Does mercurial support having an alias for the default branch? - mercurial

Is there a way in mercurial to give an alternate name to the default branch while still having default work as before? I.e., Can I set things up so that either hg update main or hg update default will bring me to the default branch?

You could hand a bookmark named 'main' on the default branch like:
hg bookmark --rev default main
That bookmark will start out on the "most tipward" changeset on the default branch. And the bookmark will follow that along when you commit (including committing merges).
In general though try to keep using the name 'default' for your active development work.

Related

See only commits from a particular branch

So, i made some work on the default branch, then i pushed those changes to my fork and after that i created a pull request from the fork to the parent repo (default branch at fork -> default branch at parent).
After this i created a new branch, made some changes, pushed them and again created a pull request from new branch on fork to new branch on parent.
In this pull request (new branch -> new branch) a see commits that are made in default->default pull request. But i expected to see only commits that i made in the new branch.
So, i want to see commits that i made to default in pull request to default and commits to new branch in the pull request made to this new branch. How do i make it?
I apologize for my awfull english. I tried my best to explain myself.
You can try something like this:
hg log -r 'ancestor(default,pull_request_default)::pull_request_default'
replacing pull_request_default with the last revision of your pull request. It will only show the changesets of the pull request.

Moving unstaged + uncommitted changes between Mercurial branches

I cloned a Mercurial repo and did a bunch of local work, and forgot to make a feature branch for said work.
The normal flow is:
Clone
Create a branch
Switch to that branch
Do your work in that branch
Push that branch
Code review
If code review passes, merge branch w/ default (locally)
Push merged changes to default
Close the feature branch
So I need to create a new branch, port all my unstaged/uncommitted code changes (made to default) over to this branch (so that default is now clean and the new branch contains my changes), and then push my feature branch.
I created the new branch via hg branch new_feature. But after pouring over the Merucrial docs, I can't figure out the next step.
So I ask: How do I move (not just copy) all my unstaged/uncommitted changes from default to my new_feature branch)?
You shouldn't have to do anything in particular.
Your uncommitted working folder changes are fluid, and you can set the branch name before you commit, without losing your changes.
If you're on the command line, simply do this:
hg branch feature-X
hg commit -m "Added feature X"
If you're using TortoiseHg simply click the "Branch: default" button just above the commit message input field and select "Open a new named branch" and give it a name, then click OK, then commit as normal.
Setting the branch name to use during commit does not in fact change your working folder, it doesn't do an update, it doesn't do anything, except record in metadata what the branch name is supposed to be.
Also note that this will only allow you to create a new branch to commit to. If you want to continue on an existing branch you first need to update to the head of that branch and this may cause changes to your working folder. You should not need to do this, however, if you want to create a new branch.

Mercurial will not let me push. Abort: push creates new remote head

I can't push using mercurial, it states I have to merge. If I do hg merge, will it merge my branch with the main trunk, I really want to avoid that.
I created and modified some files. I did hg add to add them all. I did some commits but it won't let me push them to my branch.
I posted my output of hg commands below:
C:\Users\kacalica\Desktop\Projects\hydroinformatics>hg incoming
comparing with https://stcalica#bitbucket.org/nickrsan/hydroinformatics
searching for changes
no changes found
C:\Users\kacalica\Desktop\Projects\hydroinformatics>hg status
M hydro\forms.py
? graph_test.py
? hydro\mlgraph\__init__.py
? hydro\mlgraph\test.py
? hydro\plugins\__init__.py.orig
? hydro\urls.py.orig
? hydro\views.py.orig
? public\Hydroinformatics\media\test.txt
? public\Hydroinformatics\media\test_EPALM1I.txt
? public\Hydroinformatics\media\test_OIWsXcC.txt
? public\Hydroinformatics\media\test_v5s6RmF.txt
C:\Users\kacalica\Desktop\Projects\hydroinformatics>hg add
adding graph_test.py
adding hydro\mlgraph\__init__.py
adding hydro\mlgraph\test.py
adding hydro\plugins\__init__.py.orig
adding hydro\urls.py.orig
adding hydro\views.py.orig
adding public\Hydroinformatics\media\test.txt
adding public\Hydroinformatics\media\test_EPALM1I.txt
adding public\Hydroinformatics\media\test_OIWsXcC.txt
adding public\Hydroinformatics\media\test_v5s6RmF.txt
C:\Users\kacalica\Desktop\Projects\hydroinformatics>hg push
pushing to https://stcalica#bitbucket.org/nickrsan/hydroinformatics
searching for changes
abort: push creates new remote head b54ae56acf07 on branch 'WITHOUTPLUGINSGRAPHS'!
(merge or see "hg help push" for details about pushing new heads)
C:\Users\kacalica\Desktop\Projects\hydroinformatics>hg commit -m "added files"
abort: last update was interrupted
(use 'hg update' to get a consistent checkout)
C:\Users\kacalica\Desktop\Projects\hydroinformatics>hg update
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
C:\Users\kacalica\Desktop\Projects\hydroinformatics>hg branch
WITHOUTPLUGINSGRAPHS
C:\Users\kacalica\Desktop\Projects\hydroinformatics>hg status
M hydro\forms.py
A graph_test.py
A hydro\mlgraph\__init__.py
A hydro\mlgraph\test.py
A hydro\plugins\__init__.py.orig
A hydro\urls.py.orig
A hydro\views.py.orig
A public\Hydroinformatics\media\test.txt
A public\Hydroinformatics\media\test_EPALM1I.txt
A public\Hydroinformatics\media\test_OIWsXcC.txt
A public\Hydroinformatics\media\test_v5s6RmF.txt
C:\Users\kacalica\Desktop\Projects\hydroinformatics>hg summary
parent: 36:b54ae56acf07 tip
actually added template
branch: WITHOUTPLUGINSGRAPHS
commit: 1 modified, 10 added
update: 10 new changesets, 2 branch heads (merge)
C:\Users\kacalica\Desktop\Projects\hydroinformatics>
OK, first of all, let's sort out our terminology here. In Mercurial, a "head" is a changeset with no child changesets (https://www.mercurial-scm.org/wiki/Head). Let's say you're working in default branch. If you're being told that pushing would create new remote heads, it means there's a different head revision in default on the remote repository (the one you're pushing to). If you pushed, default would have two head revisions!
How does this happen? Well, it might be another developer did a push in the meantime, or you pushed from another repository/computer by mistake. You don't want to push a branch with multiple heads, otherwise you end up with some crazy hydra with loads of heads, none of which has all the code.
First you need to pull from the remote repository. Next, you need to run "hg merge" - if you're using Hg-Workbench or similar, you might not see the other head immediately, so scroll down and find it. If you have conflicts, now's the time to resolve them. Make sure you commit your merge, and then you should be able to push.
If you're on a verison of Mercurial that's not more than a couple year's old do: hg push --new-branch which the hg help push shows lets you push a new branch:
--new-branch allow pushing a new branch
That'll only be necessary the first time you push a new branch -- it's just there to make sure you don't accidentally push something you didn't mean to share.

Detect creating of branches or bookmarks in HG

Is it possible to detect if a commit creates a new bookmark or branch via hooks in .hgrc?
I've tried to see if I can find out using hg log, but it just shows on what branch/bookmark the commit has been created: http://hgbook.red-bean.com/read/customizing-the-output-of-mercurial.html
There don't seem to be hooks for it: http://hgbook.red-bean.com/read/handling-repository-events-with-hooks.html
It would make sense I suppose that there isn't a hook for it, because it is also not possible to make a commit which is 'just' the creation of the branch indicating branches/bookmarks only exists when added to a specific commit.
I figured I could check hg branches and hg bookmarks before and after each commit and determine which are removed and added, but is there a cleaner way for detecting branch/bookmark adds/removes?
The pushkey and prepushkey hooks can detect the addition, deletion, and moves of bookmarks.
In hgrc:
[hooks]
prepushkey=echo %HG_NAMESPACE% %HG_KEY% %HG_OLD% %HG_NEW%\n >> out.txt
HG_NAMESPACE will contain "bookmark" and HG_KEY will contain the name of the bookmark.
HG_OLD will contain the hash of the commit the bookmark was before the operation. It won't be set if the bookmark is being created.
HG_NEW will contain the hash of the commit the bookmark will be after the operation. It won't be set if the bookmark is being deleted.
Bookmarks
Bookmarks-handling does not require commit
Bookmark can be created|modified for any changeset in history, not only for current
Bookmark(s) can appear as result of data-exchange (pull|push), not local user's actions
Only part of all possible cases can be covered by hook
Branches
Changing branch always reflected in commit
Branch in changeset may differ from parent's branch not only as result of hg branch (see "merge branches" and "mergesets") - and I haven't nice and easy and ready to use solution for this case
Common notes
You can use standard precommit hook (executed before commit and can enable|disable commit) for testing different conditions in commit or or pretxncommit
Mercurial template-engine has keywords for branch and bookmark for using in hg log -T
In pretxncommit hook commit already exist, but not finalized - it means you can manipulate with commit's data using -r tip and tip's parent in any Mercurial command
Dirty skeleton for hook's body
hg log -T "{KEYWORD}\n" -r "tip + tip^" | ....
where KEYWORD may be branch or bookmarks. Result of log is two-strings output, which can be identical of different (not sure for bookmark, TBT!!), which you have to compare (as you want and can)
PS: Idea inspired by EnsureCommitPolicy Wiki and Mercurial pre commit hook topic here

How to get update from mercurial branch in teamcity

I want to use a particular branch in order to deploy. I am using teamcity to set up a VCS Settings.
My current repository directory structure is as follows:-
My default dir:- http://hg.test.co.uk/mainbranch
branches - ver-11.6
- ver-11.5
Now in VCS Settings teamcity I am setting it as follows:-
Pull changes from: https://hg.test.co.uk/mainbranch
default branch :
Branch Specification: +:/branches/ver-11.6
When I run it from teramcity it always update from default. I want it to update from branch ver11.6. Please guide what I am doing wrong here.
You don't need to type /branches/. Use raw branch name. Correct branch specification is +:ver-11.6 for branch ver-11.6.