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## 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_get_cmd
    VCS_INFO_hook
    VCS_INFO_maxexports
    VCS_INFO_nvcsformats
    VCS_INFO_quilt
    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 () {
    emulate -L zsh
    setopt extendedglob NO_warn_create_global

    [[ -r . ]] || return 0

    local pat
    local -i found retval
    local -a enabled disabled dps
    local -x usercontext vcs rrn quiltmode LC_MESSAGES
    local -ix maxexports
    local -ax msgs
    local -Ax vcs_comm hook_com backend_misc user_data

    LC_MESSAGES=C
    if [[ -n ${LC_ALL} ]]; then
        local -x LANG
        LANG=${LC_ALL}
        local -x LC_ALL
    fi
    vcs='-init-'; rrn='-all-'; quiltmode='addon'
    usercontext=${1:-default}

    VCS_INFO_hook "start-up"
    retval=$?
    if (( retval == 1 )); then
        return 0
    elif (( retval == 2 )); then
        VCS_INFO_set --nvcs
        return 0
    fi

    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

    zstyle -a ":vcs_info:${vcs}:${usercontext}:${rrn}" "disable-patterns" dps

    for pat in ${dps} ; do
        if [[ ${PWD} == ${~pat} ]] ; then
            [[ -n ${vcs_info_msg_0_} ]] && VCS_INFO_set --clear
            return 0
        fi
    done

    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' ${vcs}
            printf 'vcs_info: use '\''vcs_info_printsys'\'' to find supported systems.\n'
            continue
        fi
        vcs_comm=()
        VCS_INFO_get_cmd
        VCS_INFO_detect_${vcs} && (( found = 1 )) && break
    done

    (( found == 0 )) && {
        vcs='-quilt-'; quiltmode='standalone'
        VCS_INFO_quilt standalone || VCS_INFO_set --nvcs
        return 0
    }

    VCS_INFO_hook "pre-get-data"
    retval=$?
    if (( retval == 1 )); then
        return 0
    elif (( retval == 2 )); then
        VCS_INFO_set --nvcs
        return 0
    fi

    VCS_INFO_get_data_${vcs} || {
        VCS_INFO_set --nvcs
        return 1
    }

    VCS_INFO_set
    return 0
}

vcs_info "$@"

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