Jonathan Nieder <> writes:

> Jason St. John wrote:
>> git-log.txt: grammatical fixes under --log-size option
> Thanks.
> [...]
>> --- a/Documentation/git-log.txt
>> +++ b/Documentation/git-log.txt
>> @@ -56,10 +56,10 @@ Note that this affects all diff-based output types, e.g. 
>> those
>>  produced by --stat etc.
>>  --log-size::
>> -    Before the log message print out its size in bytes. Intended
>> +    Before the log message, print out its size in bytes. Intended

Either reads well at least for me.

>>      mainly for porcelain tools consumption. If Git is unable to
>> -    produce a valid value size is set to zero.
>> -    Note that only message is considered, if also a diff is shown
>> +    produce a valid value size, this is set to zero.
>> +    Note that only message is considered. Also, if a diff is shown,
>>      its size is not included.
> I have no idea what this option does, before or after the change.

The original is probably more accurate, if harder to read.  The
byte-size of the message part of log output is reported, so that
tools like QGit can slurp that many bytes and then treat the
remainder as a patch (if -p, --stat, etc. were given).

> Perhaps some of the above could make it into a clearer description?
> E.g.,
>       --log-size::
>               Include a line "log size <number>" in the output for each
>               commit, where <number> is the length of that commit's
>               message in bytes.  Intended to speed up tools that
>               read log messages from 'git log' output by allowing them
>               to allocate space in advance.

Yeah, that reads better. We do not have to single out "if also a
diff is shown", as there are other kinds of output that can follow
the message proper, and they are not counted.

> The commit introducing --log-size also says:
>           In case it is not possible to know the size upfront
>           size value is set to zero.
> Is this still true?  When is it not possible to know the size up
> front?

I have no idea ;-)  Perhaps Marco can enlighten us?

> The implementation of --log-size is
>       if (opt->show_log_size) {
>               printf("log size %i\n", (int)msgbuf.len);
>               graph_show_oneline(opt->graph);
>       }
> What happens if the commit message is long enough to overflow a 32-bit
> integer?  Is that impossible for other reasons?  If it is possible,
> (not about this patch) should this be using a 64-bit integer to print
> instead?

A nice low-hanging fruit ;-)

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