As another example, consider the template:
{Location}-{Country}-{State}-{City}-{Caption} for a photo that has “Location” and “Caption”, but no “Country,” “City,” or “State.”. Assuming that location and caption are “Home” and “Having Fun” respectively, it becomes:
Home-Having Fun which is better than it would be without these special rules:
Home----Having Fun
Jeffrey Friedl’s Blog » Preset Templates in My Lightroom Plugins
Sweet!!! This is a much need addition to Adobe Lightroom. The current ability to place metadata fields just about anywhere is very cool, but poorly implemented. It appears that Mr. Friedl has managed to fix this inadequacy – I'd love to see his solution made into a plugin that any other plugin can call / see Adobe adopt it.