kernel_cmdline: impl Display for utf8::Cmdline

jeckersb · jeckersb · commit 1cf09f39dff1 · 2025-09-12T17:15:20.000-04:00
We already impl AsRef&lt;str&gt; but this just makes it more convenient to
render the command line for users.

Signed-off-by: John Eckersberg &lt;jeckersb@redhat.com&gt;
diff --git a/crates/kernel_cmdline/src/utf8.rs b/crates/kernel_cmdline/src/utf8.rs
@@ -134,6 +134,13 @@ impl<'a> AsRef<str> for Cmdline<'a> {
     }
 }
 
+impl<'a> std::fmt::Display for Cmdline<'a> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
+        let as_str: &str = self.as_ref();
+        write!(f, "{as_str}")
+    }
+}
+
 /// A single kernel command line parameter key
 ///
 /// Handles quoted values and treats dashes and underscores in keys as equivalent.

Original file line number	Diff line number	Diff line change
`@@ -134,6 +134,13 @@ impl<'a> AsRef<str> for Cmdline<'a> {`
`134`	`134`	`}`
`135`	`135`	`}`
`136`	`136`
	`137`	`+impl<'a> std::fmt::Display for Cmdline<'a> {`
	`138`	`+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {`
	`139`	`+ let as_str: &str = self.as_ref();`
	`140`	`+ write!(f, "{as_str}")`
	`141`	`+ }`
	`142`	`+}`
	`143`	`+`
`137`	`144`	`/// A single kernel command line parameter key`
`138`	`145`	`///`
`139`	`146`	`/// Handles quoted values and treats dashes and underscores in keys as equivalent.`