update-index: do not die too early in a read-only repository.

diff --git a/cache.h b/cache.h
index 87142571b3a7abe7772386afebad73e69ac9540e..c62b0b090d2b3e628764557127f1629d26459fbf 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -302,6 +302,7 @@ extern char *sha1_to_hex(const unsigned char *sha1);        /* static buffer result! */
 extern int read_ref(const char *filename, unsigned char *sha1);
 extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *);
 extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
+extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
 
 extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
 extern int validate_headref(const char *ref);