Add raw HTML blocks to the markdown parser - #33
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A line starting with '<' followed by a letter, '/' or '!' now opens a raw HTML block that runs verbatim until the next blank line (or end of input). The lines are neither inline-parsed nor escaped when rendered, so authors can embed elements the markdown syntax has no notation for, e.g. an iframe. Previously such a line fell through to consumeParagraph: and came out as escaped tag soup. Follows the existing four-part shape: #htmlBlock classification in FOLineClassifier (checked after the indented-code rule, so indented tags stay code), consumeHTMLBlock: in FOMarkdownParser, the FORawHTMLBlock node, and visitRawHTMLBlock: on both visitors (HTML: unchanged string, plain text: ''). No tag whitelist, no tag balancing, no inline HTML inside paragraphs; a '<' followed by a space or digit (as in '5 < 3') is still paragraph text. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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A line starting with '<' followed by a letter, '/' or '!' now opens a raw HTML block that runs verbatim until the next blank line (or end of input). The lines are neither inline-parsed nor escaped when rendered, so authors can embed elements the markdown syntax has no notation for, e.g. an iframe. Previously such a line fell through to consumeParagraph: and came out as escaped tag soup.
Follows the existing four-part shape: #htmlBlock classification in FOLineClassifier (checked after the indented-code rule, so indented tags stay code), consumeHTMLBlock: in FOMarkdownParser, the FORawHTMLBlock node, and visitRawHTMLBlock: on both visitors (HTML: unchanged string, plain text: '').
No tag whitelist, no tag balancing, no inline HTML inside paragraphs; a '<' followed by a space or digit (as in '5 < 3') is still paragraph text.