How to implement translatable helptext in python plug-ins like in GIMP 2.10

[nelo]

In GIMP 2.10 python plug-ins we defined some help text in the register function.
It was then displayed in the plug-ins’ dialogue, see here for example:

Unfortunately this is not implemented in GIMP3., which is a pity.
So my question is:
Can I/ how can I have this in my plug-ins?
Challenge: it must be translatable.

[brunvonlope (Bruno)]

Someone talked/reported about that before but I am unable to find where.

@pixelmixer It was you?

[Ofnuts]

AFAIK this text is the “hover” text (displayed when the mouse is over the menu entry). So it is not meant to contain a long text.

You can have “hover” help text for each field in the dialog.

[nelo]

Ok, half solved now: found some solution meanwhile…

I put my helptext in this:

dialog.get_label("helptext", 
        	_("Here goes my super helptext.\n\n"), 
              True, False)

and add it via dialog.fill

What I would really like to do is putting the text in a variable that I can use at both places (helptext in dialog and hover text).

But the translation only works like this.