1 files changed, 4 insertions, 0 deletions
diff --git a/lib/jcode.rb b/lib/jcode.rb
index e566f96f60..7175c1b4b6 100644
--- a/lib/jcode.rb
+++ b/lib/jcode.rb
@@ -1,5 +1,9 @@
 # jcode.rb - ruby code to handle japanese (EUC/SJIS) string
 
+if $VERBOSE && $KCODE == "NONE"
+  STDERR.puts "Warning: $KCODE is NONE."
+end
+
 $vsave, $VERBOSE = $VERBOSE, false
 class String
   printf STDERR, "feel free for some warnings:\n" if $VERBOSE