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Added a few examples to git-pull man page.
Clarified and added notes for pull/push refspecs. Converted to back-ticks for literal text examples. [jc: Also fixed git-pull description that still talked about its calling git-resolve or git-octopus (we do not anymore; instead we just call git-merge). BTW, I am reasonably impressed by how well "git-am -3" applied this patch, which had some conflicts because I've updated the documentation somewhat.] Signed-off-by: Jon Loeliger <jdl@freescale.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Jon Loeliger
Junio C Hamano
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bccf5956c3
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@ -13,13 +13,10 @@ SYNOPSIS
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DESCRIPTION
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-----------
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Runs 'git-fetch' with the given parameters.
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Runs `git-fetch` with the given parameters, and calls `git-merge`
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to merge the retrieved head(s) into the current branch.
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When only one ref is downloaded, runs 'git resolve' to merge it
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into the local HEAD. Otherwise uses 'git octopus' to merge them
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into the local HEAD.
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Note that you can use '.' (current directory) as the
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Note that you can use `.` (current directory) as the
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<repository> to pull from the local repository -- this is useful
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when merging local branches into the current branch.
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@ -29,8 +26,8 @@ include::pull-fetch-param.txt[]
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-a, \--append::
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Append ref names and object names of fetched refs to the
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existing contents of $GIT_DIR/FETCH_HEAD. Without this
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option old data in $GIT_DIR/FETCH_HEAD will be overwritten.
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existing contents of `$GIT_DIR/FETCH_HEAD`. Without this
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option old data in `$GIT_DIR/FETCH_HEAD` will be overwritten.
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include::merge-pull-opts.txt[]
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@ -97,6 +94,52 @@ You should refrain from abusing this option to sneak substantial
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changes into a merge commit. Small fixups like bumping
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release/version name would be acceptable.
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Command line pull of multiple branches from one repository::
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+
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------------------------------------------------
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$ cat .git/remotes/origin
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URL: git://git.kernel.org/pub/scm/git/git.git
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Pull: master:origin
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$ git checkout master
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$ git fetch origin master:origin +pu:pu maint:maint
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$ git pull . origin
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------------------------------------------------
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+
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Here, a typical `$GIT_DIR/remotes/origin` file from a
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`git-clone` operation is used in combination with
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command line options to `git-fetch` to first update
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multiple branches of the local repository and then
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to merge the remote `origin` branch into the local
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`master` branch. The local `pu` branch is updated
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even if it does not result in a fast forward update.
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Here, the pull can obtain its objects from the local
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repository using `.`, as the previous `git-fetch` is
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known to have already obtained and made available
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all the necessary objects.
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Pull of multiple branches from one repository using `$GIT_DIR/remotes` file::
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+
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------------------------------------------------
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$ cat .git/remotes/origin
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URL: git://git.kernel.org/pub/scm/git/git.git
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Pull: master:origin
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Pull: +pu:pu
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Pull: maint:maint
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$ git checkout master
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$ git pull origin
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------------------------------------------------
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+
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Here, a typical `$GIT_DIR/remotes/origin` file from a
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`git-clone` operation has been hand-modified to include
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the branch-mapping of additional remote and local
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heads directly. A single `git-pull` operation while
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in the `master` branch will fetch multiple heads and
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merge the remote `origin` head into the current,
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local `master` branch.
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Author
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------
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@ -105,7 +148,9 @@ and Junio C Hamano <junkio@cox.net>
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Documentation
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--------------
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Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
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Documentation by Jon Loeliger,
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David Greaves,
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Junio C Hamano and the git-list <git@vger.kernel.org>.
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GIT
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---
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@ -1,7 +1,8 @@
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<repository>::
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The "remote" repository to pull from. One of the
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following notations can be used to name the repository
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to pull from:
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The "remote" repository that is the source of a fetch
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or pull operation, or the destination of a push operation.
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One of the following notations can be used
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to name the remote repository:
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+
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===============================================================
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- Rsync URL: rsync://remote.machine/path/to/repo.git/
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@ -12,7 +13,7 @@
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===============================================================
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+
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In addition to the above, as a short-hand, the name of a
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file in $GIT_DIR/remotes directory can be given; the
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file in `$GIT_DIR/remotes` directory can be given; the
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named file should be in the following format:
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+
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URL: one of the above URL format
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@ -21,57 +22,82 @@ named file should be in the following format:
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+
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When such a short-hand is specified in place of
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<repository> without <refspec> parameters on the command
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line, <refspec>... specified on Push lines or Pull lines
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are used for "git push" and "git fetch/pull",
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respectively.
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line, <refspec>... specified on `Push:` lines or `Pull:`
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lines are used for `git-push` and `git-fetch`/`git-pull`,
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respectively. Multiple `Push:` and and `Pull:` lines may
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be specified for additional branch mappings.
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+
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The name of a file in $GIT_DIR/branches directory can be
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The name of a file in `$GIT_DIR/branches` directory can be
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specified as an older notation short-hand; the named
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file should contain a single line, a URL in one of the
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above formats, optionally followed by a hash '#' and the
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above formats, optionally followed by a hash `#` and the
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name of remote head (URL fragment notation).
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$GIT_DIR/branches/<remote> file that stores a <url>
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`$GIT_DIR/branches/<remote>` file that stores a <url>
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without the fragment is equivalent to have this in the
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corresponding file in the $GIT_DIR/remotes/ directory
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corresponding file in the `$GIT_DIR/remotes/` directory.
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+
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URL: <url>
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Pull: refs/heads/master:<remote>
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+
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while having <url>#<head> is equivalent to
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while having `<url>#<head>` is equivalent to
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+
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URL: <url>
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Pull: refs/heads/<head>:<remote>
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<refspec>::
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The canonical format of a <refspec> parameter is
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'+?<src>:<dst>'; that is, an optional plus '+', followed
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by the source ref, followed by a colon ':', followed by
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`+?<src>:<dst>`; that is, an optional plus `+`, followed
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by the source ref, followed by a colon `:`, followed by
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the destination ref.
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+
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When used in "git push", the <src> side can be an
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When used in `git-push`, the <src> side can be an
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arbitrary "SHA1 expression" that can be used as an
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argument to "git-cat-file -t". E.g. "master~4" (push
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argument to `git-cat-file -t`. E.g. `master~4` (push
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four parents before the current master head).
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+
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For "git push", the local ref that matches <src> is used
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For `git-push`, the local ref that matches <src> is used
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to fast forward the remote ref that matches <dst>. If
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the optional plus '+' is used, the remote ref is updated
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the optional plus `+` is used, the remote ref is updated
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even if it does not result in a fast forward update.
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+
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For "git fetch/pull", the remote ref that matches <src>
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For `git-fetch` and `git-pull`, the remote ref that matches <src>
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is fetched, and if <dst> is not empty string, the local
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ref that matches it is fast forwarded using <src>.
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Again, if the optional plus '+' is used, the local ref
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Again, if the optional plus `+` is used, the local ref
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is updated even if it does not result in a fast forward
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update.
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+
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[NOTE]
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If the remote branch from which you want to pull is
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modified in non-linear ways such as being rewound and
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rebased frequently, then a pull will attempt a merge with
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an older version of itself, likely conflict, and fail.
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It is under these conditions that you would want to use
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the `+` sign to indicate non-fast-forward updates will
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be needed. There is currently no easy way to determine
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or declare that a branch will be made available in a
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repository with this behavior; the pulling user simply
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must know this is the expected usage pattern for a branch.
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+
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[NOTE]
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You never do your own development on branches that appear
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on the right hand side of a <refspec> colon on `Pull:` lines;
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they are to be updated by `git-fetch`. The corollary is that
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a local branch should be introduced and named on a <refspec>
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right-hand-side if you intend to do development derived from
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that branch.
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This leads to the common `Pull: master:origin` mapping of a
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remote `master` branch to a local `origin` branch, which
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is then merged to a local development branch, again typically
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named `master`.
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+
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Some short-cut notations are also supported.
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+
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* For backward compatibility, "tag" is almost ignored;
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* For backward compatibility, `tag` is almost ignored;
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it just makes the following parameter <tag> to mean a
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refspec "refs/tags/<tag>:refs/tags/<tag>".
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refspec `refs/tags/<tag>:refs/tags/<tag>`.
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* A parameter <ref> without a colon is equivalent to
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<ref>: when pulling/fetching, and <ref>:<ref> when
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<ref>: when pulling/fetching, and <ref>`:`<ref> when
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pushing. That is, do not store it locally if
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fetching, and update the same name if pushing.
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