From 23f2b4503c9d7697e382fed550d3bf846b81dd5c Mon Sep 17 00:00:00 2001
From: Peter Stephenson <pws@users.sourceforge.net>
Date: Fri, 19 Sep 2008 12:58:46 +0000
Subject: users/13252 and elsewhere: Frank Terbeck plus tweaks: add VCS_Info
 function system

---
 Functions/VCS_Info/.distfiles                      |  15 +++
 Functions/VCS_Info/Backends/.distfiles             |  24 +++++
 Functions/VCS_Info/Backends/VCS_INFO_detect_bzr    |  12 +++
 Functions/VCS_Info/Backends/VCS_INFO_detect_cdv    |  12 +++
 Functions/VCS_Info/Backends/VCS_INFO_detect_cvs    |  11 +++
 Functions/VCS_Info/Backends/VCS_INFO_detect_darcs  |  12 +++
 Functions/VCS_Info/Backends/VCS_INFO_detect_git    |  15 +++
 Functions/VCS_Info/Backends/VCS_INFO_detect_hg     |  12 +++
 Functions/VCS_Info/Backends/VCS_INFO_detect_mtn    |  12 +++
 Functions/VCS_Info/Backends/VCS_INFO_detect_p4     |   9 ++
 Functions/VCS_Info/Backends/VCS_INFO_detect_svk    |  40 ++++++++
 Functions/VCS_Info/Backends/VCS_INFO_detect_svn    |  11 +++
 Functions/VCS_Info/Backends/VCS_INFO_detect_tla    |  11 +++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_bzr  |  26 ++++++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_cdv  |  11 +++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_cvs  |  18 ++++
 .../VCS_Info/Backends/VCS_INFO_get_data_darcs      |  11 +++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_git  | 104 +++++++++++++++++++++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_hg   |  12 +++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_mtn  |  12 +++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_p4   |  14 +++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_svk  |  13 +++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_svn  |  28 ++++++
 Functions/VCS_Info/Backends/VCS_INFO_get_data_tla  |  13 +++
 Functions/VCS_Info/VCS_INFO_adjust                 |   8 ++
 Functions/VCS_Info/VCS_INFO_bydir_detect           |  25 +++++
 Functions/VCS_Info/VCS_INFO_check_com              |   8 ++
 Functions/VCS_Info/VCS_INFO_formats                |  23 +++++
 Functions/VCS_Info/VCS_INFO_maxexports             |  13 +++
 Functions/VCS_Info/VCS_INFO_nvcsformats            |  15 +++
 Functions/VCS_Info/VCS_INFO_realpath               |  16 ++++
 Functions/VCS_Info/VCS_INFO_reposub                |  13 +++
 Functions/VCS_Info/VCS_INFO_set                    |  32 +++++++
 Functions/VCS_Info/vcs_info                        |  90 ++++++++++++++++++
 Functions/VCS_Info/vcs_info_lastmsg                |  18 ++++
 Functions/VCS_Info/vcs_info_printsys               |  37 ++++++++
 Functions/VCS_Info/vcs_info_setsys                 |  22 +++++
 37 files changed, 778 insertions(+)
 create mode 100644 Functions/VCS_Info/.distfiles
 create mode 100644 Functions/VCS_Info/Backends/.distfiles
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_bzr
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_cdv
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_cvs
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_darcs
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_git
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_hg
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_mtn
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_p4
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_svk
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_svn
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_detect_tla
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_bzr
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_cdv
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_cvs
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_darcs
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_git
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_hg
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_mtn
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_p4
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_svk
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_svn
 create mode 100644 Functions/VCS_Info/Backends/VCS_INFO_get_data_tla
 create mode 100644 Functions/VCS_Info/VCS_INFO_adjust
 create mode 100644 Functions/VCS_Info/VCS_INFO_bydir_detect
 create mode 100644 Functions/VCS_Info/VCS_INFO_check_com
 create mode 100644 Functions/VCS_Info/VCS_INFO_formats
 create mode 100644 Functions/VCS_Info/VCS_INFO_maxexports
 create mode 100644 Functions/VCS_Info/VCS_INFO_nvcsformats
 create mode 100644 Functions/VCS_Info/VCS_INFO_realpath
 create mode 100644 Functions/VCS_Info/VCS_INFO_reposub
 create mode 100644 Functions/VCS_Info/VCS_INFO_set
 create mode 100644 Functions/VCS_Info/vcs_info
 create mode 100644 Functions/VCS_Info/vcs_info_lastmsg
 create mode 100644 Functions/VCS_Info/vcs_info_printsys
 create mode 100644 Functions/VCS_Info/vcs_info_setsys

(limited to 'Functions')

diff --git a/Functions/VCS_Info/.distfiles b/Functions/VCS_Info/.distfiles
new file mode 100644
index 000000000..44e52905b
--- /dev/null
+++ b/Functions/VCS_Info/.distfiles
@@ -0,0 +1,15 @@
+DISTFILES_SRC='
+vcs_info
+VCS_INFO_adjust
+VCS_INFO_bydir_detect
+VCS_INFO_check_com
+VCS_INFO_formats
+vcs_info_lastmsg
+VCS_INFO_maxexports
+VCS_INFO_nvcsformats
+vcs_info_printsys
+VCS_INFO_realpath
+VCS_INFO_reposub
+VCS_INFO_set
+vcs_info_setsys
+'
diff --git a/Functions/VCS_Info/Backends/.distfiles b/Functions/VCS_Info/Backends/.distfiles
new file mode 100644
index 000000000..e39e9c71c
--- /dev/null
+++ b/Functions/VCS_Info/Backends/.distfiles
@@ -0,0 +1,24 @@
+DISTFILES_SRC='
+VCS_INFO_detect_bzr
+VCS_INFO_detect_cdv
+VCS_INFO_detect_cvs
+VCS_INFO_detect_darcs
+VCS_INFO_detect_git
+VCS_INFO_detect_hg
+VCS_INFO_detect_mtn
+VCS_INFO_detect_p4
+VCS_INFO_detect_svk
+VCS_INFO_detect_svn
+VCS_INFO_detect_tla
+VCS_INFO_get_data_bzr
+VCS_INFO_get_data_cdv
+VCS_INFO_get_data_cvs
+VCS_INFO_get_data_darcs
+VCS_INFO_get_data_git
+VCS_INFO_get_data_hg
+VCS_INFO_get_data_mtn
+VCS_INFO_get_data_p4
+VCS_INFO_get_data_svk
+VCS_INFO_get_data_svn
+VCS_INFO_get_data_tla
+'
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_bzr b/Functions/VCS_Info/Backends/VCS_INFO_detect_bzr
new file mode 100644
index 000000000..0b12fb54f
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_bzr
@@ -0,0 +1,12 @@
+## vim:ft=zsh
+## bazaar support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && return 1
+
+VCS_INFO_check_com bzr || return 1
+vcs_comm[detect_need_file]=branch/format
+VCS_INFO_bydir_detect '.bzr'
+return $?
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_cdv b/Functions/VCS_Info/Backends/VCS_INFO_detect_cdv
new file mode 100644
index 000000000..356bd069c
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_cdv
@@ -0,0 +1,12 @@
+## vim:ft=zsh
+## codeville support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && return 1
+
+VCS_INFO_check_com cdv || return 1
+vcs_comm[detect_need_file]=format
+VCS_INFO_bydir_detect '.cdv'
+return $?
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_cvs b/Functions/VCS_Info/Backends/VCS_INFO_detect_cvs
new file mode 100644
index 000000000..61b43cc43
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_cvs
@@ -0,0 +1,11 @@
+## vim:ft=zsh
+## cvs support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && return 1
+
+VCS_INFO_check_com svn || return 1
+[[ -d "./CVS" ]] && [[ -r "./CVS/Repository" ]] && return 0
+return 1
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_darcs b/Functions/VCS_Info/Backends/VCS_INFO_detect_darcs
new file mode 100644
index 000000000..942d8afbb
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_darcs
@@ -0,0 +1,12 @@
+## vim:ft=zsh
+## darcs support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && return 1
+
+VCS_INFO_check_com darcs || return 1
+vcs_comm[detect_need_file]=format
+VCS_INFO_bydir_detect '_darcs'
+return $?
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_git b/Functions/VCS_Info/Backends/VCS_INFO_detect_git
new file mode 100644
index 000000000..627b8cf23
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_git
@@ -0,0 +1,15 @@
+## vim:ft=zsh
+## git support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && { print -l git-p4 git-svn; return 0 }
+
+if VCS_INFO_check_com git && git rev-parse --is-inside-work-tree &> /dev/null ; then
+    vcs_comm[gitdir]="$(git rev-parse --git-dir 2> /dev/null)" || return 1
+    if   [[ -d ${vcs_comm[gitdir]}/svn ]]             ; then vcs_comm[overwrite_name]='git-svn'
+    elif [[ -d ${vcs_comm[gitdir]}/refs/remotes/p4 ]] ; then vcs_comm[overwrite_name]='git-p4' ; fi
+    return 0
+fi
+return 1
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_hg b/Functions/VCS_Info/Backends/VCS_INFO_detect_hg
new file mode 100644
index 000000000..8a6c0c8a6
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_hg
@@ -0,0 +1,12 @@
+## vim:ft=zsh
+## mercurial support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && return 1
+
+VCS_INFO_check_com hg || return 1
+vcs_comm[detect_need_file]=branch
+VCS_INFO_bydir_detect '.hg'
+return $?
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_mtn b/Functions/VCS_Info/Backends/VCS_INFO_detect_mtn
new file mode 100644
index 000000000..cb0fec1bd
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_mtn
@@ -0,0 +1,12 @@
+## vim:ft=zsh
+## monotone support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && return 1
+
+VCS_INFO_check_com mtn || return 1
+vcs_comm[detect_need_file]=revision
+VCS_INFO_bydir_detect '_MTN'
+return $?
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_p4 b/Functions/VCS_Info/Backends/VCS_INFO_detect_p4
new file mode 100644
index 000000000..3cd649a0d
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_p4
@@ -0,0 +1,9 @@
+## vim:ft=zsh
+## perforce support by: Phil Pennock
+## Distributed under the same BSD-ish license as zsh itself.
+
+[[ -n ${P4CONFIG} ]] || return 1
+VCS_INFO_check_com p4 || return 1
+vcs_comm[detect_need_file]="${P4CONFIG}"
+VCS_INFO_bydir_detect .
+return $?
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_svk b/Functions/VCS_Info/Backends/VCS_INFO_detect_svk
new file mode 100644
index 000000000..476b59101
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_svk
@@ -0,0 +1,40 @@
+## vim:ft=zsh
+## svk support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && return 1
+
+# This detection function is a bit different from the others.
+# We need to read svk's config file to detect a svk repository
+# in the first place. Therefore, we'll just proceed and read
+# the other information, too. This is more then any of the
+# other detections do but this takes only one file open for
+# svk at most. VCS_INFO_get_data_svk() gets simpler, too. :-)
+
+setopt localoptions noksharrays extendedglob
+local -i fhash
+fhash=0
+
+VCS_INFO_check_com svk || return 1
+[[ -f ~/.svk/config ]] || return 1
+
+while IFS= read -r line ; do
+    if [[ -n ${vcs_comm[basedir]} ]] ; then
+        line=${line## ##}
+        [[ ${line} == depotpath:* ]] && vcs_comm[branch]=${line##*/}
+        [[ ${line} == revision:* ]] && vcs_comm[revision]=${line##*[[:space:]]##}
+        [[ -n ${vcs_comm[branch]} ]] && [[ -n ${vcs_comm[revision]} ]] && break
+        continue
+    fi
+    (( fhash > 0 )) && [[ ${line} == '  '[^[:space:]]*:* ]] && break
+    [[ ${line} == '  hash:'* ]] && fhash=1 && continue
+    (( fhash == 0 )) && continue
+    [[ ${PWD}/ == ${${line## ##}%:*}/* ]] && vcs_comm[basedir]=${${line## ##}%:*}
+done < ~/.svk/config
+
+[[ -n ${vcs_comm[basedir]} ]]  && \
+[[ -n ${vcs_comm[branch]} ]]   && \
+[[ -n ${vcs_comm[revision]} ]] && return 0
+return 1
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_svn b/Functions/VCS_Info/Backends/VCS_INFO_detect_svn
new file mode 100644
index 000000000..f22c34ee5
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_svn
@@ -0,0 +1,11 @@
+## vim:ft=zsh
+## subversion support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && return 1
+
+VCS_INFO_check_com svn || return 1
+[[ -d ".svn" ]] && return 0
+return 1
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_detect_tla b/Functions/VCS_Info/Backends/VCS_INFO_detect_tla
new file mode 100644
index 000000000..3b2042897
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_detect_tla
@@ -0,0 +1,11 @@
+## vim:ft=zsh
+## gnu arch support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ $1 == '--flavours' ]] && return 1
+
+VCS_INFO_check_com tla || return 1
+vcs_comm[basedir]="$(tla tree-root 2> /dev/null)" && return 0
+return 1
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_bzr b/Functions/VCS_Info/Backends/VCS_INFO_get_data_bzr
new file mode 100644
index 000000000..995b2ad2d
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_bzr
@@ -0,0 +1,26 @@
+## vim:ft=zsh
+## bazaar support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions noksharrays extendedglob NO_shwordsplit
+local bzrbase bzrbr
+local -a bzrinfo
+
+if zstyle -t ":vcs_info:${vcs}:${usercontext}:${rrn}" "use-simple" ; then
+    bzrbase=${vcs_comm[basedir]}
+    bzrinfo[2]=${bzrbase:t}
+    if [[ -f ${bzrbase}/.bzr/branch/last-revision ]] ; then
+        bzrinfo[1]=$(< ${bzrbase}/.bzr/branch/last-revision)
+        bzrinfo[1]=${${bzrinfo[1]}%% *}
+    fi
+else
+    bzrbase=${${(M)${(f)"$( bzr info )"}:# ##branch\ root:*}/*: ##/}
+    bzrinfo=( ${${${(M)${(f)"$( bzr version-info )"}:#(#s)(revno|branch-nick)*}/*: /}/*\//} )
+    bzrbase="$(VCS_INFO_realpath ${bzrbase})"
+fi
+
+rrn=${bzrbase:t}
+zstyle -s ":vcs_info:${vcs}:${usercontext}:${rrn}" branchformat bzrbr || bzrbr="%b:%r"
+zformat -f bzrbr "${bzrbr}" "b:${bzrinfo[2]}" "r:${bzrinfo[1]}"
+VCS_INFO_formats '' "${bzrbr}" "${bzrbase}"
+return 0
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_cdv b/Functions/VCS_Info/Backends/VCS_INFO_get_data_cdv
new file mode 100644
index 000000000..be8b4d837
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_cdv
@@ -0,0 +1,11 @@
+## vim:ft=zsh
+## codeville support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+local cdvbase
+
+cdvbase=${vcs_comm[basedir]}
+rrn=${cdvbase:t}
+VCS_INFO_formats '' "${cdvbase:t}" "${cdvbase}"
+return 0
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_cvs b/Functions/VCS_Info/Backends/VCS_INFO_get_data_cvs
new file mode 100644
index 000000000..fa1ceca02
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_cvs
@@ -0,0 +1,18 @@
+## vim:ft=zsh
+## cvs support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+local cvsbranch cvsbase
+
+cvsbase="."
+while [[ -d "${cvsbase}/../CVS" ]]; do
+    cvsbase="${cvsbase}/.."
+done
+cvsbase="$(VCS_INFO_realpath ${cvsbase})"
+cvsbranch=$(< ./CVS/Repository)
+rrn=${cvsbase:t}
+cvsbranch=${cvsbranch##${rrn}/}
+[[ -z ${cvsbranch} ]] && cvsbranch=${rrn}
+VCS_INFO_formats '' "${cvsbranch}" "${cvsbase}"
+return 0
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_darcs b/Functions/VCS_Info/Backends/VCS_INFO_get_data_darcs
new file mode 100644
index 000000000..9fd3554ca
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_darcs
@@ -0,0 +1,11 @@
+## vim:ft=zsh
+## darcs support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+local darcsbase
+
+darcsbase=${vcs_comm[basedir]}
+rrn=${darcsbase:t}
+VCS_INFO_formats '' "${darcsbase:t}" "${darcsbase}"
+return 0
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_git b/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
new file mode 100644
index 000000000..0d8a4f915
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_git
@@ -0,0 +1,104 @@
+## vim:ft=zsh
+## git support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions extendedglob NO_shwordsplit
+local gitdir gitbase gitbranch gitaction
+
+VCS_INFO_git_getaction () {
+    local gitaction='' gitdir=$1
+    local tmp
+
+    for tmp in "${gitdir}/rebase-apply" \
+               "${gitdir}/rebase"       \
+               "${gitdir}/../.dotest" ; do
+        if [[ -d ${tmp} ]] ; then
+            if   [[ -f "${tmp}/rebasing" ]] ; then
+                gitaction="rebase"
+            elif [[ -f "${tmp}/applying" ]] ; then
+                gitaction="am"
+            else
+                gitaction="am/rebase"
+            fi
+            printf '%s' ${gitaction}
+            return 0
+        fi
+    done
+
+    for tmp in "${gitdir}/rebase-merge/interactive" \
+               "${gitdir}/.dotest-merge/interactive" ; do
+        if [[ -f "${tmp}" ]] ; then
+            printf '%s' "rebase-i"
+            return 0
+        fi
+    done
+
+    for tmp in "${gitdir}/rebase-merge" \
+               "${gitdir}/.dotest-merge" ; do
+        if [[ -d "${tmp}" ]] ; then
+            printf '%s' "rebase-m"
+            return 0
+        fi
+    done
+
+    if [[ -f "${gitdir}/MERGE_HEAD" ]] ; then
+        printf '%s' "merge"
+        return 0
+    fi
+
+    if [[ -f "${gitdir}/BISECT_LOG" ]] ; then
+        printf '%s' "bisect"
+        return 0
+    fi
+    return 1
+}
+
+VCS_INFO_git_getbranch () {
+    local gitbranch gitdir=$1
+    local gitsymref='git symbolic-ref HEAD'
+
+    if    [[ -d "${gitdir}/rebase-apply" ]] \
+       || [[ -d "${gitdir}/rebase" ]]       \
+       || [[ -d "${gitdir}/../.dotest" ]]   \
+       || [[ -f "${gitdir}/MERGE_HEAD" ]] ; then
+        gitbranch="$(${(z)gitsymref} 2> /dev/null)"
+        [[ -z ${gitbranch} ]] && [[ -r ${gitdir}/rebase-apply/head-name ]] \
+            && gitbranch="$(< ${gitdir}/rebase-apply/head-name)"
+
+    elif   [[ -f "${gitdir}/rebase-merge/interactive" ]] \
+        || [[ -d "${gitdir}/rebase-merge" ]] ; then
+        gitbranch="$(< ${gitdir}/rebase-merge/head-name)"
+
+    elif   [[ -f "${gitdir}/.dotest-merge/interactive" ]] \
+        || [[ -d "${gitdir}/.dotest-merge" ]] ; then
+        gitbranch="$(< ${gitdir}/.dotest-merge/head-name)"
+
+    else
+        gitbranch="$(${(z)gitsymref} 2> /dev/null)"
+
+        if [[ $? -ne 0 ]] ; then
+            gitbranch="$(git describe --exact-match HEAD 2>/dev/null)"
+
+            if [[ $? -ne 0 ]] ; then
+                gitbranch="${${"$(< $gitdir/HEAD)"}[1,7]}..."
+            fi
+        fi
+    fi
+
+    printf '%s' "${gitbranch##refs/heads/}"
+    return 0
+}
+
+gitdir=${vcs_comm[gitdir]}
+gitbranch="$(VCS_INFO_git_getbranch ${gitdir})"
+
+if [[ -z ${gitdir} ]] || [[ -z ${gitbranch} ]] ; then
+    return 1
+fi
+
+VCS_INFO_adjust
+gitaction="$(VCS_INFO_git_getaction ${gitdir})"
+gitbase=${PWD%/${$( git rev-parse --show-prefix )%/##}}
+rrn=${gitbase:t}
+VCS_INFO_formats "${gitaction}" "${gitbranch}" "${gitbase}"
+return 0
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_hg b/Functions/VCS_Info/Backends/VCS_INFO_get_data_hg
new file mode 100644
index 000000000..af9d85c5f
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_hg
@@ -0,0 +1,12 @@
+## vim:ft=zsh
+## mercurial support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+local hgbranch hgbase
+
+hgbase=${vcs_comm[basedir]}
+rrn=${hgbase:t}
+hgbranch=$(< ${hgbase}/.hg/branch)
+VCS_INFO_formats '' "${hgbranch}" "${hgbase}"
+return 0
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_mtn b/Functions/VCS_Info/Backends/VCS_INFO_get_data_mtn
new file mode 100644
index 000000000..5974df87a
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_mtn
@@ -0,0 +1,12 @@
+## vim:ft=zsh
+## monotone support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions extendedglob NO_shwordsplit
+local mtnbranch mtnbase
+
+mtnbase=${vcs_comm[basedir]}
+rrn=${mtnbase:t}
+mtnbranch=${${(M)${(f)"$( mtn status )"}:#(#s)Current branch:*}/*: /}
+VCS_INFO_formats '' "${mtnbranch}" "${mtnbase}"
+return 0
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_p4 b/Functions/VCS_Info/Backends/VCS_INFO_get_data_p4
new file mode 100644
index 000000000..82ca6ef1c
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_p4
@@ -0,0 +1,14 @@
+## vim:ft=zsh
+## perforce support by: Phil Pennock
+## Distributed under the same BSD-ish license as zsh itself.
+
+# XXX: This soooo needs to be cached
+setopt localoptions extendedglob
+local p4base a b
+local -A p4info
+
+p4 info | while IFS=: read a b; do p4info[${a// /_}]="${b## #}"; done
+p4base=${vcs_comm[basedir]}
+
+# We'll use the client name as the branch; close enough
+VCS_INFO_formats '' "${p4info[Client_name]}" "${p4base}"
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_svk b/Functions/VCS_Info/Backends/VCS_INFO_get_data_svk
new file mode 100644
index 000000000..fa9548c03
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_svk
@@ -0,0 +1,13 @@
+## vim:ft=zsh
+## svk support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+local svkbranch svkbase
+
+svkbase=${vcs_comm[basedir]}
+rrn=${svkbase:t}
+zstyle -s ":vcs_info:${vcs}:${usercontext}:${rrn}" branchformat svkbranch || svkbranch="%b:%r"
+zformat -f svkbranch "${svkbranch}" "b:${vcs_comm[branch]}" "r:${vcs_comm[revision]}"
+VCS_INFO_formats '' "${svkbranch}" "${svkbase}"
+return 0
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_svn b/Functions/VCS_Info/Backends/VCS_INFO_get_data_svn
new file mode 100644
index 000000000..7a23419b0
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_svn
@@ -0,0 +1,28 @@
+## vim:ft=zsh
+## subversion support by:
+##  + Frank Terbeck <ft@bewatermyfriend.org>
+##  + Phil Pennock
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions noksharrays extendedglob NO_shwordsplit
+local svnbase svnbranch a b rrn
+local -A svninfo parentinfo
+
+svnbase=".";
+svninfo=()
+svn info --non-interactive | while IFS=: read a b; do svninfo[${a// /_}]="${b## #}"; done
+while [[ -d "${svnbase}/../.svn" ]]; do
+    parentinfo=()
+    svn info --non-interactive "${svnbase}/.." | while IFS=: read a b; do parentinfo[${a// /_}]="${b## #}"; done
+    [[ ${parentinfo[Repository_UUID]} != ${svninfo[Repository_UUID]} ]] && break
+    svninfo=(${(kv)parentinfo})
+    svnbase="${svnbase}/.."
+done
+
+svnbase="$(VCS_INFO_realpath ${svnbase})"
+
+rrn=${svnbase:t}
+zstyle -s ":vcs_info:${vcs}:${usercontext}:${rrn}" branchformat svnbranch || svnbranch="%b:%r"
+zformat -f svnbranch "${svnbranch}" "b:${svninfo[URL]##*/}" "r:${svninfo[Revision]}"
+VCS_INFO_formats '' "${svnbranch}" "${svnbase}"
+return 0
diff --git a/Functions/VCS_Info/Backends/VCS_INFO_get_data_tla b/Functions/VCS_Info/Backends/VCS_INFO_get_data_tla
new file mode 100644
index 000000000..e1921725f
--- /dev/null
+++ b/Functions/VCS_Info/Backends/VCS_INFO_get_data_tla
@@ -0,0 +1,13 @@
+## vim:ft=zsh
+## gnu arch support by: Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions extendedglob NO_shwordsplit
+local tlabase tlabranch
+
+tlabase="$(VCS_INFO_realpath ${vcs_comm[basedir]})"
+rrn=${tlabase:t}
+# tree-id gives us something like 'foo@example.com/demo--1.0--patch-4', so:
+tlabranch=${${"$( tla tree-id )"}/*\//}
+VCS_INFO_formats '' "${tlabranch}" "${tlabase}"
+return 0
diff --git a/Functions/VCS_Info/VCS_INFO_adjust b/Functions/VCS_Info/VCS_INFO_adjust
new file mode 100644
index 000000000..5ee2a4940
--- /dev/null
+++ b/Functions/VCS_Info/VCS_INFO_adjust
@@ -0,0 +1,8 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+[[ -n ${vcs_comm[overwrite_name]} ]] && vcs=${vcs_comm[overwrite_name]}
+return 0
diff --git a/Functions/VCS_Info/VCS_INFO_bydir_detect b/Functions/VCS_Info/VCS_INFO_bydir_detect
new file mode 100644
index 000000000..aff59f300
--- /dev/null
+++ b/Functions/VCS_Info/VCS_INFO_bydir_detect
@@ -0,0 +1,25 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+local dirname=$1
+local basedir="." realbasedir
+
+realbasedir="$(VCS_INFO_realpath ${basedir})"
+while [[ ${realbasedir} != '/' ]]; do
+    if [[ -n ${vcs_comm[detect_need_file]} ]] ; then
+        [[ -d ${basedir}/${dirname} ]] && \
+        [[ -f ${basedir}/${dirname}/${vcs_comm[detect_need_file]} ]] && \
+            break
+    else
+        [[ -d ${basedir}/${dirname} ]] && break
+    fi
+
+    basedir=${basedir}/..
+    realbasedir="$(VCS_INFO_realpath ${basedir})"
+done
+
+[[ ${realbasedir} == "/" ]] && return 1
+vcs_comm[basedir]=${realbasedir}
+return 0
diff --git a/Functions/VCS_Info/VCS_INFO_check_com b/Functions/VCS_Info/VCS_INFO_check_com
new file mode 100644
index 000000000..6d65360d5
--- /dev/null
+++ b/Functions/VCS_Info/VCS_INFO_check_com
@@ -0,0 +1,8 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+(( ${+commands[$1]} )) && [[ -x ${commands[$1]} ]] && return 0
+return 1
diff --git a/Functions/VCS_Info/VCS_INFO_formats b/Functions/VCS_Info/VCS_INFO_formats
new file mode 100644
index 000000000..346833539
--- /dev/null
+++ b/Functions/VCS_Info/VCS_INFO_formats
@@ -0,0 +1,23 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions noksharrays NO_shwordsplit
+local action=$1 branch=$2 base=$3
+local msg
+local -i i j
+
+if [[ -n ${action} ]] ; then
+    zstyle -a ":vcs_info:${vcs}:${usercontext}:${rrn}" actionformats msgs
+    (( ${#msgs} < 1 )) && msgs[1]=' (%s)-[%b|%a]-'
+else
+    zstyle -a ":vcs_info:${vcs}:${usercontext}:${rrn}" formats msgs
+    (( ${#msgs} < 1 )) && msgs[1]=' (%s)-[%b]-'
+fi
+
+(( ${#msgs} > maxexports )) && msgs[$(( maxexports + 1 )),-1]=()
+for i in {1..${#msgs}} ; do
+    zformat -f msg ${msgs[$i]} a:${action} b:${branch} s:${vcs} r:${base:t} R:${base} S:"$(VCS_INFO_reposub ${base})"
+    msgs[$i]=${msg}
+done
+return 0
diff --git a/Functions/VCS_Info/VCS_INFO_maxexports b/Functions/VCS_Info/VCS_INFO_maxexports
new file mode 100644
index 000000000..ea952517f
--- /dev/null
+++ b/Functions/VCS_Info/VCS_INFO_maxexports
@@ -0,0 +1,13 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+
+zstyle -s ":vcs_info:${vcs}:${usercontext}:${rrn}" "max-exports" maxexports || maxexports=2
+if [[ ${maxexports} != <-> ]] || (( maxexports < 1 )); then
+    printf 'vcs_info(): expecting numeric arg >= 1 for max-exports (got %s).\n' ${maxexports}
+    printf 'Defaulting to 2.\n'
+    maxexports=2
+fi
+return 0
diff --git a/Functions/VCS_Info/VCS_INFO_nvcsformats b/Functions/VCS_Info/VCS_INFO_nvcsformats
new file mode 100644
index 000000000..581aa5a97
--- /dev/null
+++ b/Functions/VCS_Info/VCS_INFO_nvcsformats
@@ -0,0 +1,15 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions noksharrays NO_shwordsplit
+local c v rr
+
+if [[ $1 == '-preinit-' ]] ; then
+    c='default'
+    v='-preinit-'
+    rr='-all-'
+fi
+zstyle -a ":vcs_info:${v:-$vcs}:${c:-$usercontext}:${rrn:-$rr}" nvcsformats msgs
+(( ${#msgs} > maxexports )) && msgs[${maxexports},-1]=()
+return 0
diff --git a/Functions/VCS_Info/VCS_INFO_realpath b/Functions/VCS_Info/VCS_INFO_realpath
new file mode 100644
index 000000000..481d5e98f
--- /dev/null
+++ b/Functions/VCS_Info/VCS_INFO_realpath
@@ -0,0 +1,16 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+# a portable 'readlink -f'
+# forcing a subshell, to ensure chpwd() is not removed
+# from the calling shell (if VCS_INFO_realpath() is called
+# manually).
+
+setopt localoptions NO_shwordsplit
+
+(
+    (( ${+functions[chpwd]} )) && unfunction chpwd
+    setopt chaselinks
+    cd $1 2>/dev/null && pwd
+)
diff --git a/Functions/VCS_Info/VCS_INFO_reposub b/Functions/VCS_Info/VCS_INFO_reposub
new file mode 100644
index 000000000..0fab863f1
--- /dev/null
+++ b/Functions/VCS_Info/VCS_INFO_reposub
@@ -0,0 +1,13 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions extendedglob NO_shwordsplit
+local base=${1%%/##}
+
+[[ ${PWD} == ${base}/* ]] || {
+    printf '.'
+    return 1
+}
+printf '%s' ${PWD#$base/}
+return 0
diff --git a/Functions/VCS_Info/VCS_INFO_set b/Functions/VCS_Info/VCS_INFO_set
new file mode 100644
index 000000000..a2b838cdb
--- /dev/null
+++ b/Functions/VCS_Info/VCS_INFO_set
@@ -0,0 +1,32 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions noksharrays NO_shwordsplit
+local -i i j
+
+if [[ $1 == '--clear' ]] ; then
+    for i in {0..9} ; do
+        unset vcs_info_msg_${i}_
+    done
+fi
+if [[ $1 == '--nvcs' ]] ; then
+    [[ $2 == '-preinit-' ]] && (( maxexports == 0 )) && (( maxexports = 1 ))
+    for i in {0..$((maxexports - 1))} ; do
+        typeset -gx vcs_info_msg_${i}_=
+    done
+    VCS_INFO_nvcsformats $2
+fi
+
+(( ${#msgs} - 1 < 0 )) && return 0
+for i in {0..$(( ${#msgs} - 1 ))} ; do
+    (( j = i + 1 ))
+    typeset -gx vcs_info_msg_${i}_=${msgs[$j]}
+done
+
+if (( i < maxexports )) ; then
+    for j in {$(( i + 1 ))..${maxexports}} ; do
+        [[ -n ${(P)${:-vcs_info_msg_${j}_}} ]] && typeset -gx vcs_info_msg_${j}_=
+    done
+fi
+return 0
diff --git a/Functions/VCS_Info/vcs_info b/Functions/VCS_Info/vcs_info
new file mode 100644
index 000000000..9a4d2489e
--- /dev/null
+++ b/Functions/VCS_Info/vcs_info
@@ -0,0 +1,90 @@
+## vim:ft=zsh:foldmethod=marker
+##
+## vcs_info - provide version control information
+##
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+##
+## This file and all corresponding files in Functions/VCS_Info/ are
+## distributed under the same BSD-ish license as zsh itself.
+##
+
+setopt localoptions noksharrays extendedglob NO_shwordsplit
+local file func sys
+local -a static_functions
+
+static_functions=(
+    VCS_INFO_adjust
+    VCS_INFO_bydir_detect
+    VCS_INFO_check_com
+    VCS_INFO_formats
+    VCS_INFO_maxexports
+    VCS_INFO_nvcsformats
+    VCS_INFO_realpath
+    VCS_INFO_reposub
+    VCS_INFO_set
+
+    vcs_info_lastmsg
+    vcs_info_printsys
+    vcs_info_setsys
+)
+
+for func in ${static_functions} ; do
+    autoload -Uz ${func}
+done
+
+VCS_INFO_set --nvcs '-preinit-'
+vcs_info_setsys
+
+# and now, finally create the real vcs_info function
+vcs_info () {
+    setopt localoptions noksharrays extendedglob
+    local -i found
+    local -a enabled disabled
+    local -x usercontext vcs rrn
+    local -ix maxexports
+    local -ax msgs
+    local -Ax vcs_comm
+
+    vcs='-init-'; rrn='-all-'
+    usercontext=${1:-default}
+
+    zstyle -a ":vcs_info:${vcs}:${usercontext}:${rrn}" "enable" enabled
+    (( ${#enabled} == 0 )) && enabled=( all )
+
+    if [[ -n ${(M)enabled:#(#i)none} ]] ; then
+        [[ -n ${vcs_info_msg_0_} ]] && VCS_INFO_set --clear
+        return 0
+    fi
+
+    if [[ -n ${(M)enabled:#(#i)all} ]] ; then
+        enabled=( ${VCS_INFO_backends} )
+        zstyle -a ":vcs_info:${vcs}:${usercontext}:${rrn}" "disable" disabled
+    fi
+
+    VCS_INFO_maxexports
+
+    (( found = 0 ))
+    for vcs in ${enabled} ; do
+        [[ -n ${(M)disabled:#${vcs}} ]] && continue
+        if (( ${+functions[VCS_INFO_detect_${vcs}]} == 0 )) ; then
+            printf 'vcs_info: configured unknown backend: '\''%s'\''\n' ${vcs}
+            printf 'vcs_info: use '\''vcs_info_printsys'\'' to find supported systems.\n'
+            continue
+        fi
+        vcs_comm=()
+        VCS_INFO_detect_${vcs} && (( found = 1 )) && break
+    done
+
+    (( found == 0 )) && {
+        VCS_INFO_set --nvcs
+        return 0
+    }
+
+    VCS_INFO_get_data_${vcs} || {
+        VCS_INFO_set --nvcs
+        return 1
+    }
+
+    VCS_INFO_set
+    return 0
+}
diff --git a/Functions/VCS_Info/vcs_info_lastmsg b/Functions/VCS_Info/vcs_info_lastmsg
new file mode 100644
index 000000000..fe99d5999
--- /dev/null
+++ b/Functions/VCS_Info/vcs_info_lastmsg
@@ -0,0 +1,18 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions NO_shwordsplit
+local -i i
+local -ix maxexports
+
+VCS_INFO_maxexports
+for i in {0..$((maxexports - 1))} ; do
+    printf '$vcs_info_msg_%d_: "' $i
+    if zstyle -T ':vcs_info:formats:command:-all-' use-prompt-escapes ; then
+        print -nP ${(P)${:-vcs_info_msg_${i}_}}
+    else
+        print -n ${(P)${:-vcs_info_msg_${i}_}}
+    fi
+    printf '"\n'
+done
diff --git a/Functions/VCS_Info/vcs_info_printsys b/Functions/VCS_Info/vcs_info_printsys
new file mode 100644
index 000000000..d84682296
--- /dev/null
+++ b/Functions/VCS_Info/vcs_info_printsys
@@ -0,0 +1,37 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions noksharrays extendedglob NO_shwordsplit
+local sys
+local -a disabled enabled
+
+zstyle -a ":vcs_info:-init-:${1:-default}:-all-" "enable" enabled
+(( ${#enabled} == 0 )) && enabled=( all )
+
+if [[ -n ${(M)enabled:#(#i)all} ]] ; then
+    enabled=( ${VCS_INFO_backends} )
+    zstyle -a ":vcs_info:-init-:${1:-default}:-all-" "disable" disabled
+else
+    for sys in ${VCS_INFO_backends} ; do
+        [[ -z ${(M)enabled:#$sys} ]] && disabled+=( ${sys} )
+    done
+    enabled=( ${VCS_INFO_backends} )
+fi
+
+print -l '## list of supported version control backends:' \
+         '## disabled systems are prefixed by a hash sign (#)'
+
+for sys in ${VCS_INFO_backends} ; do
+    [[ -n ${(M)disabled:#${sys}} ]] && printf '#'
+    printf '%s\n' ${sys}
+done
+
+print -l '## flavours (cannot be used in the enable or disable styles; they' \
+         '## are enabled and disabled with their master [git-svn -> git])'   \
+         '## they *can* be used contexts: '\'':vcs_info:git-svn:*'\''.'
+
+for sys in ${VCS_INFO_backends} ; do
+    VCS_INFO_detect_${sys} --flavours
+done
+return 0
diff --git a/Functions/VCS_Info/vcs_info_setsys b/Functions/VCS_Info/vcs_info_setsys
new file mode 100644
index 000000000..b3b78348d
--- /dev/null
+++ b/Functions/VCS_Info/vcs_info_setsys
@@ -0,0 +1,22 @@
+## vim:ft=zsh
+## Written by Frank Terbeck <ft@bewatermyfriend.org>
+## Distributed under the same BSD-ish license as zsh itself.
+
+setopt localoptions noksharrays extendedglob typeset_silent NO_shwordsplit
+local sys
+typeset -g VCS_INFO_backends
+
+VCS_INFO_backends=()
+
+for file in ${^fpath}/VCS_INFO_get_data_*~*(\~|.zwc)(N) ; do
+    file=${file:t}
+    : ${file:#(#b)VCS_INFO_get_data_(*)}
+    sys=${match[1]}
+
+    [[ -n ${(M)VCS_INFO_backends:#${sys}} ]] && continue
+    VCS_INFO_backends+=(${sys})
+    autoload -Uz VCS_INFO_detect_${sys}
+    autoload -Uz VCS_INFO_get_data_${sys}
+done
+
+return 0
-- 
cgit 1.4.1