From ba1a3656a14e9b71ca4e0608eb32b808f7e8de86 Mon Sep 17 00:00:00 2001
From: David Given <dg@cowlark.com>
Date: Wed, 28 Sep 2016 23:39:00 +0200
Subject: [PATCH] You can tell whether an item already exists in the array when
 calling array_appendu() now.

---
 modules/src/data/array.c | 9 ++++++---
 modules/src/data/array.h | 2 +-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/modules/src/data/array.c b/modules/src/data/array.c
index 68fad1ff5..8943323cb 100644
--- a/modules/src/data/array.c
+++ b/modules/src/data/array.c
@@ -31,10 +31,13 @@ bool array_contains(void* arrayp, void* value)
 	return false;
 }
 
-void array_appendu(void* arrayp, void* value)
+bool array_appendu(void* arrayp, void* value)
 {
-	if (!array_contains(arrayp, value))
-		array_append(arrayp, value);
+	if (array_contains(arrayp, value))
+        return true;
+
+    array_append(arrayp, value);
+    return false;
 }
 
 void array_remove(void* arrayp, void* value)
diff --git a/modules/src/data/array.h b/modules/src/data/array.h
index 156bad1e2..601873571 100644
--- a/modules/src/data/array.h
+++ b/modules/src/data/array.h
@@ -18,7 +18,7 @@ struct array
 	}
 
 extern void array_append(void* array, void* value);
-extern void array_appendu(void* array, void* value);
+extern bool array_appendu(void* array, void* value);
 extern void array_remove(void* array, void* value);
 extern bool array_contains(void* array, void* value);