MAJOR=4
MINOR=9
DEVNAME=tty9
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# Bash completion for grub
#
# Copyright (C) 2010  Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
# bash completion for grub

__grub_dir() {
    local i c=1 boot_dir

    for (( c=1; c <= ${#COMP_WORDS[@]}; c++ )); do
        i="${COMP_WORDS[c]}"
        case "$i" in
            --boot-directory)
                c=$((++c))
                i="${COMP_WORDS[c]}"
                boot_dir="${i##*=}";
                break
                ;;
        esac
    done
    boot_dir=${boot_dir-/boot}
    echo "${boot_dir%/}/grub2"
}


# This function generates completion reply with compgen
# - arg: accepts 1, 2, 3, or 4 arguments
#        $1 wordlist separate by space, tab or newline
#        $2 (optional) prefix to add
#        $3 (optional) current word to complete
#        $4 (optional) suffix to add
__grubcomp () {
    local cur="${COMP_WORDS[COMP_CWORD]}"
    if [ $# -gt 2 ]; then
        cur="$3"
    fi
    case "$cur" in
    --*=)
        COMPREPLY=()
        ;;
    *)
        local IFS=' '$'\t'$'\n'
        COMPREPLY=($(compgen -P "${2-}" -W "${1-}" -S "${4-}" -- "$cur"))
        ;;
    esac
}

# Function that return long options from the help of the command
# - arg: $1 (optional) command to get the long options from
__grub_get_options_from_help () {
     local prog

     if [ $# -ge 1 ]; then
         prog="$1"
     else
         prog="${COMP_WORDS[0]}"
     fi

     local i IFS=" "$'\t'$'\n'
     for i in $(LC_ALL=C $prog --help)
     do
        case $i in
             --*) echo "${i%=*}";;
         esac
     done
}

# Function that return long options from the usage of the command
# - arg: $1 (optional) command to get the long options from
__grub_get_options_from_usage () {
     local prog

     if [ $# -ge 1 ]; then
         prog="$1"
     else
         prog="${COMP_WORDS[0]}"
     fi

     local i IFS=" "$'\t'$'\n'
     for i in $(LC_ALL=C $prog --usage)
     do
        case $i in
            \[--*\]) i=${i#[}           # Remove leading [
                     echo ${i%%?(=*)]}  # Remove optional value and trailing ]
                     ;;
         esac
     done
}

__grub_get_last_option () {
    local i
    for (( i=$COMP_CWORD-1; i > 0; i-- )); do
        if [[ "${COMP_WORDS[i]}" == -* ]]; then
            echo "${COMP_WORDS[i]}"
            break;
        fi
    done
}

__grub_list_menuentries () {
    local cur="${COMP_WORDS[COMP_CWORD]}"
    local config_file=$(__grub_dir)/grub.cfg

    if [ -f "$config_file" ];then
        local IFS=$'\n'
        COMPREPLY=( $(compgen \
            -W "$( awk -F "[\"']" '/menuentry/ { print $2 }' $config_file )" \
            -- "$cur" )) #'# Help emacs syntax highlighting
    fi
}

__grub_list_modules () {
    local grub_dir=$(__grub_dir)
    local IFS=$'\n'
    COMPREPLY=( $( compgen -f -X '!*/*.mod' -- "${grub_dir}/$cur" | {
         while read -r tmp; do
             [ -n $tmp ] && {
                 tmp=${tmp##*/}
                 printf '%s\n' ${tmp%.mod}
             }
         done
         }
        ))
}

#
# grub-set-default & grub-reboot
#
_grub_set_entry () {
    local cur prev split=false

    COMPREPLY=()
    cur=`_get_cword`
    prev=${COMP_WORDS[COMP_CWORD-1]}

    _split_longopt && split=true

    case "$prev" in
        --boot-directory)
            _filedir -d
            return
            ;;
    esac

    $split && return 0

    if [[ "$cur" == -* ]]; then
        __grub