1 Things to be done in pdksh (see also the NOTES file):
4 pdksh has most if not all POSIX/at&t ksh builtins, but they need to
5 be checked that they conform to POSIX/at&t manual. Part of the
6 process is changing the builtins to use the ksh_getopt() routine.
8 The following builtins, which are defined by POSIX, haven't been
12 The first pass has been done on the following commands:
13 . : alias bg break cd continue echo exec exit export false fc fg
14 getopts jobs kill pwd read readonly return set shift time trap true
15 umask unalias unset wait
17 The second pass (ie, believed to be completely POSIX) has been done on
18 the following commands:
21 (ulimit also needs to be examined to check that it fits the posix style)
24 Ideally, as the builtin utilities are being POSIXized, short tests
25 should be written to be used in regression testing. The tests
26 directory contains some tests, but many more need to be written.
28 * internationalization
29 Need to handle with the LANG and LC_* environment variables. This
30 involves changes to ensure <ctype.h> macros are being used (currently
31 uses its own macros in many places), figuring out how to deal with
32 bases (for integer arithmetic, eg, 12#1A), and (the nasty one) doing
33 string look ups for error messages, etc.. It probably isn't worth
34 translating strings to other languages yet as the code is likely
35 to change a lot in the near future, but it would be good to have the
36 code set up so string tables can be used.
40 * fix up signal handling code. In particular, fatal vs tty signals,
41 have signal routine to call to check for pending/fatal traps, etc.
44 * the time keyword needs to be hacked to accept options (!) since
45 POSIX says it shall accept the -p option and must skip a -- argument
46 (end of options). Yuck.
49 the lexing may need a re-write since it currently doesn't parse $( .. ),
50 $(( .. )), (( ... )) properly.
51 * need to ignore contents of quoted strings (and escaped chars?)
52 inside $( .. ) and $(( .. )) when counting parentheses.
53 * need to put bounds check on states[] array (if it still exists after
57 * The "struct tbl" that is currently used for variables needs work since
58 more information (eg, array stuff, fields) are needed for variables
59 but not for the other things that use "struct tbl".
60 * Arrays need to be implemented differently: currently does a linear
61 search of a linked list to find element i; the linked list is not
62 freed when a variable is unset.
65 finish the differences between function x and x(): trap EXIT, traps
66 in general, treatment of OPTIND/OPTARG,
69 There are two versions of the history code, COMPLEX_HISTORY and
70 EASY_HISTORY, which need to be merged. COMPLEX does at&t style history
71 where the history file is written after each command and checked when
72 ever looking through the history (in case another shell has added
73 something). EASY simply reads the history file at startup and writes
75 * re-write the COMPLEX_HISTORY code so mmap() not needed (currently
76 can't be used on machines without mmap()).
77 * Add multiline knowledge to COMPLEX_HISTORY (see EASY_HISTORY
79 * change COMPLEX_HISTORY code so concurrent history files are
80 controlled by an option (set -o history-concurrent?). Delete
81 the EASY_HISTORY code.
82 * bring history code up to POSIX standards (see POSIX description
86 Some sort of tutorial with examples would be good. Texinfo is probably
87 the best medium for this. Also, the man page could be converted to
88 texinfo (if the tutorial and man page are put in the same texinfo
89 page, they should be somewhat distinct - i.e., the tutorial should
90 be a separate thread - but there should be cross references between the
94 * POSIX specifies what happens when various kinds of errors occur
95 in special built-ins commands vs regular commands (builtin or
96 otherwise) (see POSIX.2:3.8.1). Some of this has been taken
97 care of, but more needs doing.
99 * remove static limits created by fixed sized arrays
100 (eg, ident[], heres[], PATH, buffer size in emacs/vi code)
102 * merge the emacs and vi code (should reduce the size of the shell and
103 make maintenance easier); handle SIGWINCH while editing a line.
104 [John Rochester is working on the merge]
106 * add POSIX globbing (eg, [[:alnum:]]), see POSIX.2:2.8.3.2.
108 * teach shf_vfprintf() about long long's (%lld); also make %p use
109 long longs if appropriate.