Ivy Swiper

Ivy is an interactive interface for completion in Emacs. Emacs uses the completion mechanism in a variety of contexts: code, menus, commands, variables, functions, etc. Completion entails listing, sorting, filtering, previewing, and applying actions on selected items. When active, ivy-mode completes the selection process by narrowing available choices while previewing in the minibuffer. Selecting the final candidate is either through simple keyboard character inputs or through powerful regular expressions. Ivy is for quick and easy selection from a list. When Emacs prompts for a string from a list of several possible choices, Ivy springs into action to assist in narrowing and picking the right string from a vast number of choices.