diff options
| -rw-r--r-- | src/libsyntax/ext/tt/macro_parser.rs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/libsyntax/ext/tt/macro_parser.rs b/src/libsyntax/ext/tt/macro_parser.rs index 0db6bd59afc..92ce3779a3c 100644 --- a/src/libsyntax/ext/tt/macro_parser.rs +++ b/src/libsyntax/ext/tt/macro_parser.rs @@ -825,7 +825,9 @@ fn may_begin_with(token: &Token, name: Name) -> bool { } match name { - sym::expr => token.can_begin_expr() && !token.is_keyword(kw::Let), + sym::expr => token.can_begin_expr() + // This exception is here for backwards compatibility. + && !token.is_keyword(kw::Let), sym::ty => token.can_begin_type(), sym::ident => get_macro_name(token).is_some(), sym::literal => token.can_begin_literal_or_bool(), |