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@brianmcallister
Created November 16, 2017 17:21
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\.(
[a-z]+
(-(?!-))?)+
(?:
__
([a-z]+(-(?!-))?)+
)?
(?:
--
([a-z]+(-(?!-))?
)+
)?
.a
.a-b__c
.a__
.a__b
.a--b
.a__b--c
.asdf__asdf--asdf
.a-b-c-d
.a__b__c
.a--b__c
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