udev substitution rules support both % and $ syntax, so the $(()) arithmetic syntax here is first attempted as a udev substitution and fails with a warning. it has no apparent impact beyond the warning, udev falls back to sending the not-substituted text.
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udev substitution rules support both % and $ syntax, so the
$(())
arithmetic syntax here is first attempted as a udev substitution and fails with a warning. it has no apparent impact beyond the warning, udev falls back to sending the not-substituted text.Fixes: #14