From adcbd117da22567c81cb2937faacc42ec45a2750 Mon Sep 17 00:00:00 2001
From: Eric Huss <eric@huss.org>
Date: Sat, 25 Oct 2025 16:46:51 -0700
Subject: [PATCH] Fix error message for config.get deserialization error

The error message for a deserialization failure was missing a call to
`format!`.
---
 crates/mdbook-core/src/config.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/crates/mdbook-core/src/config.rs b/crates/mdbook-core/src/config.rs
index 301e5456..760af992 100644
--- a/crates/mdbook-core/src/config.rs
+++ b/crates/mdbook-core/src/config.rs
@@ -204,7 +204,7 @@ impl Config {
                 value
                     .clone()
                     .try_into()
-                    .with_context(|| "Failed to deserialize `{name}`")
+                    .with_context(|| format!("Failed to deserialize `{name}`"))
             })
             .transpose()
     }
@@ -1156,6 +1156,9 @@ mod tests {
         "#;
         let cfg = Config::from_str(src).unwrap();
         let err = cfg.get::<String>("preprocessor.foo.x").unwrap_err();
-        assert_eq!(err.to_string(), "Failed to deserialize `{name}`");
+        assert_eq!(
+            err.to_string(),
+            "Failed to deserialize `preprocessor.foo.x`"
+        );
     }
 }