Improve message and add tooltip to tag_suggeset_area validation

data/core.yaml

@@ -1160,7 +1160,8 @@ en:
     many_deletions:
       message: "You're deleting {n} features: {p} nodes, {l} lines, {a} areas, {r} relations. Are you sure you want to do this? This will delete them from the map that everyone else sees on openstreetmap.org."
     tag_suggests_area:
-      message: "The tag {tag} suggests line should be area, but it is not an area."
+      message: 'Feature is a line, but the tag "{tag}" suggests it should be an area.'
+      tip: Areas must have connected endpoints.
     deprecated_tags:
       message: '{feature} has outdated tags: {tags}'
       tip: Some tags become deprecated over time and should be replaced.

dist/locales/en.json

@@ -1408,7 +1408,8 @@
                 "message": "You're deleting {n} features: {p} nodes, {l} lines, {a} areas, {r} relations. Are you sure you want to do this? This will delete them from the map that everyone else sees on openstreetmap.org."
             },
             "tag_suggests_area": {
-                "message": "The tag {tag} suggests line should be area, but it is not an area."
+                "message": "Feature is a line, but the tag \"{tag}\" suggests it should be an area.",
+                "tip": "Areas must have connected endpoints."
             },
             "deprecated_tags": {
                 "message": "{feature} has outdated tags: {tags}",

modules/validations/tag_suggests_area.js

@@ -9,7 +9,7 @@ import {
 
 // https://github.com/openstreetmap/josm/blob/mirror/src/org/
 // openstreetmap/josm/data/validation/tests/UnclosedWays.java#L80
-export function validationTagSuggestsArea() {
+export function validationTagSuggestsArea(context) {
 
     function tagSuggestsArea(tags) {
         if (_isEmpty(tags)) return false;
@@ -32,16 +32,17 @@ export function validationTagSuggestsArea() {
     var validation = function(entitiesToCheck, graph) {
         var issues = [];
         for (var i = 0; i < entitiesToCheck.length; i++) {
-            var change = entitiesToCheck[i];
-            var geometry = change.geometry(graph);
-            var suggestion = (geometry === 'line' ? tagSuggestsArea(change.tags) : undefined);
+            var entity = entitiesToCheck[i];
+            var geometry = entity.geometry(graph);
+            var suggestion = (geometry === 'line' ? tagSuggestsArea(entity.tags) : undefined);
 
             if (suggestion) {
                 issues.push(new validationIssue({
                     type: ValidationIssueType.tag_suggests_area,
                     severity: ValidationIssueSeverity.warning,
                     message: t('issues.tag_suggests_area.message', { tag: suggestion }),
-                    entities: [change],
+                    tooltip: t('issues.tag_suggests_area.tip'),
+                    entities: [entity],
                 }));
             }
         }