Reverted "use %" to expr-like behavior with return values preserved.

nomsu.lua

@@ -1352,13 +1352,15 @@ do
         }
       end)
       self:define_action("run file %filename", get_line_no(), function(_filename)
-        return nomsu:run_file(_filename)
+        return {
+          expr = "nomsu:run_file(" .. tostring(nomsu:tree_to_lua(filename).expr) .. ")"
+        }
       end)
       return self:define_compile_action("use %filename", get_line_no(), function(_filename)
         local filename = nomsu:tree_to_value(_filename)
         nomsu:require_file(filename)
         return {
-          statements = "nomsu:require_file(" .. tostring(repr(filename)) .. ");"
+          expr = "nomsu:require_file(" .. tostring(repr(filename)) .. ");"
         }
       end)
     end

nomsu.moon

@@ -929,12 +929,12 @@ class NomsuCompiler
             return expr: repr("#{tree.filename}:#{tree.start},#{tree.stop}")
 
         @define_action "run file %filename", get_line_no!, (_filename)->
-            nomsu\run_file(_filename)
+            return expr:"nomsu:run_file(#{nomsu\tree_to_lua(filename).expr})"
 
         @define_compile_action "use %filename", get_line_no!, (_filename)->
             filename = nomsu\tree_to_value(_filename)
             nomsu\require_file(filename)
-            return statements:"nomsu:require_file(#{repr filename});"
+            return expr:"nomsu:require_file(#{repr filename});"
 
 -- Only run this code if this file was run directly with command line arguments, and not require()'d:
 if arg and debug.getinfo(2).func != require