Var_Parse
lhs = Var_Parse(condExpr, NULL, doEval,&varSpecLen,&doFree);
string = Var_Parse(rhs, NULL, doEval,&len,&freeIt);
val = Var_Parse(&condExpr[arglen - 1], NULL,
val = Var_Parse(str, ctxt, undefErr, &length, &doFree);
result = Var_Parse(str, ctxt, err, lengthPtr, &freeIt);
extern char *Var_Parse(const char *, SymTable *, bool, size_t *,