misc/hexdump.rb in metasm-1.0.1 vs misc/hexdump.rb in metasm-1.0.2

@@ -49,7 +49,8 @@
 	fmt << 'c' if ARGV.delete '-C'
 	fmt << 'w' if ARGV.delete '-W'
 	fmt << 'd' if ARGV.delete '-D'
 	fmt << 'a' if ARGV.delete '-A'
 	fmt = ['c', 'd', 'a'] if ARGV.delete '-a'
-	File.open(ARGV.first, 'rb').hexdump(:fmt => fmt)
+	infd = ARGV.empty? ? $stdin : File.open(ARGV.first, 'rb')
+	infd.hexdump(:fmt => fmt)
 end