1 files changed, 6 insertions, 0 deletions
diff --git a/lib/bufq.h b/lib/bufq.h
index b220f01ec..b42a880ac 100644
--- a/lib/bufq.h
+++ b/lib/bufq.h
@@ -214,6 +214,12 @@ bool Curl_bufq_peek_at(struct bufq *q, size_t offset,
  */
 void Curl_bufq_skip(struct bufq *q, size_t amount);
 
+/**
+ * Same as `skip` but shift tail data to the start afterwards,
+ * so that further writes will find room in tail.
+ */
+void Curl_bufq_skip_and_shift(struct bufq *q, size_t amount);
+
 typedef ssize_t Curl_bufq_writer(void *writer_ctx,
                                  const unsigned char *buf, size_t len,
                                  CURLcode *err);