Added a small polyfill section

fish_prompt.fish

@@ -6,12 +6,38 @@ function __caret_color
 	end
 end
 
-
 function fish_prompt
-	echo (set_color -o cyan)(whoami)(set_color normal)(set_color yellow)@(set_color -o blue)(hostname| cut -d . -f 1)(set_color normal):
+	echo (set_color -o cyan)(whoami)(set_color normal)(set_color yellow)@(set_color -o blue)(hostname| cut -d . -f 1)(set_color normal):(pwd)
-	echo -n (set_color (__caret_color))'# '(set_color normal)
+	echo -n (set_color (__caret_color))(__zsh_percent_hash)' '(set_color normal)
 end
 
 function fish_right_prompt -d "Write out the right prompt"
 	date "+%m/%d/%y"
 end
+
+### Polyfills
+
+## ZSH polyfills
+# http://zsh.sourceforge.net/Doc/Release/Prompt-Expansion.html
+
+# It's like prompt_pwd, but not exactly.
+function __zsh_percent_tilde
+  echo -n "unimplemented"
+end
+
+# $ for luser, # for superuser
+function __zsh_percent_hash
+	if [ $USER = "root" ]
+	  echo -n "#"
+	else
+	  echo -n "\$"
+	end
+end
+
+## Oh-my-zsh polyfills
+# https://github.com/robbyrussell/oh-my-zsh/blob/master/lib/git.zsh
+
+function __omz_git_prompt_info
+  echo -n "unimplemented"
+end
+