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agessaman
7debb92e9e
{firstlast_distance|prefix_if_nonempty: | F/L Dist: } prints "| F/L Dist: N/A"
on a direct message: the distance helpers return the literal "N/A" when there
is no path to measure, prefix_if_nonempty only asks whether the value is
non-empty, and "N/A" is. Suppressing that needed a gate, and pathbytes_min was
the only one available—so it was being used as a stand-in for "did this
message take any hops", which is not what it asks. It asks how the path is
encoded, so pathbytes_min:2 also discards a one-byte multi-hop path whose
distance is real and measurable.
hops_min:N asks about the route itself. hops_min:1 drops a clause on a direct
message and nothing else:
hops_min:1 pathbytes_min:2
direct cleared cleared
1-byte 2 hops kept cleared <- the difference
2-byte 2 hops kept kept
unknown cleared cleared
An unknown hop count clears the value: a gate that cannot confirm the route
should suppress rather than guess, matching pathbytes_min.
The hop-count logic moves to utils.message_hop_count so the filter and
BaseCommand.get_hops_display_values share one implementation instead of two.
It returns None for unknown rather than 0, since a gate must not read
"cannot tell" as "direct".