--- peter.far...@broadridge.com wrote: From: "Farley, Peter x23353" <peter.far...@broadridge.com> To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: [IBM-MAIN] git, z/OS and COBOL Date: Tue, 10 Oct 2017 23:19:38 +0000
Steve, Once you start using git (or for that matter any of the *ix-based source repository utilities) for mainframe source maintenance, you stop using IEBUPDTE (or any other sequence-number-based source update process) and start using the "patch" utility. The input to "patch" is the output from "diff" (when properly configured with options, as is done inside of git and other source repository utilities). The "diff" and "patch" utilities could care less what is on each line. They just compare lines and try to find the maximal number of non-differences (sets of matching lines) between the minimal number of difference lines. It's an art, but it mostly works. Any kind of sequence numbering in the source lines defeats "diff" entirely and everything after an insert looks like it changed. So if you plan to move to git or one of its predecessors, plan to eliminate all sequence numbering in the source when you first move it into the repository. <snippage> So how does one merge fixes into source if the "source" numbering is removed? The fixes may issue delete of lines, addition of lines and replace of lines and there may be multiple delta decks to be applied anytime one wants to do changes to the source. This is not a spec I'm providing, this is a requirement I would have to live with. >From what you say, diff and patch will not know or understand where the source >being supplied to update the original source goes. So, I don't think your method is going to fly with source coming from a vendor that has to be updated via IEBUPDTE, nor is it going to fly with one of our groups that uses IEBUPDTE to update their source... This is the kind of show stopper that we need to find a solution for, because it will be the DEATH of the POC. That is, git will be DBA -- Dead Before Arrival if there is no way to solve this. Regards, Steve Thompson ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
