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Asked: 2026-05-22T23:02:16+00:00

I’m looking for a concise list of all the regular expression syntax (sort of

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I’m looking for a concise list of all the regular expression syntax (sort of like a cheatsheet) and I found this tool: http://erik.eae.net/playground/regexp/regexp.html

in which if you click on the question mark on the top right corner it will display some sort of dictionary of regular expressions…

my question is….is this list comprehensive or is it missing something?

if anyone knows a better list, please let me know as well

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  1. Editorial Team

    Regex syntax varies between different implementations. Therefore, there is unlikely to be an absolutely definitive syntax list which covers everything. You may get one which covers all possible options for regex in a given language, but you’d need a different reference for regex implementations in other languages.

    For example, some regex implementations allow named classes such as [:space:] or [:digit:], which don’t exist in others.

    My favourite reference site for regular expressions is http://www.regular-expressions.info, which does include details of differences in regex between various languages, but I’ll be the first to acknowledge that it doesn’t cover everything.

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