1 files changed, 19 insertions, 0 deletions
diff --git a/src/meta.c b/src/meta.c
index 2cc263c..eac2d68 100644
--- a/src/meta.c
+++ b/src/meta.c
@@ -144,3 +144,22 @@ meta_free(struct metadef *def)
 		}
 	}
 }
+
+struct metadef *
+metadef_join(struct metadef *a, struct metadef *b)
+{
+	struct metadef *np;
+	size_t i, j;
+
+	for (i = 0; a[i].kw; i++);
+	if (b)
+		for (j = 0; b[j].kw; j++);
+	else
+		j = 0;
+	np = grecs_malloc((i + j + 1) * sizeof(a[0]));
+	memcpy(np, a, i * sizeof(a[0]));
+	if (j > 0)
+		memcpy(np + i, b, j * sizeof(b[0]));
+	np[i + j].kw = NULL;
+	return np;
+}