Terrible name. I would expect this to be a constant containing HTML special characters. And why the double underscores, this isn't Python?

A better name would be escapeSpecialChars.

Also there's less than no value in adding comments to the end of short blocks.

Why is `// String.prototype.__condensed` supposed to be useful to anyone when the start of the block is six lines earlier? It's cruft that you end up reading anyway even though it has no value. If I change that tiny block of code, I now have to change that comment too.