Path: utzoo!utgpu!watmath!iuvax!bsu-cs!dhesi
From: dhesi@bsu-cs.bsu.edu (Rahul Dhesi)
Newsgroups: comp.unix.questions
Subject: Re: SCCS vs RCS
Summary: preserving keywords in SCCS
Message-ID: <7651@bsu-cs.bsu.edu>
Date: 8 Jun 89 22:35:33 GMT
References: <19885@adm.BRL.MIL> <2934@mentor.cc.purdue.edu> <10006@mpx2.mpx.com>
Reply-To: dhesi@bsu-cs.bsu.edu (Rahul Dhesi)
Organization: CS Dept, Ball St U, Muncie, Indiana
Lines: 27

In article <10006@mpx2.mpx.com> erik@mpx2.mpx.com (Erik Murrey) writes:
>For example, in SCCS, a "%Z%" gets expanded into "@(#)" when checked
>out (for compiling), but it cannot collapse that back to "%Z%" if I
>check that version in.

This is a design bug in SCCS.  There is a way around it, provided you
use a standard set of sccs keywords in all files.  For example:

     static char sccsid[] = "::[ %lots% %of% %sccs% %keywords% ]::";

Then when you lose keywords in a file, filter it through my "updid" script:

   #! /bin/sh
   # usage:  updid file ...
   # Restores lost SCCS keywords between ::[ and ]:: in source files
   # Copyright 1989 Rahul Dhesi, All rights reserved.  Use and
   # distribution permitted in accordance with the GNU license
   TMP=T$$
   WORDS='::[ %lots% %of% %sccs% %keywords% ]::'
   for f
   do
      sed < $f > $TMP -e "s/::\[.*\]::/$WORDS/" && mv $TMP $f
   done
-- 
Rahul Dhesi <dhesi@bsu-cs.bsu.edu>
UUCP:    ...!{iuvax,pur-ee}!bsu-cs!dhesi
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