How do you debug a regex? [closed]

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You buy RegexBuddy and use its built in debug feature. If you work with regexes more than twice a year, you will make this money back in time saved in no time. RegexBuddy will also help you to create simple and complex regular expressions, and even generate the code for you in a variety of languages.

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Also, according to the developer, this tool runs nearly flawlessly on Linux when used with WINE.

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