Re: Confused about github rebasing
On 2012-03-16 04:52, James Miller wrote: Also, git-svn isn't actually that bad... It is. You can't properly use git because you have to make sure it's compatible with svn, like linear history. If you don't have a linear history you're in big trouble. -- /Jacob Carlborg
Re: Confused about github rebasing
On Friday, March 16, 2012 08:52:47 Jacob Carlborg wrote: On 2012-03-16 04:52, James Miller wrote: Also, git-svn isn't actually that bad... It is. You can't properly use git because you have to make sure it's compatible with svn, like linear history. If you don't have a linear history you're in big trouble. Yeah. I use git-svn at work, because I like it a lot better than using pure svn, but it's _nowhere_ near as good as pure git. There are just too many features that you have to be careful with or avoid. - Jonathan M Davis
Re: Confused about github rebasing
On 2012-03-16 09:08, Jonathan M Davis wrote: On Friday, March 16, 2012 08:52:47 Jacob Carlborg wrote: On 2012-03-16 04:52, James Miller wrote: Also, git-svn isn't actually that bad... It is. You can't properly use git because you have to make sure it's compatible with svn, like linear history. If you don't have a linear history you're in big trouble. Yeah. I use git-svn at work, because I like it a lot better than using pure svn, but it's _nowhere_ near as good as pure git. There are just too many features that you have to be careful with or avoid. Exactly, you need to be very careful and follow a strict workflow to avoid breaking svn. -- /Jacob Carlborg
Re: Confused about github rebasing
On 15-03-2012 20:13, H. S. Teoh wrote: I'm trying to submit a pull request for druntime, but I'm running into a git problem. This is what I did: - (I forgot that my master branch is out of date) - created a new branch for the fix and committed some changes - switched to master and ran 'git pull' - now master is ahead of the branch by a number of commits - switched back to branch - ran 'git rebase master' to pull in changes from master and apply my changes on top of it - checked that history looks clean - 'git push -u origin newbranch' - submit pull request: but now github thinks my branch has a whole bunch of commits I didn't make (looks like the commits made by rebase). So my question is, what did I do wrong, and what's the right way to pull in the latest changes from upstream without messing up the history? T Let's say you're on your branch with your commits. You have a remote called dpl, which is upstream. So: $ git fetch dpl $ git pull --rebase dpl master $ git push origin your branch -f Note the -f, since you're overwriting remote history in your repo. -- - Alex
Re: Confused about github rebasing
On Thu, Mar 15, 2012 at 08:59:57PM +0100, Alex Rønne Petersen wrote: On 15-03-2012 20:13, H. S. Teoh wrote: I'm trying to submit a pull request for druntime, but I'm running into a git problem. This is what I did: - (I forgot that my master branch is out of date) - created a new branch for the fix and committed some changes - switched to master and ran 'git pull' - now master is ahead of the branch by a number of commits - switched back to branch - ran 'git rebase master' to pull in changes from master and apply my changes on top of it - checked that history looks clean - 'git push -u origin newbranch' - submit pull request: but now github thinks my branch has a whole bunch of commits I didn't make (looks like the commits made by rebase). So my question is, what did I do wrong, and what's the right way to pull in the latest changes from upstream without messing up the history? T Let's say you're on your branch with your commits. You have a remote called dpl, which is upstream. So: $ git fetch dpl $ git pull --rebase dpl master $ git push origin your branch -f Note the -f, since you're overwriting remote history in your repo. [...] OK thanks! Another question. How to I repair my current history, which is all messed up now? That is, my branch has a whole bunch of commits I didn't make; how do I clean it up? Or is it easier to start from scratch? :) T -- If Java had true garbage collection, most programs would delete themselves upon execution. -- Robert Sewell
Re: Confused about github rebasing
On 15-03-2012 21:49, H. S. Teoh wrote: On Thu, Mar 15, 2012 at 08:59:57PM +0100, Alex Rønne Petersen wrote: On 15-03-2012 20:13, H. S. Teoh wrote: I'm trying to submit a pull request for druntime, but I'm running into a git problem. This is what I did: - (I forgot that my master branch is out of date) - created a new branch for the fix and committed some changes - switched to master and ran 'git pull' - now master is ahead of the branch by a number of commits - switched back to branch - ran 'git rebase master' to pull in changes from master and apply my changes on top of it - checked that history looks clean - 'git push -u origin newbranch' - submit pull request: but now github thinks my branch has a whole bunch of commits I didn't make (looks like the commits made by rebase). So my question is, what did I do wrong, and what's the right way to pull in the latest changes from upstream without messing up the history? T Let's say you're on your branch with your commits. You have a remote called dpl, which is upstream. So: $ git fetch dpl $ git pull --rebase dpl master $ git push originyour branch -f Note the -f, since you're overwriting remote history in your repo. [...] OK thanks! Another question. How to I repair my current history, which is all messed up now? That is, my branch has a whole bunch of commits I didn't make; how do I clean it up? Or is it easier to start from scratch? :) T Well, it really depends on how the history looks... How many commits do you have? If it's a small number, just branch off upstream and cherry-pick each commit. -- - Alex
Re: Confused about github rebasing
On Thu, 15 Mar 2012 13:49:14 -0700 H. S. Teoh hst...@quickfur.ath.cx wrote: Another question. How to I repair my current history, which is all messed up now? By not using DVCS which allows you to rewrite history (hint: check Fossil). ;) Otoh, I do not know how much you are 'in love' wiht git, but maybe it would be possible to use hg-git to collaborate with D @github. Sincerely, Gour -- There are principles to regulate attachment and aversion pertaining to the senses and their objects. One should not come under the control of such attachment and aversion, because they are stumbling blocks on the path of self-realization. http://atmarama.net | Hlapicina (Croatia) | GPG: 52B5C810 signature.asc Description: PGP signature
Re: Confused about github rebasing
On 15-03-2012 21:53, Gour wrote: On Thu, 15 Mar 2012 13:49:14 -0700 H. S. Teohhst...@quickfur.ath.cx wrote: Another question. How to I repair my current history, which is all messed up now? By not using DVCS which allows you to rewrite history (hint: check Fossil). ;) It's perfectly useful in DVCS. Without it, you'd have a mess of a history when you send your changes upstream. That's not really acceptable. Otoh, I do not know how much you are 'in love' wiht git, but maybe it would be possible to use hg-git to collaborate with D @github. Sincerely, Gour -- - Alex
Re: Confused about github rebasing
On 3/15/2012 3:56 PM, Alex Rønne Petersen wrote: On 15-03-2012 21:53, Gour wrote: On Thu, 15 Mar 2012 13:49:14 -0700 H. S. Teohhst...@quickfur.ath.cx wrote: Another question. How to I repair my current history, which is all messed up now? By not using DVCS which allows you to rewrite history (hint: check Fossil). ;) It's perfectly useful in DVCS. Without it, you'd have a mess of a history when you send your changes upstream. That's not really acceptable. Why would you delete history? Thats pretty much the primary purpose of source control.
Re: Confused about github rebasing
On Thursday, March 15, 2012 16:17:50 Sean Cavanaugh wrote: On 3/15/2012 3:56 PM, Alex Rønne Petersen wrote: On 15-03-2012 21:53, Gour wrote: On Thu, 15 Mar 2012 13:49:14 -0700 H. S. Teohhst...@quickfur.ath.cx wrote: Another question. How to I repair my current history, which is all messed up now? By not using DVCS which allows you to rewrite history (hint: check Fossil). ;) It's perfectly useful in DVCS. Without it, you'd have a mess of a history when you send your changes upstream. That's not really acceptable. Why would you delete history? Thats pretty much the primary purpose of source control. There's a difference between the history in the main repository and the history in a local branch. It may make a lot of sense to make a lot of small commits to your local branch. It's can be easier to manage and rollback small changes that way. But it gets to be pretty ugly if the main history has a whole ton of small commits. So, it's not all that uncommon to rebase at least sections of your local branch's history before merging it into the main repository. You don't lose any of the changes. You just don't have as many commits. And once it's in the main repository, you never rebase. - Jonathan M Davis
Re: Confused about github rebasing
On 15-03-2012 22:17, Sean Cavanaugh wrote: On 3/15/2012 3:56 PM, Alex Rønne Petersen wrote: On 15-03-2012 21:53, Gour wrote: On Thu, 15 Mar 2012 13:49:14 -0700 H. S. Teohhst...@quickfur.ath.cx wrote: Another question. How to I repair my current history, which is all messed up now? By not using DVCS which allows you to rewrite history (hint: check Fossil). ;) It's perfectly useful in DVCS. Without it, you'd have a mess of a history when you send your changes upstream. That's not really acceptable. Why would you delete history? Thats pretty much the primary purpose of source control. I didn't say delete history. Squashing commits together into one just simplifies the history. It makes it easier to review, easier to view in logs, easier to bisect, ... -- - Alex
Re: Confused about github rebasing
On Thu, Mar 15, 2012 at 09:51:30PM +0100, Alex Rønne Petersen wrote: On 15-03-2012 21:49, H. S. Teoh wrote: [...] Another question. How to I repair my current history, which is all messed up now? That is, my branch has a whole bunch of commits I didn't make; how do I clean it up? Or is it easier to start from scratch? :) T Well, it really depends on how the history looks... How many commits do you have? If it's a small number, just branch off upstream and cherry-pick each commit. [...] OK, so I finally figured out how to repair it. Actually, I discovered that my origin/master branch was also broken (probably due to running the wrong git command in it in the past), because it had a bunch of commits from upstream that for some reason had different hashes (maybe the result of attempting to merge from a messed up branch?). This is probably why my topic branch was messed up in the first place, I think. So I did git reset --hard to clean up the history back to the point where it first starting diverging, then pulled from upstream/master (which I confirmed were fast-forward). Then I used `git push -f master` to clean up the history on github. So that takes care of master. Then in my topic branch, which had a messed up history: (branchpoint)---(fast-forwards from upstream) -- master \ \---(merged)---(merged)---...---(my changes) -- topic I did a `git rebase --onto master (my changes)`: (branchpoint)---(fast-forwards from upstream) -- master \ \ \---(now unreachable commits) \--(my changes) -- topic Then I used git push -f to cleanup the history on github. So now everything looks OK again. Phew! I did discover an interesting thing about git though... at one point in the cleanup process I accidentally reset 1 more commit than I had intended, and that commit had no other references to it (unreachable). But luckily I still had its hash available, so `git merge hash` managed to restore it. I guess old unreachable commits are still kept until you run git gc. So that's one of the times when you *don't* want to run git gc. :-) T -- Laissez-faire is a French term commonly interpreted by Conservatives to mean 'lazy fairy,' which is the belief that if governments are lazy enough, the Good Fairy will come down from heaven and do all their work for them.
Re: Confused about github rebasing
On 15-03-2012 22:37, H. S. Teoh wrote: On Thu, Mar 15, 2012 at 09:51:30PM +0100, Alex Rønne Petersen wrote: On 15-03-2012 21:49, H. S. Teoh wrote: [...] Another question. How to I repair my current history, which is all messed up now? That is, my branch has a whole bunch of commits I didn't make; how do I clean it up? Or is it easier to start from scratch? :) T Well, it really depends on how the history looks... How many commits do you have? If it's a small number, just branch off upstream and cherry-pick each commit. [...] OK, so I finally figured out how to repair it. Actually, I discovered that my origin/master branch was also broken (probably due to running the wrong git command in it in the past), because it had a bunch of commits from upstream that for some reason had different hashes (maybe the result of attempting to merge from a messed up branch?). This is probably why my topic branch was messed up in the first place, I think. So I did git reset --hard to clean up the history back to the point where it first starting diverging, then pulled from upstream/master (which I confirmed were fast-forward). Then I used `git push -f master` to clean up the history on github. So that takes care of master. Then in my topic branch, which had a messed up history: (branchpoint)---(fast-forwards from upstream)-- master \ \---(merged)---(merged)---...---(my changes)-- topic I did a `git rebase --onto master (my changes)`: (branchpoint)---(fast-forwards from upstream)-- master \ \ \---(now unreachable commits) \--(my changes)-- topic Then I used git push -f to cleanup the history on github. So now everything looks OK again. Phew! I did discover an interesting thing about git though... at one point in the cleanup process I accidentally reset 1 more commit than I had intended, and that commit had no other references to it (unreachable). But luckily I still had its hash available, so `git mergehash` managed to restore it. I guess old unreachable commits are still kept until you run git gc. So that's one of the times when you *don't* want to run git gc. :-) T See also git reflog. It's a life-saver. -- - Alex
Re: Confused about github rebasing
On Thu, Mar 15, 2012 at 11:12:26PM +0100, Alex Rønne Petersen wrote: On 15-03-2012 22:37, H. S. Teoh wrote: [...] I did discover an interesting thing about git though... at one point in the cleanup process I accidentally reset 1 more commit than I had intended, and that commit had no other references to it (unreachable). But luckily I still had its hash available, so `git mergehash` managed to restore it. I guess old unreachable commits are still kept until you run git gc. So that's one of the times when you *don't* want to run git gc. :-) [...] See also git reflog. It's a life-saver. [...] Cool! Didn't know about that. Would've needed it if I didn't still have the hash to the orphaned commit. :) Thanks for the tip. T -- Democracy: The triumph of popularity over principle. -- C.Bond
Re: Confused about github rebasing
H. S. Teoh hst...@quickfur.ath.cx wrote in message news:mailman.719.1331847338.4860.digitalmars-d-le...@puremagic.com... Actually, I discovered that my origin/master branch was also broken (probably due to running the wrong git command in it in the past), because it had a bunch of commits from upstream that for some reason had different hashes (maybe the result of attempting to merge from a messed up branch?). This is probably why my topic branch was messed up in the first place, I think. So I did git reset --hard to clean up the history back to the point where it first starting diverging, then pulled from upstream/master (which I confirmed were fast-forward). Then I used `git push -f master` to clean up the history on github. So that takes care of master. I used to have this problem all the time - now I have a script which checks out master and pulls with -ff-only (in all three repositories) giving me a nice big error if I accidentally committed to master. Although I think I just lost it when my hard drive died yesterday... Get to know rebase -i as well, it can be very useful for untangling history.
Re: Confused about github rebasing
On Fri, Mar 16, 2012 at 01:43:52PM +1100, Daniel Murphy wrote: H. S. Teoh hst...@quickfur.ath.cx wrote in message news:mailman.719.1331847338.4860.digitalmars-d-le...@puremagic.com... Actually, I discovered that my origin/master branch was also broken (probably due to running the wrong git command in it in the past), because it had a bunch of commits from upstream that for some reason had different hashes (maybe the result of attempting to merge from a messed up branch?). This is probably why my topic branch was messed up in the first place, I think. [...] I used to have this problem all the time - now I have a script which checks out master and pulls with -ff-only (in all three repositories) giving me a nice big error if I accidentally committed to master. Although I think I just lost it when my hard drive died yesterday... Ahh, thanks for the tip. I'll probably always use -ff-only from now on. It's always such a mess to clean up if non-ff commits get merged in by a pull. Prevention is better than cure, as they say. Get to know rebase -i as well, it can be very useful for untangling history. [...] Yeah I tried that too, but in my case it was easier to just reset HEAD back to wherever it diverged from and rerun the pull. T -- Don't modify spaghetti code unless you can eat the consequences.
Re: Confused about github rebasing
On 16 March 2012 16:35, H. S. Teoh hst...@quickfur.ath.cx wrote: [...] I used to have this problem all the time - now I have a script which checks out master and pulls with -ff-only (in all three repositories) giving me a nice big error if I accidentally committed to master. Although I think I just lost it when my hard drive died yesterday... Ahh, thanks for the tip. I'll probably always use -ff-only from now on. It's always such a mess to clean up if non-ff commits get merged in by a pull. Prevention is better than cure, as they say. Get to know rebase -i as well, it can be very useful for untangling history. [...] Yeah I tried that too, but in my case it was easier to just reset HEAD back to wherever it diverged from and rerun the pull. Generally I find that pulls should be rebased, ff-only, and local merges done with --no-ff. This means that you have merge history in the tree, which can be useful when trying to do code archaeology, and pulls are forced to be merged properly, rather than using a merge commit, avoiding annoying messages in the log. Git is a strange beast, one moment it is peacful and helpful, the next it is scary and threatening to eat your files. Also, git-svn isn't actually that bad... -- James Miller
Re: Confused about github rebasing
On Fri, Mar 16, 2012 at 04:52:35PM +1300, James Miller wrote: [...] Generally I find that pulls should be rebased, ff-only, and local merges done with --no-ff. This means that you have merge history in the tree, which can be useful when trying to do code archaeology, and pulls are forced to be merged properly, rather than using a merge commit, avoiding annoying messages in the log. Why should merges be --no-ff? Doesn't that create a whole bunch of spurious commits in the history? Git is a strange beast, one moment it is peacful and helpful, the next it is scary and threatening to eat your files. [...] The way you worded it made me misread the last phrase as threatening to eat your face. :-P T -- Skill without imagination is craftsmanship and gives us many useful objects such as wickerwork picnic baskets. Imagination without skill gives us modern art. -- Tom Stoppard
Re: Confused about github rebasing
On 16 March 2012 17:09, H. S. Teoh hst...@quickfur.ath.cx wrote: Generally I find that pulls should be rebased, ff-only, and local merges done with --no-ff. This means that you have merge history in the tree, which can be useful when trying to do code archaeology, and pulls are forced to be merged properly, rather than using a merge commit, avoiding annoying messages in the log. Why should merges be --no-ff? Doesn't that create a whole bunch of spurious commits in the history? Not really, unless you do some really weird stuff. Its mostly due to not re-writing history, fast forwards essentially import your commits into the current branch, making it hard to track where work was done, since commits aren't aware of what branch they are in. I just find it keeps things a little more sensible and friendly for everyone else, since when pushing there is a specific commit + message that people can see, rather than a sudden block of new commits. Git is a strange beast, one moment it is peacful and helpful, the next it is scary and threatening to eat your files. [...] The way you worded it made me misread the last phrase as threatening to eat your face. :-P That too -- James Miller
