[zsh theme] Clean up code

midgard.zsh-theme

@@ -2,24 +2,26 @@
 
 function my_pwd {
 	# ~ for home; keep only the last two directories
-	echo $(echo "$PWD" | sed -r '
+	echo "$PWD" | sed -r '
 		s,^'"$HOME"',~,; t reset; :reset
 		s|^~/git/my-cool-project/([^/])[^/]+/([^/]+)/|\1/\2/|; t end
 		s|^.+/([^/]*/[^/]*)$|\1|
-		:end')
+		:end'
 }
 
 function my_retval {
 	RETVAL=$?
 
 	if [[ $RETVAL -eq 0 ]]; then
-		echo "%{$fg[yellow]%}"
+		echo "%{%F{yellow}%}"
 	else
-		echo "%{$fg[red]%}$RETVAL "
+		echo "%{%F{red}%}$RETVAL "
 	fi
 }
 
-PROMPT='$(my_retval)$(my_pwd)$(git_prompt_info)$(git_prompt_status) %{$reset_color%} '
+function precmd {
+	PS1="$(my_retval)$(my_pwd)$(git_prompt_info)$(git_prompt_status) %{%f%} "
+}
 
 ZSH_THEME_GIT_PROMPT_PREFIX=" %{$fg[green]%}  "
 ZSH_THEME_GIT_PROMPT_SUFFIX=""