This is a mirror of http://www.vim.org/scripts/script.php?script_id=1644

Simply switches between .c/.cpp and .h/.hpp files, suitable for one-keystroke switching.
Order of priority when looking for corresponding files:
1) if .h file, seeks for .c first, then .cpp
2) otherwise, seeks for .h first, then .hpp
Inspired by vimtip #384. Not as complex as vimscript #31, but if you need only small amount of code ...