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

ert-runner is a tool for Emacs projects tested using ERT. It assumes a certain test structure setup and can therefore make running tests easier.

emacs-commander provides command line parsing for Emacs.

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

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.

This provides a list of issues with the Emacs package metadata of a file, e.g., the package dependencies it requires. Checks will currently be enabled only if a Package-Requires: or Package-Version: header is present in the file.

This package silences most output of Emacs when running an Emacs shell script.

Espuds is a collection of the most commonly used step definitions for testing with the Ecukes framework.

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 a Makefile to help checking Emacs packages.

This package provides Ecukes, a Cucumber-inspired integration testing tool for Emacs. Ecukes is not a complete clone of Cucumber and is not intended to be.

Buttercup is a behavior-driven development framework for testing Emacs Lisp code. It groups related tests so they can share common set-up and tear-down code, and allows the programmer to "spy" on functions to ensure they are called with the right arguments during testing.

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

emacs-ert-expectations is a simple unit test framework for Emacs Lisp to be used with ert.

Prism is a Rainbow Blocks-like mode for Emacs. It preserves non-color face properties and allows configuration of faces and colors.

This package provides Emacs integration for psc-ide, an IDE protocol for PureScript programming language. It features:

• Completions

• Type at point

• Go to definition

• Automatic imports

• Case split

• Build system integration, and

• Flycheck support

This Emacs package provides an interface for wordnet. Features include completion, if the query is not found too ambiguous and navigation in the result buffer.

spacegray-theme is an Emacs port of the Spacegray theme from Sublime Text. It features a dark blue/gray background and soft blue, green, orange and red as accent colors.

Interactive align-regexp command in Emacs

Selectrum is a solution for incremental narrowing in Emacs, replacing Helm, Ivy, and IDO. Its design philosophy is based on choosing the right abstractions and prioritizing consistency and predictability over special-cased improvements for particular cases. As such, Selectrum follows existing Emacs conventions where they exist and are reasonable, and it declines to implement features which have marginal benefit compared to the additional complexity of a new interface.

This package displays keyword entries from source code comments and Org files in the Magit status buffer. Activating an item jumps to it in its file. By default, it uses keywords from hl-todo, minus a few (like NOTE).

Company box is a Company front-end. It supports different colors for different backends, associates icons to functions, variables... and their backends, and displays candidate's documentation. It is not limited by the current window size or buffer's text properties.

This package is not compatible with a TTY.

This package permits comparisons of two or three buffers based on diff output.

helpful is an alternative to the built-in Emacs help that provides much more contextual information.

• Show the source code for interactively defined functions (unlike the built-in Help).

• Fall back to the raw sexp if no source is available.

• Show where a function is being called.

• Docstrings will Highlight the summary (the first sentence), include cross-references, hide superfluous puncuation.

• Show you the properties that have been applied to the current symbol. This provides visibility of features like edebug or byte-code optimisation.

• Provide a separate helpful-command function to view interactive functions.

• Display any keybindings that apply to interactive functions.

• Trace, disassemble functions from inside Helpful. This is discoverable and doesn't require memorisation of commands.