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This regex matches HTML href attributes, capturing the URL value following href=. It expects one or more opening quotes, then one or more characters from a limited set including letters, digits, hyphens, underscores, dots, equals signs, and forward slashes, followed by a closing quote. Commonly used for basic link extraction from HTML documents in web scraping, data mining, or validation tasks. Note this is a simplified pattern that may miss URLs with query strings, fragments, or special characters.