Allow overriding the right prompt date format.

set -g theme_date_format "+%a %H:%M"

… or something like that :)

See #11

README.md

@@ -69,6 +69,7 @@ set -g theme_display_hg yes
 set -g theme_display_virtualenv no
 set -g theme_display_ruby no
 set -g theme_display_user yes
+set -g theme_date_format "+%a %H:%M"
 set -g default_user your_normal_user
 ```
 

fish_prompt.fish

@@ -19,6 +19,7 @@
 #     set -g theme_display_virtualenv no
 #     set -g theme_display_ruby no
 #     set -g theme_display_user yes
+#     set -g theme_date_format "+%a %H:%M"
 #     set -g default_user your_normal_user
 
 set -g __bobthefish_current_bg NONE

fish_right_prompt.fish

@@ -1,5 +1,6 @@
 function fish_right_prompt -d 'bobthefish is all about the right prompt'
   set_color $fish_color_autosuggestion[1]
-  date
+  set -q theme_date_format; or set -l theme_date_format "+%c"
+  date $theme_date_format
   set_color normal
 end