Documentation: -merge and -pull: describe merge strategies.

... and give a couple of examples of running 'git pull' against
local repository.

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 67 insertions, 1 deletions

diff --git a/Documentation/git-pull.txt b/Documentation/git-pull.txt
index cef4c0ae38..2f8a9ce2f2 100644
--- a/Documentation/git-pull.txt
+++ b/Documentation/git-pull.txt
@@ -8,7 +8,7 @@ git-pull - Pull and merge from another repository.
 
 SYNOPSIS
 --------
-'git-pull' <repository> <refspec>...
+'git-pull' <options> <repository> <refspec>...
 
 
 DESCRIPTION
@@ -32,6 +32,72 @@ include::pull-fetch-param.txt[]
 	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[]
+
+
+MERGE STRATEGIES
+----------------
+
+resolve::
+	This can only resolve two heads (i.e. the current branch
+	and another branch you pulled from) using 3-way merge
+	algorithm.  It tries to carefully detect criss-cross
+	merge ambiguities and is considered generally safe and
+	fast.  This is the default merge strategy when pulling
+	one branch.
+
+recursive::
+	This can only resolve two heads using 3-way merge
+	algorithm.  When there are more than one common
+	ancestors that can be used for 3-way merge, it creates a
+	merged tree of the common ancestores and uses that as
+	the reference tree for the 3-way merge.  This has been
+	reported to result in fewer merge conflicts without
+	causing mis-merges by tests done on actual merge commits
+	taken from Linux 2.6 kernel development history.
+	Additionally this can detect and handle merges involving
+	renames.
+
+octopus::
+	This resolves more than two-head case, but refuses to do
+	complex merge that needs manual resolution.  It is
+	primarily meant to be used for bundling topic branch
+	heads together.  This is the default merge strategy when
+	pulling more than one branch.
+
+ours::
+	This resolves any number of heads, but the result of the
+	merge is always the current branch head.  It is meant to
+	be used to supersede old development history of side
+	branches.
+
+
+EXAMPLES
+--------
+
+git pull, git pull origin::
+	Fetch the default head from the repository you cloned
+	from and merge it into your current branch.
+
+git pull -s ours . obsolete::
+	Merge local branch `obsolete` into the current branch,
+	using `ours` merge strategy.
+
+git pull . fixes enhancements::
+	Bundle local branch `fixes` and `enhancements` on top of
+	the current branch, making an Octopus merge.
+
+git pull --no-commit . maint::
+	Merge local branch `maint` into the current branch, but
+	do not make a commit automatically.  This can be used
+	when you want to include further changes to the merge,
+	or want to write your own merge commit message.
++
+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.
+
+
 Author
 ------
 Written by Linus Torvalds <torvalds@osdl.org>