RE: R:gnubol: Record delimiter clause and parse order

["William M. Klein" <wmklein@ix.netcom.com>]

Does anyone on this list know if the Unix System Services (USS) on OS/390 do
or do not have "line sequential" type files?  I know that they are (as
indicated below) "unknown" in traditional IBM MVS, CMS, and VSE environments.


> -----Original Message-----
> From: owner-gnu-cobol@wallace.lusars.net
> [mailto:owner-gnu-cobol@wallace.lusars.net]On Behalf Of Fred Mobach
> Sent: Wednesday, June 07, 2000 1:55 PM
> To: gnu-cobol@lusars.net
> Subject: Re: R:gnubol: Record delimiter clause and parse order
>
>
> "William M. Klein" wrote:
>
> > Just so it is clear, there is NOTHING ambiguous about being able to do
> > REWRITEs on Sequential (access as well as organization) files in
> the '85 *or*
> > draft file - if they are opened I-O.  This is required by the Standard.
> > HOWEVER, as "line sequential" files are NOT part of the
> Standard, it doesn't
> > address what you may or may not do for that type of file.  GENERALLY, you
> > want the rules to be as close to RECORD SEQUENTIAL as possible (IMHO).
>
> Well, in case you want to consider the equivalences between these
> two forms of
> sequential files with variable record lengths you might also want
> to consider
> the behavior of some existing run-time systems as described below.
>
> The "line sequential" files were unknown on the mainframes, at
> least for me. In
> case of sequential files with variable record length and the
> "RECORD IS VARYING
> IN SIZE DEPENDING ON" clause the record could only be rewritten if
> the contents
> of the record length field at the time of the rewrite was equal to
> the contents
> of that same field after the read.
>
> Regards,
>
> Fred Mobach
>
>
>
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