--- a/kallithea/controllers/pullrequests.py	Wed Jan 20 01:47:11 2016 +0100
+++ b/kallithea/controllers/pullrequests.py	Wed Jan 20 01:47:11 2016 +0100
@@ -710,10 +710,11 @@
 
         status = request.POST.get('changeset_status')
         close_pr = request.POST.get('save_close')
+        delete = request.POST.get('save_delete')
         f_path = request.POST.get('f_path')
         line_no = request.POST.get('line')
 
-        if (status or close_pr) and (f_path or line_no):
+        if (status or close_pr or delete) and (f_path or line_no):
             # status votes and closing is only possible in general comments
             raise HTTPBadRequest()
 
@@ -723,6 +724,22 @@
                 h.flash(_('No permission to change pull request status'), 'error')
                 raise HTTPForbidden()
 
+        if delete == "delete":
+            if (pull_request.owner.user_id == c.authuser.user_id or
+                h.HasPermissionAny('hg.admin')() or
+                h.HasRepoPermissionAny('repository.admin')(pull_request.org_repo.repo_name) or
+                h.HasRepoPermissionAny('repository.admin')(pull_request.other_repo.repo_name)
+                ) and not pull_request.is_closed():
+                PullRequestModel().delete(pull_request)
+                Session().commit()
+                h.flash(_('Successfully deleted pull request %s') % pull_request_id,
+                        category='success')
+                return {
+                   'location': url('my_pullrequests'), # or repo pr list?
+                }
+                raise HTTPFound(location=url('my_pullrequests')) # or repo pr list?
+            raise HTTPForbidden()
+
         text = request.POST.get('text', '').strip()
         if close_pr:
             text = _('Closing.') + '\n' + text

--- a/kallithea/public/js/base.js	Wed Jan 20 01:47:11 2016 +0100
+++ b/kallithea/public/js/base.js	Wed Jan 20 01:47:11 2016 +0100
@@ -700,12 +700,28 @@
         var text = $textarea.val();
         var review_status = $form.find('input:radio[name=changeset_status]:checked').val();
         var pr_close = $form.find('input:checkbox[name=save_close]:checked').length ? 'on' : '';
+        var pr_delete = $form.find('input:checkbox[name=save_delete]:checked').length ? 'delete' : '';
 
-        if (!text && !review_status && !pr_close) {
+        if (!text && !review_status && !pr_close && !pr_delete) {
             alert("Please provide a comment");
             return false;
         }
 
+        if (pr_delete) {
+            if (text || review_status || pr_close) {
+                alert('Cannot delete pull request while making other changes');
+                return false;
+            }
+            if (!confirm('Confirm to delete this pull request')) {
+                return false;
+            }
+            var comments = $('.comment').size();
+            if (comments > 0 &&
+                !confirm('Confirm again to delete this pull request with {0} comments'.format(comments))) {
+                return false;
+            }
+        }
+
         $form.find('.submitting-overlay').show();
 
         var postData = {
@@ -713,16 +729,21 @@
             'f_path': f_path,
             'line': line_no,
             'changeset_status': review_status,
-            'save_close': pr_close
+            'save_close': pr_close,
+            'save_delete': pr_delete
         };
         var success = function(json_data) {
-            $comment_div.append(json_data['rendered_text']);
-            comment_div_state($comment_div, f_path, line_no);
-            linkInlineComments($('.firstlink'), $('.comment:first-child'));
-            if ((review_status || pr_close) && !f_path && !line_no) {
-                // Page changed a lot - reload it after closing the submitted form
-                comment_div_state($comment_div, f_path, line_no, false);
-                location.reload(true);
+            if (pr_delete) {
+                location = json_data['location'];
+            } else {
+                $comment_div.append(json_data['rendered_text']);
+                comment_div_state($comment_div, f_path, line_no);
+                linkInlineComments($('.firstlink'), $('.comment:first-child'));
+                if ((review_status || pr_close) && !f_path && !line_no) {
+                    // Page changed a lot - reload it after closing the submitted form
+                    comment_div_state($comment_div, f_path, line_no, false);
+                    location.reload(true);
+                }
             }
         };
         ajaxPOST(AJAX_COMMENT_URL, postData, success);

--- a/kallithea/templates/changeset/changeset_file_comment.html	Wed Jan 20 01:47:11 2016 +0100
+++ b/kallithea/templates/changeset/changeset_file_comment.html	Wed Jan 20 01:47:11 2016 +0100
@@ -82,10 +82,17 @@
                 %if c.pull_request is not None and ( \
                     h.HasPermissionAny('hg.admin')() or h.HasRepoPermissionAny('repository.admin')(c.repo_name) \
                     or c.pull_request.owner.user_id == c.authuser.user_id):
+                <div>
+                  ${_('Finish pull request')}:
                   <label>
                     <input id="save_close" type="checkbox" name="save_close">
                     ${_("Close")}
                   </label>
+                  <label>
+                    <input id="save_delete" type="checkbox" name="save_delete" value="delete">
+                    ${_("Delete")}
+                  </label>
+                </div>
                 %endif
         </div>