Zsh dev shell bootstrap

zshell-dev-bootstrap.sh

#!/usr/bin/env zsh
# Zsh bootstrap script
# See: https://chatgpt.com/share/67206e10-24f8-800c-9b0e-cfc4998e4960

# Function to append or create file based on user confirmation
update_file() {
  local file=$1
  local content=$2

  if [ -e "$file" ]; then
    read -q "?$file already exists. Append/update it? (y/n) " choice
    echo
    if [[ $choice =~ ^[Yy]$ ]]; then
      print "Updating $file..."
      print -r -- "$content" >> "$file"
    else
      print "Skipping $file..."
    fi
  else
    print "Creating $file..."
    print -r -- "$content" > "$file"
  fi
}

# ---- Update ~/.zshrc ----

zshrc_content=$(cat << 'EOF'
# Set vim as the default editor
export EDITOR=vim

# Alias for hidden files in 'ls'
alias la="ls -lAh"

# Common aliases (uncomment as needed)
# alias ll="ls -alF"
# alias l="ls -CF"
# alias grep="grep --color=auto"
# alias cls="clear"
alias ..="cd .."
alias ...="cd ../.."

# Use vi-mode in Zsh
bindkey -v

# Use up/down arrow to search history for prefix
bindkey '^[[A' history-beginning-search-backward
bindkey '^[[B' history-beginning-search-forward

# Share history across all sessions, and append immediately
HISTFILE=~/.zsh_history
HISTSIZE=10000
SAVEHIST=10000
setopt inc_append_history
setopt share_history

# Initialize completion system
autoload -Uz compinit && compinit

# Enable extended globbing (optional)
setopt extended_glob

# Edit current command in $EDITOR via 'v' in vi-command mode
autoload -Uz edit-command-line
zle -N edit-command-line
bindkey -M vicmd 'v' edit-command-line
EOF
)
update_file ~/.zshrc "$zshrc_content"

# ---- Update ~/.tmux.conf ----

tmux_conf_content=$(cat << 'EOF'
# Enable 256 (or higher) color support
set -g default-terminal "screen-256color"

# Use Ctrl+a instead of Ctrl+b
unbind C-b
set -g prefix C-a
bind C-a send-prefix

# Vi-style pane navigation
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# Pane splits
bind | split-window -h
bind - split-window -v

# Vi keys in copy mode
setw -g mode-keys vi

# Copy-mode bindings
bind-key -T copy-mode-vi v send-keys -X begin-selection
bind-key -T copy-mode-vi y send-keys -X copy-selection
bind-key -T copy-mode-vi r send-keys -X rectangle-toggle
EOF
)
update_file ~/.tmux.conf "$tmux_conf_content"

# ---- Completion ----

print "\nDone! To apply your new Zsh settings, run:"
print "  source ~/.zshrc"
print "\nTo apply tmux changes, either start a new session or:"
print "  tmux source-file ~/.tmux.conf"