Enable relative timestamp search

[smootheFiets]

JOSM search supports absolute timestamp searches like "timestamp:/2019" meaning "timestamp of last edit before 2019-01-01.0." I'd like to perform relative searches, i.e., to find objects older/younger than some number of days/years/microseconds. I don't seem to see that capability, but maybe I'm overlooking something? It would be useful for quality-assurance type of work, and it would be easy to implement (I guess).

My immediate use case is the JOSM validator. I've set up a validator.mapcss file that throws warnings at objects that may be outdated on OSM (​https://github.com/smootheFiets/validator/blob/master/outdated.validator.mapcss). The timestamp search is out-sourced to JOSM like "[JOSM_search("timestamp:/2019")]". Hard-wiring the date into the code strikes me as undesirable; it means I have to update the file every year or so for trivial reasons. Surely there must be a more elegant way?

Obviously, a solution that works in straight mapcss instead of JOSM search is fine by me.

PS: I've asked the same question in the OSM forum, receiving no answers. I take this to mean that, currently, this is not a capability that JOSM has. Please correct me if I'm wrong!
​https://forum.openstreetmap.org/viewtopic.php?id=73802

[skyper]

Sorry, for not responding, but yes there is not support, yet.

I have some rules where I like to get the current date and compare it with a value. E.g. I want to warn if the gtfs:release_date=2020-01-07 is older than 1½ years.

[skyper]

See also #23375