Configure zsh

.bash_logout

@@ -1,6 +1,3 @@
 # Executed by bash when a login shell exits
 
-# Clear the screen to increase privacy
-if [ "$SHLVL" = 1 ]; then
-    [ -x /usr/bin/clear ] && /usr/bin/clear || [ -x /usr/bin/clear_console ] && /usr/bin/clear_console -q
-fi
+source "$HOME/.config/shell/logout.sh"

.config/shell/README.md

@@ -1,3 +1,3 @@
 # Shell-related Configuration
 
-This folder contains further files that are sourced by `bash`.
+This folder contains further files that are sourced by `bash` and `zsh`.

.config/shell/aliases.sh

@@ -1,14 +1,34 @@
-# Shell aliases for bash
+# Shell aliases for bash and zsh
 
 
 _command_exists() {
     command -v "$1" 1>/dev/null 2>&1
 }
 
+_in_zsh() {
+    [ -n "$ZSH_VERSION" ]
+}
 
 
 # Re-run last command with sudo privileges
-alias ,,='sudo $(history -p !!)'
+if _in_zsh; then
+    alias ,,='sudo $(fc -ln -1)'
+else
+    alias ,,='sudo $(history -p !!)'
+fi
+
+
+# Convenient piping with zsh
+if _in_zsh; then
+    alias -g B='| bat'
+    alias -g F='| fzf'
+    alias -g G='| grep'
+    alias -g H='| head'
+    alias -g L='| less'
+    alias -g T='| tail'
+    alias -g NE='2 > /dev/null'
+    alias -g NUL='> /dev/null 2>&1'
+fi
 
 
 # (Non-)obvious synonyms

.config/shell/logout.sh

@@ -0,0 +1,6 @@
+# This file is sourced by a login shell upon logout
+
+# Clear the screen to increase privacy
+if [ "$SHLVL" = 1 ]; then
+    [ -x /usr/bin/clear ] && /usr/bin/clear || [ -x /usr/bin/clear_console ] && /usr/bin/clear_console -q
+fi

.config/shell/utils.sh

@@ -5,6 +5,10 @@ _command_exists() {
     command -v "$1" 1>/dev/null 2>&1
 }
 
+_in_zsh() {
+    [ -n "$ZSH_VERSION" ]
+}
+
 
 
 # Configure the keyboard:
@@ -209,11 +213,17 @@ _update_repositories() {
     cwd=$(pwd)
     cd $REPOS
 
+    # Otherwise the for-loop waites for manual input
+    # if it cd's into a folder with a ".env" file
+    ZSH_DOTENV_FILE='.do_not_run_dotenv'
+
     for dir in */; do
         cd "$REPOS/$dir" && echo "Fetching $REPOS/$dir"
         git fetch --all --prune
     done
 
+    ZSH_DOTENV_FILE='.env'
+
     _command_exists pass && echo "Fetching $HOME/.password-store" && pass git pull
     _update_dotfiles
 
@@ -232,6 +242,44 @@ _update_dotfiles() {
 }
 
 
+_update_zsh() {
+    _in_zsh || return
+
+    echo 'Updating zsh'
+    _update_omz_fork
+    _update_zplug
+}
+
+_update_omz_fork() {
+    _command_exists omz || return
+
+    # In a nutshell, `omz update` pulls the latest origin/master
+    # from the original "oh-my-zsh" repo
+    omz update
+
+    cwd=$(pwd)
+    cd $ZSH
+
+    git checkout --quiet forked  # most likely already the case
+
+    # Keep our personal "oh-my-zsh" fork up-to-date
+    # See: https://gitlab.webartifex.biz/alexander/oh-my-zsh
+    git rebase --quiet master
+    git push --quiet fork forked
+    git push --quiet fork master
+
+    cd $cwd
+}
+
+_update_zplug() {
+    _command_exists zplug || return
+
+    zplug update
+    zplug install  # ensure newly added plugins in ~/.zshrc are never forgotten
+    zplug load
+}
+
+
 update-machine() {
     sudo --validate || return
 
@@ -240,6 +288,7 @@ update-machine() {
     _command_exists flatpak && sudo flatpak update -y
     _command_exists snap && sudo snap refresh && _remove_old_snaps
     _update_repositories
+    _update_zsh
 
     sudo --reset-timestamp
 }

.profile

@@ -27,6 +27,9 @@ prepend-to-path "$HOME/.local/bin"
 
 # Shell-specific stuff
 
+# zsh-specific stuff is automatically sourced from
+# ~/.zshenv, ~/.zprofile, ~/.zlogin, and ~/.zshrc
+
 # Source ~/.bashrc if we are running inside a bash shell
 # because it is NOT automatically sourced by bash
 if [ -n "$BASH_VERSION" ]; then

.zlogout

@@ -0,0 +1,3 @@
+# Executed by zsh when a login shell exits
+
+source "$HOME/.config/shell/logout.sh"

.zprofile

@@ -0,0 +1,5 @@
+# Executed by zsh when a login shell starts
+
+# Unify ~/.profile and ~/.zprofile conceptually
+# (~/.zlogin is skipped here as it is sourced after ~/.zshrc)
+source "$HOME/.profile"

.zshenv

@@ -0,0 +1,35 @@
+# This file is sourced by zsh before ~/.zprofile and ~/.zshrc
+# (it's kind of a zsh-only ~/.profile file)
+
+
+export ZSH="$HOME/.oh-my-zsh"
+export ZPLUG_HOME="$HOME/.zplug"
+
+
+# Use <Up> key to auto-complete a partially typed command
+# TODO: the coloring does not work when zsh-syntax-highlighting is loaded simultaniously
+# Source: https://github.com/zsh-users/zsh-history-substring-search/issues/131
+export HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND="fg=#ffffff,bg=#38761d,bold"
+export HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND="fg=#ffffff,bg=#990000,bold"
+
+
+# Notify about shorter aliases for typed commands
+# Source: https://github.com/MichaelAquilina/zsh-you-should-use
+export YSU_MESSAGE_POSITION="before"
+export YSU_MODE="BESTMATCH"
+
+
+# Suggest commands as one types
+# Source: https://github.com/zsh-users/zsh-autosuggestions
+export ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE="fg=#666666,bg=bold"
+export ZSH_AUTOSUGGEST_STRATEGY=(history completion)
+
+
+# Temporary files should go into ~/.cache
+export ZSH_COMPDUMP="${XDG_CACHE_HOME:-$HOME/.cache}/.zcompdump-$HOST-$ZSH_VERSION"
+
+
+# Automatically source ".env" files in folders
+# Source: https://github.com/ohmyzsh/ohmyzsh/tree/master/plugins/dotenv
+export ZSH_DOTENV_FILE=".env"
+

.zshrc

@@ -0,0 +1,154 @@
+# Executed by zsh when a (non-)login shell starts
+
+
+# Ensure zsh is running interactively
+[[ $- != *i* ]] && return
+
+
+
+# Enable Powerlevel10k instant prompt
+if [ -r "${XDG_CACHE_HOME:-$HOME/.cache}/zsh/p10k-instant-prompt-${(%):-%n}.zsh" ]; then
+    source "${XDG_CACHE_HOME:-$HOME/.cache}/zsh/p10k-instant-prompt-${(%):-%n}.zsh"
+fi
+
+
+
+# Enable XON/XOFF software flow control
+stty -ixon
+
+# Enable colors and change prompt
+autoload -Uz colors
+colors
+
+# Enable VI mode
+bindkey -v
+
+# If an entered command does not exist per se
+# but is the name of a folder instead, go there
+setopt AUTO_CD
+
+# Treat "#", "~", and "^" as part of patterns for filename generation
+setopt EXTENDED_GLOB
+# Warn if there are no matches
+setopt NO_MATCH
+
+# Silence the shell
+setopt NO_BEEP
+
+# Report status of background jobs immediately
+setopt NOTIFY
+
+# Remove all "built-in" aliases
+unalias -a
+
+
+
+# Set these environment variables here (and not in ~/.profile)
+# due to conflict/overlap with bash
+export HISTFILE="$HOME/.zhistory"  # default name by oh-my-zsh
+export HISTSIZE=999999             # number of lines kept in memory
+export SAVEHIST=999999             # number of lines kept in $HISTFILE
+
+# Append to the $HISTFILE rather than overwrite it
+setopt APPEND_HISTORY
+
+
+
+# Initialize oh-my-zsh's plugins
+
+plugins=(
+    command-not-found
+    dirhistory
+    dotenv             # config in ~/.zshenv; `_update_repositories` temporarily disables this
+    git-escape-magic
+    jsontools
+    z
+)
+
+source "$ZSH/oh-my-zsh.sh"
+
+
+
+# Initialize zplug's plugins
+
+source "$HOME/.zplug/init.zsh"  # config in ~/.zshenv
+
+# Must use double quotes in this section
+# Source: https://github.com/zplug/zplug#example
+
+# Make zplug manage itself like a plugin
+# Source: https://github.com/zplug/zplug#let-zplug-manage-zplug
+zplug "zplug/zplug", hook-build:"zplug --self-manage"
+
+zplug "MichaelAquilina/zsh-you-should-use"  # config in ~/.zshenv
+
+zplug "zsh-users/zsh-autosuggestions"  # config in ~/.zshenv
+zplug "zsh-users/zsh-history-substring-search"  # config in ~/.zshenv; there are key bindings below
+zplug "zsh-users/zsh-syntax-highlighting"
+
+zplug "romkatv/powerlevel10k", as:theme, depth:1
+
+zplug load
+
+
+
+# Initialize various utilities and aliases
+source "$HOME/.config/shell/utils.sh"
+source "$HOME/.config/shell/aliases.sh"
+
+
+
+# Initialize zsh's completions
+
+# This is already done via ~/.oh-my-zsh.sh above
+# autoload -Uz compinit
+# compinit -u -d "$ZSH_COMPDUMP"
+
+# Enable match highlighting and scrolling through long lists,
+# and provide a different style of menu completion
+zmodload zsh/complist
+
+# Include hidden files in tab completion
+_comp_options+=(GLOB_DOTS)
+
+# Enable arrow-key driven interface
+zstyle ':completion:*' menu select
+
+# Make compinit find new executables right away
+zstyle ':completion:*' rehash true
+
+# Enable grouping and group headers
+zstyle ':completion:*:descriptions' format '%B%d%b'
+zstyle ':completion:*:messages' format '%d'
+zstyle ':completion:*:warnings' format 'No matches for: %d'
+zstyle ':completion:*' group-name ''
+
+
+
+# Define key bindings
+
+# zsh-autosuggestions plugin
+bindkey "^ " autosuggest-accept
+
+# Enable Ctrl-R
+bindkey "^R" history-incremental-search-backward
+
+# Use VI keys to navigate the completions in the menu
+bindkey -M menuselect 'h' vi-backward-char
+bindkey -M menuselect 'k' vi-up-line-or-history
+bindkey -M menuselect 'l' vi-forward-char
+bindkey -M menuselect 'j' vi-down-line-or-history
+
+# history-substring-search plugin
+# Source: https://github.com/zsh-users/zsh-history-substring-search#usage
+# Normal mode
+bindkey "$terminfo[kcuu1]" history-substring-search-up
+bindkey "$terminfo[kcud1]" history-substring-search-down
+# VI mode
+bindkey -M vicmd 'k' history-substring-search-up
+bindkey -M vicmd 'j' history-substring-search-down
+
+
+
+# Enable Powerlevel10k "full" prompt
+[[ ! -f ~/.p10k.zsh ]] || source ~/.p10k.zsh