merge-file.hon commit mergetool: support --tool-help option like difftool does (109859e)
   1#ifndef MERGE_FILE_H
   2#define MERGE_FILE_H
   3
   4extern void *merge_file(const char *path, struct blob *base, struct blob *our,
   5                        struct blob *their, unsigned long *size);
   6
   7#endif