Quote from GarbeeFuse cards will most likely just have "Fuse" as a part of each halves rules text. They act as the old split cards such as Boom // Bust except they have an added ability that each can be played. I doubt any patches would really be required unless you want to detect Fuse and assign a boolean value to show a split card is that.
On another note, it would be awesome if in the 3.8 update (or some future update) you would shift to using the official set codes. Wikipedia has a good list of them. The official list of older set codes comes from the internal list when it was published in an Ask Wizards column.
The main drawback of using the official list is that you cannot have a folder called "CON" in windows. So if you have cardscans separated into folders by set codes, well, you're mostly screwed. There's ways around it, but it's a hassle.