id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
12374	[patch] compression option for autosave	kolesar	team	"Topic is closely related to #12369 that has been committed as [9461].

When disk space or disk speed is an issue, compressing autosave files can help a lot. By setting preference `autosave.extension` to `osm.gz` JOSM saves compressed files in autosave folder.

This function needs patches in #12370 because `AutosaveTask.getUnsavedLayersFiles()` uses `OsmImporter.FILE_FILTER`. This included only .osm and .xml extensions, therefore did not find compressed files at startup in autosave folder. Combined filter contains .osm, .osm.gz and .osm.bz2 as well.

If accepted, this option can later have a dropdown list on preferences dialog (map settings / file backup)."	enhancement	closed	normal	16.02	Core		fixed	compression autosave