[emacs-berlin] A riddle to be solved with Emacs

[Jack Rusher]

Something like this should do it (assuming you’ve got just the lines in the file):

M-x replace-regex
^(.*),
{ value: \,(downcase \1), label: \1 }

… the important points:

1) set a capture group that excludes the comma for each string in the match
2) use an elisp function in the replacement :)

There’s a video in this tweet showing an example of cleaning up some XML with this technique:

https://twitter.com/jackrusher/status/1306591797506797570


MfG,

J.

On 7 Jun, 2021, at 13:23, jman <emacs-berlin at city17.xyz> wrote:
> ---snip-snip-snip-snip-snip---
> [
> "ONLY CAPITAL CASE",
> "ALSO THIS ONE",
> "HANDS ARE TYPING",
> "NO WEIRD CHARS, ONLY LETTERS, NUMBERS AND PUNCTUATION",
> ...
> ]
> ---snip-snip-snip-snip-snip---
> 
> You want to transform it into a JSON where each label goes into a `label`
> field, plus a `value` field with a "slug" of the label. A "slug" is a
> conversion of some text replacing puntuation and whitespaces with
> hyphens, example follows:
> 
> ---snip-snip-snip-snip-snip---
> [
> { value: "only-capital-case", label: "ONLY CAPITAL CASE"},
> { value: "also-this-one", label: "ALSO THIS ONE"},
> { value: "hands-are-typing", label: "HANDS ARE TYPING"},
> { value: "only-letters-numbers-and-punctuation", label: "ONLY LETTERS, NUMBERS AND PUNCTUATION"},
> ...
> ]
> ---snip-snip-snip-snip-snip---
> 
> I've tried either using the `multiple-cursors` package, I've tried
> learning my first macro, I've tried with `M-x query-replace-regexp`. All
> my attempts have failed. I could not learn how to use these by reading
> the documentation.
> 
> My solution: ended up with 10 lines of Python :-/
> 
> So, who's up for some Emacs-fu? :-) Thanks!
> 
> p.s. I had to set Emacs in `so-long` mode because it struggled with a
> 1000 lines file (I'm on Emacs native-comp).
> 
> Best,
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