diff --git a/crates/toml_edit/src/encode.rs b/crates/toml_edit/src/encode.rs
index 1da651aa..fd5eeec0 100644
--- a/crates/toml_edit/src/encode.rs
+++ b/crates/toml_edit/src/encode.rs
@@ -419,13 +419,17 @@ fn infer_style(
         (Some(style), Some(literal)) => (style, literal),
         (None, Some(literal)) => (infer_all_style(value).0, literal),
         (Some(style), None) => {
-            let literal = !value.contains('\'') && (value.contains('"') | value.contains('\\'));
+            let literal = infer_literal(value);
             (style, literal)
         }
         (None, None) => infer_all_style(value),
     }
 }
 
+fn infer_literal(value: &str) -> bool {
+    !value.contains('\'') && (value.contains('"') | value.contains('\\'))
+}
+
 fn infer_all_style(value: &str) -> (StringStyle, bool) {
     // We need to determine:
     // - if we are a "multi-line" pretty (if there are \n)