diff --git a/src/libcore/option.rs b/src/libcore/option.rs
index c5203c5111b..9ccba7ad78d 100644
--- a/src/libcore/option.rs
+++ b/src/libcore/option.rs
@@ -46,7 +46,7 @@
 //!     // The division was valid
 //!     Some(x) => println!("Result: {}", x),
 //!     // The division was invalid
-//!     None    => println!("Cannot divide by 0")
+//!     None    => println!("Cannot divide by 0"),
 //! }
 //! ```
 //!
@@ -75,7 +75,7 @@
 //! fn check_optional(optional: &Option<Box<i32>>) {
 //!     match *optional {
 //!         Some(ref p) => println!("have value {}", p),
-//!         None => println!("have no value")
+//!         None => println!("have no value"),
 //!     }
 //! }
 //! ```
@@ -95,13 +95,13 @@
 //! // Take a reference to the contained string
 //! match msg {
 //!     Some(ref m) => println!("{}", *m),
-//!     None => ()
+//!     None => (),
 //! }
 //!
 //! // Remove the contained string, destroying the Option
 //! let unwrapped_msg = match msg {
 //!     Some(m) => m,
-//!     None => "default message"
+//!     None => "default message",
 //! };
 //! ```
 //!
@@ -137,7 +137,7 @@
 //!
 //! match name_of_biggest_animal {
 //!     Some(name) => println!("the biggest animal is {}", name),
-//!     None => println!("there are no animals :(")
+//!     None => println!("there are no animals :("),
 //! }
 //! ```
 
@@ -198,7 +198,7 @@ impl<T> Option<T> {
     pub fn is_some(&self) -> bool {
         match *self {
             Some(_) => true,
-            None => false
+            None => false,
         }
     }
 
@@ -244,7 +244,7 @@ impl<T> Option<T> {
     pub fn as_ref<'r>(&'r self) -> Option<&'r T> {
         match *self {
             Some(ref x) => Some(x),
-            None => None
+            None => None,
         }
     }
 
@@ -265,7 +265,7 @@ impl<T> Option<T> {
     pub fn as_mut<'r>(&'r mut self) -> Option<&'r mut T> {
         match *self {
             Some(ref mut x) => Some(x),
-            None => None
+            None => None,
         }
     }
 
@@ -376,7 +376,7 @@ impl<T> Option<T> {
     pub fn unwrap_or(self, def: T) -> T {
         match self {
             Some(x) => x,
-            None => def
+            None => def,
         }
     }
 
@@ -394,7 +394,7 @@ impl<T> Option<T> {
     pub fn unwrap_or_else<F: FnOnce() -> T>(self, f: F) -> T {
         match self {
             Some(x) => x,
-            None => f()
+            None => f(),
         }
     }
 
@@ -420,7 +420,7 @@ impl<T> Option<T> {
     pub fn map<U, F: FnOnce(T) -> U>(self, f: F) -> Option<U> {
         match self {
             Some(x) => Some(f(x)),
-            None => None
+            None => None,
         }
     }
 
@@ -464,7 +464,7 @@ impl<T> Option<T> {
     pub fn map_or_else<U, D: FnOnce() -> U, F: FnOnce(T) -> U>(self, default: D, f: F) -> U {
         match self {
             Some(t) => f(t),
-            None => default()
+            None => default(),
         }
     }
 
@@ -637,7 +637,7 @@ impl<T> Option<T> {
     pub fn or(self, optb: Option<T>) -> Option<T> {
         match self {
             Some(_) => self,
-            None => optb
+            None => optb,
         }
     }
 
@@ -659,7 +659,7 @@ impl<T> Option<T> {
     pub fn or_else<F: FnOnce() -> Option<T>>(self, f: F) -> Option<T> {
         match self {
             Some(_) => self,
-            None => f()
+            None => f(),
         }
     }
 
@@ -736,7 +736,7 @@ impl<T: Default> Option<T> {
     pub fn unwrap_or_default(self) -> T {
         match self {
             Some(x) => x,
-            None => Default::default()
+            None => Default::default(),
         }
     }
 }
diff --git a/src/librustc/diagnostics.rs b/src/librustc/diagnostics.rs
index 3dbc80d352d..9aa5daa3a0a 100644
--- a/src/librustc/diagnostics.rs
+++ b/src/librustc/diagnostics.rs
@@ -791,8 +791,7 @@ trait Foo {
     fn bar(&self);
 }
 
-// we now declare a function which takes an object with Foo trait implemented
-// as parameter
+// we now declare a function which takes an object implementing the Foo trait
 fn some_func<T: Foo>(foo: T) {
     foo.bar();
 }
@@ -1006,7 +1005,7 @@ a compile-time constant.
 
 E0308: r##"
 This error occurs when the compiler was unable to infer the concrete type of a
-variable. This error can occur for several cases, the most common of which is a
+variable. It can occur for several cases, the most common of which is a
 mismatch in the expected type that the compiler inferred for a variable's
 initializing expression, and the actual type explicitly assigned to the
 variable.
diff --git a/src/librustdoc/html/static/main.js b/src/librustdoc/html/static/main.js
index 4a033452774..c77cdd4d021 100644
--- a/src/librustdoc/html/static/main.js
+++ b/src/librustdoc/html/static/main.js
@@ -76,62 +76,65 @@
     highlightSourceLines(null);
     $(window).on('hashchange', highlightSourceLines);
 
-    // Helper function for Keyboard events,
-    // Get's the char from the keypress event
+    // Gets the human-readable string for the virtual-key code of the
+    // given KeyboardEvent, ev.
     //
-    // This method is used because e.wich === x is not
-    // compatible with non-english keyboard layouts
+    // This function is meant as a polyfill for KeyboardEvent#key,
+    // since it is not supported in Trident.  We also test for
+    // KeyboardEvent#keyCode because the handleShortcut handler is
+    // also registered for the keydown event, because Blink doesn't fire
+    // keypress on hitting the Escape key.
     //
-    // Note: event.type must be keypress !
-    function getChar(event) {
-      if (event.which == null) {
-        return String.fromCharCode(event.keyCode) // IE
-      } else if (event.which!=0 && event.charCode!=0) {
-        return String.fromCharCode(event.which)   // the rest
-      } else {
-        return null // special key
-      }
+    // So I guess you could say things are getting pretty interoperable.
+    function getVirtualKey(ev) {
+        if ("key" in ev && typeof ev.key != "undefined")
+            return ev.key;
+
+        var c = ev.charCode || ev.keyCode;
+        if (c == 27)
+            return "Escape";
+        return String.fromCharCode(c);
     }
 
-    $(document).on('keypress', function handleKeyboardShortcut(e) {
-        if (document.activeElement.tagName === 'INPUT') {
+    function handleShortcut(ev) {
+        if (document.activeElement.tagName == "INPUT")
             return;
-        }
 
-        if (getChar(e) === '?') {
-            if (e.shiftKey && $('#help').hasClass('hidden')) {
-                e.preventDefault();
-                $('#help').removeClass('hidden');
+        switch (getVirtualKey(ev)) {
+        case "Escape":
+            if (!$("#help").hasClass("hidden")) {
+                ev.preventDefault();
+                $("#help").addClass("hidden");
+            } else if (!$("#search").hasClass("hidden")) {
+                ev.preventDefault();
+                $("#search").addClass("hidden");
+                $("#main").removeClass("hidden");
             }
-        } else if (getChar(e) === 's' || getChar(e) === 'S') {
-            e.preventDefault();
-            $('.search-input').focus();
-        }
-    }).on('keydown', function(e) {
-        // The escape key event has to be captured with the keydown event.
-        // Because keypressed has no keycode for the escape key
-        // (and other special keys in general)...
-        if (document.activeElement.tagName === 'INPUT') {
-            return;
-        }
+            break;
 
-        if (e.keyCode === 27) { // escape key
-            if (!$('#help').hasClass('hidden')) {
-                e.preventDefault();
-                $('#help').addClass('hidden');
-            } else if (!$('#search').hasClass('hidden')) {
-                e.preventDefault();
-                $('#search').addClass('hidden');
-                $('#main').removeClass('hidden');
+        case "s":
+        case "S":
+            ev.preventDefault();
+            $(".search-input").focus();
+            break;
+
+        case "?":
+            if (ev.shiftKey && $("#help").hasClass("hidden")) {
+                ev.preventDefault();
+                $("#help").removeClass("hidden");
             }
+            break;
         }
-    }).on('click', function(e) {
-        if (!$(e.target).closest('#help').length) {
-            $('#help').addClass('hidden');
+    }
+
+    $(document).on("keypress", handleShortcut);
+    $(document).on("keydown", handleShortcut);
+    $(document).on("click", function(ev) {
+        if (!$(ev.target).closest("#help").length) {
+            $("#help").addClass("hidden");
         }
     });
 
-
     $('.version-selector').on('change', function() {
         var i, match,
             url = document.location.href,
@@ -150,6 +153,7 @@
 
         document.location.href = url;
     });
+
     /**
      * A function to compute the Levenshtein distance between two strings
      * Licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported
diff --git a/src/librustdoc/html/static/playpen.js b/src/librustdoc/html/static/playpen.js
index b7a5f202629..ef8bdf5e2ce 100644
--- a/src/librustdoc/html/static/playpen.js
+++ b/src/librustdoc/html/static/playpen.js
@@ -17,7 +17,7 @@ document.addEventListener('DOMContentLoaded', function() {
     }
 
     var featureRegexp = new RegExp('^\s*#!\\[feature\\(\.*?\\)\\]');
-    var elements = document.querySelectorAll('pre.rust');
+    var elements = document.querySelectorAll('pre.rust-example-rendered');
 
     Array.prototype.forEach.call(elements, function(el) {
         el.onmouseover = function(e) {
diff --git a/src/libstd/io/prelude.rs b/src/libstd/io/prelude.rs
index 880770eb414..db5c1da8a42 100644
--- a/src/libstd/io/prelude.rs
+++ b/src/libstd/io/prelude.rs
@@ -17,10 +17,6 @@
 //! # #![allow(unused_imports)]
 //! use std::io::prelude::*;
 //! ```
-//!
-//! This module contains reexports of many core I/O traits such as `Read`,
-//! `Write` and `BufRead`. Structures and functions are not
-//! contained in this module.
 
 #![stable(feature = "rust1", since = "1.0.0")]