do not write null sha1s to on-disk index

diff --git a/userdiff.h b/userdiff.h
index 942d5949501027fb5d30e0d59629aab38fd2669a..4a7e78ffbcc6d552a39dcccd9008d6c11919e432 100644 (file)
--- a/userdiff.h
+++ b/userdiff.h
@@ -23,4 +23,6 @@ int userdiff_config(const char *k, const char *v);
 struct userdiff_driver *userdiff_find_by_name(const char *name);
 struct userdiff_driver *userdiff_find_by_path(const char *path);
 
+struct userdiff_driver *userdiff_get_textconv(struct userdiff_driver *driver);
+
 #endif /* USERDIFF */