typos: fix a grabbag of typos all over the place

8 files changed, 11 insertions, 11 deletions

diff --git a/src/libcore/cell.rs b/src/libcore/cell.rs
index d37f5169af1..1b4af44da46 100644
--- a/src/libcore/cell.rs
+++ b/src/libcore/cell.rs
@@ -598,7 +598,7 @@ impl<'b, T: ?Sized> Ref<'b, T> {
         }
     }
 
-    /// Make a new `Ref` for a optional component of the borrowed data, e.g. an
+    /// Make a new `Ref` for an optional component of the borrowed data, e.g. an
     /// enum variant.
     ///
     /// The `RefCell` is already immutably borrowed, so this cannot fail.
@@ -668,7 +668,7 @@ impl<'b, T: ?Sized> RefMut<'b, T> {
         }
     }
 
-    /// Make a new `RefMut` for a optional component of the borrowed data, e.g.
+    /// Make a new `RefMut` for an optional component of the borrowed data, e.g.
     /// an enum variant.
     ///
     /// The `RefCell` is already mutably borrowed, so this cannot fail.
diff --git a/src/libcore/intrinsics.rs b/src/libcore/intrinsics.rs
index ece285a8313..08c017841e3 100644
--- a/src/libcore/intrinsics.rs
+++ b/src/libcore/intrinsics.rs
@@ -373,20 +373,20 @@ extern "rust-intrinsic" {
     /// a size of `count` * `size_of::<T>()` and an alignment of
     /// `min_align_of::<T>()`
     ///
-    /// The volatile parameter parameter is set to `true`, so it will not be optimized out.
+    /// The volatile parameter is set to `true`, so it will not be optimized out.
     pub fn volatile_copy_nonoverlapping_memory<T>(dst: *mut T, src: *const T,
                                                   count: usize);
     /// Equivalent to the appropriate `llvm.memmove.p0i8.0i8.*` intrinsic, with
     /// a size of `count` * `size_of::<T>()` and an alignment of
     /// `min_align_of::<T>()`
     ///
-    /// The volatile parameter parameter is set to `true`, so it will not be optimized out.
+    /// The volatile parameter is set to `true`, so it will not be optimized out.
     pub fn volatile_copy_memory<T>(dst: *mut T, src: *const T, count: usize);
     /// Equivalent to the appropriate `llvm.memset.p0i8.*` intrinsic, with a
     /// size of `count` * `size_of::<T>()` and an alignment of
     /// `min_align_of::<T>()`.
     ///
-    /// The volatile parameter parameter is set to `true`, so it will not be optimized out.
+    /// The volatile parameter is set to `true`, so it will not be optimized out.
     pub fn volatile_set_memory<T>(dst: *mut T, val: u8, count: usize);
 
     /// Perform a volatile load from the `src` pointer.
diff --git a/src/libcore/marker.rs b/src/libcore/marker.rs
index 35dde63e52b..bf95ce86850 100644
--- a/src/libcore/marker.rs
+++ b/src/libcore/marker.rs
@@ -381,7 +381,7 @@ mod impls {
 /// ```
 ///
 /// Without the declaration `T:Reflect`, `foo` would not type check
-/// (note: as a matter of style, it would be preferable to to write
+/// (note: as a matter of style, it would be preferable to write
 /// `T:Any`, because `T:Any` implies `T:Reflect` and `T:'static`, but
 /// we use `Reflect` here to show how it works). The `Reflect` bound
 /// thus serves to alert `foo`'s caller to the fact that `foo` may
diff --git a/src/libcore/num/bignum.rs b/src/libcore/num/bignum.rs
index baeca6b8b49..18b34e24fcb 100644
--- a/src/libcore/num/bignum.rs
+++ b/src/libcore/num/bignum.rs
@@ -110,7 +110,7 @@ macro_rules! define_bignum {
     ($name:ident: type=$ty:ty, n=$n:expr) => (
         /// Stack-allocated arbitrary-precision (up to certain limit) integer.
         ///
-        /// This is backed by an fixed-size array of given type ("digit").
+        /// This is backed by a fixed-size array of given type ("digit").
         /// While the array is not very large (normally some hundred bytes),
         /// copying it recklessly may result in the performance hit.
         /// Thus this is intentionally not `Copy`.
diff --git a/src/libcore/num/flt2dec/mod.rs b/src/libcore/num/flt2dec/mod.rs
index 7f7c61938cb..57d4bccbfa6 100644
--- a/src/libcore/num/flt2dec/mod.rs
+++ b/src/libcore/num/flt2dec/mod.rs
@@ -461,7 +461,7 @@ pub fn to_shortest_str<'a, T, F>(mut format_shortest: F, v: T,
 /// You probably would want `strategy::grisu::format_shortest` for this.
 ///
 /// The `dec_bounds` is a tuple `(lo, hi)` such that the number is formatted
-/// as decimal only when `10^lo <= V < 10^hi`. Note that this is the *apparant* `V`
+/// as decimal only when `10^lo <= V < 10^hi`. Note that this is the *apparent* `V`
 /// instead of the actual `v`! Thus any printed exponent in the exponential form
 /// cannot be in this range, avoiding any confusion.
 ///
diff --git a/src/libcore/num/flt2dec/strategy/grisu.rs b/src/libcore/num/flt2dec/strategy/grisu.rs
index 5b4b2e46478..13e01d9a7f7 100644
--- a/src/libcore/num/flt2dec/strategy/grisu.rs
+++ b/src/libcore/num/flt2dec/strategy/grisu.rs
@@ -488,7 +488,7 @@ pub fn format_exact_opt(d: &Decoded, buf: &mut [u8], limit: i16)
         // but scaling `max_ten_kappa << e` by 10 can result in overflow.
         // thus we are being sloppy here and widen the error range by a factor of 10.
         // this will increase the false negative rate, but only very, *very* slightly;
-        // it can only matter noticably when the mantissa is bigger than 60 bits.
+        // it can only matter noticeably when the mantissa is bigger than 60 bits.
         return possibly_round(buf, 0, exp, limit, v.f / 10, (max_ten_kappa as u64) << e, err << e);
     } else if ((exp as i32 - limit as i32) as usize) < buf.len() {
         (exp - limit) as usize
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index e942e8b6923..edff03025c5 100644
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@@ -1383,7 +1383,7 @@ fn from_str_radix<T: FromStrRadixHelper>(src: &str, radix: u32)
 
     // all valid digits are ascii, so we will just iterate over the utf8 bytes
     // and cast them to chars. .to_digit() will safely return None for anything
-    // other than a valid ascii digit for a the given radix, including the first-byte
+    // other than a valid ascii digit for the given radix, including the first-byte
     // of multi-byte sequences
     let src = src.as_bytes();
 
diff --git a/src/libcore/str/mod.rs b/src/libcore/str/mod.rs
index 9f1439ea388..57daa95e8c4 100644
--- a/src/libcore/str/mod.rs
+++ b/src/libcore/str/mod.rs
@@ -562,7 +562,7 @@ macro_rules! derive_pattern_clone {
 }
 
 /// This macro generates two public iterator structs
-/// wrapping an private internal one that makes use of the `Pattern` API.
+/// wrapping a private internal one that makes use of the `Pattern` API.
 ///
 /// For all patterns `P: Pattern<'a>` the following items will be
 /// generated (generics omitted):