Description lists are unescapable

[Christian Boos]

Once a "::" is seen in an indented line, it's always recognized as a description list separator, and there's no way to escape it.

In a bulleted list, it's OK, therefore I can write the following:

• neither with "!::" (rendered as "!::")
• nor with the code block syntax {{{::}}} (rendered as ::)
• nor with backticks `::` (rendered as ::).

But if I repeat the above 3 lines, this time without the bullet:

neither with "!::" (rendered as "!::") nor with the code block syntax {{{::}}} (rendered as ::) nor with backticks `::` (rendered as ::).

The :: turns each line in a description term, ignoring any form of escape.

[Matthew Good]

Ok, I guess since I wrote the DL stuff I'll take this one.