This program opens a file with some configured program.

The program is chosen based on the filetype as reported by the magic library,
with MAGIC_NONE as open flags.

The used program for some filetype is configured in the file config.h (just look
at it and you will understand) and depends on the requested action.

The possible actions are (e)dit and (v)iew.

To create new associations use the output of file, without flags, as filetype.
Give the full path to the program you chose.