On a regular basis (pun intended), I am using regular expressions for simple parsing tasks. Writing or debugging a regular expression is not always super easy. I found that web site [1] is quite helpful to experiment with regular expressions and input strings.
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| Using the default prce (php) flavor |
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| Groups captured are color coded |
The tools supports different flavors (I suspect
pcre (php) is the most "standard"). Indeed this version checks out my regexp. However when using the
javascript version, I see:
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| No match with Javascript flavor |
With the
pcre (php) there is even a debugging tool which explains in detail how the regexp algorithm proceeds:
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| Debugger |
References
- Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript, https://regex101.com/
