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1) it would be really nice if you could allow the user to share a regex with a friend. IE http://www.regexper.com/shared/some_unique_slug will display my saved regex

2) Add a Favicon

Great work thanks for creating this

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Why not simply the regex itself in the url instead of some unique slug? - No need to store state on the server

I'd avoid it to prevent url encoding problems.

You could base64 it first.

With an effective maximum URL length of 2000 characters, you'd be stuck with a regex limit of around 1300 characters once you take into account the overhead of base64 encoding.

I'm pretty sure this webapp isn't capable of rendering any regex with 1300 character anyway (or if it could, the client couldn't handle that much SVG). I don't expect URL length would be the limiting factor here.

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