How to keep Reviewed-by lines in git commits with gerrit.

[Jonathan Nieder]

Florian Weimer wrote:
> * Jonathan Nieder:

>>>> I would prefer it to be automatically added by the review tool, as
>>>> gerrit is designed to do.
>>>
>>> Is it?
>>
>> The Cherry Pick and Rebase Always submit strategies[1] automatically
>> add Reviewed-by footers.
>>
>> Other submit strategies (like Merge If Necessary) are designed to not
>> touch the change uploader's commit (e.g. they may have signed it) so
>> they don't add the footer.
>
>> [1]
>> https://gerrit-review.googlesource.com/Documentation/concept-changes.html#submit-strategies
>
> I'm confused.  Is it expected that these changes are not visible in
> the commits I can download (under the DOWNLOAD button) or in the web
> UI?  Are they added only during the push?

They are added at submit time, after the review.  At that point, they
show up as one final patch set.  See
https://chromium-review.googlesource.com/c/chromium/src/+/1900995 for
an example.  (The Cr-Commit-Position comes from a chromium-specific
plugin.)

You can use
https://gerrit-review.googlesource.com/Documentation/rest-api-changes.html#submit-preview
to preview it, though that's a bit fussy.