From 64fa986cd089b60ef5da72cfa149813041011537 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C5=99emysl=20Janouch?= <p.janouch@gmail.com>
Date: Thu, 18 Sep 2014 20:59:29 +0200
Subject: Implement the indicator etc.

---
 utils.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'utils.c')

diff --git a/utils.c b/utils.c
index 11c3d68..b727ef0 100644
--- a/utils.c
+++ b/utils.c
@@ -286,6 +286,24 @@ xstrndup (const char *s, size_t n)
 			(link)->next->prev = (link)->prev;                                 \
 	BLOCK_END
 
+#define LIST_APPEND_WITH_TAIL(head, tail, link)                                \
+	BLOCK_START                                                                \
+		(link)->prev = (tail);                                                 \
+		(link)->next = NULL;                                                   \
+		if ((link)->prev)                                                      \
+			(link)->prev->next = (link);                                       \
+		else                                                                   \
+			(head) = (link);                                                   \
+		(tail) = (link);                                                       \
+	BLOCK_END
+
+#define LIST_UNLINK_WITH_TAIL(head, tail, link)                                \
+	BLOCK_START                                                                \
+		if ((tail) == (link))                                                  \
+			(tail) = (link)->prev;                                             \
+		LIST_UNLINK ((head), (link));                                          \
+	BLOCK_END
+
 // --- Dynamically allocated string array --------------------------------------
 
 struct str_vector
-- 
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