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Zsh Shell Configuration

Fast, modern shell setup with < 200ms startup time using Zinit and Starship.

Files

• zshrc - Main configuration with plugins
• zshenv - Environment variables
• aliases.zsh - 160+ command aliases
• starship.toml - Prompt configuration

Key Features

• < 200ms startup with Zinit turbo mode
• 4 essential plugins (syntax highlighting, autosuggestions, completions, zsh-z)
• Vi mode with visual feedback
• Smart completions with caching
• Starship prompt with git integration

Plugin Management

# Zinit with turbo mode (deferred plugins load after prompt)
zinit light zsh-users/zsh-completions          # Immediate (for first tab)
zinit wait lucid for fast-syntax-highlighting   # Deferred
zinit wait lucid for zsh-autosuggestions        # Deferred
zinit light agkozak/zsh-z                      # Deferred
# No OMZ plugins — curated aliases in aliases.zsh instead

Common Aliases

# Navigation
alias ..="cd .."
alias ls="eza --icons"

# Git
alias gs="git status"
alias gc="git commit"
alias gp="git push"

# Development
alias v="nvim"
alias py="python3"

Performance Tips

• Use zinit wait for deferred loading
• Profile with time zsh -i -c exit
• Clear widget conflicts before Starship init
• Compile completion cache with zicompinit

Lessons Learned

Vi Mode Recursion Fix

Both Starship and vi-mode define zle-keymap-select causing infinite recursion.

# Fix in zshrc (see the "zle-keymap-select" comment block near Starship init)
if (( ${+widgets[zle-keymap-select]} )); then
    zle -D zle-keymap-select 2>/dev/null
fi

Vi Mode Backspace Fix

Zsh vi mode binds backspace to vi-backward-delete-char, which can’t cross line boundaries or backspace past the insert-mode entry point. Fixed by binding backward-delete-char in viins:

# Fix in zshrc (see the "vi mode backspace" comment block)
bindkey -M viins '^?' backward-delete-char
bindkey -M viins '^H' backward-delete-char

This is the zsh equivalent of vim’s set backspace=indent,eol,start.

Why Not Oh-My-Zsh

• Adds 500ms+ to startup
• Bloated with unused features
• OMZ git plugin silently overrides curated aliases with wrong meanings
• Zinit is 10x faster with turbo mode

Failed Approaches

• Prezto - Still 300ms+ startup
• Antigen - No parallel loading
• Powerline - Python-based, very slow
• zcompile - Negligible improvement

Troubleshooting

Slow startup: Use zinit wait for plugins

Completions broken: Run rm -rf ~/.zcompdump* && exec zsh

Path duplicates: Add typeset -U path to zshenv

Debug: zsh -x -i -c exit 2>&1 | head -50

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