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Diffstat (limited to 'crates/mbe/src/expander/transcriber.rs')
| -rw-r--r-- | crates/mbe/src/expander/transcriber.rs | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/crates/mbe/src/expander/transcriber.rs b/crates/mbe/src/expander/transcriber.rs index 8140f25b06..0db17fea6e 100644 --- a/crates/mbe/src/expander/transcriber.rs +++ b/crates/mbe/src/expander/transcriber.rs @@ -238,7 +238,16 @@ fn expand_repeat( fn push_fragment(buf: &mut Vec<tt::TokenTree>, fragment: Fragment) { match fragment { Fragment::Tokens(tt::TokenTree::Subtree(tt)) => push_subtree(buf, tt), - Fragment::Tokens(tt) | Fragment::Ast(tt) => buf.push(tt), + Fragment::Expr(tt::TokenTree::Subtree(mut tt)) => { + if tt.delimiter.is_none() { + tt.delimiter = Some(tt::Delimiter { + id: tt::TokenId::unspecified(), + kind: tt::DelimiterKind::Parenthesis, + }) + } + buf.push(tt.into()) + } + Fragment::Tokens(tt) | Fragment::Expr(tt) => buf.push(tt), } } |