tmux-net: trailing space after the ✕ offline glyph for status-bar padding

- tmux-ip: show the first directly-held public/WAN IP on a non-tunnel interface,
  else the LAN/private IP. No external 'what's my IP' lookup and no DigitalOcean
  special-case (a droplet's eth0 public IP is found by the same interface scan);
  RFC1918/link-local/CGNAT classed as not-WAN, so a NAT'd box shows its LAN IP.
- tmux-net: show ✕ when there's no local IP and no VPN tunnel (offline). VPN ⇡
  overlay unchanged.
- .tmux.conf: window-status icon + path now native tmux formats (no per-redraw
  #() forks); tmux-window-icon kept as fallback.

.claude/.gitignore

@@ -0,0 +1,33 @@
+# Never track Claude Code per-machine state, secrets, or chat data.
+#
+# settings.json IS tracked (portable user prefs + permissions allowlist).
+# Everything else under ~/.claude/ stays per-host: credentials, session
+# logs, project memories, file-edit history, telemetry, caches.
+
+# Auth — must NEVER be tracked
+.credentials.json
+
+# Per-machine settings overrides (by Claude Code convention)
+settings.local.json
+
+# Chat and session data
+history.jsonl
+sessions/
+projects/
+file-history/
+plans/
+
+# Caches and ephemeral state
+cache/
+downloads/
+paste-cache/
+shell-snapshots/
+session-env/
+backups/
+telemetry/
+mcp-needs-auth-cache.json
+
+# Plugin marketplace state — known_marketplaces.json IS portable, but the
+# resolved-plugin caches and the local blocklist are per-machine.
+plugins/blocklist.json
+plugins/marketplaces/

.claude/settings.json

@@ -0,0 +1,58 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(tmux source-file:*)",
+      "Bash(git:*)",
+      "Bash(curl:*)",
+      "Bash(sudo:*)",
+      "Bash(find:*)",
+      "Bash(ls:*)",
+      "Bash(cat:*)",
+      "Bash(systemctl:*)",
+      "Bash(sysctl:*)",
+      "Bash(crontab:*)",
+      "Bash(dig:*)",
+      "Bash(ulimit:*)",
+      "Bash(python3:*)",
+      "Bash(iptables:*)",
+      "Bash(ip6tables:*)",
+      "Bash(ufw status:*)",
+      "Bash(firewall-cmd:*)",
+      "Bash(apt list:*)",
+      "Bash(apt-get install:*)",
+      "Bash(apt-get upgrade:*)",
+      "Bash(dpkg:*)",
+      "Bash(fail2ban-client status:*)",
+      "Bash(fail2ban-client set:*)",
+      "Bash(aa-status)",
+      "Bash(getenforce)",
+      "Bash(mount)",
+      "Bash(netstat -tuln)",
+      "Bash(netstat -tlnp)",
+      "Bash(openssl x509:*)",
+      "Bash(openssl rand:*)",
+      "Bash(grep -v \"^$\")",
+      "Bash(du -sh /var/log/*)",
+      "Bash(lsmod)",
+      "Bash(xargs ls:*)",
+      "Bash(last:*)",
+      "Bash(nginx:*)",
+      "Bash(redis-cli:*)",
+      "Bash(rkhunter:*)",
+      "Bash(aideinit)",
+      "Bash(npm --version)",
+      "Bash(ruby --version)",
+      "Bash(getent passwd:*)",
+      "Bash(sqlite3:*)",
+      "Read(//home/**)",
+      "Read(//opt/**)",
+      "Read(//etc/nginx/sites-enabled/**)",
+      "Read(//etc/nginx/sites-available/**)"
+    ],
+    "defaultMode": "auto"
+  },
+  "theme": "dark-daltonized",
+  "verbose": true,
+  "tui": "fullscreen",
+  "skipAutoPermissionPrompt": true
+}

.local/bin/tmux-ip

@@ -1,33 +1,69 @@
 #!/bin/bash
 #
 # Print the "best" IP for the tmux status bar.
-# Preference: DO reserved/floating IP > public egress (ipify) > first local IP.
+#
+# Shows a directly-held public/WAN IP when the machine has one on an interface,
+# otherwise its LAN/private IP. No external "what's my IP" lookup -- a NAT'd box
+# shows its LAN IP, never the gateway's egress. Works the same everywhere: a box
+# with a public IP on a NIC (incl. a cloud droplet's eth0) shows that WAN IP; a
+# NAT'd box shows its LAN IP. The VPN overlay is added separately by tmux-net via
+# tmux-vpn-ip and is untouched here.
 #
 
 set -u
 
-META="http://169.254.169.254/metadata/v1"
-CURL="curl -sf --connect-timeout 1 --max-time 2"
-
-is_digitalocean() {
-  [ -r /sys/class/dmi/id/sys_vendor ] \
-    && grep -qi digitalocean /sys/class/dmi/id/sys_vendor
+# This machine's own non-loopback IPv4 addresses, one per line. VPN tunnels are
+# excluded (tmux-net surfaces the VPN address separately as the ⇡ segment).
+list_ipv4() {
+  if command -v ip >/dev/null 2>&1; then
+    ip -4 -o addr show scope global 2>/dev/null \
+      | awk '$2 !~ /^(tun|wg|ppp|tap)/ {print $4}' | cut -d/ -f1
+  elif hostname -I >/dev/null 2>&1; then
+    hostname -I 2>/dev/null | tr ' ' '\n'
+  else
+    ifconfig 2>/dev/null | awk '/inet /{print $2}'
+  fi | grep -E '^([0-9]{1,3}\.){3}[0-9]{1,3}$' | grep -v '^127\.'
 }
 
-do_anchor_ip() {
-  local kind active ip
-  for kind in reserved_ip floating_ip; do
-    active=$($CURL "$META/$kind/ipv4/active" 2>/dev/null) || continue
-    [ "$active" = "true" ] || continue
-    ip=$($CURL "$META/$kind/ipv4/ip_address" 2>/dev/null) || continue
-    [ -n "$ip" ] && { printf '%s\n' "$ip"; return 0; }
-  done
+# RFC1918 / link-local / CGNAT -- not a directly-routable WAN address.
+is_private_ipv4() {
+  case "$1" in
+    10.*|192.168.*|169.254.*) return 0 ;;
+    172.1[6-9].*|172.2[0-9].*|172.3[01].*) return 0 ;;
+    100.6[4-9].*|100.[7-9][0-9].*|100.1[01][0-9].*|100.12[0-7].*) return 0 ;;
+    *) return 1 ;;
+  esac
+}
+
+# First directly-held public/WAN IP, if the machine has one on an interface.
+public_ip() {
+  local ip
+  while IFS= read -r ip; do
+    [ -n "$ip" ] || continue
+    is_private_ipv4 "$ip" || { printf '%s\n' "$ip"; return 0; }
+  done <<EOF
+$(list_ipv4)
+EOF
   return 1
 }
 
-if is_digitalocean && do_anchor_ip; then
-  exit 0
+# Fallback: the machine's primary interface IP (covers macOS and odd setups).
+print_local_ip() {
+  local iface ip
+  if command -v ipconfig >/dev/null 2>&1; then
+    for iface in en0 en1 en2; do
+      ip=$(ipconfig getifaddr "$iface" 2>/dev/null) || true
+      [ -n "${ip:-}" ] && { printf '%s\n' "$ip"; return 0; }
+    done
   fi
+  if hostname -I >/dev/null 2>&1; then
+    hostname -I | awk '{print $1}'
+    return 0
+  fi
+  ifconfig 2>/dev/null | awk '/inet /{ if ($2 != "127.0.0.1") { print $2; exit } }'
+}
 
-curl -s --connect-timeout 3 https://api.ipify.org 2>/dev/null \
-  || hostname -I | awk '{print $1}'
+# A directly-held public/WAN IP if the box has one, else the LAN IP.
+ip=$(public_ip || true)
+[ -z "${ip:-}" ] && ip=$(print_local_ip)
+printf '%s\n' "${ip:-}"

.local/bin/tmux-net

@@ -0,0 +1,20 @@
+#!/bin/bash
+#
+# Emit the tmux status-bar network segment.
+#   No VPN:  "⌂ <local_ip>"
+#   VPN up:  "⌂ <local_ip> / ⇡ <vpn_ip>"
+#   Offline: "✕"   (no local IP and no VPN tunnel)
+#
+
+set -u
+
+local_ip=$("$HOME/.local/bin/tmux-ip" 2>/dev/null || true)
+vpn_ip=$("$HOME/.local/bin/tmux-vpn-ip" 2>/dev/null || true)
+
+if [ -z "${local_ip:-}" ] && [ -z "${vpn_ip:-}" ]; then
+  printf '\xe2\x9c\x95 \n'                                      # ✕  no active connection (trailing space for padding)
+elif [ -n "${vpn_ip:-}" ]; then
+  printf '\xe2\x8c\x82 %s / \xe2\x87\xa1 %s\n' "${local_ip:-}" "$vpn_ip"
+else
+  printf '\xe2\x8c\x82 %s\n' "${local_ip:-}"
+fi

.local/bin/tmux-vpn-ip

@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# Print the IPv4 of the first active VPN tunnel interface, if any.
+# Empty output when no VPN is up.
+#
+# macOS: utun*   Linux: tun*, wg*, ppp*
+
+set -u
+
+case "$(uname -s)" in
+  Darwin)
+    ifconfig 2>/dev/null | awk '
+      /^utun[0-9]+:/   { iface=$1; sub(":", "", iface); next }
+      /^[a-z]+[0-9]*:/ { iface="" }
+      iface != "" && $1 == "inet" { print $2; exit }
+    '
+    ;;
+  Linux)
+    if command -v ip >/dev/null 2>&1; then
+      ip -4 -o addr show 2>/dev/null \
+        | awk '$2 ~ /^(tun|wg|ppp)[0-9]+/ { sub("/.*","",$4); print $4; exit }'
+    fi
+    ;;
+esac

.tmux.conf

@@ -2,7 +2,20 @@
 set -g bell-action any
 
 # Default termtype. If the rcfile sets $TERM, that overrides this value.
-set -g default-terminal screen-256color
+set -g default-terminal "tmux-256color"
+
+# Truecolor + clipboard passthrough for outer terminals that advertise RGB
+# (covers xterm-*, alacritty, kitty, wezterm, iTerm, ghostty, modern Apple Terminal).
+set -ga terminal-features ",xterm-256color:RGB"
+set -ga terminal-features ",alacritty:RGB"
+set -ga terminal-features ",kitty:RGB"
+set -ga terminal-features ",wezterm:RGB"
+set -ga terminal-features ",ghostty:RGB"
+set -ga terminal-features ",screen-256color:RGB"
+
+# TUI apps (Claude Code, nvim, etc.) want focus events so they can redraw
+# / refresh state when the pane regains focus.
+set -g focus-events on
 
 # Keep your finger on ctrl, or don't
 bind-key ^D detach-client
@@ -66,9 +79,9 @@ set -g pane-border-style fg=colour245
 set -g pane-active-border-style fg=colour39
 set -g message-style fg=colour16,bg=colour221,bold
 set -g status-left '#[fg=colour235,bg=colour252,bold] ❐ #S #[fg=colour252,bg=colour238,nobold]❯#[fg=colour245,bg=colour238,bold] #(whoami) '
-set -g status-right '#[bold][#[nobold,fg=colour229]#H#[fg=default] / #[fg=colour229]#(~/.local/bin/tmux-ip)#[fg=default,bold]]#[nobold,fg=colour255] %H:%M %d-%b-%Y '
-set -g window-status-format '#[fg=colour235,bg=colour252,nobold] #(~/.local/bin/tmux-window-icon #{window_index}) #(pwd="#{pane_current_path}"; echo ${pwd####*/}) #W '
-set -g window-status-current-format '#[fg=colour234,bg=colour39,bold] [#[fg=colour232,bold]#{?window_zoomed_flag,#[fg=colour228],} #(~/.local/bin/tmux-window-icon #{window_index}) #(pwd="#{pane_current_path}"; echo ${pwd####*/}) #W #[fg=colour234,bold]] '
+set -g status-right '#[bold][#[nobold,fg=colour229]#h#[fg=default] / #[fg=colour229]#(~/.local/bin/tmux-net)#[fg=default,bold]]#[nobold,fg=colour255] %-I:%M%P %d-%b-%Y '
+set -g window-status-format '#[fg=colour235,bg=colour252,nobold] #{?#{==:#{window_index},1},❶,#{?#{==:#{window_index},2},❷,#{?#{==:#{window_index},3},❸,#{?#{==:#{window_index},4},❹,#{?#{==:#{window_index},5},❺,#{?#{==:#{window_index},6},❻,#{?#{==:#{window_index},7},❼,#{?#{==:#{window_index},8},❽,#{?#{==:#{window_index},9},❾,#{?#{==:#{window_index},10},❿,#{window_index}}}}}}}}}}} #{b:pane_current_path} #W '
+set -g window-status-current-format '#[fg=colour234,bg=colour39,bold] [#[fg=colour232,bold]#{?window_zoomed_flag,#[fg=colour228],} #{?#{==:#{window_index},1},❶,#{?#{==:#{window_index},2},❷,#{?#{==:#{window_index},3},❸,#{?#{==:#{window_index},4},❹,#{?#{==:#{window_index},5},❺,#{?#{==:#{window_index},6},❻,#{?#{==:#{window_index},7},❼,#{?#{==:#{window_index},8},❽,#{?#{==:#{window_index},9},❾,#{?#{==:#{window_index},10},❿,#{window_index}}}}}}}}}}} #{b:pane_current_path} #W #[fg=colour234,bold]] '
 set-option -g status-interval 60
 
 # Patch for OS X pbpaste and pbcopy under tmux.

README.md

@@ -102,6 +102,46 @@ On top of stock YADR:
 - Misc: `.rainbow_config.json` (rainbowstream), `.nanorc`, `.selected_editor`,
   `.mplayer/config`, `.jigdo-lite`
 
+## Rainbow output (lolcat)
+
+`zsh/lolcat.zsh` wires [lolcat](https://github.com/busyloop/lolcat) (Debian's
+`/usr/games/lolcat`, busyloop's Ruby build — 24-bit truecolor) into a few shell
+helpers. lolcat auto-detects a tty — it colorizes straight to the terminal but
+passes text through plain when piped onward, so use `-f`/`--force` to colorize
+mid-pipeline.
+
+### Opt-in, per command
+
+Prefix any command to rainbow its output:
+
+```sh
+lol fastfetch
+lol git log --oneline
+lol ls -C                 # -C keeps columns: a piped ls otherwise goes single-column
+lolf git diff | less -R   # force color so it survives down a pipeline
+```
+
+### Shortcuts
+
+```sh
+rcat file.txt             # rainbow cat
+rls -la                   # rainbow ls, columns preserved
+some-cmd | rless          # rainbow + pager (less -R)
+```
+
+### Session toggle
+
+Rainbow *all* shell stdout until you turn it off:
+
+```sh
+rainbow_on                # everything is rainbow now
+...
+rainbow_off               # back to normal
+```
+
+Novelty only: it garbles full-screen/interactive programs (vim, less, htop,
+fzf, ssh) and the prompt, and buffers streaming output. Doesn't touch stderr.
+
 ## Upstream
 
 Base is [skwp/dotfiles][yadr] (YADR — Yet Another Dotfiles Repo). All credit

Rakefile

@@ -210,7 +210,7 @@ def install_term_theme
   message = "Which theme would you like to apply to your iTerm2 profile?"
   color_scheme = ask message, iTerm_available_themes
 
-  return if color_scheme == 'None'
+  return if color_scheme.nil? || color_scheme == 'None'
 
   color_scheme_file = File.join('iTerm2', "#{color_scheme}.itermcolors")
 
@@ -220,6 +220,8 @@ def install_term_theme
   profiles << 'All'
   selected = ask message, profiles
 
+  return if selected.nil?
+
   if selected == 'All'
     (profiles.size-1).times { |idx| apply_theme_to_iterm_profile_idx idx, color_scheme_file }
   else
@@ -244,7 +246,12 @@ def ask(message, values)
   puts message
   while true
     values.each_with_index { |val, idx| puts " #{idx+1}. #{val}" }
-    selection = STDIN.gets.chomp
+    input = STDIN.gets
+    if input.nil?
+      puts "(no input available — skipping prompt)"
+      return nil
+    end
+    selection = input.chomp
     if (Float(selection)==nil rescue true) || selection.to_i < 0 || selection.to_i > values.size+1
       puts "ERROR: Invalid selection.\n\n"
     else

git/gitconfig

@@ -1,5 +1,8 @@
 # set your user tokens as environment variables, such as ~/.secrets
 # See the README for examples.
+[user]
+	name = dissimulo
+	email = connect+gitea@dustin-williams.com
 [color]
   ui = true
 [color "branch"]

install.sh

@@ -36,7 +36,7 @@ PERSONAL_FILES=(
 # untouched. This deliberately avoids wholesale-replacing $HOME/.local etc.,
 # which would sweep away unrelated user data (fonts, app state, ...).
 PERSONAL_DIRS=(
-  .fonts .irssi .nano .themes .local .mplayer
+  .fonts .irssi .nano .themes .local .mplayer .claude
 )
 
 have() { command -v "$1" >/dev/null 2>&1; }
@@ -162,11 +162,29 @@ log "Deploying personal dotfiles"
 for f in "${PERSONAL_FILES[@]}"; do deploy_file "$f"; done
 for d in "${PERSONAL_DIRS[@]}"; do deploy_dir "$d"; done
 
-# .local/bin/claude is a relative symlink to ../share/claude/versions/...
-# If that target isn't present on this machine, remove the dangling link so
-# Claude Code's own installer (next step) can manage it.
-if [ -L "$HOME/.local/bin/claude" ] && [ ! -e "$HOME/.local/bin/claude" ]; then
-  rm "$HOME/.local/bin/claude"
+# .local/bin/claude is a relative symlink to ../share/claude/versions/<version>.
+# The version baked into the repo snapshot is whatever was current when this
+# was last committed; on a fresh host that exact version probably isn't
+# installed. Resolve as follows:
+#   1. If the deployed symlink already resolves, leave it alone.
+#   2. Else, if any other Claude version is present under
+#      ~/.local/share/claude/versions/, repoint the symlink to the highest
+#      one (semver sort) so users get the latest installed binary.
+#   3. Else, drop the dangling link and let Claude Code's own installer
+#      (next step) recreate it.
+claude_link="$HOME/.local/bin/claude"
+claude_versions_dir="$HOME/.local/share/claude/versions"
+if [ -L "$claude_link" ] && [ ! -e "$claude_link" ]; then
+  latest_claude=""
+  if [ -d "$claude_versions_dir" ]; then
+    latest_claude="$(ls -1 "$claude_versions_dir" 2>/dev/null | sort -V | tail -1)"
+  fi
+  if [ -n "$latest_claude" ] && [ -e "$claude_versions_dir/$latest_claude" ]; then
+    ln -sfn "../share/claude/versions/$latest_claude" "$claude_link"
+    info "Repointed ~/.local/bin/claude -> $latest_claude (latest installed)"
+  else
+    rm "$claude_link"
+  fi
 fi
 
 # 4. Install Claude Code (Anthropic's CLI). Skip if already installed or

tmux/tmux.conf

@@ -1,102 +0,0 @@
-# Ring the bell if any background window rang a bell
-set -g bell-action any
-
-# Default termtype. If the rcfile sets $TERM, that overrides this value.
-set -g default-terminal screen-256color
-
-# Keep your finger on ctrl, or don't
-bind-key ^D detach-client
-
-# Create splits and vertical splits
-bind-key v split-window -h -p 50 -c "#{pane_current_path}"
-bind-key ^V split-window -h -p 50 -c "#{pane_current_path}"
-bind-key s split-window -p 50 -c "#{pane_current_path}"
-bind-key ^S split-window -p 50 -c "#{pane_current_path}"
-
-# Pane resize in all four directions using vi bindings.
-# Can use these raw but I map them to shift-ctrl-<h,j,k,l> in iTerm.
-bind -r H resize-pane -L 5
-bind -r J resize-pane -D 5
-bind -r K resize-pane -U 5
-bind -r L resize-pane -R 5
-
-# Smart pane switching with awareness of Vim splits.
-# See: https://github.com/christoomey/vim-tmux-navigator
-is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
-    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|n?vim?x?)(diff)?$'"
-bind-key -n 'C-h' if-shell "$is_vim" 'send-keys C-h'  'select-pane -L'
-bind-key -n 'C-j' if-shell "$is_vim" 'send-keys C-j'  'select-pane -D'
-bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k'  'select-pane -U'
-bind-key -n 'C-l' if-shell "$is_vim" 'send-keys C-l'  'select-pane -R'
-
-tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
-if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
-    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
-if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
-    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\\\'  'select-pane -l'"
-
-bind-key -T copy-mode-vi 'C-h' select-pane -L
-bind-key -T copy-mode-vi 'C-j' select-pane -D
-bind-key -T copy-mode-vi 'C-k' select-pane -U
-bind-key -T copy-mode-vi 'C-l' select-pane -R
-bind-key -T copy-mode-vi 'C-\' select-pane -l
-
-# Use vi keybindings for tmux commandline input.
-# Note that to get command mode you need to hit ESC twice...
-set -g status-keys vi
-
-# Use vi keybindings in copy and choice modes
-setw -g mode-keys vi
-
-# easily toggle synchronization (mnemonic: e is for echo)
-# sends input to all panes in a given window.
-bind e setw synchronize-panes on
-bind E setw synchronize-panes off
-
-# set first window to index 1 (not 0) to map more to the keyboard layout...
-set-option -g base-index 1
-set-window-option -g pane-base-index 1
-set-window-option -g mouse on
-
-# color scheme (styled as vim-powerline)
-set -g status-left-length 52
-set -g status-right-length 451
-set -g status-style fg=white,bg=colour234
-set -g pane-border-style fg=colour245
-set -g pane-active-border-style fg=colour39
-set -g message-style fg=colour16,bg=colour221,bold
-set -g status-left '#[fg=colour235,bg=colour252,bold] ❐ #S #[fg=colour252,bg=colour238,nobold]⮀#[fg=colour245,bg=colour238,bold] #(whoami) #[fg=colour238,bg=colour234,nobold]⮀'
-set -g window-status-format '#[fg=colour235,bg=colour252,bold] #I #(pwd="#{pane_current_path}"; echo ${pwd####*/}) #W '
-set -g window-status-current-format '#[fg=colour234,bg=colour39]⮀#[fg=black,bg=colour39,noreverse,bold] #{?window_zoomed_flag,#[fg=colour228],} #I #(pwd="#{pane_current_path}"; echo ${pwd####*/}) #W #[fg=colour39,bg=colour234,nobold]⮀'
-set-option -g status-interval 2
-
-# Patch for OS X pbpaste and pbcopy under tmux.
-set-option -g default-command "which reattach-to-user-namespace > /dev/null && reattach-to-user-namespace -l $SHELL || $SHELL"
-
-# Screen like binding
-unbind C-b
-set -g prefix C-a
-bind a send-prefix
-
-# No escape time for vi mode
-set -sg escape-time 0
-
-# Screen like binding for last window
-unbind l
-bind C-a last-window
-
-# Bigger history
-set -g history-limit 10000
-
-# New windows/pane in $PWD
-bind c new-window -c "#{pane_current_path}"
-
-# Fix key bindings broken in tmux 2.1
-set -g assume-paste-time 0
-
-# force a reload of the config file
-unbind r
-bind r source-file ~/.tmux.conf \; display "Reloaded!"
-
-# Local config
-if-shell "[ -f ~/.tmux.conf.user ]" 'source ~/.tmux.conf.user'

tmux/tmux.conf

@@ -0,0 +1 @@
+../.tmux.conf

zsh/diff.zsh

@@ -0,0 +1,13 @@
+# Eagerly define `diff` as a real function instead of relying on prezto's
+# autoload stub. The autoload stub emits
+#   "(eval):1: diff: function definition file not found"
+# in non-interactive eval contexts where $fpath doesn't yet include the
+# prezto utility module's functions directory. Defining a real function
+# here bypasses the autoload path entirely.
+function diff {
+  if (( $+commands[colordiff] )); then
+    command diff --unified "$@" | colordiff --difftype diffu
+  else
+    command diff --unified "$@"
+  fi
+}

zsh/lolcat.zsh

@@ -0,0 +1,33 @@
+# zsh/lolcat.zsh (drunkendotfiles) — auto-sourced via ~/.zshrc: for f in ~/.yadr/zsh/*.zsh
+# Rainbow-output helpers built on lolcat = Debian's busyloop Ruby build at
+# /usr/games/lolcat (upstream github.com/busyloop/lolcat; 24-bit truecolor).
+# It auto-detects a tty, so use -f/--force-color to colorize mid-pipeline.
+# This lolcat is truecolor and auto-detects a tty: it colorizes when writing
+# straight to the terminal, but passes text through UNcolored when piped onward,
+# so use -f/--force to colorize in the middle of a pipeline.
+
+# Debian ships lolcat in /usr/games; make sure it's reachable in any shell.
+[[ ":$PATH:" == *":/usr/games:"* ]] || export PATH="$PATH:/usr/games"
+
+# --- opt-in: prefix ANY command to rainbow its output on the terminal --------
+#   lol ls -C        lol fastfetch        lol git log --oneline
+# (The wrapped command sees a pipe, not a tty, so some tools drop their own
+#  colors/columns -- e.g. use `lol ls -C` to keep ls in columns.)
+lol()  { "$@" | lolcat; }
+
+# Same, but force color so it survives further down a pipeline:
+#   lolf git diff | less -R
+lolf() { "$@" | lolcat -f; }
+
+# --- handy rainbow shortcuts for plain-text output ---------------------------
+rcat()  { lolcat "$@"; }              # rcat file.txt   (or:  some-cmd | rcat)
+rls()   { ls -C "$@" | lolcat; }      # rainbow ls, columns preserved
+rless() { lolcat -f | less -R; }      # pipe into me:   some-cmd | rless
+
+# --- whole-session "rainbow everything" toggle (NOVELTY) ---------------------
+# Pipes the shell's stdout through lolcat until turned off. It WILL garble
+# full-screen/interactive programs (vim, less, htop, fzf, ssh) and your prompt,
+# and buffers streaming output. Use it for a burst of plain command output,
+# then rainbow_off. Does not affect stderr.
+rainbow_on()  { [[ -n $RAINBOW_PIPE ]] && return; exec 3>&1; exec > >(lolcat -f); export RAINBOW_PIPE=1; }
+rainbow_off() { [[ -z $RAINBOW_PIPE ]] && return; exec 1>&3 3>&-; unset RAINBOW_PIPE; }

zsh/prezto-override/zshrc

@@ -1,3 +1,4 @@
 source $HOME/.zprezto/runcoms/zshrc
 
 for config_file ($HOME/.yadr/zsh/*.zsh) source $config_file
+export PATH="$HOME/.local/bin:$PATH"