Index: lib/redmine/unified_diff.rb
===================================================================
--- lib/redmine/unified_diff.rb	(리비전 11705)
+++ lib/redmine/unified_diff.rb	(작업 사본)
@@ -199,14 +199,14 @@
         while starting < max && line_left[starting] == line_right[starting]
           starting += 1
         end
-        while line_left[starting].ord.between?(128, 191) && starting > 0
+        while starting > 0 && line_left[starting].ord.between?(128, 191)
           starting -= 1
         end
         ending = -1
         while ending >= -(max - starting) && line_left[ending] == line_right[ending]
           ending -= 1
         end
-        while line_left[ending].ord.between?(128, 191) && ending > -1
+		while ending > -1 && line_left[ending].ord.between?(128, 191)
           ending -= 1
         end
         unless starting == 0 && ending == -1