docs: public void escape(Pointer _src, int len) {
          byte[] bsrc = _src.buffer;
          int src = _src.start;
          for(int i=0; i<len; i++) {
              int curr = (int)bsrc[src+i]&0xFF;
  
              if(curr < 0x20 || (0x7E < curr)) {
                  write(BACKSLASH, 1);
                  if(curr == 0) {
                      write(ZERO, 1);
                  } else {
                      write(X, 1);
                      write(hex_table.withStart((curr & 0xF0) >> 4), 1);
                      write(hex_table.withStart(curr & 0x0F), 1);
                  }
              } else {
                  write(_src.withStart(src+i), 1);
                  if(curr == '\\') {
                      write(BACKSLASH, 1);
                  }
              }
          }
      }