git-p4: Unset P4DIFF environment variable when using 'p4 -du diff'

diff --git a/Documentation/git-send-pack.txt b/Documentation/git-send-pack.txt
index 205bfd2d259abd33873305d28281166a42285f6e..777515b12e5e3b276285d3b034f91aab5c1e34cc 100644 (file)
--- a/Documentation/git-send-pack.txt
+++ b/Documentation/git-send-pack.txt
@@ -8,11 +8,11 @@ git-send-pack - Push objects over git protocol to another repository
 
 SYNOPSIS
 --------
-'git-send-pack' [--all] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]
+'git-send-pack' [--all] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]
 
 DESCRIPTION
 -----------
-Usually you would want to use gitlink:git-push[1] which is a
+Usually you would want to use linkgit:git-push[1] which is a
 higher level wrapper of this command instead.
 
 Invokes 'git-receive-pack' on a possibly remote repository, and
@@ -32,7 +32,10 @@ OPTIONS
 
 \--all::
        Instead of explicitly specifying which refs to update,
-       update all refs that locally exist.
+       update all heads that locally exist.
+
+\--dry-run::
+       Do everything except actually send the updates.
 
 \--force::
        Usually, the command refuses to update a remote ref that
@@ -70,7 +73,7 @@ With '--all' flag, all refs that exist locally are transferred to
 the remote side.  You cannot specify any '<ref>' if you use
 this flag.
 
-Without '--all' and without any '<ref>', the refs that exist
+Without '--all' and without any '<ref>', the heads that exist
 both on the local side and on the remote side are updated.
 
 When one or more '<ref>' are specified explicitly, it can be either a
@@ -82,7 +85,9 @@ Each pattern pair consists of the source side (before the colon)
 and the destination side (after the colon).  The ref to be
 pushed is determined by finding a match that matches the source
 side, and where it is pushed is determined by using the
-destination side.
+destination side. The rules used to match a ref are the same
+rules used by linkgit:git-rev-parse[1] to resolve a symbolic ref
+name.
 
  - It is an error if <src> does not match exactly one of the
    local refs.
@@ -120,4 +125,4 @@ Documentation by Junio C Hamano.
 
 GIT
 ---
-Part of the gitlink:git[7] suite
+Part of the linkgit:git[7] suite