autocomplete+ package

View and insert possible completions in the editor while typing

Note: In the example above, Show Suggestions On Keystroke is enabled.

Installation

APM: apm install autocomplete-plus
Preferences: Open Atom and go to Preferences > Packages, search for autocomplete-plus, and install it

Providers

autocomplete+ has a powerful autocomplete provider API, allowing provider authors to add language-specific behavior to this package.

You should definitely install additional providers (the default provider bundled with this package is somewhat crude): https://github.com/atom-community/autocomplete-plus/wiki/Autocomplete-Providers

Usage

Just type some stuff, and autocomplete+ will automatically show you some suggestions. Press UP and DOWN to select another suggestion, press TAB to confirm your selection. You can change the default keymap in Preferences:

Keymap For Confirming A Suggestion
Keymap For Navigating The Suggestion List

Additionally, the keymap can be customized in your keymap.cson:

'atom-text-editor:not(mini) .autocomplete-plus.autocomplete-suggestion-list':
  'tab': 'unset!'
  'enter': 'autocomplete-plus:confirm'
  'up': 'unset!'
  'down': 'unset!'
  'ctrl-p': 'autocomplete-plus:select-previous'
  'ctrl-n': 'autocomplete-plus:select-next'

Features

Shows suggestions while typing
Includes a default provider (FuzzyProvider):
- Wordlist generation happens when you open a file, while editing the file, and on save
- Suggestions are calculated using fuzzaldrin
Exposes a provider API which can be used to extend the functionality of the package and provide targeted / contextually correct suggestions
Disable autocomplete for file(s) via blacklisting
Disable autocomplete for editor scope(s) via blacklisting

Provider API

Great autocomplete depends on having great autocomplete providers. If there is not already a great provider for the language / grammar that you are working in, please consider creating a provider.