Add missing cmd to nu command

[Kissaki]

Add if defined expression via scope variables

[fdncred]

Thanks

[NotTheDr01ds]

How about?

if '$<variable>' in (scope variables).name { <command> }

[Kissaki]

@NotTheDr01ds I see. Not having to define a closure arguably means simpler syntax.

I wasn't aware in could be used like that, with a list-collect+path-get.

I was thinking about potential performance differences as well, but it seems like (scope variables).name would or could be streaming data in the same way.

Overall, I don't think there's a clear winner. They're alternative query approaches. Makes me wonder if adding both alternatives would make sense.

[fdncred]

I do think this is more nushell idiomatic. This example should probably be updated.

'$rn' in (scope variables).name

[Kissaki]

I created #1643 for it.