fixed a lot of stuff

conf.d/omf.fish

@@ -3,5 +3,7 @@ set -q XDG_DATA_HOME
   and set -gx OMF_PATH "$XDG_DATA_HOME/omf"
   or set -gx OMF_PATH "$HOME/.local/share/omf"
 
-# Load Oh My Fish configuration.
-source $OMF_PATH/init.fish
+# Load Oh My Fish configuration if it exists.
+if test -f $OMF_PATH/init.fish
+    source $OMF_PATH/init.fish
+end