05/30/2013 ourochan : (1) add some utility functions like copy word & parenthese (2) update useful-regexp.txt
Revert "04/20/2013 ourochan"

This reverts commit afa99299f640d69df8fed88a4a0c7e8ac9f34335.
05/30/2013 ourochan
(1) add copy-word , parenthese
(2) update useful-regexp.txt