Default themes argument

- This allows the function to be used from the shell as a shortcut to sourcing
  ~/.zshrc to load a new random theme
- Refactor out list of all available themes

lib/functions.zsh

@@ -86,7 +86,13 @@ function unlike_theme() {
 }
 
 function load_random_theme() {
-    themes=($*)
+    # Default theme selection
+    if [ $# -eq 0 ]; then
+        themes=($ZSH/themes/*zsh-theme)
+    else
+        themes=($*)
+    fi
+
     N=${#themes[@]}
     ((N=(RANDOM%N)+1))
     RANDOM_THEME=${themes[$N]}

oh-my-zsh.sh

@@ -42,13 +42,13 @@ export FAVORITE_THEMES_DIR="$ZSH/themes/favorites/"
 # Load the theme
 # Check for updates on initial load...
 if [ "$ZSH_THEME" = "random" ]; then
-  load_random_theme $ZSH/themes/*zsh-theme
+  load_random_theme
 elif [ "$ZSH_THEME" = "favorites" ]; then
   # Only randomize with liked themes if there are any
   if [ `ls $FAVORITE_THEMES_DIR | wc -w` -gt 0 ]; then
     load_random_theme $FAVORITE_THEMES_DIR/*zsh-theme
   else
-    load_random_theme $ZSH/themes/*zsh-theme
+    load_random_theme
   fi
 else
   source "$ZSH/themes/$ZSH_THEME.zsh-theme"