D_EDIT
diff_format = D_EDIT;
case D_EDIT:
if (i != 0 && diff_format == D_EDIT) {
if ((diff_format == D_EDIT || diff_format == D_REVERSE) && c <= d)
if (diff_format == D_EDIT || diff_format == D_REVERSE ||
if (diff_format == D_EDIT && j == 1 && c == '\n'
if (diff_format != D_EDIT) {