I see this happen for the second time now. At first it happened when I edited this question to improve formatting. If you look at the comments you'll see some questions to me I didn't really know how to answer: somehow I significantly changed the code (apparently).
Now it happens again here. To understand that no harm was introduced by the edits one needs to look at the source of the initial revision. Has it always been that some slashes are not displayed on SO in regular text? (and in the first case, it's not only slashes: somehow
2 disappeared as well)