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feat!: flank emphasis by the CJK-friendly amendments - #30
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`这是**重点。**然后` now holds a Strong: every emphasis-like delimiter run (`*`, `_`, `~~`, `==`) decides left- and right-flanking by the markdown-cjk-friendly amendments to CommonMark, so a run beside a CJK character or CJK punctuation is not blocked the way ASCII punctuation blocks it. CommonMark and GFM conformance is unchanged; the amendments' own test inputs render as micromark-extension-cjk-friendly renders them. BREAKING CHANGE: text beside CJK characters that read as literal delimiters may now read as emphasis, strikethrough, or highlight. Decision 0018 supersedes 0015. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012iScek4mjbrpjjJQd5YxJC
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Requested by Plimeor · project thread
Before:
这是**重点。**然后parses as plain text, because CommonMark's flanking rules treat。like ASCII punctuation and Chinese puts no space after it.After: it holds a
Strongaround重点。. Every emphasis-like run (*,_,~~,==) decides left- and right-flanking by the markdown-cjk-friendly amendments (spec at5b17173, Unicode 18 ranges), as micromark-extension-cjk-friendly does.How: a new
unicode_cjktable (copied from the amendments'ranges.md) and a two-sided classification indelimiter_flanking_within, which owns flanking for all four marks; a variation selector before a run reads as the char it follows. The amendments' own test inputs (123 cases) are checked intests/fixtures/syntax_decisions/cjk_friendly_emphasis.caseswith HTML verified against micromark-extension-cjk-friendly 2.0.2. The CommonMark/GFM bench stays at 2113/2113 and no golden moved. One regression test flips:a*。*bnow forms emphasis, as the reference renders it.Docs:
inline-syntaxgains "CJK-friendly emphasis flanking" and "CommonMark inlines" names the exception; decision 0018 supersedes 0015; the plan is archived atdocs/archive/2026-10-18-cjk-friendly-emphasis/.Breaking: text beside CJK characters that read as literal delimiters may now read as emphasis, strikethrough, or highlight.
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