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Comment by joepvd | Hacker News Reader

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 matching text[1].

IPv6 addresses have more than one : and have a certain format -- you can distinguish with a simple rule.

This tends to work well as a simple filter:

  ([0-9A-Fa-f]*:){2}[0-9A-Fa-f:.]*