20 files changed, 0 insertions, 2597 deletions
diff --git a/tv/configs/AO753.nix b/tv/configs/AO753.nix
deleted file mode 100644
index c103ce2d7..000000000
--- a/tv/configs/AO753.nix
+++ /dev/null
@@ -1,39 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-  imports = [
-    ../configs/smartd.nix
-  ];
-
-  boot.loader.grub = {
-    device = "/dev/sda";
-    splashImage = null;
-  };
-
-  boot.initrd.availableKernelModules = [
-    "ahci"
-  ];
-
-  boot.kernelModules = [
-    "kvm-intel"
-    "wl"
-  ];
-
-  boot.extraModulePackages = [
-    config.boot.kernelPackages.broadcom_sta
-  ];
-
-  networking.wireless.enable = true;
-
-  services.logind.extraConfig = ''
-    HandleHibernateKey=ignore
-    HandleLidSwitch=ignore
-    HandlePowerKey=ignore
-    HandleSuspendKey=ignore
-  '';
-
-  nixpkgs.config = {
-    allowUnfree = false;
-    allowUnfreePredicate = (x: pkgs.lib.hasPrefix "broadcom-sta-" x.name);
-  };
-}
diff --git a/tv/configs/CAC-CentOS-7-64bit.nix b/tv/configs/CAC-CentOS-7-64bit.nix
deleted file mode 100644
index 168d1d97b..000000000
--- a/tv/configs/CAC-CentOS-7-64bit.nix
+++ /dev/null
@@ -1,47 +0,0 @@
-_:
-
-{
-  boot.loader.grub = {
-    device = "/dev/sda";
-    splashImage = null;
-  };
-
-  boot.initrd.availableKernelModules = [
-    "ata_piix"
-    "vmw_pvscsi"
-  ];
-
-  fileSystems."/" = {
-    device = "/dev/centos/root";
-    fsType = "xfs";
-  };
-
-  fileSystems."/boot" = {
-    device = "/dev/sda1";
-    fsType = "xfs";
-  };
-
-  swapDevices = [
-    { device = "/dev/centos/swap"; }
-  ];
-
-  users.extraGroups = {
-    # ● systemd-tmpfiles-setup.service - Create Volatile Files and Directories
-    #    Loaded: loaded (/nix/store/2l33gg7nmncqkpysq9f5fxyhlw6ncm2j-systemd-217/example/systemd/system/systemd-tmpfiles-setup.service)
-    #    Active: failed (Result: exit-code) since Mon 2015-03-16 10:29:18 UTC; 4s ago
-    #      Docs: man:tmpfiles.d(5)
-    #            man:systemd-tmpfiles(8)
-    #   Process: 19272 ExecStart=/nix/store/2l33gg7nmncqkpysq9f5fxyhlw6ncm2j-systemd-217/bin/systemd-tmpfiles --create --remove --boot --exclude-prefix=/dev (code=exited, status=1/FAILURE)
-    #  Main PID: 19272 (code=exited, status=1/FAILURE)
-    #
-    # Mar 16 10:29:17 cd systemd-tmpfiles[19272]: [/usr/lib/tmpfiles.d/legacy.conf:26] Unknown group 'lock'.
-    # Mar 16 10:29:18 cd systemd-tmpfiles[19272]: Two or more conflicting lines for /var/log/journal configured, ignoring.
-    # Mar 16 10:29:18 cd systemd-tmpfiles[19272]: Two or more conflicting lines for /var/log/journal/7b35116927d74ea58785e00b47ac0f0d configured, ignoring.
-    # Mar 16 10:29:18 cd systemd[1]: systemd-tmpfiles-setup.service: main process exited, code=exited, status=1/FAILURE
-    # Mar 16 10:29:18 cd systemd[1]: Failed to start Create Volatile Files and Directories.
-    # Mar 16 10:29:18 cd systemd[1]: Unit systemd-tmpfiles-setup.service entered failed state.
-    # Mar 16 10:29:18 cd systemd[1]: systemd-tmpfiles-setup.service failed.
-    # warning: error(s) occured while switching to the new configuration
-    lock.gid = 10001;
-  };
-}
diff --git a/tv/configs/CAC-Developer-1.nix b/tv/configs/CAC-Developer-1.nix
deleted file mode 100644
index 37bc32afb..000000000
--- a/tv/configs/CAC-Developer-1.nix
+++ /dev/null
@@ -1,6 +0,0 @@
-_:
-
-{
-  nix.maxJobs = 1;
-  sound.enable = false;
-}
diff --git a/tv/configs/CAC-Developer-2.nix b/tv/configs/CAC-Developer-2.nix
deleted file mode 100644
index fedb808df..000000000
--- a/tv/configs/CAC-Developer-2.nix
+++ /dev/null
@@ -1,6 +0,0 @@
-_:
-
-{
-  nix.maxJobs = 2;
-  sound.enable = false;
-}
diff --git a/tv/configs/base.nix b/tv/configs/base.nix
deleted file mode 100644
index 997d4c235..000000000
--- a/tv/configs/base.nix
+++ /dev/null
@@ -1,187 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with builtins;
-with lib;
-
-let
-  # "7.4.335" -> "74"
-  majmin = x: concatStrings (take 2 (splitString "." x));
-in
-
-{
-  krebs.enable = true;
-
-  networking.hostName = config.krebs.build.host.name;
-
-  imports = [
-    {
-      users.extraUsers =
-        mapAttrs (_: h: { hashedPassword = h; })
-                 (import /root/src/secrets/hashedPasswords.nix);
-    }
-    {
-      users.defaultUserShell = "/run/current-system/sw/bin/bash";
-      users.mutableUsers = false;
-    }
-    {
-      users.extraUsers = {
-        root = {
-          openssh.authorizedKeys.keys = [
-            config.krebs.users.tv.pubkey
-          ];
-        };
-        tv = {
-          uid = 1337;
-          group = "users";
-          home = "/home/tv";
-          createHome = true;
-          useDefaultShell = true;
-          extraGroups = [
-            "audio"
-            "video"
-            "wheel"
-          ];
-          openssh.authorizedKeys.keys = [
-            config.krebs.users.tv.pubkey
-          ];
-        };
-      };
-    }
-    {
-      security.sudo.extraConfig = ''
-        Defaults mailto="${config.krebs.users.tv.mail}"
-      '';
-      time.timeZone = "Europe/Berlin";
-    }
-    {
-      # TODO check if both are required:
-      nix.chrootDirs = [ "/etc/protocols" pkgs.iana_etc.outPath ];
-
-      nix.trustedBinaryCaches = [
-        "https://cache.nixos.org"
-        "http://cache.nixos.org"
-        "http://hydra.nixos.org"
-      ];
-
-      nix.useChroot = true;
-    }
-    {
-      # oldvim
-      environment.systemPackages = with pkgs; [
-        vim
-      ];
-
-      environment.etc."vim/vimrc".text = ''
-        set nocp
-      '';
-
-      environment.etc."vim/vim${majmin pkgs.vim.version}".source =
-          "${pkgs.vim}/share/vim/vim${majmin pkgs.vim.version}";
-
-      # multiple-definition-problem when defining environment.variables.EDITOR
-      environment.extraInit = ''
-        EDITOR=vim
-      '';
-
-      environment.variables.VIM = "/etc/vim";
-    }
-    {
-      environment.systemPackages = with pkgs; [
-        rxvt_unicode.terminfo
-      ];
-
-      environment.shellAliases = {
-        # alias cal='cal -m3'
-        gp = "${pkgs.pari}/bin/gp -q";
-        df = "df -h";
-        du = "du -h";
-        # alias grep='grep --color=auto'
-
-        # TODO alias cannot contain #\'
-        # "ps?" = "ps ax | head -n 1;ps ax | fgrep -v ' grep --color=auto ' | grep";
-
-        # alias la='ls -lA'
-        lAtr = "ls -lAtr";
-        # alias ll='ls -l'
-        ls = "ls -h --color=auto --group-directories-first";
-        # alias vim='vim -p'
-        # alias vi='vim'
-        # alias view='vim -R'
-        dmesg = "dmesg -L --reltime";
-      };
-
-      programs.bash = {
-        interactiveShellInit = ''
-          HISTCONTROL='erasedups:ignorespace'
-          HISTSIZE=65536
-          HISTFILESIZE=$HISTSIZE
-
-          shopt -s checkhash
-          shopt -s histappend histreedit histverify
-          shopt -s no_empty_cmd_completion
-          complete -d cd
-
-          ${readFile ./bash_completion.sh}
-
-          # TODO source bridge
-        '';
-        promptInit = ''
-          case $UID in
-            0)
-              PS1='\[\e[1;31m\]\w\[\e[0m\] '
-              ;;
-            1337)
-              PS1='\[\e[1;32m\]\w\[\e[0m\] '
-              ;;
-            *)
-              PS1='\[\e[1;35m\]\u \[\e[1;32m\]\w\[\e[0m\] '
-              ;;
-          esac
-          if test -n "$SSH_CLIENT"; then
-            PS1='\[\e[35m\]\h'" $PS1"
-          fi
-          if test -n "$SSH_AGENT_PID"; then
-            PS1="ssh-agent[$SSH_AGENT_PID] $PS1"
-          fi
-        '';
-      };
-
-      programs.ssh.startAgent = false;
-    }
-
-    {
-      nixpkgs.config.packageOverrides = pkgs:
-        {
-          nano = pkgs.runCommand "empty" {} "mkdir -p $out";
-        };
-
-      services.cron.enable = false;
-      services.nscd.enable = false;
-      services.ntp.enable = false;
-    }
-
-    {
-      boot.kernel.sysctl = {
-        # Enable IPv6 Privacy Extensions
-        "net.ipv6.conf.all.use_tempaddr" = 2;
-        "net.ipv6.conf.default.use_tempaddr" = 2;
-      };
-    }
-
-    {
-      services.openssh = {
-        enable = true;
-        hostKeys = [
-          { type = "ed25519"; path = "/etc/ssh/ssh_host_ed25519_key"; }
-        ];
-      };
-    }
-
-    {
-      # TODO: exim
-      security.setuidPrograms = [
-        "sendmail"  # for sudo
-      ];
-    }
-  ];
-}
diff --git a/tv/configs/bash_completion.sh b/tv/configs/bash_completion.sh
deleted file mode 100644
index 537484fb9..000000000
--- a/tv/configs/bash_completion.sh
+++ /dev/null
@@ -1,779 +0,0 @@
-
-# Expand variable starting with tilde (~)
-# We want to expand ~foo/... to /home/foo/... to avoid problems when
-# word-to-complete starting with a tilde is fed to commands and ending up
-# quoted instead of expanded.
-# Only the first portion of the variable from the tilde up to the first slash
-# (~../) is expanded.  The remainder of the variable, containing for example
-# a dollar sign variable ($) or asterisk (*) is not expanded.
-# Example usage:
-#
-#    $ v="~"; __expand_tilde_by_ref v; echo "$v"
-#
-# Example output:
-#
-#       v                  output
-#    --------         ----------------
-#    ~                /home/user
-#    ~foo/bar         /home/foo/bar
-#    ~foo/$HOME       /home/foo/$HOME
-#    ~foo/a  b        /home/foo/a  b
-#    ~foo/*           /home/foo/*
-#
-# @param $1  Name of variable (not the value of the variable) to expand
-__expand_tilde_by_ref()
-{
-    # Does $1 start with tilde (~)?
-    if [[ ${!1} == \~* ]]; then
-        # Does $1 contain slash (/)?
-        if [[ ${!1} == */* ]]; then
-            # Yes, $1 contains slash;
-            # 1: Remove * including and after first slash (/), i.e. "~a/b"
-            #    becomes "~a".  Double quotes allow eval.
-            # 2: Remove * before the first slash (/), i.e. "~a/b"
-            #    becomes "b".  Single quotes prevent eval.
-            #       +-----1----+ +---2----+
-            eval $1="${!1/%\/*}"/'${!1#*/}'
-        else
-            # No, $1 doesn't contain slash
-            eval $1="${!1}"
-        fi
-    fi
-} # __expand_tilde_by_ref()
-
-
-# Get the word to complete.
-# This is nicer than ${COMP_WORDS[$COMP_CWORD]}, since it handles cases
-# where the user is completing in the middle of a word.
-# (For example, if the line is "ls foobar",
-# and the cursor is here -------->   ^
-# @param $1 string  Characters out of $COMP_WORDBREAKS which should NOT be
-#     considered word breaks. This is useful for things like scp where
-#     we want to return host:path and not only path, so we would pass the
-#     colon (:) as $1 in this case.
-# @param $2 integer  Index number of word to return, negatively offset to the
-#     current word (default is 0, previous is 1), respecting the exclusions
-#     given at $1.  For example, `_get_cword "=:" 1' returns the word left of
-#     the current word, respecting the exclusions "=:".
-# @deprecated  Use `_get_comp_words_by_ref cur' instead
-# @see _get_comp_words_by_ref()
-_get_cword()
-{
-    local LC_CTYPE=C
-    local cword words
-    __reassemble_comp_words_by_ref "$1" words cword
-
-    # return previous word offset by $2
-    if [[ ${2//[^0-9]/} ]]; then
-        printf "%s" "${words[cword-$2]}"
-    elif [[ "${#words[cword]}" -eq 0 || "$COMP_POINT" == "${#COMP_LINE}" ]]; then
-        printf "%s" "${words[cword]}"
-    else
-        local i
-        local cur="$COMP_LINE"
-        local index="$COMP_POINT"
-        for (( i = 0; i <= cword; ++i )); do
-            while [[
-                # Current word fits in $cur?
-                "${#cur}" -ge ${#words[i]} &&
-                # $cur doesn't match cword?
-                "${cur:0:${#words[i]}}" != "${words[i]}"
-            ]]; do
-                # Strip first character
-                cur="${cur:1}"
-                # Decrease cursor position
-                ((index--))
-            done
-
-            # Does found word matches cword?
-            if [[ "$i" -lt "$cword" ]]; then
-                # No, cword lies further;
-                local old_size="${#cur}"
-                cur="${cur#${words[i]}}"
-                local new_size="${#cur}"
-                index=$(( index - old_size + new_size ))
-            fi
-        done
-
-        if [[ "${words[cword]:0:${#cur}}" != "$cur" ]]; then
-            # We messed up! At least return the whole word so things
-            # keep working
-            printf "%s" "${words[cword]}"
-        else
-            printf "%s" "${cur:0:$index}"
-        fi
-    fi
-} # _get_cword()
-
-
-# Get word previous to the current word.
-# This is a good alternative to `prev=${COMP_WORDS[COMP_CWORD-1]}' because bash4
-# will properly return the previous word with respect to any given exclusions to
-# COMP_WORDBREAKS.
-# @deprecated  Use `_get_comp_words_by_ref cur prev' instead
-# @see _get_comp_words_by_ref()
-#
-_get_pword()
-{
-    if [[ $COMP_CWORD -ge 1 ]]; then
-        _get_cword "${@:-}" 1
-    fi
-}
-
-
-
-# Complete variables.
-# @return  True (0) if variables were completed,
-#          False (> 0) if not.
-_variables()
-{
-    if [[ $cur =~ ^(\$\{?)([A-Za-z0-9_]*)$ ]]; then
-        [[ $cur == *{* ]] && local suffix=} || local suffix=
-        COMPREPLY+=( $( compgen -P ${BASH_REMATCH[1]} -S "$suffix" -v -- \
-            "${BASH_REMATCH[2]}" ) )
-        return 0
-    fi
-    return 1
-}
-
-# Assign variable one scope above the caller
-# Usage: local "$1" && _upvar $1 "value(s)"
-# Param: $1  Variable name to assign value to
-# Param: $*  Value(s) to assign.  If multiple values, an array is
-#            assigned, otherwise a single value is assigned.
-# NOTE: For assigning multiple variables, use '_upvars'.  Do NOT
-#       use multiple '_upvar' calls, since one '_upvar' call might
-#       reassign a variable to be used by another '_upvar' call.
-# See: http://fvue.nl/wiki/Bash:_Passing_variables_by_reference
-_upvar()
-{
-    if unset -v "$1"; then           # Unset & validate varname
-        if (( $# == 2 )); then
-            eval $1=\"\$2\"          # Return single value
-        else
-            eval $1=\(\"\${@:2}\"\)  # Return array
-        fi
-    fi
-}
-
-# Assign variables one scope above the caller
-# Usage: local varname [varname ...] &&
-#        _upvars [-v varname value] | [-aN varname [value ...]] ...
-# Available OPTIONS:
-#     -aN  Assign next N values to varname as array
-#     -v   Assign single value to varname
-# Return: 1 if error occurs
-# See: http://fvue.nl/wiki/Bash:_Passing_variables_by_reference
-_upvars()
-{
-    if ! (( $# )); then
-        echo "${FUNCNAME[0]}: usage: ${FUNCNAME[0]} [-v varname"\
-            "value] | [-aN varname [value ...]] ..." 1>&2
-        return 2
-    fi
-    while (( $# )); do
-        case $1 in
-            -a*)
-                # Error checking
-                [[ ${1#-a} ]] || { echo "bash: ${FUNCNAME[0]}: \`$1': missing"\
-                    "number specifier" 1>&2; return 1; }
-                printf %d "${1#-a}" &> /dev/null || { echo "bash:"\
-                    "${FUNCNAME[0]}: \`$1': invalid number specifier" 1>&2
-                    return 1; }
-                # Assign array of -aN elements
-                [[ "$2" ]] && unset -v "$2" && eval $2=\(\"\${@:3:${1#-a}}\"\) &&
-                shift $((${1#-a} + 2)) || { echo "bash: ${FUNCNAME[0]}:"\
-                    "\`$1${2+ }$2': missing argument(s)" 1>&2; return 1; }
-                ;;
-            -v)
-                # Assign single value
-                [[ "$2" ]] && unset -v "$2" && eval $2=\"\$3\" &&
-                shift 3 || { echo "bash: ${FUNCNAME[0]}: $1: missing"\
-                "argument(s)" 1>&2; return 1; }
-                ;;
-            *)
-                echo "bash: ${FUNCNAME[0]}: $1: invalid option" 1>&2
-                return 1 ;;
-        esac
-    done
-}
-
-# @param $1 exclude  Characters out of $COMP_WORDBREAKS which should NOT be
-#     considered word breaks. This is useful for things like scp where
-#     we want to return host:path and not only path, so we would pass the
-#     colon (:) as $1 in this case.
-# @param $2 words  Name of variable to return words to
-# @param $3 cword  Name of variable to return cword to
-# @param $4 cur  Name of variable to return current word to complete to
-# @see __reassemble_comp_words_by_ref()
-__get_cword_at_cursor_by_ref()
-{
-    local cword words=()
-    __reassemble_comp_words_by_ref "$1" words cword
-
-    local i cur index=$COMP_POINT lead=${COMP_LINE:0:$COMP_POINT}
-    # Cursor not at position 0 and not leaded by just space(s)?
-    if [[ $index -gt 0 && ( $lead && ${lead//[[:space:]]} ) ]]; then
-        cur=$COMP_LINE
-        for (( i = 0; i <= cword; ++i )); do
-            while [[
-                # Current word fits in $cur?
-                ${#cur} -ge ${#words[i]} &&
-                # $cur doesn't match cword?
-                "${cur:0:${#words[i]}}" != "${words[i]}"
-            ]]; do
-                # Strip first character
-                cur="${cur:1}"
-                # Decrease cursor position
-                ((index--))
-            done
-
-            # Does found word match cword?
-            if [[ $i -lt $cword ]]; then
-                # No, cword lies further;
-                local old_size=${#cur}
-                cur="${cur#"${words[i]}"}"
-                local new_size=${#cur}
-                index=$(( index - old_size + new_size ))
-            fi
-        done
-        # Clear $cur if just space(s)
-        [[ $cur && ! ${cur//[[:space:]]} ]] && cur=
-        # Zero $index if negative
-        [[ $index -lt 0 ]] && index=0
-    fi
-
-    local "$2" "$3" "$4" && _upvars -a${#words[@]} $2 "${words[@]}" \
-        -v $3 "$cword" -v $4 "${cur:0:$index}"
-}
-
-# Reassemble command line words, excluding specified characters from the
-# list of word completion separators (COMP_WORDBREAKS).
-# @param $1 chars  Characters out of $COMP_WORDBREAKS which should
-#     NOT be considered word breaks. This is useful for things like scp where
-#     we want to return host:path and not only path, so we would pass the
-#     colon (:) as $1 here.
-# @param $2 words  Name of variable to return words to
-# @param $3 cword  Name of variable to return cword to
-#
-__reassemble_comp_words_by_ref()
-{
-    local exclude i j line ref
-    # Exclude word separator characters?
-    if [[ $1 ]]; then
-        # Yes, exclude word separator characters;
-        # Exclude only those characters, which were really included
-        exclude="${1//[^$COMP_WORDBREAKS]}"
-    fi
-
-    # Default to cword unchanged
-    eval $3=$COMP_CWORD
-    # Are characters excluded which were former included?
-    if [[ $exclude ]]; then
-        # Yes, list of word completion separators has shrunk;
-        line=$COMP_LINE
-        # Re-assemble words to complete
-        for (( i=0, j=0; i < ${#COMP_WORDS[@]}; i++, j++)); do
-            # Is current word not word 0 (the command itself) and is word not
-            # empty and is word made up of just word separator characters to
-            # be excluded and is current word not preceded by whitespace in
-            # original line?
-            while [[ $i -gt 0 && ${COMP_WORDS[$i]} == +([$exclude]) ]]; do
-                # Is word separator not preceded by whitespace in original line
-                # and are we not going to append to word 0 (the command
-                # itself), then append to current word.
-                [[ $line != [$' \t']* ]] && (( j >= 2 )) && ((j--))
-                # Append word separator to current or new word
-                ref="$2[$j]"
-                eval $2[$j]=\${!ref}\${COMP_WORDS[i]}
-                # Indicate new cword
-                [[ $i == $COMP_CWORD ]] && eval $3=$j
-                # Remove optional whitespace + word separator from line copy
-                line=${line#*"${COMP_WORDS[$i]}"}
-                # Start new word if word separator in original line is
-                # followed by whitespace.
-                [[ $line == [$' \t']* ]] && ((j++))
-                # Indicate next word if available, else end *both* while and
-                # for loop
-                (( $i < ${#COMP_WORDS[@]} - 1)) && ((i++)) || break 2
-            done
-            # Append word to current word
-            ref="$2[$j]"
-            eval $2[$j]=\${!ref}\${COMP_WORDS[i]}
-            # Remove optional whitespace + word from line copy
-            line=${line#*"${COMP_WORDS[i]}"}
-            # Indicate new cword
-            [[ $i == $COMP_CWORD ]] && eval $3=$j
-        done
-        [[ $i == $COMP_CWORD ]] && eval $3=$j
-    else
-        # No, list of word completions separators hasn't changed;
-        eval $2=\( \"\${COMP_WORDS[@]}\" \)
-    fi
-} # __reassemble_comp_words_by_ref()
-
-
-# If the word-to-complete contains a colon (:), left-trim COMPREPLY items with
-# word-to-complete.
-# With a colon in COMP_WORDBREAKS, words containing
-# colons are always completed as entire words if the word to complete contains
-# a colon.  This function fixes this, by removing the colon-containing-prefix
-# from COMPREPLY items.
-# The preferred solution is to remove the colon (:) from COMP_WORDBREAKS in
-# your .bashrc:
-#
-#    # Remove colon (:) from list of word completion separators
-#    COMP_WORDBREAKS=${COMP_WORDBREAKS//:}
-#
-# See also: Bash FAQ - E13) Why does filename completion misbehave if a colon
-# appears in the filename? - http://tiswww.case.edu/php/chet/bash/FAQ
-# @param $1 current word to complete (cur)
-# @modifies global array $COMPREPLY
-#
-__ltrim_colon_completions()
-{
-    if [[ "$1" == *:* && "$COMP_WORDBREAKS" == *:* ]]; then
-        # Remove colon-word prefix from COMPREPLY items
-        local colon_word=${1%"${1##*:}"}
-        local i=${#COMPREPLY[*]}
-        while [[ $((--i)) -ge 0 ]]; do
-            COMPREPLY[$i]=${COMPREPLY[$i]#"$colon_word"}
-        done
-    fi
-} # __ltrim_colon_completions()
-
-
-# NOTE: Using this function as a helper function is deprecated.  Use
-#       `_known_hosts_real' instead.
-_known_hosts()
-{
-    local cur prev words cword
-    _init_completion -n : || return
-
-    # NOTE: Using `_known_hosts' as a helper function and passing options
-    #       to `_known_hosts' is deprecated: Use `_known_hosts_real' instead.
-    local options
-    [[ "$1" == -a || "$2" == -a ]] && options=-a
-    [[ "$1" == -c || "$2" == -c ]] && options+=" -c"
-    _known_hosts_real $options -- "$cur"
-} # _known_hosts()
-
-
-# Helper function for completing _known_hosts.
-# This function performs host completion based on ssh's config and known_hosts
-# files, as well as hostnames reported by avahi-browse if
-# COMP_KNOWN_HOSTS_WITH_AVAHI is set to a non-empty value.  Also hosts from
-# HOSTFILE (compgen -A hostname) are added, unless
-# COMP_KNOWN_HOSTS_WITH_HOSTFILE is set to an empty value.
-# Usage: _known_hosts_real [OPTIONS] CWORD
-# Options:  -a             Use aliases
-#           -c             Use `:' suffix
-#           -F configfile  Use `configfile' for configuration settings
-#           -p PREFIX      Use PREFIX
-# Return: Completions, starting with CWORD, are added to COMPREPLY[]
-_known_hosts_real()
-{
-    local configfile flag prefix
-    local cur curd awkcur user suffix aliases i host
-    local -a kh khd config
-
-    local OPTIND=1
-    while getopts "acF:p:" flag "$@"; do
-        case $flag in
-            a) aliases='yes' ;;
-            c) suffix=':' ;;
-            F) configfile=$OPTARG ;;
-            p) prefix=$OPTARG ;;
-        esac
-    done
-    [[ $# -lt $OPTIND ]] && echo "error: $FUNCNAME: missing mandatory argument CWORD"
-    cur=${!OPTIND}; let "OPTIND += 1"
-    [[ $# -ge $OPTIND ]] && echo "error: $FUNCNAME("$@"): unprocessed arguments:"\
-    $(while [[ $# -ge $OPTIND ]]; do printf '%s\n' ${!OPTIND}; shift; done)
-
-    [[ $cur == *@* ]] && user=${cur%@*}@ && cur=${cur#*@}
-    kh=()
-
-    # ssh config files
-    if [[ -n $configfile ]]; then
-        [[ -r $configfile ]] && config+=( "$configfile" )
-    else
-        for i in /etc/ssh/ssh_config ~/.ssh/config ~/.ssh2/config; do
-            [[ -r $i ]] && config+=( "$i" )
-        done
-    fi
-
-    # Known hosts files from configs
-    if [[ ${#config[@]} -gt 0 ]]; then
-        local OIFS=$IFS IFS=$'\n' j
-        local -a tmpkh
-        # expand paths (if present) to global and user known hosts files
-        # TODO(?): try to make known hosts files with more than one consecutive
-        #          spaces in their name work (watch out for ~ expansion
-        #          breakage! Alioth#311595)
-        tmpkh=( $( awk 'sub("^[ \t]*([Gg][Ll][Oo][Bb][Aa][Ll]|[Uu][Ss][Ee][Rr])[Kk][Nn][Oo][Ww][Nn][Hh][Oo][Ss][Tt][Ss][Ff][Ii][Ll][Ee][ \t]+", "") { print $0 }' "${config[@]}" | sort -u ) )
-        IFS=$OIFS
-        for i in "${tmpkh[@]}"; do
-            # First deal with quoted entries...
-            while [[ $i =~ ^([^\"]*)\"([^\"]*)\"(.*)$ ]]; do
-                i=${BASH_REMATCH[1]}${BASH_REMATCH[3]}
-                j=${BASH_REMATCH[2]}
-                __expand_tilde_by_ref j # Eval/expand possible `~' or `~user'
-                [[ -r $j ]] && kh+=( "$j" )
-            done
-            # ...and then the rest.
-            for j in $i; do
-                __expand_tilde_by_ref j # Eval/expand possible `~' or `~user'
-                [[ -r $j ]] && kh+=( "$j" )
-            done
-        done
-    fi
-
-
-    if [[ -z $configfile ]]; then
-        # Global and user known_hosts files
-        for i in /etc/ssh/ssh_known_hosts /etc/ssh/ssh_known_hosts2 \
-            /etc/known_hosts /etc/known_hosts2 ~/.ssh/known_hosts \
-            ~/.ssh/known_hosts2; do
-            [[ -r $i ]] && kh+=( "$i" )
-        done
-        for i in /etc/ssh2/knownhosts ~/.ssh2/hostkeys; do
-            [[ -d $i ]] && khd+=( "$i"/*pub )
-        done
-    fi
-
-    # If we have known_hosts files to use
-    if [[ ${#kh[@]} -gt 0 || ${#khd[@]} -gt 0 ]]; then
-        # Escape slashes and dots in paths for awk
-        awkcur=${cur//\//\\\/}
-        awkcur=${awkcur//\./\\\.}
-        curd=$awkcur
-
-        if [[ "$awkcur" == [0-9]*[.:]* ]]; then
-            # Digits followed by a dot or a colon - just search for that
-            awkcur="^$awkcur[.:]*"
-        elif [[ "$awkcur" == [0-9]* ]]; then
-            # Digits followed by no dot or colon - search for digits followed
-            # by a dot or a colon
-            awkcur="^$awkcur.*[.:]"
-        elif [[ -z $awkcur ]]; then
-            # A blank - search for a dot, a colon, or an alpha character
-            awkcur="[a-z.:]"
-        else
-            awkcur="^$awkcur"
-        fi
-
-        if [[ ${#kh[@]} -gt 0 ]]; then
-            # FS needs to look for a comma separated list
-            COMPREPLY+=( $( awk 'BEGIN {FS=","}
-            /^\s*[^|\#]/ {
-            sub("^@[^ ]+ +", ""); \
-            sub(" .*$", ""); \
-            for (i=1; i<=NF; ++i) { \
-            sub("^\\[", "", $i); sub("\\](:[0-9]+)?$", "", $i); \
-            if ($i !~ /[*?]/ && $i ~ /'"$awkcur"'/) {print $i} \
-            }}' "${kh[@]}" 2>/dev/null ) )
-        fi
-        if [[ ${#khd[@]} -gt 0 ]]; then
-            # Needs to look for files called
-            # .../.ssh2/key_22_<hostname>.pub
-            # dont fork any processes, because in a cluster environment,
-            # there can be hundreds of hostkeys
-            for i in "${khd[@]}" ; do
-                if [[ "$i" == *key_22_$curd*.pub && -r "$i" ]]; then
-                    host=${i/#*key_22_/}
-                    host=${host/%.pub/}
-                    COMPREPLY+=( $host )
-                fi
-            done
-        fi
-
-        # apply suffix and prefix
-        for (( i=0; i < ${#COMPREPLY[@]}; i++ )); do
-            COMPREPLY[i]=$prefix$user${COMPREPLY[i]}$suffix
-        done
-    fi
-
-    # append any available aliases from config files
-    if [[ ${#config[@]} -gt 0 && -n "$aliases" ]]; then
-        local hosts=$( sed -ne 's/^[ \t]*[Hh][Oo][Ss][Tt]\([Nn][Aa][Mm][Ee]\)\{0,1\}['"$'\t '"']\{1,\}\([^#*?]*\)\(#.*\)\{0,1\}$/\2/p' "${config[@]}" )
-        COMPREPLY+=( $( compgen -P "$prefix$user" \
-            -S "$suffix" -W "$hosts" -- "$cur" ) )
-    fi
-
-    # Add hosts reported by avahi-browse, if desired and it's available.
-    if [[ ${COMP_KNOWN_HOSTS_WITH_AVAHI:-} ]] && \
-        type avahi-browse &>/dev/null; then
-        # The original call to avahi-browse also had "-k", to avoid lookups
-        # into avahi's services DB. We don't need the name of the service, and
-        # if it contains ";", it may mistify the result. But on Gentoo (at
-        # least), -k wasn't available (even if mentioned in the manpage) some
-        # time ago, so...
-        COMPREPLY+=( $( compgen -P "$prefix$user" -S "$suffix" -W \
-            "$( avahi-browse -cpr _workstation._tcp 2>/dev/null | \
-                 awk -F';' '/^=/ { print $7 }' | sort -u )" -- "$cur" ) )
-    fi
-
-    # Add hosts reported by ruptime.
-    COMPREPLY+=( $( compgen -W \
-        "$( ruptime 2>/dev/null | awk '!/^ruptime:/ { print $1 }' )" \
-        -- "$cur" ) )
-
-    # Add results of normal hostname completion, unless
-    # `COMP_KNOWN_HOSTS_WITH_HOSTFILE' is set to an empty value.
-    if [[ -n ${COMP_KNOWN_HOSTS_WITH_HOSTFILE-1} ]]; then
-        COMPREPLY+=(
-            $( compgen -A hostname -P "$prefix$user" -S "$suffix" -- "$cur" ) )
-    fi
-
-    __ltrim_colon_completions "$prefix$user$cur"
-
-    return 0
-} # _known_hosts_real()
-
-
-# Get the word to complete and optional previous words.
-# This is nicer than ${COMP_WORDS[$COMP_CWORD]}, since it handles cases
-# where the user is completing in the middle of a word.
-# (For example, if the line is "ls foobar",
-# and the cursor is here -------->   ^
-# Also one is able to cross over possible wordbreak characters.
-# Usage: _get_comp_words_by_ref [OPTIONS] [VARNAMES]
-# Available VARNAMES:
-#     cur         Return cur via $cur
-#     prev        Return prev via $prev
-#     words       Return words via $words
-#     cword