Hello! I compared many shells for bash compatibility, including toysh:
https://pages.oils.pub/spec-compat/2025-06-26/renamed-tmp/spec/compat/TOP.html toysh passes 809 tests, out of ~2200: https://pages.oils.pub/spec-compat/2025-06-26/renamed-tmp/spec/compat/PASSING.html What's the motivation for this? Well, two months ago, I thought that toysh and OSH (part of https://oils.pub/ ) were the only projects aiming for bash compatibility. But then I learned there are TWO shells in Rust aiming at bash compatibility, both started in 2022 - in this thread https://news.ycombinator.com/item?id=43908368 So I thought you may be interested in this. A few years ago I transcribed some tests from toybox, so thanks for that: https://pages.oils.pub/spec-compat/2025-06-26/renamed-tmp/spec/compat/toysh.html https://pages.oils.pub/spec-compat/2025-06-26/renamed-tmp/spec/compat/toysh-posix.html --- I've contacted the authors of the other shells as well -- there seems to be a lot of duplicated effort! The author of brush has expressed interest in using these spec tests, so I am thinking of turning into something more "cross project" I would even call it "Bashix" -- a superset of POSIX, that multiple shells could agree on -- so that users have a stable and well-defined language to write. I've noticed for a long time that there is a LOT of behavior that multiple shells agree on, e.g. assignment builtins, other builtins, and arrays, that is not in POSIX. I'm not sure how much time / motivation various authors have, but it would probably be useful to coordinate. e.g. I notice many questions about alias on the blog. OSH has mostly figured those things out, although now that I look, it doesn't quite match bash, although it is tied for the #2 in terms of tests passing: https://pages.oils.pub/spec-compat/2025-06-26/renamed-tmp/spec/compat/alias.html (I don't think bash is always right, but often it is.) Andy _______________________________________________ Toybox mailing list Toybox@lists.landley.net http://lists.landley.net/listinfo.cgi/toybox-landley.net
