ISO_FILENAME_MAXLENGTH_BEFORE_VERSION
while (p1 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION-1
&& p2 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION-1) {
while (p1 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION - 1
&& p2 < ISO_FILENAME_MAXLENGTH_BEFORE_VERSION - 1) {
maxlength = ISO_FILENAME_MAXLENGTH_BEFORE_VERSION;