[lhoursquentin]

The lack of arrays, dicts and local variables when trying to be POSIX compliant becomes quickly annoying when writing big programs though. There are of course workarounds to deal with those but I wish we didn't have to use them.

[masklinn]

Needing arrays, dicts, and local variables is a strong hint that you need something more capable than a shell. So is calling the artefact a program.