67 lines
2.5 KiB
Plaintext
67 lines
2.5 KiB
Plaintext
$OpenBSD: PROJECTS,v 1.9 2018/01/08 12:08:17 jca Exp $
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Things to be done in pdksh (see also the NOTES file):
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* builtin utilities:
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pdksh has most if not all POSIX/at&t ksh builtins, but they need to
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be checked that they conform to POSIX/at&t manual. Part of the
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process is changing the builtins to use the ksh_getopt() routine.
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The following builtins, which are defined by POSIX, haven't been
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examined:
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eval
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The first pass has been done on the following commands:
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. : alias bg break cd continue echo exec exit export false fc fg
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getopts jobs kill pwd read readonly return set shift time trap true
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umask unalias unset wait
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The second pass (ie, believed to be completely POSIX) has been done on
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the following commands:
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test
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(ulimit also needs to be examined to check that it fits the posix style)
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* trap code
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* add the DEBUG trap.
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* fix up signal handling code. In particular, fatal vs tty signals,
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have signal routine to call to check for pending/fatal traps, etc.
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* lexing
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the lexing may need a re-write since it currently doesn't parse $( .. ),
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$(( .. )), (( ... )) properly.
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* need to ignore contents of quoted strings (and escaped chars?)
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inside $( .. ) and $(( .. )) when counting parentheses.
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* need to put bounds check on states[] array (if it still exists after
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the re-write)
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* variables
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* The "struct tbl" that is currently used for variables needs work since
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more information (eg, array stuff, fields) are needed for variables
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but not for the other things that use "struct tbl".
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* Arrays need to be implemented differently: currently does a linear
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search of a linked list to find element i; the linked list is not
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freed when a variable is unset.
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* functions
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finish the differences between function x and x(): trap EXIT, traps
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in general, treatment of OPTIND/OPTARG,
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* history
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* Add multiline knowledge
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* bring history code up to POSIX standards (see POSIX description
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of fc, etc.).
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* miscellaneous
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* POSIX specifies what happens when various kinds of errors occur
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in special built-ins commands vs regular commands (builtin or
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otherwise) (see POSIX.2:3.8.1). Some of this has been taken
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care of, but more needs doing.
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* remove static limits created by fixed sized arrays
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(eg, ident[], heres[], PATH, buffer size in emacs/vi code)
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* merge the emacs and vi code (should reduce the size of the shell and
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make maintenance easier); handle SIGWINCH while editing a line.
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[John Rochester is working on the merge]
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