🚀 go-pugleaf

    Date: Fri, 15 Feb 91 15:16:29 est
    From: ronen@ai.mit.edu (Ronen Basri)

    HP workstations introduce a bug in m-x ispell-buffer command in Emacs.
    The problem is that on the HPs this command fails to break the text
    into single words and therefore cannot check for the validity of the
    words. This problem does not occur when the m-x ispell-word and the
    m-x spell-buffer are used.

The problem is tr is different on Suns and HPs.  I fixed this for the
HPs a while ago (and made m-$ run ispell-word rather than spell-word),
but I guess the change has been lost.

The emacs source for ispell defines

(defvar ispell-filter-hook-args '("-cs" "A-Za-z" "\012")
  "*Argument LIST to pass to ispell-filter-hook")

which works on Suns.  For HPs the args must be a little different.
If you put this line in your .emacs

(setq ispell-filter-hook-args
      (if nil
	  '("-cs" "[A-Z][a-z]" "[\012]")
	  '("-cs" "[A-Z][a-z]" "[\012*]")))

I forgot the predicate I used, so the fix above will only work for HPs
(ie, ispell won't work on suns).  The predicate should return NIL for
HPs (or sys V) and t for BSD.  If somebody knows a good predicate ...