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Predicting how emphasis delimiters are rendered inside words matters for documentation that contains identifiers, URLs and code-like text. The rendering is not uniform across Markdown implementations. CommonMark defines left and right flanking rules for emphasis delimiters, which restricts underscore emphasis inside words while allowing asterisk emphasis und
The goal is to decide how a Markdown parser should handle emphasis markers that span a raw newline without an explicit hard‑break or escape, so that deployment logs consistently reflect either a warning or correct output. Current CommonMark specifications permit line breaks inside emphasis only when the break is escaped or represented by a hard line break; m
Goal We need to migrate a large repository from legacy Markdown to CommonMark 0.30 while keeping intra‑word emphasis such as a_b rendered correctly. Constraints CommonMark 0.30 removes underscore emphasis inside words, a feature that legacy parsers still support. No standard parser flag currently restores this behavior, and the change creates a compatibility