static void flush_buffer (char *buf, size_t * len, CONNECTION * conn);
static int msg_fetch_header (CONTEXT * ctx, IMAP_HEADER * h, char *buf,
FILE * fp);
static void flush_buffer (char *buf, size_t * len, CONNECTION * conn);
static int msg_fetch_header (CONTEXT * ctx, IMAP_HEADER * h, char *buf,
FILE * fp);