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Asked: 2026-06-04T15:21:45+00:00

My regex: https?://[\w-]+(?:\.[\w-]+)+(?:/[\w-]+)*(?:[./%?=&#-]\w+)+)? In Ruby, I get the following error: unmatched close parenthesis:/https?://[\w-]+(?:\.[\w-]+)+(?:/[\w-]+)*(?:[./%?=&#-]\w+)+)?/’ How

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My regex:

https?://[\w-]+(?:\.[\w-]+)+(?:/[\w-]+)*(?:[./%?=&#-]\w+)+)?

In Ruby, I get the following error:

unmatched close parenthesis:/https?://[\w-]+(?:\.[\w-]+)+(?:/[\w-]+)*(?:[./%?=&#-]\w+)+)?/'

How can I fix this?

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1 Answer

  1. Editorial Team

    I don’t know how I could be clearer than the error message. Your regex has an unmatched close parenthesis.

    https?://[\w-]+(?:.[\w-]+)+(?:/[\w-]+)*(?:[./%?=&#-]\w+)+)?

    Notice how there’s 3 ( and 4 )

    Further reading in regexes http://www.regular-expressions.info/tutorial.html

    Specifically, you may want to check out the character information http://www.regular-expressions.info/characters.html

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