FishEye can render Wiki Markup in commit messages. This page contains instructions for turning this setting on and off. You can set this option as a global default, as well as individually per-repository.
When using Crucible, you can also have Wiki Markup rendering in review comments and review descriptions.
The factory setting is 'plain', i.e. FishEye will not render commit messages.
Screenshot: Setting Global Wiki Rendering for Commit Messages

To adjust this, go to 'FishEye Administration' > 'Repository Options' > 'Commit Message Syntax'.
You can choose from the following options:
Screenshot: Setting Per-Repository Wiki Rendering for Commit Messages
