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-rw-r--r--library/alloc/src/fmt.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/library/alloc/src/fmt.rs b/library/alloc/src/fmt.rs
index d0ba9c39886..82eaf7d8724 100644
--- a/library/alloc/src/fmt.rs
+++ b/library/alloc/src/fmt.rs
@@ -354,7 +354,7 @@
 //! sign := '+' | '-'
 //! width := count
 //! precision := count | '*'
-//! type := '?' | 'x?' | 'X?' | identifier
+//! type := '?' | 'x?' | 'X?' | 'o' | 'x' | 'X' | 'p' | 'b' | 'e' | 'E'
 //! count := parameter | integer
 //! parameter := argument '$'
 //! ```