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spacemacs/layers/+lang/racket/README.org
2018-10-11 00:13:43 +03:00

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#+TITLE: Racket layer
[[file:img/racket.png]]
* Table of Contents :TOC_4_gh:noexport:
- [[#description][Description]]
- [[#features][Features:]]
- [[#install][Install]]
- [[#structuraly-safe-editing][Structuraly safe editing]]
- [[#key-bindings][Key Bindings]]
- [[#navigation][Navigation]]
- [[#documentation][Documentation]]
- [[#tests][Tests]]
- [[#repl][REPL]]
- [[#other-key-bindings][Other key bindings]]
* Description
Adds support for the [[http://racket-lang.org/][Racket]] programming language.
** Features:
- Syntax highlighting with =racket-mode=
- Test runner
- Interactive REPL
- Code navigation with =gtags=
- Structuraly safe editing using optional [[https://github.com/luxbock/evil-cleverparens][evil-cleverparens]]
* Install
To use this configuration layer, add it to your =~/.spacemacs=. You will need to
add =racket= to the existing =dotspacemacs-configuration-layers= list in this
file. You will also need DrRacket installed. Alternatively, one can use the
“Minimal Racket” installation, and then run the following command.
#+BEGIN_SRC Bash
raco pkg install drracket
#+END_SRC
* Structuraly safe editing
This layer adds support for =evil-cleverparens= which allows to safely edit
lisp code by keeping the s-expressions balanced.
By default this mode is not activated. You can turn it on locally on the
active buffer with ~SPC m T s~ (=s= for safe).
To turn it on automatically for all =racket= buffers call the following
function in your =dotspacemacs/user-config= function:
#+BEGIN_SRC emacs-lisp
(spacemacs/toggle-evil-safe-lisp-structural-editing-on-register-hook-racket-mode)
#+END_SRC
or to enable it for all supported modes:
#+BEGIN_SRC emacs-lisp
(spacemacs/toggle-evil-safe-lisp-structural-editing-on-register-hooks)
#+END_SRC
When enabled the symbol =🆂= should be displayed in the mode-line.
* Key Bindings
** Navigation
| Key Binding | Description |
|-------------+-------------------------------------|
| ~SPC m g `~ | Return to previous location |
| ~SPC m g g~ | Go to definition of symbol at point |
| ~SPC m g m~ | Go to module at point |
| ~SPC m g r~ | Open require path |
** Documentation
| Key Binding | Description |
|-------------+---------------------------------------------------------------|
| ~SPC m h d~ | Describes the function at point in a =Racket Describe= buffer |
| ~SPC m h h~ | View documentation of the identifier or string at point. |
** Tests
| Key Binding | Description |
|-------------+-----------------------------------|
| ~SPC m t b~ | Run tests of buffer |
| ~SPC m t B~ | Run tests of buffer with coverage |
** REPL
| Key Binding | Description |
|-------------+-----------------------------------------------------------------|
| ~SPC m s b~ | Send buffer to REPL |
| ~SPC m s B~ | Send buffer to REPL and switch to REPL buffer in =insert state= |
| ~SPC m s e~ | Send last sexp to REPL |
| ~SPC m s E~ | Send last sexp to REPL and switch to REPL in =insert state= |
| ~SPC m s f~ | Send function at point to REPL |
| ~SPC m s F~ | Send function at point and switch to REPL in =insert state= |
| ~SPC m s i~ | Start a REPL or switch to REPL buffer |
| ~SPC m s r~ | Send region to REPL |
| ~SPC m s R~ | Send region to REPL and switch to REPL in =insert state= |
| ~SPC m s s~ | Show and switch to REPL buffer |
** Other key bindings
| Key Binding | Description |
|-------------+---------------------------------------------------------------------------------|
| ~SPC m i l~ | Insert lambda character |
| ~H-r~ | Run current file and open REPL (=H= is hyper, *may* be bound to command on OSX) |