[PATCH v6] Rewrite iconv option parsing [BZ #19519]

[Arjun Shankar]

On Tue, Jul 07, 2020 at 11:54:24AM -0400, Carlos O'Donell wrote:
> OK for master.
> 
> Plese push this so we can include the fixes in 2.32.
> 
> I see Andreas has some suggestions for improving the shell code, but we can
> always clean that up with further changes. I know you have some ideas for
> improving the test coverage and we can tidy this up later.

Thanks! Pushed to master.

I'll address that in a follow up with changes to the test soon enough.
Joseph noted that I was using Bash features, and I took care of that in my
patch before pushing it.