weird SET environment in OMV

BASH=/bin/bash
BASHOPTS=checkwinsize:cmdhist:expand_aliases:extglob:extquote:force_fignore:interactive_comments:login_shell:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_COMPLETION_COMPAT_DIR=/etc/bash_completion.d
BASH_LINENO=()
BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="2" [2]="37" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
BASH_VERSION='4.2.37(1)-release'
COLUMNS=80
COMP_WORDBREAKS=$' \t\n"\'><=;|&(:'
DIRSTACK=()
EUID=0
GROUPS=()
HISTFILE=/root/.bash_history
HISTFILESIZE=500
HISTSIZE=500
HOME=/root
HOSTNAME=openmediavault
HOSTTYPE=x86_64
IFS=$' \t\n'
LANG=de_DE.UTF-8
LINES=24
LOGNAME=root
MACHTYPE=x86_64-pc-linux-gnu
MAIL=/var/mail/root
MAILCHECK=60
OPTERR=1
OPTIND=1
OSTYPE=linux-gnu
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PIPESTATUS=([0]="0")
PPID=27520
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
PS2='> '
PS4='+ '
PWD=/root
SHELL=/bin/bash
SHELLOPTS=braceexpand:emacs:hashall:histexpand:history:interactive-comments:monitor
SHLVL=1
SSH_CLIENT='192.168.0.20 57070 22'
SSH_CONNECTION='192.168.0.20 57070 192.168.0.5 22'
SSH_TTY=/dev/pts/0
TERM=xterm
UID=0
USER=root
XDG_SESSION_COOKIE=d387478cafb276c44644bc8b5415e09e-1427098140.62195-1168521516
_=n

__colormgr_commandlist=$'\n    create-device\n    create-profile\n    delete-device\n    delete-profile\n    device-add-profile\n    device-get-default-profile\n    device-get-profile-for-qualifier\n    device-inhibit\n    device-make-profile-default\n    device-set-kind\n    device-set-model\n    device-set-serial\n    device-set-vendor\n    find-device\n    find-device-by-property\n    find-profile\n    find-profile-by-filename\n    get-devices\n    get-devices-by-kind\n    get-profiles\n    get-sensor-reading\n    get-sensors\n    get-standard-space\n    profile-set-filename\n    profile-set-qualifier\n    sensor-lock\n    sensor-set-options\n    '
__git_all_commands=
__git_diff_common_options=$'--stat --numstat --shortstat --summary\n\t\t\t--patch-with-stat --name-only --name-status --color\n\t\t\t--no-color --color-words --no-renames --check\n\t\t\t--full-index --binary --abbrev --diff-filter=\n\t\t\t--find-copies-harder\n\t\t\t--text --ignore-space-at-eol --ignore-space-change\n\t\t\t--ignore-all-space --exit-code --quiet --ext-diff\n\t\t\t--no-ext-diff\n\t\t\t--no-prefix --src-prefix= --dst-prefix=\n\t\t\t--inter-hunk-context=\n\t\t\t--patience\n\t\t\t--raw\n\t\t\t--dirstat --dirstat= --dirstat-by-file\n\t\t\t--dirstat-by-file= --cumulative\n'
__git_fetch_options=$'\n\t--quiet --verbose --append --upload-pack --force --keep --depth=\n\t--tags --no-tags --all --prune --dry-run\n'
__git_log_common_options=$'\n\t--not --all\n\t--branches --tags --remotes\n\t--first-parent --merges --no-merges\n\t--max-count=\n\t--max-age= --since= --after=\n\t--min-age= --until= --before=\n\t--min-parents= --max-parents=\n\t--no-min-parents --no-max-parents\n'
__git_log_date_formats='relative iso8601 rfc2822 short local default raw'
__git_log_gitk_options=$'\n\t--dense --sparse --full-history\n\t--simplify-merges --simplify-by-decoration\n\t--left-right --notes --no-notes\n'
__git_log_pretty_formats='oneline short medium full fuller email raw format:'
__git_log_shortlog_options=$'\n\t--author= --committer= --grep=\n\t--all-match\n'
__git_merge_options=$'\n\t--no-commit --no-stat --log --no-log --squash --strategy\n\t--commit --stat --no-squash --ff --no-ff --ff-only --edit --no-edit\n'
__git_merge_strategies=
__git_mergetools_common=$'diffuse ecmerge emerge kdiff3 meld opendiff\n\t\t\ttkdiff vimdiff gvimdiff xxdiff araxis p4merge bc3\n'
__git_porcelain_commands=
__git_send_email_confirm_options='always never auto cc compose'
__git_send_email_suppresscc_options='author self cc bodycc sob cccmd body all'
__git_whitespacelist='nowarn warn error error-all fix'

_omv-mkconf ()
{
    local cur;
    COMPREPLY=();
    cur="${COMP_WORDS[COMP_CWORD]}";
    OMV_MKCONF_SCRIPTS_DIR="/usr/share/openmediavault/mkconf";
    COMPREPLY=($( compgen -W '$( command find ${OMV_MKCONF_SCRIPTS_DIR} \
          -maxdepth 1 -type f -printf "%f\n" 2>/dev/null )' -- "$cur"  ))
}
_omv-sysinfo ()
{
    local cur prev;
    COMPREPLY=();
    cur="${COMP_WORDS[COMP_CWORD]}";
    prev="${COMP_WORDS[COMP_CWORD-1]}";
    OMV_SYSINFO_MODULES="/usr/share/openmediavault/sysinfo/modules.d";
    case $prev in
        -c)
            COMPREPLY=($( command ls --color=never $OMV_SYSINFO_MODULES                   2>/dev/null | egrep '^[0-9]{2}-' | sed 's/[a-z\-]*$//g'));
            COMPREPLY=($( compgen -W '${COMPREPLY[@]#$OMV_SYSINFO_MODULES}'               -- "$cur" ))
        ;;
        *)
            if [[ "$cur" == -* ]]; then
                COMPREPLY=($( compgen -W '-c -l -h' -- "$cur" ));
            else
                COMPREPLY=($( command ls --color=never $OMV_SYSINFO_MODULES                       2>/dev/null | egrep '^[0-9]{2}-'));
                COMPREPLY=($( compgen -W '${COMPREPLY[@]#$OMV_SYSINFO_MODULES}'                           -- "$cur" ));
            fi
        ;;
    esac
}