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Shouldn't it be: ^\.{3}(\..{3}){3}$ because you want to match "..." followed by "\..." 3 times?
^\.{3}(\..{3}){3}$
"..."
"\..."
However, something like ^(\.?.{3}){4}$ would also match "..." repeated 4 times, e.g. "abcabcabcabc"? Unless I just misunderstood the question.
^(\.?.{3}){4}$
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Matching Anything But a Newline
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Shouldn't it be:
^\.{3}(\..{3}){3}$because you want to match"..."followed by"\..."3 times?However, something like
^(\.?.{3}){4}$would also match "..." repeated 4 times, e.g. "abcabcabcabc"? Unless I just misunderstood the question.