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Reminder that it's 2026 and batch-mode typesetting seems an oddly low bar for what we can get from a computer.

Tree-structured documents in a live (WYSIWYG) typesetter with a programmable editor are possible, as is demonstrated by https://texmacs.org (https://www.texmacs.org/tmweb/home/videos.en.html if you don't have it installed).

“batch-mode typesetting seems an oddly low bar for what we can get from a computer.”

I don’t know what this is intended to mean.

“a live (WYSIWYG) typesetter”

I don’t like this mode of interaction. No, thanks.

Typst is fast enough to provide a live preview, and I can use Vim or any editor I want, along with my choice of PDF viewer.