29 lines
1021 B
Python
29 lines
1021 B
Python
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import re
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def reproduce_bug_v2():
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# 模拟更接近旧版实际代码的情况
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# 旧版代码中循环多次处理，且正则可能在处理嵌套或连续块时出现偏移
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text = "I **prefer** tea **to** coffee."
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# 这是一个贪婪且不具备前瞻断言的正则
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buggy_pattern = re.compile(r"(\*\*)( +)(.*?)( +)(\*\*)")
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# 模拟那种“只要看到 ** 且中间有空格就想修”的逻辑
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# 如果文本是 "I **prefer** tea **to**"
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# 这里的空格出现在 "prefer**" 和 "**to" 之间
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content = "I **prefer** tea **to** coffee."
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# 错误的匹配尝试：将第一个块的结尾和第二个块的开头误认为是一对
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# I **prefer** tea **to**
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# ^^ ^^
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# A B
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# 正则误以为 A 是开始，B 是结束
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bug_result = re.sub(r"\*\*( +)(.*?)( +)\*\*", r"**\2**", content)
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print(f"Input: {content}")
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print(f"Output: {bug_result}")
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if __name__ == "__main__":
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reproduce_bug_v2()
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