URL shortcuts to head of branch when viewing files on the Bitbucket UI

Currently, each files in Bitbucket are linked using:
https://bitbucket.org/username/repository/src/<revision hash>/<filename>/?at=<branch name>

Instead of linking to a specific commit hash, the source view should link to the head of the branch directly unless a specific commit was selected.

Example, the URL could be:
https://bitbucket.org/username/repository/src/<filename>/?at=<branch name>