Revisit Newbie Bazaar Repository and Branch Setup

[Eric Siegerman]

On Thu, 2010-12-09 at 14:04 -0600, Neil Martinsen-Burrell wrote:
On 2010-12-09 12:47 , Eric Siegerman wrote:
> > So it looks as though bzr doesn't like chains of heavyweight
> > checkouts, but, depending on the transports involved, it only
> > sometimes refuses to commit to them.  Aside: Is the latter a bug
> > or an unavoidable limitation?
> 
> The former is an intentional decision (at least the last time I 
> encountered it) so that Bazaar does not have to check for cycles of 
> bound branches (A -> B -> A).

I figured as much, given the explicit error message.  Thanks for
explaining the reasoning.

> I believe that the ability to commit to a bound branch whose parent
is 
> itself a bound branch over *any* transport is a bug.  Can you give a 
> reproduction recipe for what you did?

    TESTDIR=/tmp/bzrtest
    mkdir $TESTDIR
    cd $TESTDIR
    bzr init a
    bzr checkout bzr+ssh://localhost$TESTDIR/a b
    bzr checkout bzr+ssh://localhost$TESTDIR/b c
    cd c
    echo some text >file
    bzr add file
    bzr ci '-mThis commit should fail.'

The "bzr ci" should fail with a message matching:
    bzr: ERROR: Cannot commit to branch .*. It is bound to .*, which is
bound to .*.

Now delete /tmp/bzrtest, change the two checkout lines to:
    bzr checkout a b
    bzr checkout b c
and run it again.  This time you get the expected error message.


I tried to do this as a pair of shell-like tests.  The one that
uses simple pathnames was easy, but I couldn't figure out how to
get $TESTDIR into the bzr+ssh: URLs for the other one.  Is there
a way to do that, or to avoid the necessity for it?

  - Eric