all: fix spellings

This follows the spelling choices that the Go project has made for English words.
https://github.com/golang/go/wiki/Spelling

misc/cgo/test/issue6997_linux.go

@@ -5,7 +5,7 @@
 // +build !android
 
 // Test that pthread_cancel works as expected
-// (NPTL uses SIGRTMIN to implement thread cancelation)
+// (NPTL uses SIGRTMIN to implement thread cancellation)
 // See https://golang.org/issue/6997
 package cgotest
 
@@ -17,8 +17,10 @@ extern int CancelThread();
 */
 import "C"
 
-import "testing"
-import "time"
+import (
+	"testing"
+	"time"
+)
 
 func test6997(t *testing.T) {
 	r := C.StartThread()

src/cmd/vendor/github.com/google/pprof/third_party/d3/d3.go

@@ -3995,7 +3995,7 @@ function create(node, id, self) {
       }
 
       // Cancel any pre-empted transitions. No interrupt event is dispatched
-      // because the cancelled transitions never started. Note that this also
+      // because the canceled transitions never started. Note that this also
       // removes this transition from the pending list!
       else if (+i < id) {
         o.state = ENDED;

src/cmd/vendor/golang.org/x/tools/go/analysis/passes/lostcancel/lostcancel.go

@@ -22,8 +22,8 @@ const Doc = `check cancel func returned by context.WithCancel is called
 
 The cancellation function returned by context.WithCancel, WithTimeout,
 and WithDeadline must be called or the new context will remain live
-until its parent context is cancelled.
-(The background context is never cancelled.)`
+until its parent context is canceled.
+(The background context is never canceled.)`
 
 var Analyzer = &analysis.Analyzer{
 	Name: "lostcancel",

src/context/context_test.go

@@ -661,7 +661,7 @@ func XTestWithCancelCanceledParent(t testingT) {
 		t.Errorf("child not done immediately upon construction")
 	}
 	if got, want := c.Err(), Canceled; got != want {
-		t.Errorf("child not cancelled; got = %v, want = %v", got, want)
+		t.Errorf("child not canceled; got = %v, want = %v", got, want)
 	}
 }
 
@@ -779,7 +779,7 @@ func XTestCustomContextGoroutines(t testingT) {
 	defer cancel6()
 	checkNoGoroutine()
 
-	// Check applied to cancelled context.
+	// Check applied to canceled context.
 	cancel6()
 	cancel1()
 	_, cancel7 := WithCancel(ctx5)

src/crypto/tls/handshake_server_test.go

@@ -1989,7 +1989,7 @@ func TestServerHandshakeContextCancellation(t *testing.T) {
 // TestHandshakeContextHierarchy tests whether the contexts
 // available to GetClientCertificate and GetCertificate are
 // derived from the context provided to HandshakeContext, and
-// that those contexts are cancelled after HandshakeContext has
+// that those contexts are canceled after HandshakeContext has
 // returned.
 func TestHandshakeContextHierarchy(t *testing.T) {
 	c, s := localPipe(t)
@@ -2024,7 +2024,7 @@ func TestHandshakeContextHierarchy(t *testing.T) {
 		select {
 		case <-innerCtx.Done():
 		default:
-			t.Errorf("GetClientCertificate context was not cancelled after HandshakeContext returned.")
+			t.Errorf("GetClientCertificate context was not canceled after HandshakeContext returned.")
 		}
 	}()
 	var innerCtx context.Context
@@ -2048,7 +2048,7 @@ func TestHandshakeContextHierarchy(t *testing.T) {
 	select {
 	case <-innerCtx.Done():
 	default:
-		t.Errorf("GetCertificate context was not cancelled after HandshakeContext returned.")
+		t.Errorf("GetCertificate context was not canceled after HandshakeContext returned.")
 	}
 	if err := <-clientErr; err != nil {
 		t.Errorf("Unexpected client error: %v", err)

src/database/sql/sql.go

@@ -1795,7 +1795,7 @@ func (db *DB) beginDC(ctx context.Context, dc *driverConn, release func(error),
 		return nil, err
 	}
 
-	// Schedule the transaction to rollback when the context is cancelled.
+	// Schedule the transaction to rollback when the context is canceled.
 	// The cancel function in Tx will be called after done is set to true.
 	ctx, cancel := context.WithCancel(ctx)
 	tx = &Tx{

src/database/sql/sql_test.go

@@ -656,7 +656,7 @@ func TestPoolExhaustOnCancel(t *testing.T) {
 	db.SetMaxOpenConns(max)
 
 	// First saturate the connection pool.
-	// Then start new requests for a connection that is cancelled after it is requested.
+	// Then start new requests for a connection that is canceled after it is requested.
 
 	state = 1
 	for i := 0; i < max; i++ {
@@ -2784,7 +2784,7 @@ func TestTxCannotCommitAfterRollback(t *testing.T) {
 	// 3. Check if 2.A has committed in Tx (pass) or outside of Tx (fail).
 	sendQuery := make(chan struct{})
 	// The Tx status is returned through the row results, ensure
-	// that the rows results are not cancelled.
+	// that the rows results are not canceled.
 	bypassRowsAwaitDone = true
 	hookTxGrabConn = func() {
 		cancel()

src/net/http/client_test.go

@@ -1945,7 +1945,7 @@ func TestClientDoCanceledVsTimeout_h2(t *testing.T) {
 }
 
 // Issue 33545: lock-in the behavior promised by Client.Do's
-// docs about request cancelation vs timing out.
+// docs about request cancellation vs timing out.
 func testClientDoCanceledVsTimeout(t *testing.T, h2 bool) {
 	defer afterTest(t)
 	cst := newClientServerTest(t, h2, HandlerFunc(func(w ResponseWriter, r *Request) {

src/net/http/h2_bundle.go

@@ -7359,7 +7359,7 @@ func (cc *http2ClientConn) Shutdown(ctx context.Context) error {
 	}
 	// Wait for all in-flight streams to complete or connection to close
 	done := make(chan error, 1)
-	cancelled := false // guarded by cc.mu
+	canceled := false // guarded by cc.mu
 	go func() {
 		cc.mu.Lock()
 		defer cc.mu.Unlock()
@@ -7369,7 +7369,7 @@ func (cc *http2ClientConn) Shutdown(ctx context.Context) error {
 				done <- cc.tconn.Close()
 				break
 			}
-			if cancelled {
+			if canceled {
 				break
 			}
 			cc.cond.Wait()
@@ -7382,7 +7382,7 @@ func (cc *http2ClientConn) Shutdown(ctx context.Context) error {
 	case <-ctx.Done():
 		cc.mu.Lock()
 		// Free the goroutine above
-		cancelled = true
+		canceled = true
 		cc.cond.Broadcast()
 		cc.mu.Unlock()
 		return ctx.Err()

src/net/http/httputil/dump_test.go

@@ -478,7 +478,7 @@ func TestDumpResponse(t *testing.T) {
 	}
 }
 
-// Issue 38352: Check for deadlock on cancelled requests.
+// Issue 38352: Check for deadlock on canceled requests.
 func TestDumpRequestOutIssue38352(t *testing.T) {
 	if testing.Short() {
 		return

src/net/http/httputil/reverseproxy.go

@@ -562,7 +562,7 @@ func (p *ReverseProxy) handleUpgradeResponse(rw http.ResponseWriter, req *http.R
 
 	backConnCloseCh := make(chan bool)
 	go func() {
-		// Ensure that the cancelation of a request closes the backend.
+		// Ensure that the cancellation of a request closes the backend.
 		// See issue https://golang.org/issue/35559.
 		select {
 		case <-req.Context().Done():

src/net/http/pprof/pprof.go

@@ -287,7 +287,7 @@ func (name handler) serveDeltaProfile(w http.ResponseWriter, r *http.Request, p
 		err := r.Context().Err()
 		if err == context.DeadlineExceeded {
 			serveError(w, http.StatusRequestTimeout, err.Error())
-		} else { // TODO: what's a good status code for cancelled requests? 400?
+		} else { // TODO: what's a good status code for canceled requests? 400?
 			serveError(w, http.StatusInternalServerError, err.Error())
 		}
 		return

src/net/http/transport.go

@@ -1187,7 +1187,7 @@ type wantConn struct {
 
 	// hooks for testing to know when dials are done
 	// beforeDial is called in the getConn goroutine when the dial is queued.
-	// afterDial is called when the dial is completed or cancelled.
+	// afterDial is called when the dial is completed or canceled.
 	beforeDial func()
 	afterDial  func()
 
@@ -1375,7 +1375,7 @@ func (t *Transport) getConn(treq *transportRequest, cm connectMethod) (pc *persi
 			trace.GotConn(httptrace.GotConnInfo{Conn: w.pc.conn, Reused: w.pc.isReused()})
 		}
 		if w.err != nil {
-			// If the request has been cancelled, that's probably
+			// If the request has been canceled, that's probably
 			// what caused w.err; if so, prefer to return the
 			// cancellation error (see golang.org/issue/16049).
 			select {
@@ -1437,7 +1437,7 @@ func (t *Transport) queueForDial(w *wantConn) {
 
 // dialConnFor dials on behalf of w and delivers the result to w.
 // dialConnFor has received permission to dial w.cm and is counted in t.connCount[w.cm.key()].
-// If the dial is cancelled or unsuccessful, dialConnFor decrements t.connCount[w.cm.key()].
+// If the dial is canceled or unsuccessful, dialConnFor decrements t.connCount[w.cm.key()].
 func (t *Transport) dialConnFor(w *wantConn) {
 	defer w.afterDial()
 

src/vendor/golang.org/x/net/nettest/conntest.go

@@ -143,7 +143,7 @@ func testPingPong(t *testing.T, c1, c2 net.Conn) {
 }
 
 // testRacyRead tests that it is safe to mutate the input Read buffer
-// immediately after cancelation has occurred.
+// immediately after cancellation has occurred.
 func testRacyRead(t *testing.T, c1, c2 net.Conn) {
 	go chunkedCopy(c2, rand.New(rand.NewSource(0)))
 
@@ -171,7 +171,7 @@ func testRacyRead(t *testing.T, c1, c2 net.Conn) {
 }
 
 // testRacyWrite tests that it is safe to mutate the input Write buffer
-// immediately after cancelation has occurred.
+// immediately after cancellation has occurred.
 func testRacyWrite(t *testing.T, c1, c2 net.Conn) {
 	go chunkedCopy(ioutil.Discard, c2)
 
@@ -319,7 +319,7 @@ func testCloseTimeout(t *testing.T, c1, c2 net.Conn) {
 	defer wg.Wait()
 	wg.Add(3)
 
-	// Test for cancelation upon connection closure.
+	// Test for cancellation upon connection closure.
 	c1.SetDeadline(neverTimeout)
 	go func() {
 		defer wg.Done()