On 2017-12-11, at 08:28:51, Jonathan Scott wrote: > > The SUPERC utility (ISRSUPC from ISPF, or ASMFSUPC from the HLASM > Toolkit) has an UPDMVS8 option which compares two levels of a file and > produces an IEBUPDTE-type update file. It also has a similar UPDCMS8 > option to produce a CMS UPDATE file. > > That method is in many ways safer and more flexible than using the > editor to create update files, as it is not confused by lines which have > been touched without actually having been changed, and it does not even > need the new version of the file to have sequence numbers. So for > Alas, UPDMVS8, unlike UPDCMS8, requires that NEW have valid sequence numbers. I suspect this is a desparate attempt to preserve ISPF modification levels. I wrote a Rexx filter to convert UPDCMS8 to IEBUPDTE-compatible deltas.
> example, one can update a source file on a workstation, upload it to VM > and create a "delta" for the corresponding support copy maintained using > sequence numbers in IBM's SPA repository. > I much prefer diff and patch because they can deal with variable length records. -- gil
