c.aFrom = break_into_lines(blob_str(pA_Blob), blob_size(pA_Blob),
                             &c.nFrom, pCfg->diffFlags);
  c.aTo = break_into_lines(blob_str(pB_Blob), blob_size(pB_Blob),
                           &c.nTo, pCfg->diffFlags);
  if( c.aFrom==0 || c.aTo==0 ){
    fossil_free(c.aFrom);
    fossil_free(c.aTo);
    if( sqldiff(pA_Blob, pB_Blob, pOut, pCfg) ){
      /* An SQL diff has been put into pOut */
    }else if( pOut ){
      diff_errmsg(pOut, DIFF_CANNOT_COMPUTE_BINARY, pCfg->diffFlags);
    }
    return 0;
  }

  /* Compute the difference */
  diff_all(&c);