- Try to handle rcsfile write failures in the same way as cvsup, as they are not

necessarily fatal. If the file was incorrectly written, the checksum will
  detect it and the file will be retransferred.

contrib/csup/updater.c

@@ -1682,7 +1682,7 @@ updater_rcsedit(struct updater *up, struct file_update *fup, char *name,
 	stream_close(dest);
 	rcsfile_free(rf);
 	if (error)
-		return (UPDATER_ERR_PROTO);
+		lprintf(-1, "Error writing %s\n", name);
 
 finish:
 	sr->sr_clientattr = fattr_frompath(path, FATTR_NOFOLLOW);