First, you can import tabbed text files into Tinderbox notes; Tinderbox will create one note for each line, and assign containers appropriately.
[tab] Plan paper on “Games and Kitsch”
[tab] [tab] read Arrendt
[tab] [tab] take another look at Sontag
[tab] Plan workshop abstract
[tab] Tinderbox meetup Saturday
A variant of this is .taskpaper format, which might be useful.
Second, you can import CSV documents in which one column specifies $Container; that will do the job.
We could support recursive import of text files and folders. I’ve not done this, I think, for fear that people would accidentally (or over-optimistically) try to import entire repositories of many thousands of files. Malcolm Davidson’s point is exactly right:
If you only need a handful of folders, importing them individually is dull but sufficient
If you need tens of thousands of folders, each with numerous text documents, this might be outside Tinderbox’s domain.
There’s an interesting gap between these two: if you (are anyone) finds themselves in that gap, do let me know!