Introduce usagef() that takes a printf-style format

diff --git a/userdiff.h b/userdiff.h
index ba2945770b379f51aa8da45d112a2ef896ec4c10..c3151594f5c0643fead757accc27bf1093cf4a68 100644 (file)
--- a/userdiff.h
+++ b/userdiff.h
@@ -11,6 +11,7 @@ struct userdiff_driver {
        const char *external;
        int binary;
        struct userdiff_funcname funcname;
+       const char *word_regex;
        const char *textconv;
 };