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Nifty new Lisp refactoring bindings

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Howard Abrams 2023-08-16 17:38:32 -07:00
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@ -61,6 +61,14 @@ And we should extend it with the [[https://github.com/xuchunyang/elisp-demos][el
(advice-add 'helpful-update :after #'elisp-demos-advice-helpful-update))
#+end_src
Find a function without a good demonstration? Call =elisp-demos-add-demo=.
Wilfred’s [[https://github.com/Wilfred/suggest.el][suggest]] function helps you find the right function. Basically, you type in the parameters of a function, and then the desired output, and it will write the function call.
#+begin_src emacs-lisp
(use-package suggest
:config
(ha-local-leader :keymaps '(emacs-lisp-mode-map lisp-mode-map)
"H" '("suggestions" . suggest)))
#+end_src
* Navigation and Editing
** Goto Definitions
Wilfred’s [[https://github.com/Wilfred/elisp-def][elisp-def]] project does a better job at jumping to the definition of a symbol at the point, so:
@ -128,6 +136,7 @@ My primary use-case is for its refactoring and other unique features. For instan
"r f" '("flatten" . lispy-flatten)
"r b" '("bind var" . lispy-bind-variable)
"r u" '("unbind var" . lispy-unbind-variable)
"r >" '("to thread last" . lispy-toggle-thread-last)
"e d" '("edebug" . lispy-edebug)
"e j" '("debug-step-in" . lispy-debug-step-in)
@ -287,6 +296,34 @@ And we just need to bind it.
(ha-local-leader :keymaps '(emacs-lisp-mode-map lisp-mode-map)
"e e" '("current" . ha-eval-current-expression))
#+end_src
** Refactoring
Wilfred’s [[https://github.com/Wilfred/emacs-refactor/tree/master#elisp][emacs-refactor]] package can be helpful if you turn on =context-menu-mode= and …
#+begin_src emacs-lisp
(use-package emacs-refactor
:general
(:states '(normal visual) :keymaps 'emacs-lisp-mode-map
;; Often know what functions are available:
", r r" '("refactor menu" . emr-show-refactor-menu)
;; These are my favorites ...
;; Extracts the current s-expression or region to function:
", r F" '("to function" . emr-el-extract-function)
", r V" '("to variable" . emr-el-extract-variable)
;; Converts the current let to a let*
", r *" '("toggle let*" . emr-el-toggle-let*)
;; asks for a variable, and extracts the code in a region
;; or the current s-expression, into the nearest let binding
", r l" '("to let" . emr-el-extract-to-let)))
#+end_src
The idea of stealing some of Clojure Mode’s refactoring is brilliant (see [[https://isamert.net/2023/08/14/elisp-editing-development-tips.html#clojure-thread-lastfirst-all-from-https-github-com-clojure-emacs-clojure-mode-clojure-mode][the original idea]]), however, I’m already using Lispy’s =toggle-thread-last=.
#+begin_src emacs-lisp :tangle no
(use-package clojure-mode
:general
(:states '(normal visual) :keymaps 'emacs-lisp-mode-map
", r >" '("to thread last" . clojure-thread-last-all)
", r <" '("to thread first" . clojure-first-last-all)))
#+end_src
* Technical Artifacts :noexport:
Let's =provide= a name so we can =require= this file: