Yes, my current editor setup is to display tabs as they were 4 spaces, but it doesn't expand them to actually be spaces. These variables appear to be lined up in my editor, but it appears that Github expands the tabs to be 8 spaces instead of 4. Using tabs over spaces can save a significant amount of space in larger files (if they aren't minified or any such thing, of course), but for the purpose of readability, it might behoove me to revert to using spaces (and then perform the compression/minification on a production version).