[stephan-cr]

> The biggest Issue is that error handling is completely broken in POSIX shell scripting (including Bash). Even errexit doesn't work as any normal language would implement it (One could say it is broken by design).

I guess you're referring to http://mywiki.wooledge.org/BashFAQ/105. Got recently hit by these as well.

[arendtio]

Yes and my personal favorite: Functions can behave differently depending on, if they are being called from a conditional expression vs. from a normal context. Errexit has no effect if the function is called from a conditional expression.