用于重定向通用URL的正则表达式

Question

我们如何将这两个重定向URL合并(使其泛化)为一个。

例如：

URL1：(?i)/MathBlog/10-common-math-errors-made-by-elementary-students/ => /mathblog/common-math-errors-made-by-elementary-students/

URL2：(?i)/MathBlog/amp/10-common-math-errors-made-by-elementary-students/ => /mathblog/amp/common-math-errors-made-by-elementary-students/

应该成为URL3：(?i)/MathBlog/{regex}/10-common-math-errors-made-by-elementary-students/ => /mathblog/{/amp}/common-math-errors-made-by-elementary-students/

{/amp}必须是可选的，例如，如果/amp可用，则追加到重定向url或直接忽略它。

Answer 1

这样如何：

(?i)(\/MathBlog(?:\/amp)?\/)10-(common-math-errors-made-by-elementary-students\/) => $1$2

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