function()                      # Keep local variables in here.
{

############################## Completion ######################################

zmodload zsh/complist
autoload -Uz compinit && compinit -d ${ZSH_CACHE_DIR}/zcompdump

setopt ALWAYS_TO_END COMPLETE_IN_WORD GLOB_COMPLETE LIST_PACKED NO_LIST_BEEP

zmodload zsh/zutil
zmodload zsh/complist
# Configure completions.
zstyle ':completion:*' use-cache on
zstyle ':completion:*' cache-path ${ZSH_CACHE_DIR}/zcompcache
zstyle ':completion:*' menu select
zstyle ':completion:*:default' list-colors ${(s.:.)LS_COLORS}
zstyle ':completion:*' completer _extensions _complete _approximate _ignored
# Next line is hyphen- and case-insensitive, partial-word and substring
# completion, copied from oh-my-zsh.
zstyle ':completion:*' matcher-list 'm:{a-zA-Z-_}={A-Za-z_-}' 'r:|=*' 'l:|=* r:|=*'
zstyle ':completion:*' file-sort modification      # access didn't work.
zstyle ':completion:*' sort false                  # Needed for file-sort.
zstyle ':completion:*:processes' command "ps -u $USER -o pid,user,comm,cmd -w -w"
zstyle ':completion:*' complete-options true

compdef '_dispatch git git' config # git completions for config.

autoload -Uz +X bashcompinit && bashcompinit

############################# History ##########################################
HISTSIZE=50000                  # In memory.
SAVEHIST=10000                  # On disk.
# Write command to history file after it is finished, with time and duration.
setopt NO_SHARE_HISTORY EXTENDED_HISTORY INC_APPEND_HISTORY_TIME
setopt HIST_EXPIRE_DUPS_FIRST HIST_IGNORE_DUPS
setopt HIST_IGNORE_SPACE HIST_REDUCE_BLANKS HIST_VERIFY HIST_FCNTL_LOCK

# Import new commands from the history file
function _my_import_history_zshaddhistory()
{
    fc -RI
    return 0
}
autoload -Uz add-zsh-hook
add-zsh-hook zshaddhistory _my_import_history_zshaddhistory

############################## Plugins #########################################

# https://github.com/zsh-users/zsh-syntax-highlighting/blob/master/docs/highlighters.md
ZSH_HIGHLIGHT_HIGHLIGHTERS=(main brackets)
ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE="fg=237"

for plugin in ${(@s/ /)ZSH_PLUGIN_DIST}; do
    [[ -n ${plugin} ]] && source ${plugin}
done
unset plugin
[[ -n ${ZSH_PLUGIN_SOURCE} ]] && source ${ZSH_PLUGIN_SOURCE}

# Fuzzy finder, <https://github.com/junegunn/fzf>.
export FZF_CTRL_R_OPTS="--layout=reverse"
if [[ -f /usr/share/fzf/key-bindings.zsh ]]; then # Current Gentoo path.
    source /usr/share/fzf/key-bindings.zsh
elif [[ -f /usr/share/fzf/fzf.zsh ]]; then
    source /usr/share/fzf/fzf.zsh
elif [[ -f /usr/share/zsh/site-contrib/fzf.zsh ]]; then
    source /usr/share/zsh/site-contrib/fzf.zsh
fi

# <https://github.com/Aloxaf/fzf-tab/wiki/Configuration>
zstyle ':fzf-tab:*' fzf-command ftb-tmux-popup
zstyle ':fzf-tab:complete:*:*' popup-pad 200 2 # Add padding [right, bottom]

zstyle ':completion:*:descriptions' format '%F{green}[%d]%f'
zstyle ':fzf-tab:*' show-group none
zstyle ':fzf-tab:*' prefix ''

# Use C-x h to get possible contexts for a command
zstyle ':fzf-tab:complete:(ls|rmdir|grep):argument-rest' fzf-preview 'ls -1 --color=always $realpath'
zstyle ':fzf-tab:complete:cd:*' fzf-preview 'ls -1 --color=always $realpath'
zstyle ':fzf-tab:complete:rg:operand-argument-rest' fzf-preview 'ls -1 --color=always $realpath'
zstyle ':fzf-tab:complete:(less|cat):argument-rest' fzf-preview 'less $realpath'
zstyle ':fzf-tab:complete:emacsclient:*' fzf-preview 'less $realpath'
zstyle ':fzf-tab:complete:(lessp|evince|mpv|cp|mv):*argument-rest' fzf-preview 'LESSOPEN="|lesspipe %s" less $realpath'
zstyle ':fzf-tab:complete:file:*' fzf-preview 'file --brief $realpath'
zstyle ':fzf-tab:complete:git-log:argument-1' fzf-preview 'git log --color=always $word'
zstyle ':fzf-tab:complete:git-show:argument-rest' fzf-preview 'git show --color=always $word'
zstyle ':fzf-tab:complete:git-(add|diff|restore):argument-1' fzf-preview 'git diff --color=always $word'
zstyle ':fzf-tab:complete:man:*' fzf-preview 'whatis -l $word | cut -d- -f2,3,4,5,6'

[[ -v ASYNC_VERSION && ${ASYNC_INIT_DONE} -eq 0 ]] && async_init

################################################################################

# Directory options
setopt AUTO_CD AUTO_PUSHD PUSHD_IGNORE_DUPS PUSHD_MINUS
# Various options
setopt CORRECT_ALL NO_FLOW_CONTROL INTERACTIVE_COMMENTS LONG_LIST_JOBS
setopt REMATCH_PCRE PROMPT_SUBST

zmodload zsh/terminfo

# Test for the title setting capability (To Status Line)
if echoti tsl > /dev/null 2>&1; then
    # Write some info to terminal title.
    # This is seen when the shell prompts for input.
    function _my_title_precmd() {
        print -Pn "\e]0;%m: %(1j,%j job%(2j|s|); ,)%~\a"
    }
    add-zsh-hook precmd _my_title_precmd
    # Write command and args to terminal title.
    # This is seen while the shell waits for a command to complete.
    function _my_title_preexec() {
        local _my_jobs_dir
        print -Pnv _my_jobs_dir "%(1j,%j job%(2j|s|); ,)%~"
        printf "\e]0;%s: %s; %s\a" ${HOST} ${1} ${_my_jobs_dir}
    }
    add-zsh-hook preexec _my_title_preexec
fi

# Translate TrueColor to 256 colors if the terminal doesn't support it
[[ ${COLORTERM} == *(truecolor|24bit)* ]] || zmodload zsh/nearcolor

# emacsclient 27 (TODO: check later versions) needs this for TrueColor
if type emacsclient >& - \
       && [[ ${TERM#*-} == "256color" ]] \
       && [[ ${COLORTERM} == *(truecolor|24bit)* ]] \
       && [[ -f "/usr/share/terminfo/${TERM[1]}/${TERM%-*}-direct" ]]; then
    alias $(command -v emacsclient)="TERM=${TERM%-*}-direct $(command -v emacsclient)"
    if type emacsclient >& -; then
        alias $(command -v emacsremote)="TERM=${TERM%-*}-direct $(command -v emacsremote)"
    fi
fi

[[ ${COLORTERM} == *(truecolor|24bit)* ]] && export NVIM_TUI_ENABLE_TRUE_COLOR=1

export GPG_TTY=$(tty)

case ${TERM} in
    (dumb)                      # Emacs shells and TRAMP.
        unsetopt ZLE

        if [[ ${INSIDE_EMACS} == *tramp* ]]; then
            HISTFILE="/dev/null"
        fi

        alias less='cat'
        alias more='cat'
        export PAGER='cat'
        ;;
esac

# Host specific settings.
case $(hostname) in
    schnibble | gaffer | localhost)
        function sudo() {
            su -c "${*}"
        }
        DEFAULT_USER="u0_a197"
        ;;
esac

[[ -f ${ZDOTDIR}/keys.zsh ]] && source ${ZDOTDIR}/keys.zsh
[[ -f ${ZDOTDIR}/aliases.zsh ]] && source ${ZDOTDIR}/aliases.zsh
[[ -d ${ZDOTDIR}/functions ]] && autoload -Uz ${ZDOTDIR}/functions/*
[[ -f ${ZDOTDIR}/themes/syntax-tastytea.zsh ]] && source ${ZDOTDIR}/themes/syntax-tastytea.zsh
[[ -f ${ZDOTDIR}/local.zsh ]] && source ${ZDOTDIR}/local.zsh

zstyle ':vcs_info:*' enable            git svn hg # vcs_info_printsys
zstyle ':vcs_info:*' check-for-changes true
DEFAULT_USER=${DEFAULT_USER:-tastytea}
autoload -U promptinit && promptinit
prompt tastytea

return 0

}