emacs-lsp organization has more than 20.000 lines of code, to keep all of this working, we need to implement new features and help the community on a lot of issues.

You can help us keep going and improving it by supporting the project

Members

Here it is a list of the current lsp-mode members and what they are primary working on/responsible for.

kurnevsky
kurnevsky

Scala | Rust
seagle0128
seagle0128

Go | Python MS
sebastiansturm
sebastiansturm

lsp-mode core | C++
vibhavp
vibhavp

lsp-mode core
yyoncho
yyoncho

lsp-mode core | Java
ericdallo
ericdallo

Dart/Flutter | Clojure
danielmartin
danielmartin

C++ | Swift
kiennq
kiennq

completions | pwsh
nbfalcon
nbfalcon

lsp-mode core | iedit

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