diff --git a/plugins/gitfast/_git b/plugins/gitfast/_git
index fac5e711e..6b7796857 100644
--- a/plugins/gitfast/_git
+++ b/plugins/gitfast/_git
@@ -30,10 +30,10 @@ if [ -z "$script" ]; then
 	local -a locations
 	local e
 	locations=(
+		$(dirname ${funcsourcetrace[1]%:*})/git-completion.bash
 		'/etc/bash_completion.d/git' # fedora, old debian
 		'/usr/share/bash-completion/completions/git' # arch, ubuntu, new debian
 		'/usr/share/bash-completion/git' # gentoo
-		$(dirname ${funcsourcetrace[1]%:*})/git-completion.bash
 		)
 	for e in $locations; do
 		test -f $e && script="$e" && break
@@ -76,6 +76,14 @@ __gitcomp_nl ()
 	compadd -Q -S "${4- }" -p "${2-}" -- ${=1} && _ret=0
 }
 
+__gitcomp_nl_append ()
+{
+	emulate -L zsh
+
+	local IFS=$'\n'
+	compadd -Q -S "${4- }" -p "${2-}" -- ${=1} && _ret=0
+}
+
 __gitcomp_file ()
 {
 	emulate -L zsh
diff --git a/plugins/gitfast/git-completion.bash b/plugins/gitfast/git-completion.bash
index 5da920ecd..9525343fc 100644
--- a/plugins/gitfast/git-completion.bash
+++ b/plugins/gitfast/git-completion.bash
@@ -1,5 +1,3 @@
-#!bash
-#
 # bash/zsh completion support for core Git.
 #
 # Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org>
@@ -180,9 +178,9 @@ _get_comp_words_by_ref ()
 }
 fi
 
-__gitcompadd ()
+__gitcompappend ()
 {
-	local i=0
+	local i=${#COMPREPLY[@]}
 	for x in $1; do
 		if [[ "$x" == "$3"* ]]; then
 			COMPREPLY[i++]="$2$x$4"
@@ -190,6 +188,12 @@ __gitcompadd ()
 	done
 }
 
+__gitcompadd ()
+{
+	COMPREPLY=()
+	__gitcompappend "$@"
+}
+
 # Generates completion reply, appending a space to possible completion words,
 # if necessary.
 # It accepts 1 to 4 arguments:
@@ -220,6 +224,14 @@ __gitcomp ()
 	esac
 }
 
+# Variation of __gitcomp_nl () that appends to the existing list of
+# completion candidates, COMPREPLY.
+__gitcomp_nl_append ()
+{
+	local IFS=$'\n'
+	__gitcompappend "$1" "${2-}" "${3-$cur}" "${4- }"
+}
+
 # Generates completion reply from newline-separated possible completion words
 # by appending a space to all of them.
 # It accepts 1 to 4 arguments:
@@ -231,8 +243,8 @@ __gitcomp ()
 #    appended.
 __gitcomp_nl ()
 {
-	local IFS=$'\n'
-	__gitcompadd "$1" "${2-}" "${3-$cur}" "${4- }"
+	COMPREPLY=()
+	__gitcomp_nl_append "$@"
 }
 
 # Generates completion reply with compgen from newline-separated possible
@@ -673,7 +685,6 @@ __git_list_porcelain_commands ()
 		index-pack)       : plumbing;;
 		init-db)          : deprecated;;
 		local-fetch)      : plumbing;;
-		lost-found)       : infrequent;;
 		ls-files)         : plumbing;;
 		ls-remote)        : plumbing;;
 		ls-tree)          : plumbing;;
@@ -687,14 +698,12 @@ __git_list_porcelain_commands ()
 		pack-refs)        : plumbing;;
 		parse-remote)     : plumbing;;
 		patch-id)         : plumbing;;
-		peek-remote)      : plumbing;;
 		prune)            : plumbing;;
 		prune-packed)     : plumbing;;
 		quiltimport)      : import;;
 		read-tree)        : plumbing;;
 		receive-pack)     : plumbing;;
 		remote-*)         : transport;;
-		repo-config)      : deprecated;;
 		rerere)           : plumbing;;
 		rev-list)         : plumbing;;
 		rev-parse)        : plumbing;;
@@ -707,7 +716,6 @@ __git_list_porcelain_commands ()
 		ssh-*)            : transport;;
 		stripspace)       : plumbing;;
 		symbolic-ref)     : plumbing;;
-		tar-tree)         : deprecated;;
 		unpack-file)      : plumbing;;
 		unpack-objects)   : plumbing;;
 		update-index)     : plumbing;;
@@ -901,7 +909,7 @@ _git_add ()
 	esac
 
 	# XXX should we check for --update and --all options ?
-	__git_complete_index_file "--others --modified"
+	__git_complete_index_file "--others --modified --directory --no-empty-directory"
 }
 
 _git_archive ()
@@ -1063,7 +1071,7 @@ _git_clean ()
 	esac
 
 	# XXX should we check for -x option ?
-	__git_complete_index_file "--others"
+	__git_complete_index_file "--others --directory"
 }
 
 _git_clone ()
@@ -1188,7 +1196,7 @@ _git_diff ()
 	__git_complete_revlist_file
 }
 
-__git_mergetools_common="diffuse ecmerge emerge kdiff3 meld opendiff
+__git_mergetools_common="diffuse diffmerge ecmerge emerge kdiff3 meld opendiff
 			tkdiff vimdiff gvimdiff xxdiff araxis p4merge bc3 codecompare
 "
 
@@ -1491,6 +1499,12 @@ _git_mergetool ()
 
 _git_merge_base ()
 {
+	case "$cur" in
+	--*)
+		__gitcomp "--octopus --independent --is-ancestor --fork-point"
+		return
+		;;
+	esac
 	__gitcomp_nl "$(__git_refs)"
 }
 
@@ -1623,7 +1637,7 @@ _git_rebase ()
 			--preserve-merges --stat --no-stat
 			--committer-date-is-author-date --ignore-date
 			--ignore-whitespace --whitespace=
-			--autosquash
+			--autosquash --fork-point --no-fork-point
 			"
 
 		return
@@ -1833,6 +1847,7 @@ _git_config ()
 	branch.*)
 		local pfx="${cur%.*}." cur_="${cur#*.}"
 		__gitcomp_nl "$(__git_heads)" "$pfx" "$cur_" "."
+		__gitcomp_nl_append $'autosetupmerge\nautosetuprebase\n' "$pfx" "$cur_"
 		return
 		;;
 	guitool.*.*)
@@ -1875,6 +1890,7 @@ _git_config ()
 	remote.*)
 		local pfx="${cur%.*}." cur_="${cur#*.}"
 		__gitcomp_nl "$(__git_remotes)" "$pfx" "$cur_" "."
+		__gitcomp_nl_append "pushdefault" "$pfx" "$cur_"
 		return
 		;;
 	url.*.*)
@@ -1997,6 +2013,7 @@ _git_config ()
 		fetch.unpackLimit
 		format.attach
 		format.cc
+		format.coverLetter
 		format.headers
 		format.numbered
 		format.pretty
@@ -2580,7 +2597,7 @@ if [[ -n ${ZSH_VERSION-} ]]; then
 				--*=*|*.) ;;
 				*) c="$c " ;;
 				esac
-				array[$#array+1]="$c"
+				array[${#array[@]}+1]="$c"
 			done
 			compset -P '*[=:]'
 			compadd -Q -S '' -p "${2-}" -a -- array && _ret=0
diff --git a/plugins/gitfast/git-prompt.sh b/plugins/gitfast/git-prompt.sh
index a81ef5a48..54489080f 100644
--- a/plugins/gitfast/git-prompt.sh
+++ b/plugins/gitfast/git-prompt.sh
@@ -60,6 +60,7 @@
 # of values:
 #
 #     verbose       show number of commits ahead/behind (+/-) upstream
+#     name          if verbose, then also show the upstream abbrev name
 #     legacy        don't use the '--count' option available in recent
 #                   versions of git-rev-list
 #     git           always compare HEAD to @{upstream}
@@ -84,13 +85,17 @@
 # the colored output of "git status -sb" and are available only when
 # using __git_ps1 for PROMPT_COMMAND or precmd.
 
+# check whether printf supports -v
+__git_printf_supports_v=
+printf -v __git_printf_supports_v -- '%s' yes >/dev/null 2>&1
+
 # 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=""
+	local upstream=git legacy="" verbose="" name=""
 
 	svn_remote=()
 	# get some config options from git-config
@@ -106,7 +111,7 @@ __git_ps1_show_upstream ()
 			;;
 		svn-remote.*.url)
 			svn_remote[$((${#svn_remote[@]} + 1))]="$value"
-			svn_url_pattern+="\\|$value"
+			svn_url_pattern="$svn_url_pattern\\|$value"
 			upstream=svn+git # default upstream is SVN if available, else git
 			;;
 		esac
@@ -118,6 +123,7 @@ __git_ps1_show_upstream ()
 		git|svn) upstream="$option" ;;
 		verbose) verbose=1 ;;
 		legacy)  legacy=1  ;;
+		name)    name=1 ;;
 		esac
 	done
 
@@ -200,6 +206,9 @@ __git_ps1_show_upstream ()
 		*)	    # diverged from upstream
 			p=" u+${count#*	}-${count%	*}" ;;
 		esac
+		if [[ -n "$count" && -n "$name" ]]; then
+			p="$p $(git rev-parse --abbrev-ref "$upstream" 2>/dev/null)"
+		fi
 	fi
 
 }
@@ -250,6 +259,13 @@ __git_ps1_colorize_gitstring ()
 	r="$c_clear$r"
 }
 
+eread ()
+{
+	f="$1"
+	shift
+	test -r "$f" && read "$@" <"$f"
+}
+
 # __git_ps1 accepts 0 or 1 arguments (i.e., format string)
 # when called from PS1 using command substitution
 # in this mode it prints text to add to bash PS1 prompt (includes branch name)
@@ -312,9 +328,9 @@ __git_ps1 ()
 	local step=""
 	local total=""
 	if [ -d "$g/rebase-merge" ]; then
-		read b 2>/dev/null <"$g/rebase-merge/head-name"
-		read step 2>/dev/null <"$g/rebase-merge/msgnum"
-		read total 2>/dev/null <"$g/rebase-merge/end"
+		eread "$g/rebase-merge/head-name" b
+		eread "$g/rebase-merge/msgnum" step
+		eread "$g/rebase-merge/end" total
 		if [ -f "$g/rebase-merge/interactive" ]; then
 			r="|REBASE-i"
 		else
@@ -322,10 +338,10 @@ __git_ps1 ()
 		fi
 	else
 		if [ -d "$g/rebase-apply" ]; then
-			read step 2>/dev/null <"$g/rebase-apply/next"
-			read total 2>/dev/null <"$g/rebase-apply/last"
+			eread "$g/rebase-apply/next" step
+			eread "$g/rebase-apply/last" total
 			if [ -f "$g/rebase-apply/rebasing" ]; then
-				read b 2>/dev/null <"$g/rebase-apply/head-name"
+				eread "$g/rebase-apply/head-name" b
 				r="|REBASE"
 			elif [ -f "$g/rebase-apply/applying" ]; then
 				r="|AM"
@@ -349,7 +365,7 @@ __git_ps1 ()
 			b="$(git symbolic-ref HEAD 2>/dev/null)"
 		else
 			local head=""
-			if ! read head 2>/dev/null <"$g/HEAD"; then
+			if ! eread "$g/HEAD" head; then
 				if [ $pcmode = yes ]; then
 					PS1="$ps1pc_start$ps1pc_end"
 				fi
@@ -433,7 +449,7 @@ __git_ps1 ()
 	local gitstring="$c${b##refs/heads/}${f:+$z$f}$r$p"
 
 	if [ $pcmode = yes ]; then
-		if [[ -n ${ZSH_VERSION-} ]]; then
+		if [ "${__git_printf_supports_v-}" != yes ]; then
 			gitstring=$(printf -- "$printf_format" "$gitstring")
 		else
 			printf -v gitstring -- "$printf_format" "$gitstring"