Remove global OSTYPE variable.

init.fish

@@ -26,8 +26,6 @@ else
   set -gx ORIGINAL_PATH $PATH
 end
 
-set -q OSTYPE; or set -g OSTYPE (uname)
-
 # Save the head of function path and autoload core functions
 set -l user_function_path $fish_function_path[1]
 set fish_function_path[1] $OMF_PATH/lib

pkg/omf/omf.fish

@@ -97,9 +97,10 @@ function omf -d "Oh My Fish"
 
     case "t" "theme"
       if test (count $argv) -eq 1
+        set -l ostype (uname)
         set -l theme (cat $OMF_CONFIG/theme)
         set -l regex "[[:<:]]($theme)[[:>:]]"
-        test "$OSTYPE" != "Darwin"; and set regex "\b($theme)\b"
+        test "$ostype" != "Darwin"; and set regex "\b($theme)\b"
 
         omf.list_themes | column | sed -E "s/$regex/"(omf::em)"\1"(omf::off)"/"
         omf::off