spacemacs/layers/+lang/emacs-lisp

Emacs Lisp layer

• Description
• Install
• Auto-compile
• Working with lisp files (barfage, slurpage & more)
• Key bindings
  • Additional evaluation functions
  • Format code
  • Debugging

Description

This layer gathers all the configuration related to emacs-lisp. This should always be in your dotfile, it is not recommended to uninstall it.

Install

To use this configuration layer, add it to your ~/.spacemacs. You will need to add emacs-lisp to the existing dotspacemacs-configuration-layers list in this file.

Auto-compile

This layer adds the auto-compile package to automatically keep the byte-compiled version of your Emacs lisp files synced with the uncompiled version on every save. If there are any compiler errors in the file, you will see a counter show up in the mode line. You can hover over these numbers to get a description or view the compiler output with the SPC m c l key binding. To disable the feature use this line in your dotspacemacs/user-config function.

  (remove-hook 'emacs-lisp-mode-hook 'auto-compile-mode)

You can also exclude the auto-compile package.

Working with lisp files (barfage, slurpage & more)

Spacemacs comes with a special lisp-state for working with lisp code that supports slurpage, barfage and more tools you'll likely want when working with lisp.

As this state works the same for all files, the documentation is in global DOCUMENTATION.org. In general, use SPC k to interact with the lisp-state.

Key bindings

Key Binding	Description
SPC m g f	select a known function and go to its definition
SPC m g g	go to definition of symbol under point
SPC m g G	go to definition of symbol under point in other window
SPC m h h	describe symbol at point
SPC m c c	byte compile the current file
SPC m c l	popup compile-log buffer
SPC m e $ or SPC m e l	go to end of current line and evaluate
SPC m e b	evaluate current buffer
SPC m e C	evaluate current defun or setq
SPC m e e	evaluate sexp before point
SPC m e f	evaluation current function
SPC m e r	evaluate current region
SPC m ​,​	toggle lisp state
SPC m t b	run tests of current buffer
SPC m t q	run ert
SPC m d m	open macrostep transient-state

Additional evaluation functions

If smartparens is used the following additional key bindings are available:

Key Binding	Description
SPC m e c	evaluate sexp around point
SPC m e s	evaluate symbol around point

Format code

The semantic layer should be installed for these key bindings to become active.

Key Binding	Description
SPC m = b	format current buffer
SPC m = f	format current function
SPC m = o	format all on one line
SPC m = s	format current sexp

Debugging

Key Binding	Description
SPC m d f	on a defun symbol toggle on the instrumentalisation of the function
SPC m d F	on a defun symbol toggle off the instrumentalisation of the function
SPC m d t	insert (debug) to print the stack trace and re-evaluate the function