Triggered by a BLOCK_OPEN ([[) token. The rule verifies the block name
is a or anchor (optionally with _ suffix), parses HTML attributes,
then recursively parses inline content until the matching closing tag.
Produces an "anchor" AST element containing the parsed children, a
semantic target value, and the sanitized attribute map.
Edge cases:
If no matching closing tag is found, the rule fails (returns { success: false }),
allowing the tokens to fall through to other rules or the text fallback.
In paragraph strip mode, newlines within the body and after the closing tag
are consumed silently rather than converted to line-break elements.
The href attribute is sanitized to block javascript:, data:, and
vbscript: schemes.
Inline rule for parsing
[[a]]...[[/a]]blocks.Triggered by a
BLOCK_OPEN([[) token. The rule verifies the block name isaoranchor(optionally with_suffix), parses HTML attributes, then recursively parses inline content until the matching closing tag.Produces an
"anchor"AST element containing the parsed children, a semantictargetvalue, and the sanitized attribute map.Edge cases:
{ success: false }), allowing the tokens to fall through to other rules or the text fallback.hrefattribute is sanitized to blockjavascript:,data:, andvbscript:schemes.