使用git cherry-pick 解决冲突,commit changes to other branch and resolve conflict

Check out the branch you want to cherry-pick from

Harley bugfix branches have been added to the main Koha git repo, so you don't have to add a new remote repo. There we can find a branch for Bug 3475.

git checkout ptfs/Bug3475

git will warn you "You are in 'detached HEAD' state," but we're just checking out the branch to check the log of commits.

Find the commits to cherry-pick

git log --pretty=oneline

Outputs:

3e86ed85fd595c99bd73292553ef1d09d95e53ae Added Copy Patron button to circ-toolbar
ab97540637691bd73581fed3828c164191c9e0bb Cleared the extended patron attributes from being copied when adding
04566389ae36651daf3dfa117a1088d594632370 Added a copy patron link from moremembers page
595e6a190b9e90cf1371ac0b853999286948c852 Merge branch 'Bug3789' into ptfs-master
fa59e2f7480dc63d7824c5587c82c3f6df3b96ae Bug 3789 Set off shelving location in staff and OPAC title display
38ddef75baeb3f3bd4487cfc25340be9dc2baa4c Merge branch 'Bug3514' into ptfs-master
5d3b6945764cd2a292f822963feca9cf12776605 Extends Bug 3514 syspref to control whether the Return column is acti
279dab8f631ba7aa44b8a35da7f5d43b24d69924 Bug 3514 syspref to control whether the Return column is active in Pa
1f1540f0218d5ad8348700f74c60ad7ca95625b3 Bug 4215 OPAC "Search for title in" can fail with trailing slashes in
6e0cc4061e82c2f861aef1a0db584502c9a3268e Merge branch 'Bug4243' into ptfs-master

Looking at the history in the branch we have to find the earliest change relevant to the feature we want to cherry-pick. If we're lucky we'll be looking at a clean branch that diverges from origin/master for that particular feature/bugfix. In this example we have to make a guess at where the Bug 3475 fixes begin. Probably with 'Added a copy patron link from moremembers page'

Create a clean new branch to work in

Open another terminal window, leaving this one open to the git log output for reference, and create a new branch based on master to cherry-pick into:

git checkout -b bug-3475 origin

Start cherry-picking

Then we'll start the cherry-pick process with the earliest commit relevant to Bug 3475:

git cherry-pick 04566389ae36651daf3dfa117a1088d594632370

In this case the commit applies cleanly and we can proceed to the next ones:

git cherry-pick ab97540637691bd73581fed3828c164191c9e0bb
git cherry-pick 3e86ed85fd595c99bd73292553ef1d09d95e53ae

Resolve conflicts

On the last one we hit a snag:

error: could not apply 3e86ed8... Added Copy Patron button to circ-toolbar
hint: after resolving the conflicts, mark the corrected paths
hint: with 'git add <paths>' or 'git rm <paths>'
hint: and commit the result with 'git commit -c 3e86ed8'

Unfortunately it doesn't tell us what the problems are, so we type:

git status
On branch bug-3475
Your branch is ahead of 'origin/master' by 2 commits.
Unmerged paths:
(use "git reset HEAD <file>..." to unstage)
(use "git add/rm <file>..." as appropriate to mark resolution)
both modified:      koha-tmpl/intranet-tmpl/prog/en/includes/circ-toolbar.inc

Now we can see that circ-toolbar.inc is the file with the conflict. Open the file, look for the standard "<<<<<<< HEAD" marker and edit as necessary. When finished:

git add koha-tmpl/intranet-tmpl/prog/en/includes/circ-toolbar.inc

And then:

git commit -c 3e86ed8

Notice we're following the instructions for git commit as output in the conflict message. This will launch your commit message editor, but you can save without making changes. If this is the last commit to cherry-pick, you're done! It's time to test and make any corrections which are necessary.

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