[BUG] support IPv6 for HiddenServicePort

[nyxnor]

Describe the bug

Didn't test yet if it is broken, but probably is because the square brackes breaks regex [ ].

from scop/bash-completion

# Remove leading [
host=${host#[}
# Remove trailing ] + optional :port
host=${host%]?(:+([0-9]))}

To Reproduce

Expected behavior

Terminal output

Screenshots

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Additional context