Two characters might have identical Unicode skeletons but render differently in specific fonts, or have different skeletons but render identically in a particular typeface. Detecting this requires rendering glyphs and comparing pixel output. No purely Unicode-data-based approach handles it, and UTS #39 does not attempt to.
Cyrillic homoglyphs: the real threat
，详情可参考同城约会
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复制生成的 Mermaid 代码块。