Re: [PATCH 29/29] t/test-lib: teach --chain-lint to detect broken &&-chains in subshells

> > I'm not sure if there's a good solution, though. Even if you retained
> > the subshells and instead did a chain-lint inside each subshell, like
> > this:
> >
> >   (exit 117) &&
> >   one &&
> >   (
> >         (exit 117) &&
> >         cd foo
> >         two
> >   ) &&
> >   three
> 
> I thought of that too, but the inner (exit 117) doesn't even get
> invoked unless there is &&-chain breakage somewhere above that point
> (for instance, if "one" lacks "&&"), so the inner (exit 117) doesn't
> participate in the linting process at all.

> Some of these dangers can be de-thoothed during the linting phase by
> defining do-nothing shell functions:
> 
>     cp () { :; }
>     mv () { :; }
>     ln () { :; }
> 
> That, at least, makes the scariest case ("rm") much less so.