Add ignored warning counts to the changeset tags (close #6123)

modules/ui/commit.js

@@ -24,7 +24,8 @@ var readOnlyTags = [
     /^ideditor:/,
     /^imagery_used$/,
     /^host$/,
-    /^locale$/
+    /^locale$/,
+    /^warnings:/
 ];
 
 // treat most punctuation (except -, _, +, &) as hashtag delimiters - #4398
@@ -114,6 +115,18 @@ export function uiCommit(context) {
             }
         }
 
+        var warningCountsByType = {};
+        context.validator().getWarnings().forEach(function(warning) {
+            // deletion count can be derived so don't tag that warning in the changeset
+            if (warning.type === 'many_deletions') return;
+            if (!warningCountsByType[warning.type]) warningCountsByType[warning.type] = 0;
+            warningCountsByType[warning.type] += 1;
+        });
+        for (var warningType in warningCountsByType) {
+            // tag the counts of warnings ignored by the user
+            tags['warnings:' + warningType] = warningCountsByType[warningType].toString();
+        }
+
         _changeset = _changeset.update({ tags: tags });
 
         var header = selection.selectAll('.header')