** then szFile will become zero (for an empty file) or positive.
      ** Special case:  Assume any file with a basename of ".fossil" does
      ** not exist.
      */
      zCleanRepo = file_cleanup_fullpath(zRepo);
      if( szFile==0 && sqlite3_strglob("*/.fossil",zRepo)!=0 ){
        szFile = file_size(zCleanRepo, ExtFILE);
        if( szFile>0 && !file_isfile(zCleanRepo, ExtFILE) ){
          /* Only let szFile be non-negative if zCleanRepo really is a file
          ** and not a directory or some other filesystem object. */
          szFile = -1;
        }
        if( g.fHttpTrace ){
          sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", szFile);
          @ <!-- file_size(%h(zCleanRepo)) is %s(zBuf) -->
          fprintf(stderr, "# file_size(%s) = %s\n", zCleanRepo, zBuf);
        }
      }