Create comment on changing issue title

src/main/scala/gitbucket/core/controller/IssuesController.scala

@@ -154,15 +154,25 @@ trait IssuesControllerBase extends ControllerBase {
   ajaxPost("/:owner/:repository/issues/edit_title/:id", issueTitleEditForm)(readableUsersOnly { (title, repository) =>
     defining(repository.owner, repository.name) {
       case (owner, name) =>
-        getIssue(owner, name, params("id")).map { issue =>
-          if (isEditableContent(owner, name, issue.openedUserName)) {
-            // update issue
-            updateIssue(owner, name, issue.issueId, title, issue.content)
-            // extract references and create refer comment
-            createReferComment(owner, name, issue.copy(title = title), title, context.loginAccount.get)
-
-            redirect(s"/${owner}/${name}/issues/_data/${issue.issueId}")
-          } else Unauthorized()
+        getIssue(owner, name, params("id")).map {
+          issue =>
+            if (isEditableContent(owner, name, issue.openedUserName)) {
+              if (issue.title != title) {
+                // update issue
+                updateIssue(owner, name, issue.issueId, title, issue.content)
+                // extract references and create refer comment
+                createReferComment(owner, name, issue.copy(title = title), title, context.loginAccount.get)
+                createComment(
+                  owner,
+                  name,
+                  context.loginAccount.get.userName,
+                  issue.issueId,
+                  issue.title + "\r\n" + title,
+                  "change_title"
+                )
+              }
+              redirect(s"/${owner}/${name}/issues/_data/${issue.issueId}")
+            } else Unauthorized()
         } getOrElse NotFound()
     }
   })

src/main/twirl/gitbucket/core/issues/commentlist.scala.html

@@ -228,6 +228,17 @@
           </div>
         </div>
       }
+      case "change_title" => {
+        <div class="discussion-item discussion-item-pencil">
+          <div class="discussion-item-header">
+            <span class="discussion-item-icon"><i class="octicon octicon-pencil"></i></span>
+            @helpers.avatar(comment.commentedUserName, 16)
+            @helpers.user(comment.commentedUserName, styleClass="username strong")
+            change title from <code>@comment.content.split("\r\n")(0)</code> to <code>@comment.content.split("\r\n")(1)</code>
+            @gitbucket.core.helper.html.datetimeago(comment.registeredDate)
+          </div>
+        </div>
+      }
       case _ => {
         @showFormattedComment(comment)
       }