Can we remove parentheses around arguments in C macros definitions?

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Here’s a relatively dumb example, but it does have a different result:

#define Streq(s1, s2) (strcmp((s1), (s2)) == 0)
#define MyStreq(s1, s2) (strcmp(s1, s2) == 0)
#define s1 "foo", "blah"

int main() {
    Streq(s1, "blah"); // Compiles and compares equal.
    MyStreq(s1, "blah"); // Compiler error. Too many parameters.
}

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