I am using git-svn and I would like to show the changes that were introduced by a certain SVN revision.
How to do that?
Manual way
Convert the revision number to a Git hash:
git svn find-rev r1234
Show a diff to the previous commit (replace thehash with the output from previous command):
git diff thehash^..thehash
Using git alias
You can get it all in one with this git alias.
Edit ~/.gitconfig (section [alias]), by adding the line
sdiff = "!f() { r=r"$(echo $1 | tr -d 'r')"; h="$(git svn find-rev $r)"; echo $r=${h}; git diff ${h}^..${h} ; } ; f ${1}"
Get the diff for a specific revision by using either of the following syntaxes:
git sdiff 1234
git sdiff r1234
Notice how the alias also prints the correspondence between revision number and hash. If you don't like that, remove the part echo $r=${h};
Related
I want to combine the git push command to one line, such as gitpush -m "fix bug #123" -f file1.html, file2.html ...
only file1.html and file2.html will commit and update to the server
how to make it?
try adding the following function to your .bashrc (or .bash_profile if Mac):
function allinone() {
for i in ${#:2}
do
git add $i
done
git commit -a -m "$1"
git push
}
Then you just can add, commit and push typing:
allinone "Adding, commiting and pushing 3 files at once" file1.html file2.html file3.html
The first parameter must be the comment, and the rest of the parameters are the files that you want to add, commit and push (notice that files are separated by spaces)
I hope this helps!
In Git - with it's immutable changeset objects and mutable refs - I know that the original commits remain, which gives me a warm fuzzy feeling after an 'oops' "history rewriting" moment.
For example, after a "history rewriting" git rebase the original changesets (cbe7698, 09c6268) are still there and a new changeset (08832c0) was added. I can easily restore/access the other changesets until such a time as they are pruned.
$ git log --oneline --graph --decorate $(git rev-list -g --all)
* 08832c0 (HEAD -> master) Added bar and quxx to foo.txt
| * cbe7698 Added quxx to foo.txt
| * 09c6268 Added bar to foo.txt
|/
* 895c9bb Added foo.txt
Likewise, even a git commit --amend preserves the original/amended commit (d58dabc) and adds a new changeset:
$ git log --oneline --graph --decorate $(git rev-list -g --all)
* d9bb795 (HEAD -> master) Added cats and dogs to pets.txt
| * d58dabc Added cats to pets.txt
|/
* 08832c0 Added pets.txt
However, what happens in Hg after a "history rewriting" operation?
Do the original commits cease to exist? And if they still do exist, how can they be accessed and/or recovered?
It depends on whether you have the evolve extension installed or not. If you have the evolve extension installed, the only command that will actually remove revisions from the repository is hg strip; other commands leave the original commits in place, but hide them. You can see them with hg log --hidden (or other commands with the --hidden flag). If you want to get rid of them permanently, hg strip --hidden -r 'extinct()' can be used [1].
Most people, however, will just be using base Mercurial. In this case (and for hg strip even with evolve), the removed changesets will be stored as bundles in .hg/strip-backup. A Mercurial bundle is basically a read-only overlay repository; you can use hg log -R, hg tip -R, hg incoming, hg pull, etc. on it. This is all you need in principle, but it can be a bit cumbersome typing out the paths.
For convenience, Facebook has published a number of experimental extensions for Mercurial. Among them, the backups extension provides a convenience command (hg backups) that basically lists the commits in each bundle in .hg/strip-backup (similar to what hg incoming with an appropriate template would do) and hg backups --recover to pull in the changesets from the stripped commits (similar to what hg pull would do).
[1] Note that even then, a backup will be stored in .hg/strip-backup. If you want to get rid of them really permanently, you will also have to remove that backup.
I am using bookmarks in mercurial to emulate a git branches-like workflow.
One thing I'm finding is that whenever I push, I invariably want to push just the current bookmark. Rather than typing
hg push -B <bookmark_name>
all the time, I'd like to alias hg push to just push the current bookmark. To do that, I need a way of referring to the current bookmark without mentioning its name. Is there a way to do that?
I understand it was asked two years ago, but I found this page in Google and none of the answers helped. So here's what did the trick for me (Linux):
[alias]
currentbranch = !cd `$HG root` && cat .hg/bookmarks.current
pushb = !$HG push -B `$HG currentbranch`
cd is required for this to work from non-root directories.
Current bookmark name stored in .hg/bookmarks.current file of your repository. As an alias you can use something like this:
pushb = push -B `cat .hg/bookmarks.current`
Also note that when you update you repository state to any other revision, there won't be file .hg/bookmarks.current.
OK, platform independent solution, somehow ugly
pushb = push -B `hg log --template "{bookmarks}\n" -r "bookmark() & ."`
or, with nested command in more natural way it must be: hg parents --template="{bookmarks}\n"
Ugly because pure Mercurial-way using nested shell-aliases in hgrc
[alias]
cb = !$HG log --template "{bookmarks}\n" -r "bookmark() & ."
pushb = push -B cb
does not work for me
>hg pushb
...
bookmark cb does not exist on the local or remote repository!
Edit
Long time later, with new solution. According to hg help push
If -B/--bookmark is used, the specified bookmarked revision, its
ancestors, and the bookmark will be pushed to the remote repository.
Specifying "." is equivalent to specifying the active bookmark's name.
if order to "push the current bookmark" you can use just
hg push -B .
This works for me (and handles bookmarks with spaces):
alias pushb="hg push -B \"\$(hg bookmarks 2> /dev/null | awk '/\*/ { \$1=\"\"; \$NF=\"\"; printf }' | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')\""
You can use a shell call substitution:
hg push -B `hg bookmark --active`
This can be put into an alias (see alias section of hg help config)
I'm doing a pull origin some_branch and can see there are a lot of changes. Eventually I don't mind if their erase all mine.
How can I accept them all instead or using mergetool and merge files one by one?
Just:
git clone $url
Seriously! That's the best way.
You could do all sorts of git reset and git branch commands to move the refs, but the only purpose would be to keep your commits somewhere in your local repository for future reference. If that's the goal, just keep the whole repository as is, and re-clone the origin.
To accept all changes on just one branch, foo:
git checkout foo
git fetch origin +refs/heads/foo:refs/remotes/origin/foo
git reset refs/remotes/origin/foo
foo will now point at the same commit as foo on origin. If you want to blow away the files in your working directory, add --hard to git reset. If you want to merge first, replace fetch with pull.
You may have a bunch of dangling commits in your local repo, which git may clean-up someday, but for awhile you can still access them via the reflog.
Or:
git status | grep "both " | cut -f2 | cut -f11 -d" " | xargs git checkout --theirs
git status | grep "both " | cut -f2 | cut -f11 -d" " | xargs git add
which forces accepting all conflicting remote files.
Here's the approach I used, which seems to be OK. I have a branch called "theirs" which contains the new version of everything in the remote. A version named "ours" is my work based on a long-ago version of theirs, which too many irrelevant changes but many additions (new subdirectories of sites/all) that I want to keep.
git checkout ours
git checkout theirs -- *.php *.txt *.config modules themes includes scripts
git commit -m "New version with all new key files from 'theirs'"
As long as I got the list of files and directories in the second checkout correct, this should be fine.
If I wanted the history to be based on the "theirs" branch I might want to do this the other way round.
This question already has answers here:
Mercurial: how to amend the last commit?
(8 answers)
Closed 5 years ago.
I am currently using TortoiseHg (Mercurial) and accidentally committed an incorrect commit message. How do I go about editing this commit message in the repository?
Update: Mercurial has added --amend which should be the preferred option now.
You can rollback the last commit (but only the last one) with hg rollback and then reapply it.
Important: this permanently removes the latest commit (or pull). So if you've done a hg update that commit is no longer in your working directory then it's gone forever. So make a copy first.
Other than that, you cannot change the repository's history (including commit messages), because everything in there is check-summed. The only thing you could do is prune the history after a given changeset, and then recreate it accordingly.
None of this will work if you have already published your changes (unless you can get hold of all copies), and you also cannot "rewrite history" that include GPG-signed commits (by other people).
Well, I used to do this way:
Imagine, you have 500 commits, and your erroneous commit message is in r.498.
hg qimport -r 498:tip
hg qpop -a
joe .hg/patches/498.diff
(change the comment, after the mercurial header)
hg qpush -a
hg qdelete -r qbase:qtip
Good news: hg 2.2 just added git like --amend option.
and in tortoiseHg, you can use "Amend current revision" by select black arrow on the right of commit button
I know this is an old post and you marked the question as answered. I was looking for the same thing recently and I found the histedit extension very useful. The process is explained here:
http://knowledgestockpile.blogspot.com/2010/12/changing-commit-message-of-revision-in.html
Last operation was the commit in question
To change the commit message of the last commit when the last mercurial operation was a commit you can use
$ hg rollback
to roll back the last commit and re-commit it with the new message:
$ hg ci -m 'new message'
But be careful because the rollback command also rolls back following operations:
import
pull
push (with this repository as the destination)
unbundle
(see hg help rollback)
Thus, if you are not sure if the last mercurial command was a hg ci, don't use hg rollback.
Change any other commit message
You can use the mq extension, which is distributed with Mercurial, to change the commit message of any commit.
This approach is only useful when there aren't already cloned repositories in the public that contain the changeset you want to rename because doing so alters the changeset hash of it and all following changesets.
That means that you have to be able to remove all existing clones that include the changeset you want to rename, or else pushing/pulling between them wouldn't work.
To use the mq extension you have to explicitly enable it, e.g. under UNIX check your ~/.hgrc, which should contain following lines:
[extensions]
mq=
Say that you want to change revision X - first qimport imports revisions X and following. Now they are registered as a stack of applied patches. Popping (qpop) the complete stack except X makes X available for changes via qrefresh. After the commit message is changed you have to push all patches again (qpop) to re-apply them, i.e. to recreate the following revisions. The stack of patches isn't needed any, thus it can be removed via qfinish.
Following demo script shows all operations in action. In the example the commit message of third changeset is renamed.
# test.sh
cd $(dirname $0)
set -x -e -u
echo INFO: Delete old stuff
rm -rf .hg `seq 5`
echo INFO: Setup repository with 5 revisions
hg init
echo '[ui]' > .hg/hgrc
echo 'username=Joe User <juser#example.org>' >> .hg/hgrc
echo 'style = compact' >> .hg/hgrc
echo '[extensions]' >> .hg/hgrc
echo 'mq=' >> .hg/hgrc
for i in `seq 5`; do
touch $i && hg add $i && hg ci -m "changeset message $i" $i
done
hg log
echo INFO: Need to rename the commit message on the 3rd revision
echo INFO: Displays all patches
hg qseries
echo INFO: Import all revisions including the 3rd to the last one as patches
hg qimport -r $(hg identify -n -r 'children(2)'):tip
hg qseries
echo INFO: Pop patches
hg qpop -a
hg qseries
hg log
hg parent
hg commit --amend -m 'CHANGED MESSAGE'
hg log
echo INFO: Push all remaining patches
hg qpush -a
hg log
hg qseries
echo INFO: Remove all patches
hg qfinish -a
hg qseries && hg log && hg parent
Copy it to an empty directory an execute it e.g. via:
$ bash test.sh 2>&1 | tee log
The output should include the original changeset message:
+ hg log
[..]
2 53bc13f21b04 2011-08-31 17:26 +0200 juser
changeset message 3
And the rename operation the changed message:
+ hg log
[..]
2 3ff8a832d057 2011-08-31 17:26 +0200 juser
CHANGED MESSAGE
(Tested with Mercurial 4.5.2)
In TortoiseHg, right-click on the revision you want to modify. Choose Modify History->Import MQ. That will convert all the revisions up to and including the selected revision from Mercurial changesets into Mercurial Queue patches. Select the Patch you want to modify the message for, and it should automatically change the screen to the MQ editor. Edit the message which is in the middle of the screen, then click QRefresh. Finally, right click on the patch and choose Modify History->Finish Patch, which will convert it from a patch back into a change set.
Oh, this assumes that MQ is an active extension for TortoiseHG on this repository. If not, you should be able to click File->Settings, click Extensions, and click the mq checkbox. It should warn you that you have to close TortoiseHg before the extension is active, so close and reopen.
EDIT: As pointed out by users, don't use MQ, use commit --amend. This answer is mostly of historic interest now.
As others have mentioned the MQ extension is much more suited for this task, and you don't run the risk of destroying your work. To do this:
Enable the MQ extension, by adding something like this to your hgrc:
[extensions]
mq =
Update to the changeset you want to edit, typically tip:
hg up $rev
Import the current changeset into the queue:
hg qimport -r .
Refresh the patch, and edit the commit message:
hg qrefresh -e
Finish all applied patches (one, in this case) and store them as regular changesets:
hg qfinish -a
I'm not familiar with TortoiseHg, but the commands should be similar to those above. I also believe it's worth mentioning that editing history is risky; you should only do it if you're absolutely certain that the changeset hasn't been pushed to or pulled from anywhere else.
Rollback-and-reapply is realy simple solution, but it can help only with the last commit. Mercurial Queues is much more powerful thing (note that you need to enable Mercurial Queues Extension in order to use "hg q*" commands).
I did it this way. Firstly, don't push your changes or you are out of luck. Grab and install the collapse extension. Commit another dummy changeset. Then use collapse to combine the previous two changesets into one. It will prompt you for a new commit message, giving you the messages that you already have as a starting point. You have effectively changed your original commit message.
One hack i use if the revision i want to edit is not so old:
Let's say you're at rev 500 and you want to edit 497.
hg export -o rev497 497
hg export -o rev498 498
hg export -o rev499 499
hg export -o rev500 500
Edit rev497 file and change the message. (It's after first lines preceded by "#")
hg import rev497
hg import rev498
hg import rev499
hg import rev500
There is another approach with the MQ extension and the debug commands. This is a general way to modify history without losing data. Let me assume the same situation as Antonio.
// set current tip to rev 497
hg debugsetparents 497
hg debugrebuildstate
// hg add/remove if needed
hg commit
hg strip [-n] 498
A little gem in the discussion above - thanks to #Codest and #Kevin Pullin.
In TortoiseHg, there's a dropdown option adjacent to the commit button. Selecting "Amend current revision" brings back the comment and the list of files. SO useful.