FEATURE: add the pencil glyph when the post was edited after the first flag

app/assets/javascripts/admin/models/flagged_post.js

@@ -46,6 +46,14 @@ Discourse.FlaggedPost = Discourse.Post.extend({
     return "<i class='fa " + icon + "' title='" + title + "'></i>";
   },
 
+  wasEdited: function () {
+    if (this.blank("last_revised_at")) { return false; }
+    var lastRevisedAt = Date.parse(this.get("last_revised_at"));
+    return _.some(this.get("post_actions"), function (postAction) {
+      return Date.parse(postAction.created_at) < lastRevisedAt;
+    });
+  }.property("last_revised_at", "post_actions.@each.created_at"),
+
   conversations: function () {
     var self = this;
     var conversations = [];

app/assets/javascripts/admin/templates/flags.js.handlebars

@@ -29,6 +29,7 @@
                 {{#if flaggedPost.postAuthorFlagged}}
                   {{#if flaggedPost.user}}
                     {{#link-to 'adminUser' flaggedPost.user}}{{avatar flaggedPost.user imageSize="small"}}{{/link-to}}
+                    {{#if flaggedPost.wasEdited}}<i class="fa fa-pencil" title="{{i18n admin.flags.was_edited}}"></i>{{/if}}
                   {{/if}}
                 {{/if}}
               </td>

app/assets/stylesheets/common/admin/admin_base.scss

@@ -504,6 +504,7 @@ section.details {
   .user {
     width: 20px;
     padding: 8px 0 0 0;
+    text-align: center;
   }
   .excerpt {
     max-width: 700px;

config/locales/client.en.yml

@@ -1512,6 +1512,7 @@ en:
         no_results: "There are no flags."
         topic_flagged: "This <strong>topic</strong> has been flagged."
         visit_topic: "Visit the topic to take action"
+        was_edited: "Post was edited after the first flag"
 
         summary:
           action_type_3:

lib/flag_query.rb

@@ -25,7 +25,12 @@ module FlagQuery
              p.topic_id,
              p.post_number,
              p.hidden,
-             p.deleted_at
+             p.deleted_at,
+             (SELECT pr.created_at
+                FROM post_revisions pr
+               WHERE pr.post_id = p.id AND pr.user_id = p.user_id
+            ORDER BY created_at DESC
+               LIMIT 1) AS last_revised_at
         FROM posts p
        WHERE p.id in (:post_ids)").map_exec(OpenStruct, post_ids: post_ids)