"begin [0-7]* *". Now `begin with, ' is not a header line. Do a boundary check for body characters. Characters less than 33 or greater than 96 are out of range. If characters are out of range uudecode print a error message and die.
-p Decode file and write output to standard output. -c Decode more than one uuencode'd file from file if possible.
produce such things.