That library is just a simple implementation of some basic commands. It does not do any executable execution, it does not use the real system utilities. Nor does it has anything to do with Bash, or shell scripts. It’s just basically one big ‘switch’ for all commands, which are implemented in the app itself.
I saw this mentioned on a blog that I read only last night:
Blink Shell: Mosh & SSH by Carlos Cabanero
It’s $20, so I haven’t tried it yet. UI looks good and reviews seem positive. I am not affiliated with the app or dev.
It's also open source and pretty easy to build yourself if you have Xcode around.
Could there be an app that has a Python interpreter built into it, so that the logic of the app used Python, with just a Swift/ObjC UI on top of it?
I think that policy changed around 2011.
Could there be compatiblity wrappers for rsync/scp, falling back to curl?
I'm also not that into green on black. Any plans for themes?