merge-blobs.hon commit t4006-diff-mode.sh: use the $( ... ) construct for command substitution (e1d6b55)
   1#ifndef MERGE_BLOBS_H
   2#define MERGE_BLOBS_H
   3
   4#include "blob.h"
   5
   6extern void *merge_blobs(const char *, struct blob *, struct blob *, struct blob *, unsigned long *);
   7
   8#endif /* MERGE_BLOBS_H */