stevearc/conform.nvim
Conform.nvim
conform.nvim is a Neovim plugin that formats code buffers using external formatters while preserving editor state such as cursor position, folds, and viewport. It supports embedded code block formatting, applying language-specific formatting rules to code blocks inside Markdown and similar documents.
The plugin runs formatters asynchronously via Neovim's job control, keeping the editor responsive during formatting operations. It offers a configurable formatter selection algorithm that picks a formatter based on filetype, buffer-local variables, or custom predicate functions. Users can define formatters through an extensible Lua DSL specifying commands, arguments, and environment overrides. When no explicit formatter is configured, conform.nvim falls back to Neovim's built-in LSP formatting. Formatting changes are applied as computed minimal diffs to preserve cursor position, folds, and viewport.
Formatting can be triggered synchronously or asynchronously with options for timeout, LSP fallback, range selection, and quiet mode. Formatter definitions can be customized per buffer or globally by overriding commands, arguments, environment variables, and inheritance.
