Block Grammar Edit

Block_List
  = $(!Block .)* (Block $(!Block .)*)* $(.*)

Block
  = Block_Void
  / Block_Balanced

Block_Void
  = "<!--" __ "wp:" Block_Name __ (Block_Attributes __)? "/-->"

Block_Balanced
  = Block_Start (Block / $(!Block !Block_End .)+)* Block_End

Block_Start
  = "<!--" __ "wp:" Block_Name __ (Block_Attributes __)? "-->"

Block_End
  = "<!--" __ "/wp:" Block_Name __ "-->"

Block_Name
  = Namespaced_Block_Name
  / Core_Block_Name

Namespaced_Block_Name
  = $(Block_Name_Part "/" Block_Name_Part)

Core_Block_Name
  = $(Block_Name_Part)

Block_Name_Part
  = $([a-z] [a-z0-9_-]*)

JSON-encoded attributes embedded in a block’s opening comment

Block_Attributes
  = $("{" (!("}" __ "" "/"? "-->") .)* "}")

__
  = [ \t\r\n]+