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(cvs.info)Multiple vendor branches

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Multiple vendor branches
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   All the examples so far assume that there is only one vendor from
which you are getting sources.  In some situations you might get
sources from a variety of places.  For example, suppose that you are
dealing with a project where many different people and teams are
modifying the software.  There are a variety of ways to handle this,
but in some cases you have a bunch of source trees lying around and
what you want to do more than anything else is just to all put them in
CVS so that you at least have them in one place.

   For handling situations in which there may be more than one vendor,
you may specify the `-b' option to `cvs import'.  It takes as an
argument the vendor branch to import to.  The default is `-b 1.1.1'.

   For example, suppose that there are two teams, the red team and the
blue team, that are sending you sources.  You want to import the red
team's efforts to branch 1.1.1 and use the vendor tag RED.  You want to
import the blue team's efforts to branch 1.1.3 and use the vendor tag
BLUE.  So the commands you might use are:

     $ cvs import dir RED RED_1-0
     $ cvs import -b 1.1.3 dir BLUE BLUE_1-5

   Note that if your vendor tag does not match your `-b' option, CVS
will not detect this case!  For example,

     $ cvs import -b 1.1.3 dir RED RED_1-0

Be careful; this kind of mismatch is sure to sow confusion or worse.  I
can't think of a useful purpose for the ability to specify a mismatch
here, but if you discover such a use, don't.  CVS is likely to make this
an error in some future release.