On 12/11/17 22:21, Pádraig Brady wrote:
> On 12/11/17 21:52, Paul Eggert wrote:
>> Why doesn't lseek work for this?
> 
> Good call, it probably would.
> Something like the following is more acceptable
> since it adds very little complexity:

Full patch attached with tests.

cheers,
Pádraig