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Re: cvs log -rtag_at_base_of_branch::tag_on_branch fails

From: Veda Larson Palmer
Subject: Re: cvs log -rtag_at_base_of_branch::tag_on_branch fails
Date: Thu, 1 Aug 2002 15:22:51 -0700 (PDT)

Hi Derek,

I see what you mean about diff vs log, but my v1_0 is definitely an
ancestor of v1_1 (case 1) - we defined branch1 to be rooted at v1_0.
v1_0 is conceptually on the same branch as v1_1 - it's just at the
base.  This is analogous to the example in the manual:


cvs rtag -b -r v1_0 branch1 ...


So, the command "cvs log -N -rv1_0::v1_1 ..." to get logs for changes
between v1_0 and v1_1 should be well defined.  I would think that
anyone who uses branches for maintenance releases would want to do
this to generate changelogs.  Is this the way to do it or is there a
better way?  How do you guys generate changelogs?


-----Original Message-----
Date: Thu, 01 Aug 2002 17:14:57 -0400
From: Derek Robert Price <derek@ximbiot.com>
To: Veda Larson Palmer <veda.palmer@pfizer.com>
CC: lawrence.jones@eds.com, bug-cvs@gnu.org
Subject: Re: cvs log -rtag_at_base_of_branch::tag_on_branch fails

First off, there is a major difference between the log and diff 
functionality here.  Diff only needs to process two revisions - 
effectively, it's checking out rev1 and rev2 and then running the 
equivalent of the diff util that you'd run from the command line.

Now, when you supply two revisions to log, it is a little trickier to 
figure out what you want.  In this case, I would say it is fairly 
obvious that you are asking for all the log messages from revisions 
along the trunk from rev1to the base of branch1 then all the revisions 
on branch1 up to and including rev2:


But, in this case, things aren't so obvious:

                     \                         \
                      \----branch1-----rev1     \------branch2-----rev2

Larry only recently made what he called a "first cut" at making log 
requests between a "revision and *any* ancestor":

> 2002-04-19  Larry Jones  <larry.jones@sdrc.com>
>     * log.c (log_expand_revlist): First cut at code to allow logging
>     between a revision and *any* ancestor, not just one explicitly on
>     the same branch (e.g., from 1.1 to

But I wouldn't be suprised from Larry's phrasing that only case 1 above 
had been implemented nor would I be suprised that case 2 was not even 
meant to work.  Do you know which case your log request fell into?



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