[PATCH v2 0/3] Teaching "git push" to map pushed refs

[Junio C Hamano <gitster@pobox.com>]

The 'master' refspec in "git fetch origin master" used to mean "We
grab their 'master' branch, but we do not store it in any of our
remote-tracking branches." but in modern Git, the remote-tracking
branch that would receive updates from 'master' with a corresponding
"git fetch origin" (without any specific refs on the command line)
is updated.  Updating the same refs/remotes/origin/master with

	git fetch origin
	git fetch origin master

avoids surprises.

However, we did not have a similar refspec mapping on the push side.
This three-patch series does just that.  It would help triangular
workflow by making these two:

	git checkout master && git push origin
	git push origin master

update the same ref at the 'origin'.  It also would help those who
need to emulate a fetch run on mothership from satellite with a push
run on satellite into mothership (due to e.g. network connectivity
issues).

The second round avoids instantiating the remote and the list of
local heads until the very last minute when they are actually
needed (the change is in the second patch).

Junio C Hamano (3):
  builtin/push.c: use strbuf instead of manual allocation
  push: use remote.$name.push as a refmap
  push: also use "upstream" mapping when pushing a single ref

 Documentation/git-push.txt |  9 +++--
 builtin/push.c             | 84 ++++++++++++++++++++++++++++++++++------------
 remote.c                   |  8 ++---
 remote.h                   |  2 ++
 t/t5516-fetch-push.sh      | 75 +++++++++++++++++++++++++++++++++++++++++
 5 files changed, 150 insertions(+), 28 deletions(-)

-- 
1.8.5.1-402-gdd8f092