Markup in use

• "like this"
• 'like this'
• `like this'
• >>like this like this Plugin insertion failed: Could not find plugin like
• »like this«
• » like this «
• «like this»
• ,,like this''
• ''like this''
• ``like this''
• “like this”
• ’like this’
• „like this”
• ‟like this”
• ‚like this’
• -- like this --
• — like this —
• [ like this ]
• {like this}
• <like this>
• /like this/
• 「like this」
• 『like this』

Requirements

• suggesting the meaning of quotation
• unambiguous with existing markup
• not colliding with common quotation markup (but can be one of them)
• possible to nest (using different markup for opening and closing)
• easy to type
• not exceedingly ugly

Possibilities

• ``like this'' -- possible conflict with subscript and common markup for italics
• ,,like this'' -- possible conflict with common markup for italics
• ""like this"" -- can't nest