Module parser/rules/inline/raw

Parses the Wikidot raw (verbatim) text syntaxes: @@...@@ and @<...>@.

Raw text bypasses all inline formatting -- the content between the delimiters is emitted as-is without interpretation of any Wikidot markup characters.

Two syntax variants are supported:

1. Double-at syntax (@@...@@): The more common form. Content between the markers is treated as raw text. Several Wikidot quirks apply:

   • Empty raw (@@@@ = two consecutive RAW_OPEN tokens) produces no output
   • @@\n@@ (raw spanning a newline with no content) also produces no output
   • Content containing both @< and >@ is discarded entirely
   • >@ followed immediately by @@ is split: > becomes raw content, @@ acts as the closer, and the leftover @ becomes text

2. Angle-bracket syntax (@<...>@): A less common form that also treats content as raw text. If the closing >@ is not found on the same line, @< is treated as literal text. The @<\n>@ spanning pattern outputs only @< as text.

Produces a "raw" AST element whose data field contains the verbatim text string, or empty elements when the raw content is discarded.