Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!ll-xn!husc6!yale!bunker!shap
From: shap@bunker.UUCP (Joseph D. Shapiro)
Newsgroups: comp.software-eng
Subject: Re: Coordinating Software Development (long)
Message-ID: <3253@bunker.UUCP>
Date: 2 Feb 88 18:21:11 GMT
References: <2457@orca.TEK.COM> <1713@ttidca.TTI.COM> <1315@vaxb.calgary.UUCP> <1664@desint.UUCP>
Reply-To: shap@clunker.UUCP (Joseph D. Shapiro)
Organization: Bunker Ramo, an Olivetti Company, Shelton, Ct
Lines: 37
Keywords: configuration management, sccs, project control, RCS

In article <1664@desint.UUCP> geoff@desint.UUCP (Geoff Kuenning) writes:
>In article <1315@vaxb.calgary.UUCP> jonesb@calgary.UUCP (Bill Jones) writes:
>
>> Okay, suppose your company is working on the next release of a product
>> already in the field.  An important customer reports a critical bug,
>> ...
>> management and tool support can minimize it.  I would be interested in
>> hearing of any non-parallel system which cleanly supports both new
>> development and maintenance of past releases.
>
>RCS supports this very nicely;  you simply create a branch for the bug fix
>while development continues on the main path.  RCS even provides the "-j"
>switch (admittedly a very hard switch to use correctly) to help you merge
>...
>I believe you can also do this with SCCS, though I haven't personally
>created an SCCS branch while another revision was actually checked out.
\

yes, SCCS allows different revisions to be checked out concurrently.

there is also a means to apply the same fix to different revisions,
as follows:

	get -e -r4.1.1.2 s.x.c # gets 4.1.1.2 for editing
	vi x.c # make your changes
	delta s.x.c # creates 4.1.1.3 (assuming 4.1.1.2 was a 'leaf')
	get -e -r4.2 -i4.1.1.3 s.x.c # gets 4.2, includes 4.1.1.3 changes
	delta s.x.c # creates 4.3 (assuming 4.2 was a leaf), with 4.1.1.3
                      changes.

Note that the second get could complain about conflicts,  e.g.
overlapping areas of change on the different branches.

-- 
-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
Joe Shapiro					"My other car is a turbo...
Bunker Ramo Olivetti				 too."
{decvax,yale,philabs,oliveb}!bunker!shap