So we would be on same page here:
tr-d is not a valid html tag name, but since it has a hyphen in it, it is now considered as custom element and custom elements are part of web components.

Characters that could be used in tag name of custom elements are described in xml specification. Like _ and . are also included in that class. So if we fully support custom elements do we need to add tests for names with _ and . characters?

But this discussion could be deferred and i let @dmethvin answer that.

Apart from that, this looks like real use-case and real bug, there is two problems with this particular case: first with rsingleTag regexp and second one with rtagName one.

Your commit, mentioned in this ticket, would resolve <tr-d></tr-d> case, but not <tr-d></tr-d><tr-d></tr-d>.

This is why even div-d fails rsingleTag check, it still works, since buildFragment doesn't feel the need to wrap it with special parent tag.

Would you like to send us PR for both?

Would you like to send us PR for both?

Preferable with two commits in it, one for core and one for manipulation module, don't forget to read http://contribute.jquery.org/ if you feeling up to it

Thanks for the instructions, and yes, I'd like to submit a PR for it.

Just to be clear and fair, issue was initially reported and patched by @gkalpak on Angular.js repo. It just happened that I bumped into it at the same time and tried to share the load.

To be even more clear and fair, @elaijuh first reported it on the AngularJS repo.
I submitted a PR for AngularJS (as did @richardaday).

@LeonardoBraga: I am glad you are sharing the load (since I am not familiar with jQuery's contributing conventions 😃).

_{(Seems like a whole lot of people are involved into this one-character addition 😆 How cool is that ?)}

cool to see this, thanks all for helping on this.

Do we know in which version this is going to be included ?
_{(Sorry, I am not familiar with jQuery's release process.)}

Do we know in which version this is going to be included ?

3.0

This has been backported to 1.12.0 & 2.2.0 so I changed the milestone.