bug#15680: dd: suggest iflag=fullblock ... but only if count > 1

[Pádraig Brady]

On 10/22/2013 11:26 AM, Bernhard Voelker wrote:
>>  On October 22, 2013 at 11:25 AM Pádraig Brady <address@hidden> wrote:
>>  Also I mentioned this particular case with count at:
>>  http://bugs.gnu.org/9734#18
>>  
>>  Copying from there...
>>  
>>  "Note the particular case where count=1 is not warned about,
>>  as with a single read, one doesn't know if we're just at EOF.
>>  Also it's probably a quite common idiom to, consume available data
>>  up to $bs bytes."
> 
> Thanks.
> To avoid that this question comes up again: should we add
> this into the Texinfo file?

Maybe, though we have to be careful of coupling the
docs too tightly with the code.
Worth a source comment at least.