fix: make this work on stable rustc

[M1cha]

get: We're using proc_macro2 already so I don't see any harm in using it's implemenation for that.

extend_one: The nightly implemenation just calls extend(Some(x)) anyway so there's no use in using it until it's actually stable.

[abishekatp]

Thank you, I will just check one time locally and merge it.

[abishekatp]

Sorry for this but I think this still works only on nightly version of rust. As mentioned here it will work on only on nightly version when used with procedural macro context. try printing out start and end values on the stable channel of rust it will always return value 0. so it will fail the test case.

[M1cha]

you're right. It looks like I was testing stuff without whitespace only. You could actually just force stable users to quote their stuff to work around that :thinking:

[abishekatp]

• Yeah we can do that. But the thing is we have started this project so that we don't need to quote the css. It should look like native. That's what I am thinking about.
• Since style_sheet macro implementation already handles the string respresentation of style sheet we could add some feature tags. Then enable stable as one feature where we can use style quoted by string. We can just pass the whole string to the build_style function here.

[M1cha]

I agree that - as is - this PR doesn't work. I'm using nightly now :shrug: