Re: [PATCH] Add --show-size to git log to print message size

> On 7/16/07, Marco Costalba <mcostalba@gmail.com> wrote:
>> Currently the patch just include the log message because the diff
>> content (-p option) is not buffered but is written with a combination
>> of printf, puts, fputs, fwrite and putchar directly to stdout.
>>
>> My question is, there is a way to get the quantity of bytes written to
>> stdout before they are printed? I'm not an expert of C stdio library,
>> so perhaps this is nonsense, but I was thinking of reading the size of
>> stout buffer before to fflush() (I don't know if it is possible).
>
> It is not possible. Buffers can be flushed at any time (i.e. they are
> flushed when EOL reached and the output is a terminal for stdout).
>
> It is also a bit unclear _why_ do you need the diff output. You don't
> show it immediately anyway.