#1 Empty Element Expansion

[Jon Purdy]

The expansion of a tag with no content is always "<tag/>", regardless of whether an empty block was specified. Most notably, 'script (...) {}' is identical to 'script (...);', which is a potential browser compatibility problem, not to mention being simply confusing. Current workaround is to specify a literal empty element with '{ "" }'. Ideally, the rule should be: if it looks like a block and it quacks like a block, it bloody ought to be a block.