Problem: Beeping when running the tests. Solution: Fix 41 beeps. (Roland Eggner)
Problem: Test 83 may fail for some encodings. Solution: Set 'encoding' to utf-8 earlier.
Problem: Test 83 fails when iconv does not support cp932. (raf) Solution: Test if conversion works. (Yukihiro Nakadaira)
Problem: When a tags file specifies an encoding different from 'enc' it may hang and using a pattern doesn't work. Solution: Convert the whole line. Continue reading the header after the SORT tag. Add test83. (Yukihiro Nakadaira)
