Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#1

Post by susam » Thu, Mar 10, 2022, 7:51 PM UTC

Paredit mnemonics for slurping and barfing Lisp symbolic expressions
susam.net

Re: Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#2

Post by draven » Sat, Mar 12, 2022, 12:19 PM UTC

See also: the animated guide to paredit: http://danmidwood.com/content/2014/11/21/animated-paredit.ht... for an animated presentation of those commands, plus a few more.

Re: Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#3

Post by slifin » Sat, Mar 12, 2022, 12:20 PM UTC

I'm learning structural editing at work at the moment, the most useful ones for me so far have been:

- slurp forward

- raise

Re: Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#4

Post by thewakalix » Sat, Mar 12, 2022, 12:21 PM UTC

Congratulations, you came up with a programming verb that’s even more disgusting than “squelch”.

Re: Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#5

Post by casion » Sat, Mar 12, 2022, 1:10 PM UTC

thewakalix wrote: post #4

Congratulations, you came up with a programming verb that’s even more disgusting than “squelch”.

Came up with? Slurp/Barf are _at least_ ~35 years old. Possibly more?

Re: Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#6

Post by Snarwin » Sat, Mar 12, 2022, 1:11 PM UTC

vim-sexp-mappings-for-regular-people [1] uses really easy-to-remember shortcuts for these:

- "backward slurp" is "- "forward slurp" is ">)" (move closing paren to the right)

- "forward barf" is "- "backward barf" is ">(" (move opening paren to the right)

[1]: https://github.com/tpope/vim-sexp-mappings-for-regular-peopl...

Re: Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#7

Post by agumonkey » Sat, Mar 12, 2022, 1:20 PM UTC

next: paredit-convolute-sexp

Re: Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#8

Post by clircle » Sat, Mar 12, 2022, 1:30 PM UTC

Thanks, I will give paredit a shot.

I'm a regular emacs user, but I normally use expand-region[1] and cut/paste to edit lisp code. Expand-region usually knows what I want to move around after just one or two calls, only requires one key binding, and has visual feedback. And it works great in every language I have used.

[1] https://github.com/magnars/expand-region.el

Re: Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#9

Post by charcircuit » Sat, Mar 12, 2022, 2:41 PM UTC

casion wrote: post #5

thewakalix wrote: post #4

Congratulations, you came up with a programming verb that’s even more disgusting than “squelch”.

Came up with? Slurp/Barf are _at least_ ~35 years old. Possibly more?

That doesn't make those terms any less disgusting to use.

Re: Paredit mnemonics for slurping and barfing Lisp symbolic expressions

#10

Post by volforix » Sat, Mar 12, 2022, 2:42 PM UTC

Try smartparens. It's a successor to paredit and works for other languages as well. I have never coded (and navigated code) faster than in Clojure on Emacs w/ smartparens.