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jakelazaroff
on Nov 28, 2018
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ECMAScript regular expressions are getting better ...
What makes regular expressions in most languages not "regular"? Is there a standard from which they deviate?
stplsd
on Nov 28, 2018
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Yes, there is a very specific definition:
https://en.wikipedia.org/wiki/Regular_language
coldtea
on Nov 28, 2018
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"regular" here is a mathematical property related to what patterns should be able to be expressed.
chubot
on Nov 28, 2018
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Yes, there's a mathematical notion of regular expression that predates their use in computers. This article explains the difference well:
https://swtch.com/~rsc/regexp/regexp1.html
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