# vamp

A modal editor whose features are independent of the frontend used to present them.

## Language

**Editor session**:
An active editing environment containing a buffer, its modal state, and the plugins available to that environment.
_Avoid_: plugin manager (when referring to the whole editing environment)

**Feature**:
A named set of editor commands with declared frontend compatibility requirements.

**Plugin**:
An extension that contributes a feature to an editor session. A failed plugin can become unavailable without ending the session.

**Core feature**:
A protected feature that provides essential editing behavior and cannot be replaced or disabled by an extension.

**Frontend**:
The presentation and input experience through which a user interacts with an editor session.

**Capability**:
A named frontend ability required by a feature for compatibility, not a permission granted to that feature.

## Configuration interfaces

- Prefer typed objects for editor-owned actions, modes, and other closed sets. Expose new core binding targets through `config.core` rather than requiring command-name strings.
- Use strings for open-ended identifiers: language IDs, paths, and external plugin command names. Interactive Ex command names remain textual.
- Ruby action/mode objects provide validation during configuration evaluation and discoverable members, not compile-time enum safety.

```ruby
config.bind "leader n", config.core.word_next, mode: config.modes.normal
config.lsp["my-language"] = { command: ["my-language-server"], extensions: ["myl"] }
```