On Tue, 26 Sep 2017, Chet Ramey wrote:

>> Yeah, but still doesn't answer the question, application-wise.  I'm 
>> gonna guess (without digging through the source) that it's a "dup2(0, 
>> 255)*" or something, to "save" a copy of stdin/out/err for some obscure 
>> reason.
>
> I already answered this.

You didn't, actually, but I'll be generous and assume that you genuinely 
missed my point as opposed to being deliberately obtuse; I don't think I 
can make it any clearer, but I see that Larry "got it".

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."