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Editorial Team
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Asked: 2026-05-20T09:51:02+00:00

I am rejigging some urls that have been defined in javascript: var x =

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I am rejigging some urls that have been defined in javascript:

var x = "http:\/\/example.com\/test.aspx?v=12.1&x=2&p=3";
var y = "http:\/\/example.com\/test.aspx?v=92.1&x=2&p=4";

My regex to capture the domain part, the path and the querystring into a capture group works great:

(http:\\/\\/example.com\\/)([0-9a-zA-Z-\\\/\._]+)([\?]?)(.+)`

However the sand in the vaseline is that the last double quote is being matched as well. How do a stop matching just before the end quote?

As it happens this is for IIS7’s UrlRwriter so I can’t use any code to strip the end quote off.

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1 Answer

  1. Editorial Team

    I assume you don’t allow quotes in the URL body, so you could just change the (.+) to ([^"]+).

    Edit: It occurs to me you might need to allow for " or ', so you could just change the above to ([^"']+). If you want to be more thorough, you can go with

    ([^"']+)(http:\\/\\/example.com\\/)([0-9a-zA-Z-\\\/\._]+)([\?]?)(.+?)\1

    …and ignore the first capture group. This way, it takes everything up to the next matching quote. That’s probably unnecessary, though. I can’t imagine that you’d want to allow ' or " in your URL string, but the . already matches several characters that aren’t supposed to be in URLs, so I thought I’d leave it up to you.

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