[cmiller1]

It's pretty nicely put together and commented, still trying to work through exactly how the interleave steps work though.

[davidten]

I’m one of the organizers of Hack N Roll and personally know the guy who built this.

He says that the code on Github is actually broken but he forgot in what way.. I still think it’s pretty cool though

[saevarom]

I tried running this on a Mac but got an error. Assumed it was because of some sed version difference. Perhaps the code on Github is just broken.

[kritixilithos]

That's probably because you used BSD sed. Running it on my BSD sed also gives an error, presumably because it thinks the `}` is a part of the label in `binput}`.

However it works fine in GNU sed, and now that you mention it, GNU sed's extensions were not used, like the `-z` flag to slurp all input in one "line" to avoid `:input;$!{N;binput}`.

[bjoko]

On macOS: install gnu-sed via Homebrew.

[NeccoNeko]

It works with the GNU sed that ships with GitBash on Windows.