Static emoji for every wezterm pane/tab

.wezterm.lua

-- most of the heavy lifting provided by https://gist.github.com/gsuuon/5511f0aa10c10c6cbd762e0b3e596b71
-- here is my only adaptation to add the active pane emoji to the tab bar:

local function tab_title(tab_info)
  local title = tab_info.tab_title
  local icon = tab_info.active_pane.user_vars.ICON
  if icon then
    return icon .. ' ' .. tab_info.active_pane.title:gsub("%.exe", "")
  else
    return tab_info.active_pane.title:gsub("%.exe", "")
  end
end

.zshrc

# You will need the `pure` prompt for this to work: https://github.com/sindresorhus/pure
# oh, and the wezterm shell integration too: https://wezfurlong.org/wezterm/shell-integration.html

ICONS=(😈 💀 🤡 👻 👽 👾 🤖 😺 💋 💥 🦥 🐣 🐧 🐸 🐢 🐍 🐳 🌴 🍉 🍎 🍒 🥝 🥥 🥨 🍕 ☕ 🚨 🚀 🛸 🪐 🌠 🌙 🌞 🌈 ⚡ 🔥 💧 ✨ 🎉 💎 💾 📎 💣 📡)
export PURE_PROMPT_SYMBOL="$(shuf -n1 -e "${ICONS[@]}")"
__wezterm_set_user_var "ICON" $PURE_PROMPT_SYMBOL

Each new pane gets assigned a random emoji. The emoji of the currently active pane is reflected in the tab bar.