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That would break copy file name after a grep, as the separator : would be missed. Different use cases, different wishes... urxvt allows full perl regex for mat

• api 10y ago
  IPv6 addresses have more than one : and have a certain format -- you can distinguish with a simple rule.
  • p1mrx 10y ago
    This tends to work well as a simple filter: ([0-9A-Fa-f]*:){2}[0-9A-Fa-f:.]*