日本語・全角のファイル名を含んだ場合

整理のため、pdftk-1.44で日本語・全角のファイル名を含んだ場合に、どのような出力になるのか、まとめます。

まず、日本語・全角のファイルを使用しない、正常に動作する例：

O:\DL\pdftk-1.44-win\pdftk-1.44-win-install\bin>pdftk.exe input.pdf output out.pdf

O:\DL\pdftk-1.44-win\pdftk-1.44-win-install\bin>echo %errorlevel%
0

正常に動作しない例、日本語・全角のファイル名を含んだ場合：

O:\DL\pdftk-1.44-win\pdftk-1.44-win-install\bin>pdftk 日本語入力.pdf output 日本語出力.pdf

Error: Unexpected Exception in open_reader()
java.lang.NullPointerException
at 0x005a3abe (Unknown Source)
at 0x005a3fb2 (Unknown Source)
at 0x005a4063 (Unknown Source)
at 0x005e3e8d (Unknown Source)
at 0x005b0dad (Unknown Source)
at 0x005afa9d (Unknown Source)
at 0x005a04b2 (Unknown Source)
at 0x005bb980 (Unknown Source)
at 0x005bbbdd (Unknown Source)
at 0x0053e7a1 (Unknown Source)
at 0x0053e70a (Unknown Source)
at 0x004b2c79 (Unknown Source)
at 0x0050b757 (Unknown Source)
at 0x0050b70a (Unknown Source)
at 0x00411eaa (Unknown Source)
at 0x00412be6 (Unknown Source)
at 0x00413fe2 (Unknown Source)
at 0x0041750e (Unknown Source)
at 0x00597fc2 (Unknown Source)
at 0x00598054 (Unknown Source)
at 0x7c817073 (Unknown Source)
Error: Failed to open PDF file:
日本語入力.pdf
Errors encountered. No output created.
Done. Input errors, so no output created.

O:\DL\pdftk-1.44-win\pdftk-1.44-win-install\bin>echo %errorlevel%
1