zshrc

#!/usr/bin/zsh

# $ZDOTDIR/.zshrc
#
# Executes user's commands whenever ZSH is stared as an interactive
# shell.

# Enable completion
autoload -Uz compinit

case "$TERM" in
    "dumb")
        # Prevents Emacs TRAMP from choking
        # https://stackoverflow.com/a/8363532
        PS1="> "
        ;;
    xterm*|rxvt*|eterm*|screen*|alacritty)
        PS1="[%n@%M %~]%# "
        ;;
    *)
        PS1="> "
        ;;
esac

# `fish`-like syntax highlighting
source /usr/share/zsh/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh

# Auto-rehash whenever pacman installs something
# See: https://wiki.archlinux.org/index.php/Zsh#On-demand_rehash
zshcache_time="$(date +%s%N)"
autoload -Uz add-zsh-hook
rehash_precmd() {
  if [[ -a /var/cache/zsh/pacman ]]; then
    local paccache_time="$(date -r /var/cache/zsh/pacman +%s%N)"
    if (( zshcache_time < paccache_time )); then
      rehash
      zshcache_time="$paccache_time"
    fi
  fi
}
add-zsh-hook -Uz precmd rehash_precmd

zstyle ':completion:*:*:git:*' script "$HOME/.config/git-completion.zsh"