[PATCH 3/3] ash: exec: -a option for setting zeroth arg

[Kaarle Ritvanen]

On Wed, 12 Apr 2017, Kang-Che Sung wrote:

> Back in January 2017, a person named Patrick Pief has suggested a similar patch
> to add "exec -a" support:
> 
> http://lists.busybox.net/pipermail/busybox/2017-January/085146.html
> 
> Is your patch same as his or is there any difference?

My patch parses the '-a' option in execcmd, thus not affecting the 
behavior of shellexec when called from evalcommand. In addition, my patch 
uses getopt, making it a bit easier to add more options later.

Is there any reason not to merge my or Patrick's patch? If you prefer my 
patch, I can make the changes requested by Bartosz.

BR,
Kaarle