"at" cannot schedule an event during the following year
if requested by month and date.
Fix: Unknown
If the shell script produced by "at" includes the assignment
of exported variables with special characters (e.g. $IFS)
the script can fail.
Fix: A fairly good fix is
/fprintf(file, "%s.n", .ep++);/c
++ix;
fprintf(file, "%.*s'%s'\n", ix-*ep, *ep, ix);
*ep++;
.
A better fix would scan *ep to take care of single
qoute marks in a shell variable.