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-rw-r--r--crates/hir_expand/src/builtin_macro.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/crates/hir_expand/src/builtin_macro.rs b/crates/hir_expand/src/builtin_macro.rs
index 6382521fb..80b60d59f 100644
--- a/crates/hir_expand/src/builtin_macro.rs
+++ b/crates/hir_expand/src/builtin_macro.rs
@@ -259,7 +259,8 @@ fn format_args_expand(
259 } 259 }
260 for arg in &mut args { 260 for arg in &mut args {
261 // Remove `key =`. 261 // Remove `key =`.
262 if matches!(arg.get(1), Some(tt::TokenTree::Leaf(tt::Leaf::Punct(p))) if p.char == '=') { 262 if matches!(arg.get(1), Some(tt::TokenTree::Leaf(tt::Leaf::Punct(p))) if p.char == '=' && p.spacing != tt::Spacing::Joint)
263 {
263 arg.drain(..2); 264 arg.drain(..2);
264 } 265 }
265 } 266 }