Show remaining data in string::Drain's Debug impl.

m-ou-se · m-ou-se · commit 673284058b53 · 2020-09-09T17:50:55.000+02:00
diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs
@@ -2439,7 +2439,7 @@ pub struct Drain<'a> {
 #[stable(feature = "collection_debug", since = "1.17.0")]
 impl fmt::Debug for Drain<'_> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.pad("Drain { .. }")
+        f.debug_tuple("Drain").field(&self.as_str()).finish()
     }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -2439,7 +2439,7 @@ pub struct Drain<'a> {`
`2439`	`2439`	`#[stable(feature = "collection_debug", since = "1.17.0")]`
`2440`	`2440`	`impl fmt::Debug for Drain<'_> {`
`2441`	`2441`	`fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {`
`2442`		`- f.pad("Drain { .. }")`
	`2442`	`+ f.debug_tuple("Drain").field(&self.as_str()).finish()`
`2443`	`2443`	`}`
`2444`	`2444`	`}`
`2445`	`2445`