Added zsh

dot_zshrc

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+# Put ZSH dotfiles into "~/.config/zsh"
+export ZDOTDIR="$HOME/.config/zsh"
+source "$ZDOTDIR/.zshrc"

private_dot_config/zsh/alias.zsh

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+alias ls="ls --color --group-directories-first"
+alias l="ls -l --almost-all --human-readable"

private_dot_config/zsh/dot_zshrc

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+source "$ZDOTDIR/history.zsh"
+source "$ZDOTDIR/alias.zsh"
+source "$ZDOTDIR/plugins.zsh"
+
+# Bind Ctrl-left/right arrow to move back/formward one word
+# https://unix.stackexchange.com/a/140499
+bindkey "^[[1;5C" forward-word
+bindkey "^[[1;5D" backward-word
+
+# Enable the autocompletion and make it case insensitive
+# https://superuser.com/a/1092328
+autoload -U compinit && compinit
+zstyle ":completion:*" matcher-list "m:{a-z}={A-Za-z}"
+
+# Load `ls` color when autocompleting directories
+# https://unix.stackexchange.com/a/447002
+eval "$(dircolors)"
+zstyle ':completion:*' list-colors ${(s.:.)LS_COLORS}

private_dot_config/zsh/history.zsh

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+# Define the history file path
+HISTFILE="$HOME/.cache/zsh/.zsh_history"
+[ ! -d "$HOME/.cache/zsh" ] && mkdir -p "$HOME/.cache/zsh"
+[ ! -f "$HISTFILE" ] && touch $HISTFILE
+
+HISTSIZE=5000
+SAVEHIST=$HISTSIZE
+
+HISTDUP=erase
+setopt appendhistory
+setopt sharehistory
+setopt hist_ignore_space
+setopt hist_ignore_all_dups
+setopt hist_save_no_dups
+setopt hist_ignore_dups
+setopt hist_find_no_dups

private_dot_config/zsh/plugins.zsh

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+# Zinit package manager
+# https://github.com/zdharma-continuum/zinit
+ZINIT_HOME="${XDG_DATA_HOME:-${HOME}/.local/share}/zinit/zinit.git"
+[ ! -d $ZINIT_HOME ] && mkdir -p "$(dirname $ZINIT_HOME)"
+[ ! -d $ZINIT_HOME/.git ] && git clone https://github.com/zdharma-continuum/zinit.git "$ZINIT_HOME"
+source "${ZINIT_HOME}/zinit.zsh"
+
+# Syntax highlighting
+zinit ice depth=1; zinit light "zsh-users/zsh-syntax-highlighting"
+
+# Command completions
+zinit ice depth=1; zinit light "zsh-users/zsh-completions"
+
+# History autosuggestions
+zinit ice depth=1; zinit light "zsh-users/zsh-autosuggestions"
+
+# Use fzf for completion
+zinit ice depth=1; zinit light "Aloxaf/fzf-tab"
+zstyle ":fzf-tab:complete:cd:*" fzf-preview "ls --color $realpath"
+zstyle ":completion:*" menu no