chore: handle write! errors

Sponsored-by: author

2 files changed, 5 insertions, 1 deletions

diff --git a/src/bindings.rs b/src/bindings.rs
index b596c84..8c33cc4 100644
--- a/src/bindings.rs
+++ b/src/bindings.rs
@@ -853,7 +853,7 @@ fn regex_from_simple_pattern(
             }
         };
 
-        write!(r, r"(?P<{}>{})", name, kind.regex_str()).unwrap();
+        write!(r, r"(?P<{}>{})", name, kind.regex_str()).map_err(SubplotError::StringFormat)?;
         end = m.end();
     }
     let after = &pattern[end..];
diff --git a/src/error.rs b/src/error.rs
index a42298d..8236faf 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -309,6 +309,10 @@ pub enum SubplotError {
     /// UTF8 conversion error.
     #[error(transparent)]
     Utf8Error(#[from] std::str::Utf8Error),
+
+    /// String formatting failed.
+    #[error("Failed in string formattiing: {0}")]
+    StringFormat(std::fmt::Error),
 }
 
 impl SubplotError {