fmt-merge-msg.hon commit diffcore.h: be explicit about the signedness of is_binary (7d0a9a7)
   1#ifndef FMT_MERGE_MSG_H
   2#define FMT_MERGE_MSG_H
   3
   4extern int merge_log_config;
   5extern int fmt_merge_msg_config(const char *key, const char *value, void *cb);
   6
   7#endif /* FMT_MERGE_MSG_H */