From:	CRDGW2::CRDGW2::MRGATE::"SMTP::CRVAX.SRI.COM::RELAY-INFO-VAX"  4-OCT-1989 23:54
To:	MRGATE::"ARISIA::EVERHART"
Subj:	EVE$$SPELL

Message-Id:  <8910050343.AA03568@crdgw1.ge.com>
Received: From MATH.AMS.COM by CRVAX.SRI.COM with TCP; Wed,  4 OCT 89 13:39:53 PDT
Date: Wed 4 Oct 89 16:39:39-EST
From: "Rich DeJordy, x295" <RAD@MATH.AMS.COM>
Subject: EVE$$SPELL
To: INFO-VAX@SRI.COM
Cc: rad@MATH.AMS.COM

As we were looking through the TPU help the other day, one of my collegues
was intrigued by the SPELL command.  The help explains that this is a TPU
interface to DECspell.  Believing DEC when they said the first E in EVE
stands for Extensible, we set out to modify the SPELL command to work with
the SPELL program we got off a DECUS tape.  Here are some of the
interesting things we learned in doing this.

First, to check if DECspell is installed on your system, the procedure
checks for the existance of a file LNGSPLCOR, with a default directory of
SYS$SYSTEM and a default file type of .EXE.  By simply defining LNGSPLCOR
as a logical name pointing to the image AMS$SYSTEM:SPELL.EXE, we were able
to get by the first check.

Then, the EVE$$SPELL routines checks that the region, if selected, contains
all full lines (partial lines could mean partial words, which would appear
to be misspelled).  If no region is selected, the entire buffer will be
checked.  The command line "SPELL filename/OUTPUT=filename", where "filename"
is SYS$SCRATCH:integer-pid.TMP and "integer-pid" is the integer
representation of the process TPU created to run the SPELL program.

The version of SPELL which we run does not allow for a /OUTPUT qualifier.
A quick work-around was to redefine the command in the DCLTABLES to accept
a /OUTPUT quallifier.  Although this worked, the spell program we use is
sensitive to the extension of a file and behaves differently for a .TEX
file than for a .RNO than for a .TXT file.  In order to take advantage of
this feature, we needed to change the EVE$$SPELL routine to keep the same
extension as the original file.  While doing that, we also removed the
/OUTPUT qualifier from the command line and changed the logical name
search for a file called AMS$SPELL ins SYS$SYSTEM,. but define AMS$SPELL to
point to the actual image on a system wide basis.

The EVE_SPELL and EVE$$SPELL routines are in the EVE$EXTRAS.TPU file of the
new versionof TPU.  If anyone is interested in our version of this file,
please feel free to contact me by phone at (401)272-9500 ext. 295 or by
electronic mail to RAD@MATH.AMS.COM on the Internet.

-------