1 --- isdigit.3 2004-11-25 11:38:17.000000000 -0800
2 +++ isdigit.3.edit 2006-08-09 13:23:40.000000000 -0700
9 the value of the argument is
15 functions return zero if the character tests false and
16 -returns non-zero if the character tests true.
17 +return non-zero if the character tests true.
22 function should be used instead.