[PATCH 0/3] add "call" command

[Rasmus Villemoes <rasmus.villemoes@prevas.dk>]

On 25/09/2020 15.09, Wolfgang Denk wrote:
> Dear Heinrich Schuchardt,
> 
> In message <4b00225d-d960-4a14-9aec-110ddddf7f30@gmx.de> you wrote:
>>
>> Further we cannot first introduce a command call and then eliminate it
>> due to backward compatibility. We should decide on the final version
>> beforehand.

Please note that I never meant for

  f a b c

to be an eventual replacement for

  call f a b c

the latter syntax would continue to be accepted. And I'm personally
completely fine with that being the _only_ way to call a
function-defined-in-the-environment-with-positional-args, which also makes

>> I am
>> not sure if a built in command should take precedence over a variable of
>> the same name or the other way round.

a moot point.

So can we instead discuss whether the "call" command is worth having at
all. I notice that Wolfgang calls this a nice idea (thanks), but
soft-NAKs it because he'd rather see all of hush updated before adding
extra features. The thing is, I can't take that monumental task on me
(especially with all the backwards-compatibility concerns there'd be,
with various scripts in the wild that may have come to rely on U-Boot's
hush parser's behaviour in corner cases), but doing cmd_call is about
100 lines of mostly stand-alone code.

Rasmus