On Thursday 08 March 2007 10:45, Les Mikesell wrote:
> > I can tell that deep down you know the two are much the same:
> > * A [tag] is a tree of files given a name, and selected from
> > certain revisions of certain files.
> > * A [branch] is a tree of files given a name, and selected from
> > certain revisions of certain files.
> >
> > Then why does cvs track them two different ways? Why to make it
> > more complicated, of course ;-)
>
> No, in cvs, a tag is just a label applied to a file/revision to
> make it easy to find a set with that label again and do group
> operations on them. Tags never divorce a file from its subsequent
> revisions as can happen in subversion.
Les, I think you misunderstood me. I agree with you, and what I said
*is* correct (except that I could not think of a good way to word
it). I atempted to describe the result of "what we do" with tags and
branches. You are thinking in terms of "why we do it" and cvs
internal workings, but I am saying to forget that for now. Anyway, in
that statement I was only explaining why `svn copy` is ideal for
tagging. When you say "No" as if I was wrong, either you
misunderstand or you are saying that Subversion has no 'tagging'
capability just because it only uses 'copy'.
I do hope you could clarify what you mean though, that subversion
could "divorce a file from it's subsequent revisions". Did you mean
somehow it could lose the history, in what situation?
I realize it's probably not the question of this thread. I've learned
I just can't understand anything without making sure I understand
it's precepts.
> I think the unanswered question is, starting from a subversion tag
> copy, where subsequent work has been done on the corresponding files
> in branch/trunk copies, how do you take only the tagged files, but
> advance them to HEAD (or some arbitrary rev number)? In cvs, since
> all revisions exist in a single versioned file, you can look
> 'forward' past the tag. What is the equivalent subversion
> operation, especially for tags copied from a working copy where the
> tagged revision may not match anything else in the repository?
Although I still don't see any problem with doing all this in
subversion, I just don't see any example to use. Could someone spell
out the problem in steps, and maybe how it is done in cvs?
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Received on Thu Mar 15 19:48:49 2007