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authorJon Loeliger <jdl@freescale.com>2005-11-04 20:36:08 -0600
committerJunio C Hamano <junkio@cox.net>2005-11-04 19:28:39 -0800
commitbccf5956c323a043e9a5d540b3c842ae6e5e5220 (patch)
treeef3876e50bb5e91a6fb40d4e59df2178c6f40237
parentd8ae1d10cd08ff1f0b749222d083446ef7bd8f3f (diff)
downloadgit-bccf5956c323a043e9a5d540b3c842ae6e5e5220.tar.gz
git-bccf5956c323a043e9a5d540b3c842ae6e5e5220.tar.xz
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>
-rw-r--r--Documentation/git-pull.txt63
-rw-r--r--Documentation/pull-fetch-param.txt72
2 files changed, 103 insertions, 32 deletions
diff --git a/Documentation/git-pull.txt b/Documentation/git-pull.txt
index 2f8a9ce2f..5a11da1f7 100644
--- a/Documentation/git-pull.txt
+++ b/Documentation/git-pull.txt
@@ -13,13 +13,10 @@ SYNOPSIS
DESCRIPTION
-----------
-Runs 'git-fetch' with the given parameters.
+Runs `git-fetch` with the given parameters, and calls `git-merge`
+to merge the retrieved head(s) into the current branch.
-When only one ref is downloaded, runs 'git resolve' to merge it
-into the local HEAD. Otherwise uses 'git octopus' to merge them
-into the local HEAD.
-
-Note that you can use '.' (current directory) as the
+Note that you can use `.` (current directory) as the
<repository> to pull from the local repository -- this is useful
when merging local branches into the current branch.
@@ -29,8 +26,8 @@ include::pull-fetch-param.txt[]
-a, \--append::
Append ref names and object names of fetched refs to the
- existing contents of $GIT_DIR/FETCH_HEAD. Without this
- option old data in $GIT_DIR/FETCH_HEAD will be overwritten.
+ existing contents of `$GIT_DIR/FETCH_HEAD`. Without this
+ option old data in `$GIT_DIR/FETCH_HEAD` will be overwritten.
include::merge-pull-opts.txt[]
@@ -97,6 +94,52 @@ You should refrain from abusing this option to sneak substantial
changes into a merge commit. Small fixups like bumping
release/version name would be acceptable.
+Command line pull of multiple branches from one repository::
++
+------------------------------------------------
+$ cat .git/remotes/origin
+URL: git://git.kernel.org/pub/scm/git/git.git
+Pull: master:origin
+
+$ git checkout master
+$ git fetch origin master:origin +pu:pu maint:maint
+$ git pull . origin
+------------------------------------------------
++
+Here, a typical `$GIT_DIR/remotes/origin` file from a
+`git-clone` operation is used in combination with
+command line options to `git-fetch` to first update
+multiple branches of the local repository and then
+to merge the remote `origin` branch into the local
+`master` branch. The local `pu` branch is updated
+even if it does not result in a fast forward update.
+Here, the pull can obtain its objects from the local
+repository using `.`, as the previous `git-fetch` is
+known to have already obtained and made available
+all the necessary objects.
+
+
+Pull of multiple branches from one repository using `$GIT_DIR/remotes` file::
++
+------------------------------------------------
+$ cat .git/remotes/origin
+URL: git://git.kernel.org/pub/scm/git/git.git
+Pull: master:origin
+Pull: +pu:pu
+Pull: maint:maint
+
+$ git checkout master
+$ git pull origin
+------------------------------------------------
++
+Here, a typical `$GIT_DIR/remotes/origin` file from a
+`git-clone` operation has been hand-modified to include
+the branch-mapping of additional remote and local
+heads directly. A single `git-pull` operation while
+in the `master` branch will fetch multiple heads and
+merge the remote `origin` head into the current,
+local `master` branch.
+
Author
------
@@ -105,7 +148,9 @@ and Junio C Hamano <junkio@cox.net>
Documentation
--------------
-Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
+Documentation by Jon Loeliger,
+David Greaves,
+Junio C Hamano and the git-list <git@vger.kernel.org>.
GIT
---
diff --git a/Documentation/pull-fetch-param.txt b/Documentation/pull-fetch-param.txt
index e8db9d7ca..2a7131874 100644
--- a/Documentation/pull-fetch-param.txt
+++ b/Documentation/pull-fetch-param.txt
@@ -1,7 +1,8 @@
<repository>::
- The "remote" repository to pull from. One of the
- following notations can be used to name the repository
- to pull from:
+ The "remote" repository that is the source of a fetch
+ or pull operation, or the destination of a push operation.
+ One of the following notations can be used
+ to name the remote repository:
+
===============================================================
- Rsync URL: rsync://remote.machine/path/to/repo.git/
@@ -12,7 +13,7 @@
===============================================================
+
In addition to the above, as a short-hand, the name of a
-file in $GIT_DIR/remotes directory can be given; the
+file in `$GIT_DIR/remotes` directory can be given; the
named file should be in the following format:
+
URL: one of the above URL format
@@ -21,57 +22,82 @@ named file should be in the following format:
+
When such a short-hand is specified in place of
<repository> without <refspec> parameters on the command
-line, <refspec>... specified on Push lines or Pull lines
-are used for "git push" and "git fetch/pull",
-respectively.
+line, <refspec>... specified on `Push:` lines or `Pull:`
+lines are used for `git-push` and `git-fetch`/`git-pull`,
+respectively. Multiple `Push:` and and `Pull:` lines may
+be specified for additional branch mappings.
+
-The name of a file in $GIT_DIR/branches directory can be
+The name of a file in `$GIT_DIR/branches` directory can be
specified as an older notation short-hand; the named
file should contain a single line, a URL in one of the
-above formats, optionally followed by a hash '#' and the
+above formats, optionally followed by a hash `#` and the
name of remote head (URL fragment notation).
-$GIT_DIR/branches/<remote> file that stores a <url>
+`$GIT_DIR/branches/<remote>` file that stores a <url>
without the fragment is equivalent to have this in the
-corresponding file in the $GIT_DIR/remotes/ directory
+corresponding file in the `$GIT_DIR/remotes/` directory.
+
URL: <url>
Pull: refs/heads/master:<remote>
+
-while having <url>#<head> is equivalent to
+while having `<url>#<head>` is equivalent to
+
URL: <url>
Pull: refs/heads/<head>:<remote>
<refspec>::
The canonical format of a <refspec> parameter is
- '+?<src>:<dst>'; that is, an optional plus '+', followed
- by the source ref, followed by a colon ':', followed by
+ `+?<src>:<dst>`; that is, an optional plus `+`, followed
+ by the source ref, followed by a colon `:`, followed by
the destination ref.
+
-When used in "git push", the <src> side can be an
+When used in `git-push`, the <src> side can be an
arbitrary "SHA1 expression" that can be used as an
-argument to "git-cat-file -t". E.g. "master~4" (push
+argument to `git-cat-file -t`. E.g. `master~4` (push
four parents before the current master head).
+
-For "git push", the local ref that matches <src> is used
+For `git-push`, the local ref that matches <src> is used
to fast forward the remote ref that matches <dst>. If
-the optional plus '+' is used, the remote ref is updated
+the optional plus `+` is used, the remote ref is updated
even if it does not result in a fast forward update.
+
-For "git fetch/pull", the remote ref that matches <src>
+For `git-fetch` and `git-pull`, the remote ref that matches <src>
is fetched, and if <dst> is not empty string, the local
ref that matches it is fast forwarded using <src>.
-Again, if the optional plus '+' is used, the local ref
+Again, if the optional plus `+` is used, the local ref
is updated even if it does not result in a fast forward
update.
+
+[NOTE]
+If the remote branch from which you want to pull is
+modified in non-linear ways such as being rewound and
+rebased frequently, then a pull will attempt a merge with
+an older version of itself, likely conflict, and fail.
+It is under these conditions that you would want to use
+the `+` sign to indicate non-fast-forward updates will
+be needed. There is currently no easy way to determine
+or declare that a branch will be made available in a
+repository with this behavior; the pulling user simply
+must know this is the expected usage pattern for a branch.
++
+[NOTE]
+You never do your own development on branches that appear
+on the right hand side of a <refspec> colon on `Pull:` lines;
+they are to be updated by `git-fetch`. The corollary is that
+a local branch should be introduced and named on a <refspec>
+right-hand-side if you intend to do development derived from
+that branch.
+This leads to the common `Pull: master:origin` mapping of a
+remote `master` branch to a local `origin` branch, which
+is then merged to a local development branch, again typically
+named `master`.
++
Some short-cut notations are also supported.
+
-* For backward compatibility, "tag" is almost ignored;
+* For backward compatibility, `tag` is almost ignored;
it just makes the following parameter <tag> to mean a
- refspec "refs/tags/<tag>:refs/tags/<tag>".
+ refspec `refs/tags/<tag>:refs/tags/<tag>`.
* A parameter <ref> without a colon is equivalent to
- <ref>: when pulling/fetching, and <ref>:<ref> when
+ <ref>: when pulling/fetching, and <ref>`:`<ref> when
pushing. That is, do not store it locally if
fetching, and update the same name if pushing.