1 files changed, 2 insertions, 0 deletions
diff --git a/buffer.h b/buffer.h
index 037055b..7e3c342 100644
--- a/buffer.h
+++ b/buffer.h
@@ -38,5 +38,7 @@ bool buffer_append0(Buffer*, const char *data);
 bool buffer_prepend(Buffer*, const void *data, size_t len);
 /* prepend NUL-terminated data */
 bool buffer_prepend0(Buffer*, const char *data);
+/* return length of a buffer without trailing NUL byte */
+size_t buffer_length0(Buffer*);
 
 #endif