Make punct_len just give give up harder on bad input
@@ -47,7 +47,7 @@ macro_rules! punct_len {
(-) => ( 1usize );
(-=) => ( 2usize );
(~) => ( 1usize );
- ($tt:tt) => ( my_compile_error!("Punctuation `{}` is not supported", stringify!($tt)) );
+ ($tt:tt) => ( my_compile_error!("This punctuation is not supported") );
($head:tt $($tail:tt)+) => ( punct_len!($head) $(+ punct_len!($tail))+ );
}
