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git:merge-into-master [2009/04/16 13:27]
andrei
git:merge-into-master [2012/12/11 16:50] (current)
oej old revision restored
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   * if you don't have a local **master** branch tracking **origin/master** (git branch|grep master is empty)   * if you don't have a local **master** branch tracking **origin/master** (git branch|grep master is empty)
 <code> <code>
 +git fetch origin
 git checkout --track -b master origin/master git checkout --track -b master origin/master
 </code> </code>
Line 10: Line 11:
 <code> <code>
 git checkout master git checkout master
-# make sure master is up-to-date +# make sure we have the up-to-date "origin" branches 
-git pull --ff origin master+git fetch origin 
 +# make sure the local "master" branch is up-to-date 
 +git pull --rebase origin master 
 +</code> 
 + 
 +  * do the actual merge 
 + 
 +<code> 
 +# merge the branch into the local "master" branch
 git merge --log --no-ff origin/branch_to_merge # for older git version, make sure merge.summary is true and skip --log git merge --log --no-ff origin/branch_to_merge # for older git version, make sure merge.summary is true and skip --log
 git log -1 # make sure you see a correct merge message (with summary), if not abort git log -1 # make sure you see a correct merge message (with summary), if not abort
 +git log ORIG_HEAD.. # make sure the commits shown are what you wanted to merge, if not abort
 gitk # optional, look if the commit tree looks ok gitk # optional, look if the commit tree looks ok
 # only if everything is ok and you looked at the log # only if everything is ok and you looked at the log
 +# push the changes on the local "master" branch to the repository "master" branch
 git push origin master:master  git push origin master:master 
 </code> </code>
  
-  * if you did something wrong and pushedand it cannot be easily corrected by a git revert, send an email to sr-dev@lists.sip-router.org asking to revert master to the previous state (this should be avoided in general since it would cause extra work for all people who fetched or pulled master in the meantime)+  * if you did something wrong and pushed and it cannot be easily corrected by a git revert, send an email to sr-dev@lists.sip-router.org asking to revert master to the previous state (this should be avoided in general since it would cause extra work for all people who fetched or pulled master in the meantime)
  
-  * if you need to abort or undo a merge attemptyou don't have any local changes that you want to keep and you haven't pushed back to origin (if you did, see above), use:+  * if you need to abort or undo a merge attempt and you don't have any local changes that you want to keep and you haven't pushed back to origin (if you did, see above), use:
 <code> <code>
 git reset --hard ORIG_HEAD  # WARNING: all local changes to the current branch will be lost git reset --hard ORIG_HEAD  # WARNING: all local changes to the current branch will be lost
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   * don't try to merge the reverse way, e.g.: git checkout my_branch; git merge master; git push origin my_branch:master. The merge is equivalent to the above one (from the code point of view), but the merge commit message will be wrong.   * don't try to merge the reverse way, e.g.: git checkout my_branch; git merge master; git push origin my_branch:master. The merge is equivalent to the above one (from the code point of view), but the merge commit message will be wrong.
 +
 +===== GIT commit from local branch into master =====
 +
 +If all you want to do is commit some changes you have in a local branch (called "my_local_branch" from now on), then you could use:
 +<code>
 +# change to my local branch
 +git checkout my_local_branch
 +# make sure we have the latest version of the "origin" branches
 +git fetch origin
 +# rebase "my_local_branch" to the current origin/master
 +git rebase origin/master
 +# if everything is ok and you don't have any rebase conflicts, push the 
 +# changes to the repository master branch
 +git push origin my_local_branch:master
 +</code>
 +Alternatively you could use git pull --rebase instead of git rebase:
 +<code>
 +# change to my local branch
 +git checkout my_local_branch
 +git fetch origin
 +# rebase on the latest origin/master version
 +git pull --rebase --ff origin master
 +# if everything is ok and you don't have any rebase conflicts, push the 
 +# changes to the repository master branch
 +git push origin my_local_branch:master
 +</code>

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