Why no 'single-quoted strings'

[eugenesvk]

I'm curious why "regular" strings are only "double-quoted" and not alternatively 'single-quoted'?

The single quotes have a tiny edge - they're less visible :) and also don't require ⇧ by default, so would be interesting to know what the design considerations were that excluded them

[tabatkins]

Double quotes tend to be considered the canonical quoting character when there's a choice, in many languages. And the main reason to have both is to let you avoid needing to use an escape when you want to write something with a double-quote in it, but that's avoided by the use of a raw string in KDL.

Notably, JSON also requires the use of double-quotes.

[eugenesvk]

And the main reason to have both is to let you avoid needing to use an escape when you want to write something with a double-quote in it, but that's avoided by the use of a raw string in KDL.

Raw strings are great (and I think using a literal prefix r to signal type and a different symbol # instead of quote repetition a better design), but then there are the two other benefits I mentioned on the input and output side that single quotes have, so unless it breaks something would be nice to also have them

Notably, JSON also requires the use of double-quotes.

and it's an even bigger issue with JSON since it has more quotes (for keys). At leas in KDL you have non-quoted nodes

[Diegovsky]

I would love to have this. It honestly saves me a lot of typing tbh.

[zkat]

It’s worth noting that kdl v2 already supports quoteless strings. That will probably save you more typing in the long run than not having to hold shift :)

[Diegovsky]

hey good to know! I'm a bit OOTL here: when is it releasing?

[zkat]

There's already two implementations with prerelease implementations of kdl v2 (kdl-rs for Rust, and ckdl for Python, C, C++). See #372

Once we've worked out a couple of final items, we'll decide whether it's time to officially tag v2. There's only a couple of open questions we want to make sure we've got resolved, now that we have people who have actually implemented it and tried it out.