in include/S_Expression.h [838:850]
inline void s_expr_istream::skip_white_spaces() {
for (;;) {
char c = m_input.peek();
if (m_input.good() && std::isspace(c)) {
if (c == '\n') {
++m_line_number;
}
m_input.get();
} else {
return;
}
}
}