3 Add a parsing mechanism (user specifies parse tree, perl parses).
4 Arbitrary precision arithmetic.
5 File calculus (e.g. file1 = file2 + file3, file1 =^ s/foo/bar/g etc.)
7 MS-DOS version of Perl:
8 Add interface to treat dBase files as associative arrays.
10 Handle the C preprocessor.
11 Provide real pipes by switching the processes. (difficult)
12 Provide a list of ioctl codes.
13 Check the ioctl errno handling.
14 I can't find an easy way in Perl to pass a number as the first argument
15 to ioctl. This is needed for some functions of ioctl. Either hack
16 ioctl, or change perl to ioctl interface. Another solution would be
17 a perl pseudo array containing the filehandles indexed by fd.