zstyle ":completion:*" list-colors ""

zstyle ":completion:*:functions" ignored-patterns "_*"
zstyle ":completion:*:manuals" separate-sections true

zstyle ":completion:*" group-name ""
zstyle ":completion:*:messages" format "%d"
zstyle ":completion:*:warnings" format "%F{red}no matches: %d%f"
zstyle ":completion:*:*:*:*:descriptions" format "%B... %d%b"
zstyle ":completion:*:files:*:*:descriptions" format ""

zstyle ":completion:*" file-patterns "%p:globbed" "*"
zstyle ":completion:*" matcher-list "" "m:{a-z-}={A-Z_}" "r:|?=** m:{a-z-}={A-Z_}"
zstyle ":completion:*:man:*:*:*" matcher-list "" "m:{a-zA-Z}={A-Za-z} l:|=* r:|=*"
zstyle ":completion:*" completer \
    _mycomp_mbox \
    _mycomp_man:man \
    _mycomp_info \
    _mycomp \
    _parameters \
    _ignored

_mycomp() {
    [[ $CURRENT -eq 1 ]] && curcontext="${curcontext%:*:*}:-command-:" \
        _command_names && return
    [[ $IPREFIX =~ ~.* ]] && _tilde && return
    local has_files
    curcontext=:files:${curcontext#:*:} _files && has_files=1
    [[ $has_files ]] && return

    # MAGIC_EQUAL_SUBST {{{
    [[ $PREFIX = *\=* ]] || return 1
    compstate[parameter]=${PREFIX%%\=*}
    compset -P 1 "*="
    _value
    # }}}
}

_mycomp_man() {
    [[ ${words[1]} == man ]] && _dispatch man man man "" -default- && _value && return
}

_mycomp_info() {
    [[ ${words[1]} == info ]] && _dispatch info info info "" -default- && return
}

local mboxes=()
for m ($MAILDIR/*(/on)) mboxes=($mboxes $m:t)

_mycomp_mbox() {
    [[ ${words[1]} == mbox ]] && _values mboxes $mboxes && return
}

autoload -U compinit ; compinit -d /tmp/.zcompdump
autoload -U complist