However with regards to your other matter, I personally just finished rewriting the job control code to close out a lot of long standing bugs affecting correctness and child process behavior in complicated scripting cases, and other members like @faho have done an amazing job fixing up some of the builtins and scripting-related improvements as well as putting in insane effort into the interactive behavior of the shell and its insane library of completions.

Try the current fish master builds and see how if fares. If you have any specific concerns, please file a GitHub issue. It’s an open source project and it can only succeed with the help of the entire community.

fwiw I find the sanity fish brings to process substitution with sane tokenization and automatic escaping of shell substitution output to be a huge boon to productivity over writing in (ba)sh. These days, my scripts are either written in ninja or bmake if they are rule/output driven or fish otherwise.