#+title: ZSH Configuration
Set up completions.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  zstyle ':completion:*' completer _expand _complete _ignored _approximate
  zstyle ':completion:*' matcher-list '' 'm:{[:lower:]}={[:upper:]}' 'r:|[._-]=** r:|=**' 'l:|=* r:|=*'
  zstyle :compinstall filename '/home/jjanzen/.zshrc'
  autoload -U compinit promptinit
  compinit
  promptinit
#+end_src

Enable gentoo completions on Linux.
#+begin_src sh :tangle (cond ((eq system-type 'gnu/linux) "~/.zshrc") (t "no")) :mkdirp yes
  prompt gentoo
#+end_src

Set up the history with 1000 entries and ignored duplicate commands.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  HISTFILE=~/.histfile
  HISTSIZE=1000
  SAVEHIST=1000
  setopt hist_ignore_all_dups
#+end_src

Enable automatic =cd=.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  setopt autocd
#+end_src

Enable extended glob.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  setopt extendedglob
#+end_src

If a glob returns nothing, don't keep the =*=.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  setopt nullglob
#+end_src

Report the status of background jobs immediately.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  setopt notify
#+end_src

Disable the beep.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  unsetopt beep
#+end_src

Use =vi= keybindings.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  bindkey -v
#+end_src

Use =lesspipe= back end for =less= if it is installed.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  which lesspipe.sh &> /dev/null && export LESSOPEN="|lesspipe.sh %s"
#+end_src

Use =eza= as my =ls= command if it is installed.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  which eza &> /dev/null && alias ls=eza
#+end_src

Use Neovim as my =vi= and =vim= application if it is installed.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  which nvim &> /dev/null && alias vi=nvim && alias vim=nvim
#+end_src

If the Firefox binary is called =firefox-bin=, let =firefox= also run =firefox-bin=.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  which firefox-bin &> /dev/null && alias firefox=firefox-bin
#+end_src

Lazy =ls= shortcuts.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  alias ll='ls -alF'
  alias la='ls -a'
  alias l='ls -F'
  alias sl='ls'
#+end_src

*** Prompt
Define function to write out icons for the git status.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  parse_git_dirty() {
    git_status="$(git status 2> /dev/null)"
    [[ "$git_status" =~ "use \"git push\" to publish your local commits" ]] && echo -n " %F{green}%f"
    [[ "$git_status" =~ "Changes to be committed:" ]] && echo -n " %F{magenta}%f"
    [[ "$git_status" =~ "Changes not staged for commit:" ]] && echo -n " %F{yellow}%f"
    [[ "$git_status" =~ "Untracked files:" ]] && echo -n " %F{red}%f"
  }
#+end_src

Enable git status in the prompt.
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  setopt prompt_subst
  autoload -Uz vcs_info
  precmd () { vcs_info }
  zstyle ':vcs_info:*' formats ' %F{blue}%b%f' # git(main)
#+end_src

Define the prompt as follows:
- Error code (if applicable)
- Path using =~= for the home directory and truncating if too long
- Git branch
- Git status
- =$= to mark the start of the prompt
#+begin_src sh :tangle ~/.zshrc :mkdirp yes
  PS1='%(?..%B%F{red}[%?%\]%f%b )%F{green}%20<...<%~%<<%f$vcs_info_msg_0_$(parse_git_dirty) $ '
#+end_src