14 files changed, 549 insertions, 60 deletions

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 1487437..64341d5 100755
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -21,6 +21,11 @@
 #    2) Added the following line to your .bashrc:
 #        source ~/.git-completion.sh
 #
+#       Or, add the following lines to your .zshrc:
+#        autoload bashcompinit
+#        bashcompinit
+#        source ~/.git-completion.sh
+#
 #    3) Consider changing your PS1 to also show the current branch:
 #        PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
 #
@@ -42,6 +47,24 @@
 #       set GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're
 #       untracked files, then a '%' will be shown next to the branch name.
 #
+#       If you would like to see the difference between HEAD and its
+#       upstream, set GIT_PS1_SHOWUPSTREAM="auto".  A "<" indicates
+#       you are behind, ">" indicates you are ahead, and "<>"
+#       indicates you have diverged.  You can further control
+#       behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated
+#       list of values:
+#           verbose       show number of commits ahead/behind (+/-) upstream
+#           legacy        don't use the '--count' option available in recent
+#                         versions of git-rev-list
+#           git           always compare HEAD to @{upstream}
+#           svn           always compare HEAD to your SVN upstream
+#       By default, __git_ps1 will compare HEAD to your SVN upstream
+#       if it can find one, or @{upstream} otherwise.  Once you have
+#       set GIT_PS1_SHOWUPSTREAM, you can override it on a
+#       per-repository basis by setting the bash.showUpstream config
+#       variable.
+#
+#
 # To submit patches:
 #
 #    *) Read Documentation/SubmittingPatches
@@ -78,14 +101,134 @@ __gitdir ()
 	fi
 }
 
+# stores the divergence from upstream in $p
+# used by GIT_PS1_SHOWUPSTREAM
+__git_ps1_show_upstream ()
+{
+	local key value
+	local svn_remote=() svn_url_pattern count n
+	local upstream=git legacy="" verbose=""
+
+	# get some config options from git-config
+	while read key value; do
+		case "$key" in
+		bash.showupstream)
+			GIT_PS1_SHOWUPSTREAM="$value"
+			if [[ -z "${GIT_PS1_SHOWUPSTREAM}" ]]; then
+				p=""
+				return
+			fi
+			;;
+		svn-remote.*.url)
+			svn_remote[ $((${#svn_remote[@]} + 1)) ]="$value"
+			svn_url_pattern+="\\|$value"
+			upstream=svn+git # default upstream is SVN if available, else git
+			;;
+		esac
+	done < <(git config -z --get-regexp '^(svn-remote\..*\.url|bash\.showupstream)$' 2>/dev/null | tr '\0\n' '\n ')
+
+	# parse configuration values
+	for option in ${GIT_PS1_SHOWUPSTREAM}; do
+		case "$option" in
+		git|svn) upstream="$option" ;;
+		verbose) verbose=1 ;;
+		legacy)  legacy=1  ;;
+		esac
+	done
+
+	# Find our upstream
+	case "$upstream" in
+	git)    upstream="@{upstream}" ;;
+	svn*)
+		# get the upstream from the "git-svn-id: ..." in a commit message
+		# (git-svn uses essentially the same procedure internally)
+		local svn_upstream=($(git log --first-parent -1 \
+					--grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null))
+		if [[ 0 -ne ${#svn_upstream[@]} ]]; then
+			svn_upstream=${svn_upstream[ ${#svn_upstream[@]} - 2 ]}
+			svn_upstream=${svn_upstream%@*}
+			local n_stop="${#svn_remote[@]}"
+			for ((n=1; n <= n_stop; ++n)); do
+				svn_upstream=${svn_upstream#${svn_remote[$n]}}
+			done
+
+			if [[ -z "$svn_upstream" ]]; then
+				# default branch name for checkouts with no layout:
+				upstream=${GIT_SVN_ID:-git-svn}
+			else
+				upstream=${svn_upstream#/}
+			fi
+		elif [[ "svn+git" = "$upstream" ]]; then
+			upstream="@{upstream}"
+		fi
+		;;
+	esac
+
+	# Find how many commits we are ahead/behind our upstream
+	if [[ -z "$legacy" ]]; then
+		count="$(git rev-list --count --left-right \
+				"$upstream"...HEAD 2>/dev/null)"
+	else
+		# produce equivalent output to --count for older versions of git
+		local commits
+		if commits="$(git rev-list --left-right "$upstream"...HEAD 2>/dev/null)"
+		then
+			local commit behind=0 ahead=0
+			for commit in $commits
+			do
+				case "$commit" in
+				"<"*) let ++behind
+					;;
+				*)    let ++ahead
+					;;
+				esac
+			done
+			count="$behind	$ahead"
+		else
+			count=""
+		fi
+	fi
+
+	# calculate the result
+	if [[ -z "$verbose" ]]; then
+		case "$count" in
+		"") # no upstream
+			p="" ;;
+		"0	0") # equal to upstream
+			p="=" ;;
+		"0	"*) # ahead of upstream
+			p=">" ;;
+		*"	0") # behind upstream
+			p="<" ;;
+		*)	    # diverged from upstream
+			p="<>" ;;
+		esac
+	else
+		case "$count" in
+		"") # no upstream
+			p="" ;;
+		"0	0") # equal to upstream
+			p=" u=" ;;
+		"0	"*) # ahead of upstream
+			p=" u+${count#0	}" ;;
+		*"	0") # behind upstream
+			p=" u-${count%	0}" ;;
+		*)	    # diverged from upstream
+			p=" u+${count#*	}-${count%	*}" ;;
+		esac
+	fi
+
+}
+
+
 # __git_ps1 accepts 0 or 1 arguments (i.e., format string)
 # returns text to add to bash PS1 prompt (includes branch name)
 __git_ps1 ()
 {
 	local g="$(__gitdir)"
 	if [ -n "$g" ]; then
-		local r
-		local b
+		local r=""
+		local b=""
 		if [ -f "$g/rebase-merge/interactive" ]; then
 			r="|REBASE-i"
 			b="$(cat "$g/rebase-merge/head-name")"
@@ -127,11 +270,12 @@ __git_ps1 ()
 			}
 		fi
 
-		local w
-		local i
-		local s
-		local u
-		local c
+		local w=""
+		local i=""
+		local s=""
+		local u=""
+		local c=""
+		local p=""
 
 		if [ "true" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then
 			if [ "true" = "$(git rev-parse --is-bare-repository 2>/dev/null)" ]; then
@@ -159,10 +303,14 @@ __git_ps1 ()
 			      u="%"
 			   fi
 			fi
+
+			if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
+				__git_ps1_show_upstream
+			fi
 		fi
 
 		local f="$w$i$s$u"
-		printf "${1:- (%s)}" "$c${b##refs/heads/}${f:+ $f}$r"
+		printf "${1:- (%s)}" "$c${b##refs/heads/}${f:+ $f}$r$p"
 	fi
 }
 
@@ -983,7 +1131,7 @@ _git_diff ()
 	case "$cur" in
 	--*)
 		__gitcomp "--cached --staged --pickaxe-all --pickaxe-regex
-			--base --ours --theirs
+			--base --ours --theirs --no-index
 			$__git_diff_common_options
 			"
 		return
@@ -2197,6 +2345,11 @@ _git ()
 {
 	local i c=1 command __git_dir
 
+	if [[ -n $ZSH_VERSION ]]; then
+		emulate -L bash
+		setopt KSH_TYPESET
+	fi
+
 	while [ $c -lt $COMP_CWORD ]; do
 		i="${COMP_WORDS[c]}"
 		case "$i" in
@@ -2230,17 +2383,22 @@ _git ()
 	fi
 
 	local completion_func="_git_${command//-/_}"
-	declare -F $completion_func >/dev/null && $completion_func && return
+	declare -f $completion_func >/dev/null && $completion_func && return
 
 	local expansion=$(__git_aliased_command "$command")
 	if [ -n "$expansion" ]; then
 		completion_func="_git_${expansion//-/_}"
-		declare -F $completion_func >/dev/null && $completion_func
+		declare -f $completion_func >/dev/null && $completion_func
 	fi
 }
 
 _gitk ()
 {
+	if [[ -n $ZSH_VERSION ]]; then
+		emulate -L bash
+		setopt KSH_TYPESET
+	fi
+
 	__git_has_doubledash && return
 
 	local cur="${COMP_WORDS[COMP_CWORD]}"
@@ -2275,3 +2433,29 @@ if [ Cygwin = "$(uname -o 2>/dev/null)" ]; then
 complete -o bashdefault -o default -o nospace -F _git git.exe 2>/dev/null \
 	|| complete -o default -o nospace -F _git git.exe
 fi
+
+if [[ -n $ZSH_VERSION ]]; then
+	shopt () {
+		local option
+		if [ $# -ne 2 ]; then
+			echo "USAGE: $0 (-q|-s|-u) <option>" >&2
+			return 1
+		fi
+		case "$2" in
+		nullglob)
+			option="$2"
+			;;
+		*)
+			echo "$0: invalid option: $2" >&2
+			return 1
+		esac
+		case "$1" in
+		-q)	setopt | grep -q "$option" ;;
+		-u)	unsetopt "$option" ;;
+		-s)	setopt "$option" ;;
+		*)
+			echo "$0: invalid flag: $1" >&2
+			return 1
+		esac
+	}
+fi
diff --git a/contrib/examples/git-commit.sh b/contrib/examples/git-commit.sh
index 5c72f65..23ffb02 100755
--- a/contrib/examples/git-commit.sh
+++ b/contrib/examples/git-commit.sh
@@ -631,7 +631,7 @@ then
 	if test -z "$quiet"
 	then
 		commit=`git diff-tree --always --shortstat --pretty="format:%h: %s"\
-		       --summary --root HEAD --`
+		       --abbrev --summary --root HEAD --`
 		echo "Created${initial_commit:+ initial} commit $commit"
 	fi
 fi
diff --git a/contrib/examples/git-merge.sh b/contrib/examples/git-merge.sh
index 8f617fc..7b922c3 100755
--- a/contrib/examples/git-merge.sh
+++ b/contrib/examples/git-merge.sh
@@ -15,7 +15,10 @@ log                  add list of one-line log to merge commit message
 squash               create a single commit instead of doing a merge
 commit               perform a commit if the merge succeeds (default)
 ff                   allow fast-forward (default)
+ff-only              abort if fast-forward is not possible
+rerere-autoupdate    update index with any reused conflict resolution
 s,strategy=          merge strategy to use
+X=                   option for selected merge strategy
 m,message=           message to be used for the merge commit (if any)
 "
 
@@ -25,26 +28,32 @@ require_work_tree
 cd_to_toplevel
 
 test -z "$(git ls-files -u)" ||
-	die "You are in the middle of a conflicted merge."
+	die "Merge is not possible because you have unmerged files."
+
+! test -e "$GIT_DIR/MERGE_HEAD" ||
+	die 'You have not concluded your merge (MERGE_HEAD exists).'
 
 LF='
 '
 
 all_strategies='recur recursive octopus resolve stupid ours subtree'
 all_strategies="$all_strategies recursive-ours recursive-theirs"
+not_strategies='base file index tree'
 default_twohead_strategies='recursive'
 default_octopus_strategies='octopus'
 no_fast_forward_strategies='subtree ours'
 no_trivial_strategies='recursive recur subtree ours recursive-ours recursive-theirs'
 use_strategies=
+xopt=
 
 allow_fast_forward=t
+fast_forward_only=
 allow_trivial_merge=t
-squash= no_commit= log_arg=
+squash= no_commit= log_arg= rr_arg=
 
 dropsave() {
 	rm -f -- "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/MERGE_MSG" \
-		 "$GIT_DIR/MERGE_STASH" || exit 1
+		 "$GIT_DIR/MERGE_STASH" "$GIT_DIR/MERGE_MODE" || exit 1
 }
 
 savestate() {
@@ -131,21 +140,34 @@ finish () {
 merge_name () {
 	remote="$1"
 	rh=$(git rev-parse --verify "$remote^0" 2>/dev/null) || return
-	bh=$(git show-ref -s --verify "refs/heads/$remote" 2>/dev/null)
-	if test "$rh" = "$bh"
-	then
-		echo "$rh		branch '$remote' of ."
-	elif truname=$(expr "$remote" : '\(.*\)~[1-9][0-9]*$') &&
+	if truname=$(expr "$remote" : '\(.*\)~[0-9]*$') &&
 		git show-ref -q --verify "refs/heads/$truname" 2>/dev/null
 	then
 		echo "$rh		branch '$truname' (early part) of ."
-	elif test "$remote" = "FETCH_HEAD" -a -r "$GIT_DIR/FETCH_HEAD"
+		return
+	fi
+	if found_ref=$(git rev-parse --symbolic-full-name --verify \
+							"$remote" 2>/dev/null)
+	then
+		expanded=$(git check-ref-format --branch "$remote") ||
+			exit
+		if test "${found_ref#refs/heads/}" != "$found_ref"
+		then
+			echo "$rh		branch '$expanded' of ."
+			return
+		elif test "${found_ref#refs/remotes/}" != "$found_ref"
+		then
+			echo "$rh		remote branch '$expanded' of ."
+			return
+		fi
+	fi
+	if test "$remote" = "FETCH_HEAD" -a -r "$GIT_DIR/FETCH_HEAD"
 	then
 		sed -e 's/	not-for-merge	/		/' -e 1q \
 			"$GIT_DIR/FETCH_HEAD"
-	else
-		echo "$rh		commit '$remote'"
+		return
 	fi
+	echo "$rh		commit '$remote'"
 }
 
 parse_config () {
@@ -172,16 +194,36 @@ parse_config () {
 		--no-ff)
 			test "$squash" != t ||
 				die "You cannot combine --squash with --no-ff."
+			test "$fast_forward_only" != t ||
+				die "You cannot combine --ff-only with --no-ff."
 			allow_fast_forward=f ;;
+		--ff-only)
+			test "$allow_fast_forward" != f ||
+				die "You cannot combine --ff-only with --no-ff."
+			fast_forward_only=t ;;
+		--rerere-autoupdate|--no-rerere-autoupdate)
+			rr_arg=$1 ;;
 		-s|--strategy)
 			shift
 			case " $all_strategies " in
 			*" $1 "*)
-				use_strategies="$use_strategies$1 " ;;
+				use_strategies="$use_strategies$1 "
+				;;
 			*)
-				die "available strategies are: $all_strategies" ;;
+				case " $not_strategies " in
+				*" $1 "*)
+					false
+				esac &&
+				type "git-merge-$1" >/dev/null 2>&1 ||
+					die "available strategies are: $all_strategies"
+				use_strategies="$use_strategies$1 "
+				;;
 			esac
 			;;
+		-X)
+			shift
+			xopt="${xopt:+$xopt }$(git rev-parse --sq-quote "--$1")"
+			;;
 		-m|--message)
 			shift
 			merge_msg="$1"
@@ -245,6 +287,10 @@ then
 		exit 1
 	fi
 
+	test "$squash" != t ||
+		die "Squash commit into empty head not supported yet"
+	test "$allow_fast_forward" = t ||
+		die "Non-fast-forward into an empty head does not make sense"
 	rh=$(git rev-parse --verify "$1^0") ||
 		die "$1 - not something we can merge"
 
@@ -261,12 +307,18 @@ else
 	# the given message.  If remote is invalid we will die
 	# later in the common codepath so we discard the error
 	# in this loop.
-	merge_name=$(for remote
+	merge_msg="$(
+		for remote
 		do
 			merge_name "$remote"
-		done | git fmt-merge-msg $log_arg
-	)
-	merge_msg="${merge_msg:+$merge_msg$LF$LF}$merge_name"
+		done |
+		if test "$have_message" = t
+		then
+			git fmt-merge-msg -m "$merge_msg" $log_arg
+		else
+			git fmt-merge-msg $log_arg
+		fi
+	)"
 fi
 head=$(git rev-parse --verify "$head_arg"^0) || usage
 
@@ -335,7 +387,7 @@ case "$#" in
 	common=$(git merge-base --all $head "$@")
 	;;
 *)
-	common=$(git show-branch --merge-base $head "$@")
+	common=$(git merge-base --all --octopus $head "$@")
 	;;
 esac
 echo "$head" >"$GIT_DIR/ORIG_HEAD"
@@ -373,8 +425,8 @@ t,1,"$head",*)
 	# We are not doing octopus, not fast-forward, and have only
 	# one common.
 	git update-index --refresh 2>/dev/null
-	case "$allow_trivial_merge" in
-	t)
+	case "$allow_trivial_merge,$fast_forward_only" in
+	t,)
 		# See if it is really trivial.
 		git var GIT_COMMITTER_IDENT >/dev/null || exit
 		echo "Trying really trivial in-index merge..."
@@ -413,6 +465,11 @@ t,1,"$head",*)
 	;;
 esac
 
+if test "$fast_forward_only" = t
+then
+	die "Not possible to fast-forward, aborting."
+fi
+
 # We are going to make a new commit.
 git var GIT_COMMITTER_IDENT >/dev/null || exit
 
@@ -451,7 +508,7 @@ do
     # Remember which strategy left the state in the working tree
     wt_strategy=$strategy
 
-    git-merge-$strategy $common -- "$head_arg" "$@"
+    eval 'git-merge-$strategy '"$xopt"' $common -- "$head_arg" "$@"'
     exit=$?
     if test "$no_commit" = t && test "$exit" = 0
     then
@@ -489,9 +546,9 @@ if test '' != "$result_tree"
 then
     if test "$allow_fast_forward" = "t"
     then
-        parents=$(git show-branch --independent "$head" "$@")
+	parents=$(git merge-base --independent "$head" "$@")
     else
-        parents=$(git rev-parse "$head" "$@")
+	parents=$(git rev-parse "$head" "$@")
     fi
     parents=$(echo "$parents" | sed -e 's/^/-p /')
     result_commit=$(printf '%s\n' "$merge_msg" | git commit-tree $result_tree $parents) || exit
@@ -533,7 +590,15 @@ else
 	do
 		echo $remote
 	done >"$GIT_DIR/MERGE_HEAD"
-	printf '%s\n' "$merge_msg" >"$GIT_DIR/MERGE_MSG"
+	printf '%s\n' "$merge_msg" >"$GIT_DIR/MERGE_MSG" ||
+		die "Could not write to $GIT_DIR/MERGE_MSG"
+	if test "$allow_fast_forward" != t
+	then
+		printf "%s" no-ff
+	else
+		:
+	fi >"$GIT_DIR/MERGE_MODE" ||
+		die "Could not write to $GIT_DIR/MERGE_MODE"
 fi
 
 if test "$merge_was_ok" = t
@@ -550,6 +615,6 @@ Conflicts:
 		sed -e 's/^[^	]*	/	/' |
 		uniq
 	} >>"$GIT_DIR/MERGE_MSG"
-	git rerere
+	git rerere $rr_arg
 	die "Automatic merge failed; fix conflicts and then commit the result."
 fi
diff --git a/contrib/examples/git-revert.sh b/contrib/examples/git-revert.sh
index 49f0032..60a05a8 100755
--- a/contrib/examples/git-revert.sh
+++ b/contrib/examples/git-revert.sh
@@ -181,7 +181,6 @@ Conflicts:
 	esac
 	exit 1
 }
-echo >&2 "Finished one $me."
 
 # If we are cherry-pick, and if the merge did not result in
 # hand-editing, we will hit this commit and inherit the original
diff --git a/contrib/examples/git-svnimport.perl b/contrib/examples/git-svnimport.perl
index 4576c4a..6c4cab3 100755
--- a/contrib/examples/git-svnimport.perl
+++ b/contrib/examples/git-svnimport.perl
@@ -289,7 +289,7 @@ my $current_rev = $opt_s || 1;
 unless(-d $git_dir) {
 	system("git init");
 	die "Cannot init the GIT db at $git_tree: $?\n" if $?;
-	system("git read-tree");
+	system("git read-tree --empty");
 	die "Cannot init an empty tree: $?\n" if $?;
 
 	$last_branch = $opt_o;
diff --git a/contrib/git-shell-commands/README b/contrib/git-shell-commands/README
new file mode 100644
index 0000000..438463b
--- /dev/null
+++ b/contrib/git-shell-commands/README
@@ -0,0 +1,18 @@
+Sample programs callable through git-shell.  Place a directory named
+'git-shell-commands' in the home directory of a user whose shell is
+git-shell.  Then anyone logging in as that user will be able to run
+executables in the 'git-shell-commands' directory.
+
+Provided commands:
+
+help: Prints out the names of available commands.  When run
+interactively, git-shell will automatically run 'help' on startup,
+provided it exists.
+
+list: Displays any bare repository whose name ends with ".git" under
+user's home directory.  No other git repositories are visible,
+although they might be clonable through git-shell.  'list' is designed
+to minimize the number of calls to git that must be made in finding
+available repositories; if your setup has additional repositories that
+should be user-discoverable, you may wish to modify 'list'
+accordingly.
diff --git a/contrib/git-shell-commands/help b/contrib/git-shell-commands/help
new file mode 100755
index 0000000..535770c
--- /dev/null
+++ b/contrib/git-shell-commands/help
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+if tty -s
+then
+	echo "Run 'help' for help, or 'exit' to leave.  Available commands:"
+else
+	echo "Run 'help' for help.  Available commands:"
+fi
+
+cd "$(dirname "$0")"
+
+for cmd in *
+do
+	case "$cmd" in
+	help) ;;
+	*) [ -f "$cmd" ] && [ -x "$cmd" ] && echo "$cmd" ;;
+	esac
+done
diff --git a/contrib/git-shell-commands/list b/contrib/git-shell-commands/list
new file mode 100755
index 0000000..6f89938
--- /dev/null
+++ b/contrib/git-shell-commands/list
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+print_if_bare_repo='
+	if "$(git --git-dir="$1" rev-parse --is-bare-repository)" = true
+	then
+		printf "%s\n" "${1#./}"
+	fi
+'
+
+find -type d -name "*.git" -exec sh -c "$print_if_bare_repo" -- \{} \; -prune 2>/dev/null
diff --git a/contrib/hooks/post-receive-email b/contrib/hooks/post-receive-email
index 30ae63d..85724bf 100755
--- a/contrib/hooks/post-receive-email
+++ b/contrib/hooks/post-receive-email
@@ -55,6 +55,11 @@
 #     "t=%s; printf 'http://.../?id=%%s' \$t; echo;echo; git show -C \$t; echo"
 #   Be careful if "..." contains things that will be expanded by shell "eval"
 #   or printf.
+# hooks.emailmaxlines
+#   The maximum number of lines that should be included in the generated
+#   email body. If not specified, there is no limit.
+#   Lines beyond the limit are suppressed and counted, and a final
+#   line is added indicating the number of suppressed lines.
 #
 # Notes
 # -----
@@ -66,24 +71,16 @@
 # ---------------------------- Functions
 
 #
-# Top level email generation function.  This decides what type of update
-# this is and calls the appropriate body-generation routine after outputting
-# the common header
+# Function to prepare for email generation. This decides what type
+# of update this is and whether an email should even be generated.
 #
-# Note this function doesn't actually generate any email output, that is
-# taken care of by the functions it calls:
-#  - generate_email_header
-#  - generate_create_XXXX_email
-#  - generate_update_XXXX_email
-#  - generate_delete_XXXX_email
-#  - generate_email_footer
-#
-generate_email()
+prep_for_email()
 {
 	# --- Arguments
 	oldrev=$(git rev-parse $1)
 	newrev=$(git rev-parse $2)
 	refname="$3"
+	maxlines=$4
 
 	# --- Interpret
 	# 0000->1234 (create)
@@ -153,7 +150,7 @@ generate_email()
 			# Anything else (is there anything else?)
 			echo >&2 "*** Unknown type of update to $refname ($rev_type)"
 			echo >&2 "***  - no email generated"
-			exit 1
+			return 0
 			;;
 	esac
 
@@ -169,9 +166,32 @@ generate_email()
 		esac
 		echo >&2 "*** $config_name is not set so no email will be sent"
 		echo >&2 "*** for $refname update $oldrev->$newrev"
-		exit 0
+		return 0
 	fi
 
+	return 1
+}
+
+#
+# Top level email generation function.  This calls the appropriate
+# body-generation routine after outputting the common header.
+#
+# Note this function doesn't actually generate any email output, that is
+# taken care of by the functions it calls:
+#  - generate_email_header
+#  - generate_create_XXXX_email
+#  - generate_update_XXXX_email
+#  - generate_delete_XXXX_email
+#  - generate_email_footer
+#
+# Note also that this function cannot 'exit' from the script; when this
+# function is running (in hook script mode), the send_mail() function
+# is already executing in another process, connected via a pipe, and
+# if this function exits without, whatever has been generated to that
+# point will be sent as an email... even if nothing has been generated.
+#
+generate_email()
+{
 	# Email parameters
 	# The email subject will contain the best description of the ref
 	# that we can build from the parameters
@@ -192,7 +212,12 @@ generate_email()
 		fn_name=atag
 		;;
 	esac
-	generate_${change_type}_${fn_name}_email
+
+	if [ -z "$maxlines" ]; then
+		generate_${change_type}_${fn_name}_email
+	else
+		generate_${change_type}_${fn_name}_email | limit_lines $maxlines
+	fi
 
 	generate_email_footer
 }
@@ -203,7 +228,7 @@ generate_email_header()
 	# Generate header
 	cat <<-EOF
 	To: $recipients
-	Subject: ${emailprefix}$projectdesc $refname_type, $short_refname, ${change_type}d. $describe
+	Subject: ${emailprefix}$projectdesc $refname_type $short_refname ${change_type}d. $describe
 	X-Git-Refname: $refname
 	X-Git-Reftype: $refname_type
 	X-Git-Oldrev: $oldrev
@@ -642,6 +667,24 @@ show_new_revisions()
 }
 
 
+limit_lines()
+{
+	lines=0
+	skipped=0
+	while IFS="" read -r line; do
+		lines=$((lines + 1))
+		if [ $lines -gt $1 ]; then
+			skipped=$((skipped + 1))
+		else
+			printf "%s\n" "$line"
+		fi
+	done
+	if [ $skipped -ne 0 ]; then
+		echo "... $skipped lines suppressed ..."
+	fi
+}
+
+
 send_mail()
 {
 	if [ -n "$envelopesender" ]; then
@@ -679,6 +722,7 @@ announcerecipients=$(git config hooks.announcelist)
 envelopesender=$(git config hooks.envelopesender)
 emailprefix=$(git config hooks.emailprefix || echo '[SCM] ')
 custom_showrev=$(git config hooks.showrev)
+maxlines=$(git config hooks.emailmaxlines)
 
 # --- Main loop
 # Allow dual mode: run from the command line just like the update hook, or
@@ -687,10 +731,11 @@ if [ -n "$1" -a -n "$2" -a -n "$3" ]; then
 	# Output to the terminal in command line mode - if someone wanted to
 	# resend an email; they could redirect the output to sendmail
 	# themselves
-	PAGER= generate_email $2 $3 $1
+	prep_for_email $2 $3 $1 && PAGER= generate_email
 else
 	while read oldrev newrev refname
 	do
-		generate_email $oldrev $newrev $refname | send_mail
+		prep_for_email $oldrev $newrev $refname || continue
+		generate_email $maxlines | send_mail
 	done
 fi
diff --git a/contrib/svn-fe/.gitignore b/contrib/svn-fe/.gitignore
new file mode 100644
index 0000000..02a7791
--- /dev/null
+++ b/contrib/svn-fe/.gitignore
@@ -0,0 +1,4 @@
+/*.xml
+/*.1
+/*.html
+/svn-fe
diff --git a/contrib/svn-fe/Makefile b/contrib/svn-fe/Makefile
new file mode 100644
index 0000000..360d8da
--- /dev/null
+++ b/contrib/svn-fe/Makefile
@@ -0,0 +1,63 @@
+all:: svn-fe$X
+
+CC = gcc
+RM = rm -f
+MV = mv
+
+CFLAGS = -g -O2 -Wall
+LDFLAGS =
+ALL_CFLAGS = $(CFLAGS)
+ALL_LDFLAGS = $(LDFLAGS)
+EXTLIBS =
+
+GIT_LIB = ../../libgit.a
+VCSSVN_LIB = ../../vcs-svn/lib.a
+LIBS = $(VCSSVN_LIB) $(GIT_LIB) $(EXTLIBS)
+
+QUIET_SUBDIR0 = +$(MAKE) -C # space to separate -C and subdir
+QUIET_SUBDIR1 =
+
+ifneq ($(findstring $(MAKEFLAGS),w),w)
+PRINT_DIR = --no-print-directory
+else # "make -w"
+NO_SUBDIR = :
+endif
+
+ifneq ($(findstring $(MAKEFLAGS),s),s)
+ifndef V
+	QUIET_CC      = @echo '   ' CC $@;
+	QUIET_LINK    = @echo '   ' LINK $@;
+	QUIET_SUBDIR0 = +@subdir=
+	QUIET_SUBDIR1 = ;$(NO_SUBDIR) echo '   ' SUBDIR $$subdir; \
+	                $(MAKE) $(PRINT_DIR) -C $$subdir
+endif
+endif
+
+svn-fe$X: svn-fe.o $(VCSSVN_LIB) $(GIT_LIB)
+	$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ svn-fe.o \
+		$(ALL_LDFLAGS) $(LIBS)
+
+svn-fe.o: svn-fe.c ../../vcs-svn/svndump.h
+	$(QUIET_CC)$(CC) -I../../vcs-svn -o $*.o -c $(ALL_CFLAGS) $<
+
+svn-fe.html: svn-fe.txt
+	$(QUIET_SUBDIR0)../../Documentation $(QUIET_SUBDIR1) \
+		MAN_TXT=../contrib/svn-fe/svn-fe.txt \
+		../contrib/svn-fe/$@
+
+svn-fe.1: svn-fe.txt
+	$(QUIET_SUBDIR0)../../Documentation $(QUIET_SUBDIR1) \
+		MAN_TXT=../contrib/svn-fe/svn-fe.txt \
+		../contrib/svn-fe/$@
+	$(MV) ../../Documentation/svn-fe.1 .
+
+../../vcs-svn/lib.a: FORCE
+	$(QUIET_SUBDIR0)../.. $(QUIET_SUBDIR1) vcs-svn/lib.a
+
+../../libgit.a: FORCE
+	$(QUIET_SUBDIR0)../.. $(QUIET_SUBDIR1) libgit.a
+
+clean:
+	$(RM) svn-fe$X svn-fe.o svn-fe.html svn-fe.xml svn-fe.1
+
+.PHONY: all clean FORCE
diff --git a/contrib/svn-fe/svn-fe.c b/contrib/svn-fe/svn-fe.c
new file mode 100644
index 0000000..a2677b0
--- /dev/null
+++ b/contrib/svn-fe/svn-fe.c
@@ -0,0 +1,16 @@
+/*
+ * This file is in the public domain.
+ * You may freely use, modify, distribute, and relicense it.
+ */
+
+#include <stdlib.h>
+#include "svndump.h"
+
+int main(int argc, char **argv)
+{
+	svndump_init(NULL);
+	svndump_read((argc > 1) ? argv[1] : NULL);
+	svndump_deinit();
+	svndump_reset();
+	return 0;
+}
diff --git a/contrib/svn-fe/svn-fe.txt b/contrib/svn-fe/svn-fe.txt
new file mode 100644
index 0000000..35f84bd
--- /dev/null
+++ b/contrib/svn-fe/svn-fe.txt
@@ -0,0 +1,67 @@
+svn-fe(1)
+=========
+
+NAME
+----
+svn-fe - convert an SVN "dumpfile" to a fast-import stream
+
+SYNOPSIS
+--------
+svnadmin dump --incremental REPO | svn-fe [url] | git fast-import
+
+DESCRIPTION
+-----------
+
+Converts a Subversion dumpfile into input suitable for
+git-fast-import(1) and similar importers. REPO is a path to a
+Subversion repository mirrored on the local disk. Remote Subversion
+repositories can be mirrored on local disk using the `svnsync`
+command.
+
+INPUT FORMAT
+------------
+Subversion's repository dump format is documented in full in
+`notes/dump-load-format.txt` from the Subversion source tree.
+Files in this format can be generated using the 'svnadmin dump' or
+'svk admin dump' command.
+
+Dumps produced with 'svnadmin dump --deltas' (dumpfile format v3)
+are not supported.
+
+OUTPUT FORMAT
+-------------
+The fast-import format is documented by the git-fast-import(1)
+manual page.
+
+NOTES
+-----
+Subversion dumps do not record a separate author and committer for
+each revision, nor a separate display name and email address for
+each author.  Like git-svn(1), 'svn-fe' will use the name
+
+---------
+user <user@UUID>
+---------
+
+as committer, where 'user' is the value of the `svn:author` property
+and 'UUID' the repository's identifier.
+
+To support incremental imports, 'svn-fe' puts a `git-svn-id` line at
+the end of each commit log message if passed an url on the command
+line.  This line has the form `git-svn-id: URL@REVNO UUID`.
+
+The resulting repository will generally require further processing
+to put each project in its own repository and to separate the history
+of each branch.  The 'git filter-branch --subdirectory-filter' command
+may be useful for this purpose.
+
+BUGS
+----
+Empty directories and unknown properties are silently discarded.
+
+The exit status does not reflect whether an error was detected.
+
+SEE ALSO
+--------
+git-svn(1), svn2git(1), svk(1), git-filter-branch(1), git-fast-import(1),
+https://svn.apache.org/repos/asf/subversion/trunk/notes/dump-load-format.txt
diff --git a/contrib/workdir/git-new-workdir b/contrib/workdir/git-new-workdir
index 993cacf..75e8b25 100755
--- a/contrib/workdir/git-new-workdir
+++ b/contrib/workdir/git-new-workdir
@@ -42,7 +42,7 @@ then
 fi
 
 # don't link to a workdir
-if test -L "$git_dir/config"
+if test -h "$git_dir/config"
 then
 	die "\"$orig_git\" is a working directory only, please specify" \
 		"a complete repository."
@@ -54,13 +54,13 @@ then
 	die "destination directory '$new_workdir' already exists."
 fi
 
-# make sure the the links use full paths
+# make sure the links use full paths
 git_dir=$(cd "$git_dir"; pwd)
 
 # create the workdir
 mkdir -p "$new_workdir/.git" || die "unable to create \"$new_workdir\"!"
 
-# create the links to the original repo.  explictly exclude index, HEAD and
+# create the links to the original repo.  explicitly exclude index, HEAD and
 # logs/HEAD from the list since they are purely related to the current working
 # directory, and should not be shared.
 for x in config refs logs/refs objects info hooks packed-refs remotes rr-cache svn