a

libc/runestrecpy.c

@@ -0,0 +1,17 @@
+#include <u.h>
+#include <libc.h>
+
+Rune*
+runestrecpy(Rune *s1, Rune *es1, Rune *s2)
+{
+	if(s1 >= es1)
+		return s1;
+
+	while(*s1++ = *s2++){
+		if(s1 == es1){
+			*--s1 = '\0';
+			break;
+		}
+	}
+	return s1;
+}