We use Subversion for version control and Jira for tickets. All our commit messages have a Jira ticket id in it. The repository has a traditional organization with a main trunk and a version branch.
I'd like to answer this question:
Which closed ticket items entered in this release?
See that there are some caveats, like when an item is committed in a release branch and in the main trunk.
Is there a tool that already does it for me? Or should I write my own Subversion log analyzer tool?