rem: if ((p=getenv("HOME"))) {
add: if ((p=getenv("HOME")) && strlen(p) < (MAXPATHLEN-12)) {
context: void add_cvs_excludes(void){  char fname[MAXPATHLEN];  char *p;  int i;    for (i=0; cvs_ignore_list[i]; i++)    add_exclude(cvs_ignore_list[i]);  if ((p=getenv("HOME"))) {    sprintf(fname,"%s/.cvsignore",p);    add_exclude_file(fname,0);  }  if ((p=getenv("CVSIGNORE"))) {    char *tok;    for (tok=strtok(p," "); tok; tok=strtok(NULL," "))      add_exclude(tok);  }}