EQUAL_CHAR
if (*equal_s == EQUAL_CHAR)
(c) == EQUAL_CHAR || \
case EQUAL_CHAR:
if (s_begin == s_end || *s_begin != EQUAL_CHAR) {
} else if (*s == EQUAL_CHAR || *s == COMMA_CHAR ||
if (*s == EQUAL_CHAR)
else if (*s == EQUAL_CHAR || *s == CLOSE_PAREN_CHAR ||
match = c == EQUAL_CHAR;
else if (*s == EQUAL_CHAR) {