bug#21325: ls : feature request --width=zero

[Paul Eggert]

Pádraig Brady wrote:
> If a limit, then 0 naturally implies no limit. If a length, then 0 is 
> meaningless.

It's not meaningless. It means length 0. Length -1 would be meaningless.

That being said, I'm tired of fighting this issue, so please feel free to go 
ahead and have 0 mean infinity to the user. But surely this can be done better 
than to have SIZE_MAX mean infinity internally. Just use 0 to mean infinity; 
that's less confusing, if that's what 0 means externally. In other words, use 
SIZE_MAX to stand only for itself, and use 0 to stand for infinity.