Support more granular comment target

[fidgetingbits]

I did take a look through the issues to see if this was documented somewhere but I didn't find it.

Say I have something like:

if foo && bar && baz
{

}

If I want to temporarily comment out && baz, afaict it's currently not possible to target that, as any target on that line will just comment the entire line.

The idea would be to get something like:

if foo && bar // && baz
{

}

So maybe something like comment tail hat would be good