Auto merge of #28758 - Manishearth:rollup, r=Manishearth

- Successful merges: #28743, #28744, #28745, #28749
- Failed merges: 

2 files changed, 2 insertions, 3 deletions

diff --git a/src/libstd/path.rs b/src/libstd/path.rs
index 8eb5d1f2726..43c2766782e 100644
--- a/src/libstd/path.rs
+++ b/src/libstd/path.rs
@@ -351,7 +351,6 @@ impl<'a> Prefix<'a> {
 /// ```
 #[stable(feature = "rust1", since = "1.0.0")]
 pub fn is_separator(c: char) -> bool {
-    use ascii::*;
     c.is_ascii() && is_sep_byte(c as u8)
 }
 
@@ -1292,7 +1291,7 @@ impl Path {
     /// use std::path::Path;
     ///
     /// let path_str = Path::new("foo.txt").to_str();
-    //// assert_eq!(path_str, Some("foo.txt"));
+    /// assert_eq!(path_str, Some("foo.txt"));
     /// ```
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn to_str(&self) -> Option<&str> {
diff --git a/src/libstd/primitive_docs.rs b/src/libstd/primitive_docs.rs
index f2ae168e560..7d62d477a0a 100644
--- a/src/libstd/primitive_docs.rs
+++ b/src/libstd/primitive_docs.rs
@@ -411,7 +411,7 @@ mod prim_isize { }
 
 #[doc(primitive = "usize")]
 //
-/// The pointer-sized signed integer type.
+/// The pointer-sized unsigned integer type.
 ///
 /// *[See also the `std::usize` module](usize/index.html).*
 ///