svn - Find revision in trunk that a branch was created from

Question

I am trying to merge the latest changes from trunk into a branch of my project, but the problem is I don't know what revision of the trunk I checked out that I eventually created the branch from. I would think SVN logged this somewhere. Does anyone know how I can find the revision number?

(In other words, the Subversion equivalent of git merge-base master branch-name)

Answer 1

From the command line, the --stop-on-copy flag can be used to help show you where you copied a branch from:

svn log --stop-on-copy --verbose --limit 1 -r0:HEAD ^/branches/feature

(where feature is the name of your branch)

The last line of will say something like this:

Changed paths:
   A /branches/feature (from /trunk:1234)