Почистил и ускорил zsh

zsh/title.zsh

@@ -0,0 +1,30 @@
+function title {
+	emulate -L zsh
+	setopt prompt_subst
+
+	[[ "$EMACS" == *term* ]] && return
+
+	# if $2 is unset use $1 as default
+	# if it is set and empty, leave it as is
+	: ${2=$1}
+
+	case "$TERM" in
+	 xterm*|putty*|rxvt*|konsole*|ansi|mlterm*|alacritty|kitty|wezterm|st*)
+		 print -Pn "\e]2;${2:q}\a" # set window name
+		 print -Pn "\e]1;${1:q}\a" # set tab name
+		 ;;
+	 screen*|tmux*)
+		 print -Pn "\ek${1:q}\e\\" # set screen hardstatus
+		 ;;
+	 *)
+	 # Try to use terminfo to set the title
+	 # If the feature is available set title
+	 if [[ -n "$terminfo[fsl]" ]] && [[ -n "$terminfo[tsl]" ]]; then
+		 echoti tsl
+		 print -Pn "$1"
+		 echoti fsl
+	 fi
+		 ;;
+	esac
+}
+