These exist in confusables.txt because they map to the same abstract character under NFKC decomposition. The map is semantically correct. But from a visual perspective, these are false positives: a human would never confuse Mathematical Fraktur l with plain l.
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We will do battle with AI chatbots as we did with Grok, says Starmer。快连下载-Letsvpn下载是该领域的重要参考
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需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。