[gardening] Fix recently introduced typos.

Author: practicalswift

include/swift/Basic/TopCollection.h

@@ -150,7 +150,7 @@ class TopCollection {
     // drop values with that score.
     //
     // Note that all of the values between EndOfAccepted and MaxSize
-    // should have the same score, beause otherwise there's a tier we
+    // should have the same score, because otherwise there's a tier we
     // shouldn't have marked dead.
 
     // Just overwrite the next element instead of inserting if possible.

lib/Parse/ParseDecl.cpp

@@ -4468,7 +4468,7 @@ Parser::parseDeclFunc(SourceLoc StaticLoc, StaticSpellingKind StaticSpelling,
 
       SourceRange DoubleIdentifierRange(NameLoc, Tok.getLoc());
 
-      // Provide two fix-its: a direct concatentation of the two identifiers
+      // Provide two fix-its: a direct concatenation of the two identifiers
       // and a camel-cased version.
 
       auto DirectConcatenation = NameTok.getText().str() + Tok.getText().str();

stdlib/public/core/Collection.swift

@@ -632,7 +632,7 @@ public protocol Collection : Indexable, Sequence {
   /// The indices that are valid for subscripting the collection, in ascending
   /// order.
   ///
-  /// A collections's `indices` property can hold a strong reference to the
+  /// A collection's `indices` property can hold a strong reference to the
   /// collection itself, causing the collection to be non-uniquely referenced.
   /// If you mutate the collection while iterating over its indices, a strong
   /// reference can cause an unexpected copy of the collection. To avoid the

stdlib/public/core/Indices.swift.gyb

@@ -109,7 +109,7 @@ extension ${collectionForTraversal(Traversal)} where Indices == ${Self}<Self> {
   /// The indices that are valid for subscripting the collection, in ascending
   /// order.
   ///
-  /// A collections's `indices` property can hold a strong reference to the
+  /// A collection's `indices` property can hold a strong reference to the
   /// collection itself, causing the collection to be non-uniquely referenced.
   /// If you mutate the collection while iterating over its indices, a strong
   /// reference can cause an unexpected copy of the collection. To avoid the

stdlib/public/core/RandomAccessCollection.swift

@@ -160,7 +160,7 @@ where Index : Strideable,
   /// The indices that are valid for subscripting the collection, in ascending
   /// order.
   ///
-  /// A collections's `indices` property can hold a strong reference to the
+  /// A collection's `indices` property can hold a strong reference to the
   /// collection itself, causing the collection to be non-uniquely referenced.
   /// If you mutate the collection while iterating over its indices, a strong
   /// reference can cause an unexpected copy of the collection. To avoid the

stdlib/public/core/RangeReplaceableCollection.swift.gyb

@@ -20,7 +20,7 @@
 /// the elements of another collection.
 ///
 /// In most cases, it's best to ignore this protocol and use the
-/// `RangeRepleaceableCollection` protocol instead, because it has a more
+/// `RangeReplaceableCollection` protocol instead, because it has a more
 /// complete interface.
 public protocol RangeReplaceableIndexable : Indexable {
   // FIXME(ABI)(compiler limitation): there is no reason for this protocol

test/expr/unary/keypath/keypath.swift

@@ -78,7 +78,7 @@ func testKeyPath(a: A, b: B) {
   let _: String = #keyPath(A.propNSDict.anyKeyName)
   let _: String = #keyPath(A.propNSDict.anyKeyName.propA)
 
-  // NSSet property (AnyObject set elemtn).
+  // NSSet property (AnyObject set element).
   let _: String = #keyPath(A.propNSSet)
   let _: String = #keyPath(A.propNSSet.URLsInText)
 

utils/build-script

@@ -93,7 +93,7 @@ def argparse_executable(string):
     if os.access(string, os.X_OK):
         return os.path.abspath(string)
     raise argparse.ArgumentTypeError(
-        "%r is not execuable" % string)
+        "%r is not executable" % string)
 
 
 # Main entry point for the preset mode.

utils/swift_build_support/tests/test_xcrun.py

@@ -15,15 +15,15 @@
 
 
 @unittest.skipUnless(platform.system() == 'Darwin',
-                     'xcrun is avaiable in Darwin platform only')
+                     'xcrun is available in Darwin platform only')
 class XCRunTestCase(unittest.TestCase):
     def test_find(self):
         # Unknown tool
         self.assertIsNone(xcrun.find('a-tool-that-isnt-on-osx',
                                      sdk='macosx',
                                      toolchain='default'))
 
-        # Avaiable tool
+        # Available tool
         self.assertTrue(xcrun.find('clang',
                                    sdk='macosx',
                                    toolchain='default').endswith('/clang'))