When a project has many task, certain bugs might be particularly important: either as a tracking task, or as a release task, etc.
Some examples are the HTML5 tracking bug in mozilla (568516), but which can also be referred to as 'html5'. See https://bugzilla.mozilla.org/show_bug.cgi?id=566348 under " Blocks: " where it shows a bug number (likely some random bug) as well as 'html5'. You can even directly visit the bug via https://bugzilla.mozilla.org/show_bug.cgi?id=html5
A similar concern happens with Phabricator tasks. For example, the task that happens to be tracking harbormaster is T1049, but remembering that is now required. It would be nice to be able to refer to such a bug as, for example, `{Tharbormaster}` and have phabricator automatically link to the aliased task.