emacs-ansi defines functions that turns simple strings to ANSI strings. Turning a string into an ANSI string can be to add color to a text, add color in the background of a text or adding a style, such as bold, underscore or italic.

Emacs Lisp Mock is a library for mocking and stubbing using readable syntax. Most commonly Emacs Lisp Mock is used in conjunction with Emacs Lisp Expectations, but it can be used in other contexts.

Undercover is a test coverage library for software written in Emacs Lisp.

This package provides a Makefile to help checking Emacs packages.

This package provides a Makefile-like script and a transient menu for linting and testing Emacs packages.

To allow for the usage of Emacs functions and macros that are defined in newer versions of Emacs, compat.el provides definitions that are installed ONLY if necessary. These reimplementations of functions and macros are at least subsets of the actual implementations. Be sure to read the documentation string to make sure.

Not every function provided in newer versions of Emacs is provided here. Some depend on new features from the core, others cannot be implemented to a meaningful degree. The main audience for this library are not regular users, but package maintainers. Therefore commands and user options are usually not implemented here.

This package provides an Emacs library for working with files and directories.

Nyan mode is an analog indicator of your position in the buffer. The cat should go from left to right in your mode-line, as you move your point from 0% to 100%. You can click on the rainbow or the empty space to scroll backwards and forwards and also animate it.

This provides functions to support ert, the Emacs Regression Test framework. It includes

• a set of predicates for comparing strings, buffers and file contents.

• explainer functions for all predicates giving useful output macros for creating many temporary buffers at once, and for restoring the buffer list.

• methods for testing indentation, by comparison or "round-tripping".

• methods for testing fontification.

Assess aims to be a stateless and noiseless as possible, leaving Emacs unchanged whether the tests succeed or fail and suppressing extraneous messages.

Emacs::PDE is a collection of Emacs Lisp extensions to facilitate Perl programming. CPerl Mode has provided an excellent environment for coding; Emacs::PDE provides other common tools such as creating files using templates, smart compiling, perldoc, perltidy, debugger, tags tree view and so on. PDE also provides an easy configuration for Perl programming, and a tutorial for novices to start using Emacs.

This package allows you to select yasnippet snippets using ivy completion. When current selection changes in the minibuffer, the snippet contents are temporarily expanded in the buffer. To use it, call M-x ivy-yasnippet (but make sure you have enabled yas-minor-mode first).

fedi.el is an Emacs library used by several fediverse frontend packages.

Mocker.el is a framework for writing tests in Emacs Lisp. It uses regular Lisp rather than a domain specific language (DSL), which maximizes flexibility (at the expense of conciseness).

Suggest.el will find functions that give the output requested. It's a great way of exploring list, string and arithmetic functions.

This library allows you to put text data into boxes and align them horizontally, applying margin, padding, borders.

This package provides a nameless-mode minor mode in which the package namespace prefix is hidden by a colon.

This plugin subscribes to hooks erc-insert-modify-hook and erc-send-modify-hook to download and show images.

This library provide one function to show tooltip near the cursor.

Shell Maker is a convenience wrapper around Comint mode.

This package provides a simple alternative to notmuch-address. In particular, it gives up on persistent caching, external scripts, and backward compatibility.

This package provides a simple testing library for Emacs.

LSP mode is a client and library implementation for the Language Server Protocol. This mode creates an IDE-like experience by providing optional integration with other popular Emacs packages like Company, Flycheck, and Projectile.

evil-cleverparens remaps Evil keybindings to allow modal editing with screwing up the structure of Lisp code. Alternatives for verb commands which would are normally destructive (such as deletion) are provided. Those alternative commands are and bound by default to their corresponding Evil keys.

This package, a port of vim-lion, provides an operator for aligning text objects based on separators.