git-commit-vandalism/Documentation/config/branch.txt

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branch.autoSetupMerge::
Tells 'git branch', 'git switch' and 'git checkout' to set up new branches
so that linkgit:git-pull[1] will appropriately merge from the
starting point branch. Note that even if this option is not set,
this behavior can be chosen per-branch using the `--track`
and `--no-track` options. The valid settings are: `false` -- no
automatic setup is done; `true` -- automatic setup is done when the
starting point is a remote-tracking branch; `always` --
automatic setup is done when the starting point is either a
local branch or remote-tracking branch; `inherit` -- if the starting point
has a tracking configuration, it is copied to the new
branch: new autosetupmerge option 'simple' for matching branches With the default push.default option, "simple", beginners are protected from accidentally pushing to the "wrong" branch in centralized workflows: if the remote tracking branch they would push to does not have the same name as the local branch, and they try to do a "default push", they get an error and explanation with options. There is a particular centralized workflow where this often happens: a user branches to a new local topic branch from an existing remote branch, eg with "checkout -b feature1 origin/master". With the default branch.autosetupmerge configuration (value "true"), git will automatically add origin/master as the upstream tracking branch. When the user pushes with a default "git push", with the intention of pushing their (new) topic branch to the remote, they get an error, and (amongst other things) a suggestion to run "git push origin HEAD". If they follow this suggestion the push succeeds, but on subsequent default pushes they continue to get an error - so eventually they figure out to add "-u" to change the tracking branch, or they spelunk the push.default config doc as proposed and set it to "current", or some GUI tooling does one or the other of these things for them. When one of their coworkers later works on the same topic branch, they don't get any of that "weirdness". They just "git checkout feature1" and everything works exactly as they expect, with the shared remote branch set up as remote tracking branch, and push and pull working out of the box. The "stable state" for this way of working is that local branches have the same-name remote tracking branch (origin/feature1 in this example), and multiple people can work on that remote feature branch at the same time, trusting "git pull" to merge or rebase as required for them to be able to push their interim changes to that same feature branch on that same remote. (merging from the upstream "master" branch, and merging back to it, are separate more involved processes in this flow). There is a problem in this flow/way of working, however, which is that the first user, when they first branched from origin/master, ended up with the "wrong" remote tracking branch (different from the stable state). For a while, before they pushed (and maybe longer, if they don't use -u/--set-upstream), their "git pull" wasn't getting other users' changes to the feature branch - it was getting any changes from the remote "master" branch instead (a completely different class of changes!) An experienced git user might say "well yeah, that's what it means to have the remote tracking branch set to origin/master!" - but the original user above didn't *ask* to have the remote master branch added as remote tracking branch - that just happened automatically when they branched their feature branch. They didn't necessarily even notice or understand the meaning of the "set up to track 'origin/master'" message when they created the branch - especially if they are using a GUI. Looking at how to fix this, you might think "OK, so disable auto setup of remote tracking - set branch.autosetupmerge to false" - but that will inconvenience the *second* user in this story - the one who just wanted to start working on the topic branch. The first and second users swap roles at different points in time of course - they should both have a sane configuration that does the right thing in both situations. Make this "branches have the same name locally as on the remote" workflow less painful / more obvious by introducing a new branch.autosetupmerge option called "simple", to match the same-name "push.default" option that makes similar assumptions. This new option automatically sets up tracking in a *subset* of the current default situations: when the original ref is a remote tracking branch *and* has the same branch name on the remote (as the new local branch name). Update the error displayed when the 'push.default=simple' configuration rejects a mismatching-upstream-name default push, to offer this new branch.autosetupmerge option that will prevent this class of error. With this new configuration, in the example situation above, the first user does *not* get origin/master set up as the tracking branch for the new local branch. If they "git pull" in their new local-only branch, they get an error explaining there is no upstream branch - which makes sense and is helpful. If they "git push", they get an error explaining how to push *and* suggesting they specify --set-upstream - which is exactly the right thing to do for them. This new option is likely not appropriate for users intentionally implementing a "triangular workflow" with a shared upstream tracking branch, that they "git pull" in and a "private" feature branch that they push/force-push to just for remote safe-keeping until they are ready to push up to the shared branch explicitly/separately. Such users are likely to prefer keeping the current default merge.autosetupmerge=true behavior, and change their push.default to "current". Also extend the existing branch tests with three new cases testing this option - the obvious matching-name and non-matching-name cases, and also a non-matching-ref-type case. The matching-name case needs to temporarily create an independent repo to fetch from, as the general strategy of using the local repo as the remote in these tests precludes locally branching with the same name as in the "remote". Signed-off-by: Tao Klerks <tao@klerks.biz> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-29 11:56:44 +02:00
branch; `simple` -- automatic setup is done only when the starting point
is a remote-tracking branch and the new branch has the same name as the
remote branch. This option defaults to true.
branch.autoSetupRebase::
When a new branch is created with 'git branch', 'git switch' or 'git checkout'
that tracks another branch, this variable tells Git to set
up pull to rebase instead of merge (see "branch.<name>.rebase").
When `never`, rebase is never automatically set to true.
When `local`, rebase is set to true for tracked branches of
other local branches.
When `remote`, rebase is set to true for tracked branches of
remote-tracking branches.
When `always`, rebase will be set to true for all tracking
branches.
See "branch.autoSetupMerge" for details on how to set up a
branch to track another branch.
This option defaults to never.
branch.sort::
This variable controls the sort ordering of branches when displayed by
linkgit:git-branch[1]. Without the "--sort=<value>" option provided, the
value of this variable will be used as the default.
See linkgit:git-for-each-ref[1] field names for valid values.
branch.<name>.remote::
When on branch <name>, it tells 'git fetch' and 'git push'
which remote to fetch from/push to. The remote to push to
may be overridden with `remote.pushDefault` (for all branches).
The remote to push to, for the current branch, may be further
overridden by `branch.<name>.pushRemote`. If no remote is
configured, or if you are not on any branch and there is more than
one remote defined in the repository, it defaults to `origin` for
fetching and `remote.pushDefault` for pushing.
Additionally, `.` (a period) is the current local repository
(a dot-repository), see `branch.<name>.merge`'s final note below.
branch.<name>.pushRemote::
When on branch <name>, it overrides `branch.<name>.remote` for
pushing. It also overrides `remote.pushDefault` for pushing
from branch <name>. When you pull from one place (e.g. your
upstream) and push to another place (e.g. your own publishing
repository), you would want to set `remote.pushDefault` to
specify the remote to push to for all branches, and use this
option to override it for a specific branch.
branch.<name>.merge::
Defines, together with branch.<name>.remote, the upstream branch
for the given branch. It tells 'git fetch'/'git pull'/'git rebase' which
branch to merge and can also affect 'git push' (see push.default).
When in branch <name>, it tells 'git fetch' the default
refspec to be marked for merging in FETCH_HEAD. The value is
handled like the remote part of a refspec, and must match a
ref which is fetched from the remote given by
"branch.<name>.remote".
The merge information is used by 'git pull' (which at first calls
'git fetch') to lookup the default branch for merging. Without
this option, 'git pull' defaults to merge the first refspec fetched.
Specify multiple values to get an octopus merge.
If you wish to setup 'git pull' so that it merges into <name> from
another branch in the local repository, you can point
branch.<name>.merge to the desired branch, and use the relative path
setting `.` (a period) for branch.<name>.remote.
branch.<name>.mergeOptions::
Sets default options for merging into branch <name>. The syntax and
supported options are the same as those of linkgit:git-merge[1], but
option values containing whitespace characters are currently not
supported.
branch.<name>.rebase::
When true, rebase the branch <name> on top of the fetched branch,
instead of merging the default branch from the default remote when
"git pull" is run. See "pull.rebase" for doing this in a non
branch-specific manner.
+
When `merges` (or just 'm'), pass the `--rebase-merges` option to 'git rebase'
so that the local merge commits are included in the rebase (see
linkgit:git-rebase[1] for details).
+
When the value is `interactive` (or just 'i'), the rebase is run in interactive
mode.
+
*NOTE*: this is a possibly dangerous operation; do *not* use
it unless you understand the implications (see linkgit:git-rebase[1]
for details).
branch.<name>.description::
Branch description, can be edited with
`git branch --edit-description`. Branch description is
automatically added in the format-patch cover letter or
request-pull summary.