QuickLook for LaTeX (and other?) text files stopped working (macOS 13?)

Some time recently (possibly with the Ventura upgrade; I'm not sure) quicklook behaviour got worse. In particular, *.tex (TeX/LaTeX) files stopped previewing entirely; instead they show a message > The extension com.apple.tips.TipsAppQuicklook-macOS does not implement file previews which seems to be weirdly trying to assign the quicklook to something related to "Tips". I note * ~/Library/Application\ Scripts/com.apple.tips.TipsAppQuicklook-macOS exists, but it is an empty folder. * mdls -name kMDItemContentType gives kMDItemContentType = "org.tug.tex" * I *think* the previews used to be handled by TextMate which also showed full syntax-highlighted previews. TextMate still has an org.tex.tug entry in its Info.plist. * Preview icons are still shown correctly. * Most other text file types seem to work, albeit without syntax highlighting, with an "Open with _some app_" button on the top of the preview window, pointing to TextEdit, Xcode, Textmate, or even Emacs depending on the file type. (Emacs files seem to get syntax highlighting?!) * org.tug.tex does not appear in qlmanage -m plugins, although org.tug.tex.bibtex and org.tug.tex.dvi do. * There is no ~/Library/QuickLook directory. * I have tried qlmanage -r, qlmanage -r cache and a restart, to no avail. Other people have similar problems, as seen on [tex.SE](https://tex.stackexchange.com/questions/663924/quicklook-on-macos-ventura-not-working-anymore-for-tex-files) **Update**: This [Apple support forum thread](https://discussions.apple.com/thread/254334388) seems to have some more information. It implies that Apple has deprecated old quick look generators, but I don't think that this can be the whole problem, since it seems to work -- including via TextMate -- for some types. **Update 2**: not fixed in 13.1, alas. **Update 3**: [This app](https://github.com/sbarex/SourceCodeSyntaxHighlight#install-with-homebrew-cask) seems to work as a quicklook previewer for a wide variety of file types, including TeX and CSS. (Thanks to [this answer on the related thread](https://tex.stackexchange.com/a/667435/72039).) Any ideas?