Avoid git push output on stderr

[bmontuelle]

Hello,

I was annoyed with git push output to stderr putting red error in release plugin output log. I see the log info message and issue #20 about it but I though it would be cleaner to avoid it completely.

I used git's push --porcelain switch to keep some useful info on the output (rev sha1 being pushed), but --quiet could have done it too.

Do you think this could be merged or is there another improvment we can add to this ?

Best regards,

[patrickliangli]

+1

Some build tools/systems check for [success] and [error] to determine if a build is successful or not, and having the git messages come out as [error] will fail the build even though everything is successful.

But doing quiet or porcelain seems to suppress real [error] messages.

[jroper]

Suppressing real error messages is a problem. The sbt process API allows passing a ProcessLogger, the default one that SBT uses forwards stderr to stderr, but you can implement one to forward stderr to stdout.

[jroper]

I've implemented this in #147, logging the git output at info.