1 error: `count` followed by a comma must have an associated index indicating its depth
2 --> $DIR/issue-111904.rs:4:37
4 LL | ( $( $($t:ident),* );* ) => { ${count(t,)} }
7 error: expected expression, found `$`
8 --> $DIR/issue-111904.rs:4:35
10 LL | ( $( $($t:ident),* );* ) => { ${count(t,)} }
11 | ^ expected expression
13 LL | foo!(a, a; b, b);
14 | ---------------- in this macro invocation
16 = note: this error originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
18 error: aborting due to 2 previous errors