Make the fish prompt more modern

Change arrow style and display git information.

Install/Templates/fish/functions/fish_prompt.fish

@@ -1,26 +1,33 @@
-function fish_prompt
-	if not set -q VIRTUAL_ENV_DISABLE_PROMPT
-        set -g VIRTUAL_ENV_DISABLE_PROMPT true
-    end
-    set_color yellow
-    printf '%s' (whoami)
+function fish_prompt --description 'Write out the prompt'
+	set -l last_status $status
+
+    # User
+    set_color $fish_color_user
+    echo -n (whoami)
     set_color normal
-    printf '@'
 
-    set_color red
-    echo -n jupyter-raspberry-pi3
+    echo -n '@'
+
+    # Host
+    set_color $fish_color_host
+    echo -n (prompt_hostname)
     set_color normal
-    printf ':'
 
+    echo -n ':'
+
+    # PWD
     set_color $fish_color_cwd
-    printf '%s' (prompt_pwd)
+    echo -n (prompt_pwd)
     set_color normal
 
-    # Line 2
+    __terlar_git_prompt
+    __fish_hg_prompt
     echo
-    if test $VIRTUAL_ENV
-        printf "(%s) " (set_color blue)(basename $VIRTUAL_ENV)(set_color normal)
+
+    if not test $last_status -eq 0
+        set_color $fish_color_error
     end
-    printf '> '
+
+    echo -n '➤ '
     set_color normal
 end