Wait for @fvogt and @kbroulik to confirm, but in general ok with me.
Please update the text in the .h file. and make it clear that these are in addition to the ones in the spec.

I was thinking if I should also add "th" for a more complete table tag set, but decided to keep it minimal.

There was a discussion about this on IRC quite some time ago:

13:01 < d_ed> fvogt: kbroulik_: can I have your opinion on https://bugs.kde.org/show_bug.cgi?id=390375
13:01 < sKreamer> KDE bug 390375 in plasmashell (Notifications) "Klipper notifications visually broken since plasma 5.12" [normal,] https://bugs.kde.org/show_bug.cgi?id=390375
13:03 < kbroulik_> d_ed: lol "up", "current", "down"
13:03 < fvogt> Fixing klipper is IMO better
13:03 < kbroulik_> yes
13:03 < kbroulik_> but we also have no <font> tag anymore, right?
13:03 < d_ed> no, just "b"
13:04 < kbroulik_> so let's change it to
13:04 < kbroulik_> <b>current:</b> fobar

and later

16:28 < kbroulik_> d_ed: did you do a klipper patch for Bug 390375 else I will

So looks like this was just forgotten? Maybe @broulik remembers what the best option was.

IMO, aligned text makes it much more readable at a quick glance. Thus, just from the pure appearance POV I would prefer the current solution.

Do you have commit access?

I do not have commit access. Could you please commit this for me? I think it should also go to 5.12 beside the master branch.