Introduce usagef() that takes a printf-style format

diff --git a/builtin-clean.c b/builtin-clean.c
index 05c763cbec61cd41bde3b424c22563c155105fd0..28cdcd0274dd5891c7ad3dc3804cb0acead883f2 100644 (file)
--- a/builtin-clean.c
+++ b/builtin-clean.c
@@ -41,7 +41,7 @@ int cmd_clean(int argc, const char **argv, const char *prefix)
        struct option options[] = {
                OPT__QUIET(&quiet),
                OPT__DRY_RUN(&show_only),
-               OPT_BOOLEAN('f', NULL, &force, "force"),
+               OPT_BOOLEAN('f', "force", &force, "force"),
                OPT_BOOLEAN('d', NULL, &remove_directories,
                                "remove whole directories"),
                OPT_BOOLEAN('x', NULL, &ignored, "remove ignored files, too"),