Just a few very simple commands I find useful when editing Lisp in my Emacs, more or less just shorthands for kill-sexp with some minor whitespace cleanup added.
I find myself often in this situation:
(defun ... (&rest _ignored))
(let (|(some-var-I-want-to-remove ( ... ))
(another-var nil)
(more-var))
( ... ))I just want to kill the variable declaration in a let expression, not replacing it with something else. I typically do that with paredit-kill, which is usually very clever. However, in this case, I am left with some whitespace which I have to manually remove:
(let (|
(another-var nil)
(more-var))
( ... ))Of course, no function can know if I want to kill current line and insert something in its place, or if I want to just remove it. Only I can know that in a particular situation, so nothing wrong with paredit-kill. I have been looking in paredit and even some other libraries (paxedit, smartparens and lispy) but I don’t see anything what would fit my bill, so I made my own “evaporate-forward”. It will kill expression after the cursor and also remove all whatespace before and after the cursor resulting in:
(let (|(another-var nil)
(more-var))
( ... ))Evaporeate-backward will do the similar, but if the cursor is behind an expression, it will kill expression before the cursor.
Finally evaporate-space will just remove any whitespace around the point.
Kill-pair-after and kill-pair-before kill two sexps at once and clean whitespace after/before the point.Kill-sexp is already an interactive function, however it leaves whitespace around the point untouched. Kill-pair-* this acts as a small shortcut to kill a pair of sexps and do some cleanup.
Useful in plists, setq/setf and elsewhere where expressions come in a pair.