This quote “thing” is discourse specific with their own javascript.
The native dataTransfer object of the browser does not contain this info. It only contains an HTML-snippet and a plain/text snippet if copied over to TW.
Copy / pasting the quoted text above will create this $:/Import tiddler. ATM there is no way to detect, if the pasted info came from discourse or any other site.
It should be possible to analyse code snippets of a text/plain format that have a TW header that starts with a title-field. If we detect text/plain only and the first line contains title: xxx we would be able to add a second import option as a tiddler.
I think that’s the best we could do, with the info available in the dataTransfer object.
title: test tiddler
my-field: a b c
some text