You can also skip the " in many places, to be even more minimal. Browsers don't follow the standard here completely, so you can do: <a href = /some<!--li=nk<<

You can also skip the " in many places, to be even more minimal. Browsers don't follow the standard here completely, so you can do: <a href = /some<!--li=nk<<"&wer' >link</a> and all that garbage is parsed as is as attribute content until the first space or >. Only thing that terminates attribute value is > or whitespace. You can also use entity refs in unqoted value. That means you can use unquoted attribute values for almost anything that doesn't contain whitespace when writing html manually.