Handle more cases of typos misinterpreted as type ascription

2019-07-17 11:40:36 -07:00
parent a3369981de
commit f5b285906e
29 changed files with 227 additions and 114 deletions
--- a/src/libsyntax_ext/format.rs
+++ b/src/libsyntax_ext/format.rs
@@ -141,7 +141,10 @@ fn parse_args<'a>(

    while p.token != token::Eof {
        if !p.eat(&token::Comma) {
-            return Err(ecx.struct_span_err(p.token.span, "expected token: `,`"));
+            let mut err = ecx.struct_span_err(p.token.span, "expected token: `,`");
+            err.span_label(p.token.span, "expected `,`");
+            p.maybe_annotate_with_ascription(&mut err, false);
+            return Err(err);
        }
        if p.token == token::Eof {
            break;