PROJECTS
1$OpenBSD: PROJECTS,v 1.9 2018/01/08 12:08:17 jca Exp $
2
3Things to be done in pdksh (see also the NOTES file):
4
5 * builtin utilities:
6 pdksh has most if not all POSIX/at&t ksh builtins, but they need to
7 be checked that they conform to POSIX/at&t manual. Part of the
8 process is changing the builtins to use the ksh_getopt() routine.
9
10 The following builtins, which are defined by POSIX, haven't been
11 examined:
12 eval
13
14 The first pass has been done on the following commands:
15 . : alias bg break cd continue echo exec exit export false fc fg
16 getopts jobs kill pwd read readonly return set shift time trap true
17 umask unalias unset wait
18
19 The second pass (ie, believed to be completely POSIX) has been done on
20 the following commands:
21 test
22
23 (ulimit also needs to be examined to check that it fits the posix style)
24
25 * trap code
26 * add the DEBUG trap.
27 * fix up signal handling code. In particular, fatal vs tty signals,
28 have signal routine to call to check for pending/fatal traps, etc.
29
30 * lexing
31 the lexing may need a re-write since it currently doesn't parse $( .. ),
32 $(( .. )), (( ... )) properly.
33 * need to ignore contents of quoted strings (and escaped chars?)
34 inside $( .. ) and $(( .. )) when counting parentheses.
35 * need to put bounds check on states[] array (if it still exists after
36 the re-write)
37
38 * variables
39 * The "struct tbl" that is currently used for variables needs work since
40 more information (eg, array stuff, fields) are needed for variables
41 but not for the other things that use "struct tbl".
42 * Arrays need to be implemented differently: currently does a linear
43 search of a linked list to find element i; the linked list is not
44 freed when a variable is unset.
45
46 * functions
47 finish the differences between function x and x(): trap EXIT, traps
48 in general, treatment of OPTIND/OPTARG,
49
50 * history
51 * Add multiline knowledge
52 * bring history code up to POSIX standards (see POSIX description
53 of fc, etc.).
54
55 * miscellaneous
56 * POSIX specifies what happens when various kinds of errors occur
57 in special built-ins commands vs regular commands (builtin or
58 otherwise) (see POSIX.2:3.8.1). Some of this has been taken
59 care of, but more needs doing.
60
61 * remove static limits created by fixed sized arrays
62 (eg, ident[], heres[], PATH, buffer size in emacs/vi code)
63
64 * merge the emacs and vi code (should reduce the size of the shell and
65 make maintenance easier); handle SIGWINCH while editing a line.
66 [John Rochester is working on the merge]
