fix(osmsg/handlers.py): track --length keys independently of --tags

--length keys were only tracked if the same key was also passed to --tags; now the tracked-key set is the union of both.

Author: gauravbarall

osmsg/handlers.py

@@ -120,6 +120,8 @@ def __init__(self, config: dict[str, Any], sequence_id: int, valid_changesets: s
         self.stubs: dict[int, Changeset] = {}
         self.stats: dict[int, ChangesetStats] = {}
 
+        self._tracked_keys = set(config.get("additional_tags") or ()) | set(config.get("length") or ())
+
     def _should_collect(self, uname: str, cs_id: int) -> bool:
         if self.valid_changesets is not None and cs_id not in self.valid_changesets:
             return False
@@ -176,8 +178,8 @@ def _accumulate(self, uid, uname, cs_id, version, tags, kind, way_nodes=None) ->
                 tv.add(action)
                 if length_m:
                     tv.add_length(length_m)
-        elif cfg["additional_tags"]:
-            for k in cfg["additional_tags"]:
+        elif self._tracked_keys:
+            for k in self._tracked_keys:
                 if k not in tags:
                     continue
                 v = tags[k]