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I got the pd-ksh from John MacMillan after he indicated that he
had a version of it that had vi editing (I'd seen various versions
with emacs-editing, but none with vi).
It had a few bugs and areas which were not quite complete. I fixed
(or at least tried) to fix several; there are still some things
which I plan on doing (or at least looking into).
Bugs fixed (or at least abated):
vi-mode changes:
- Changed memcpy() to memmove(), which fixed the trashing of
the end of the edit buffer while inserting in the middle
of a line or with use of '#'
- using 'r' replacing the current character with ^@
- typing ctrl-c resulting in next command being garbled
- lack of support for '-' and '+' (pretty trivial)
- finish adding support for '*' (not entirely sure I'm freeing
malloc'ed memory correctly here, but I haven't had any problems)
- treats '_' as end of a word
general changes:
- reporting "not found" when a file actually doesn't have
the appropriate execute bit set (now says "cannot execute"
or "not found", as appropriate)
Still to do:
vi changes:
- fix ctrl-r (I've come up with a hack, but it involves
redrawing the screen a lot when it isn't necessary; I
really wouldn't consider this a fix)
- add support for 'v'
general changes:
- seems to be a memory leak when executing shells in the
current shell; repeatedly executing ". /etc/profile"
increased the size of the program as reported in the
"SZ" field of "ps -l"
- don't give a file its complete pathname in argv[0]; only
its filename (religious issue?)
- history recall should start at the previous command, not
the current one (typing "r r" causes an infinite loop)
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