https://bugs.gentoo.org/722012

From cfd1d0869d51b7548b3fb738b2f2593c76533d44 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Per=20Nordl=C3=B6w?= <nordlow@users.noreply.github.com>
Date: Wed, 9 Oct 2019 11:03:00 +0200
Subject: [PATCH] Use rx-to-string instead of rx-form to support Emacs master
 (#97)

---
 d-mode.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/d-mode.el b/d-mode.el
index f8211cd..df72b8d 100644
--- a/d-mode.el
+++ b/d-mode.el
@@ -210,7 +210,7 @@ The expression is added to `compilation-error-regexp-alist' and
   (add-to-list
    'compilation-error-regexp-alist-alist
    `(,symbol
-     ,(rx-form
+     ,(rx-to-string
       `(and
 	line-start
 	(group-n 1 (one-or-more any))		; File name