Fix incorrect regular expression to permit hyphenated-subdomains #205
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The hyphen in .-_ is not treated as a literal hyphen unless it occurs at the end of the [] group. This can be demonstrated in the JS console: 'hyphenated-site'.match( /^[a-z.-_]+$/ ) // null 'hyphenated-site'.match( /^[a-z._-]+$/ ) // [ ...results ] Reordering these characters allows hyphenated-subdomains to be matched.
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kadamwhite
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rmccue
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nathanielks
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Aug 20, 2020
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The hyphen in .-_ is not treated as a literal hyphen unless it occurs at the end of the [] group. This can be demonstrated in the JS console:
Reordering these characters allows hyphenated-subdomains to be matched.