On Wed, May 31, 2017 at 11:40 PM, Jeff King <peff@xxxxxxxx> wrote:
> On Wed, May 31, 2017 at 08:08:54PM +0200, Ævar Arnfjörð Bjarmason wrote:
>
>> $ git log --grep=bar --author=Ævar --pretty=format:%an -100 origin/pu
>> |sort|uniq -c|sort -nr
>> 5 Ævar Arnfjörð Bjarmason
>>
>> $ git log --author=Ævar --pretty=format:%an -100 origin/pu |sort|uniq
>> -c|sort -nr
>> 100 Ævar Arnfjörð Bjarmason
>>
>> $ git log --grep=bar --invert-grep --author=Ævar --pretty=format:%an
>> -100 origin/pu |sort|uniq -c|sort -nr
>> 78 Junio C Hamano
>> 14 Jeff King
>> 2 Andreas Heiduk
>> 1 Sahil Dua
>> 1 Rikard Falkeborn
>> 1 Johannes Sixt
>> 1 Johannes Schindelin
>> 1 Ben Peart
>> 1 Ævar Arnfjörð Bjarmason
>>
>> That last command should only find my commits, but instead --author is
>> discarded.
>
> I would have thought that the last command wouldn't find _any_ of your
> commits. Don't we consider --author a greppable pattern and invert it?
There's two unrelated things going on here AFAICT:
* Anthony expected --author to be inverted by --invert-grep, but this
is not how it's documented, it's *only* for inverting the --grep
pattern: "Limit the commits output to ones with log message that do
not match the pattern specified with --grep=<pattern>."
* The --author filter should be applied un-inverted, but isn't, it's
seemingly just ignored in the presence of --grep, actually mostly
ignored, this is bizarre:
$ diff -ru <(git log --grep=bar --invert-grep --pretty=format:%an -100
origin/pu |sort|uniq -c|sort -nr) <(git log --grep=bar --invert-grep
--pretty=format:%an -100 --author=WeMostlyIgnoreThisButNotReally
origin/pu |sort|uniq -c|sort -nr)
--- /dev/fd/63 2017-06-01 21:44:08.952583804 +0200
+++ /dev/fd/62 2017-06-01 21:44:08.952583804 +0200
@@ -1,6 +1,6 @@
- 66 Junio C Hamano
+ 65 Junio C Hamano
10 Jeff King
- 8 Stefan Beller
+ 9 Stefan Beller
5 Lars Schneider
2 SZEDER Gábor
1 Tyler Brazier
> By itself:
>
> $ git log --author=Ævar --invert-grep --format=%an -100 origin/pu |
> sort | uniq -c | sort -rn
> 79 Junio C Hamano
> 8 Stefan Beller
> 8 Jeff King
> 1 Sahil Dua
> 1 Rikard Falkeborn
> 1 Johannes Sixt
> 1 Johannes Schindelin
> 1 Andreas Heiduk
>
> So that makes sense from the "--author is invertable" world-view.
>
> But I'm puzzled that you show up at all when --grep=bar is added (and
> moreover, that we get _one_ commit from you, not the 5 found in your
> initial command). That seems like a bug.
I think that's the only thing that's not a bug, i.e. we just find 1
match in the first 100 (note -100), sorry for the confusing example.
Anyway, much of the above may be incorrect, I haven't dug deeply
beyond just finding that something's funny going on and we definitely
have *some* bugs here.