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Editorial Team
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Asked: 2026-05-26T11:31:49+00:00

I have the regex expression #(\w+) to catch a hashtag like #wine in a

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I have the regex expression #(\w+) to catch a hashtag like #wine in a string and it also happens to pickup on html entities like '. I’d need it to avoid these by looking for the ampersand. How can I validate this?

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1 Answer

  1. Editorial Team

    I suggest using a negative lookbehind assertion if your language’s regex engine supports them:

    (?<!&)#(\w+)

    Failing that, this would do the trick (although somewhat less elegantly):

    (?:^|[^&])#(\w+)
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