neil bed15ba844 dns_freedns.sh: use grep -E, BRE \| alternation is a GNU extension ...

OpenBSD grep treats \| in a BRE as a literal | character, so
_freedns_domain_id never matched any row and every domain lookup
failed with "Domain not found". Switch to ERE with -E, keeping the
parens escaped so the (.*) suffix branch still requires literal
parentheses and does not widen the match (e.g. searching example.com
must not match example.company).

Reported-by: @katiekloss @boretom
Ref: https://github.com/acmesh-official/acme.sh/issues/2305

2026-07-10 10:23:59 +08:00

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