duh, cut-and-paste error

buffer/buffer_putnlflush.c

@@ -1,7 +1,7 @@
 #include "str.h"
 #include "buffer.h"
 
-int buffer_putspace(buffer* b) {
+int buffer_putnlflush(buffer* b) {
   static char nl='\n';
   return buffer_putflush(b,&nl,1);
 }