• @[email protected]
    link
    fedilink
    37 hours ago

    Empty input Or input of exactly 1 character Or input of at least 2 characters, followed by at least 1 something (idk what \1 matches)

    Did I get it (almost)?

    • @thevoidzero
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      1
      edit-2
      4 hours ago

      \1 is group 1 which is inside (), so second part is repeated 2 or more times of 2 or more char.