std lib: fix various typos in comments Where the spelling changed from British to US norm (e.g., optimise -> optimize) it follows the style in that file. LGTM=adonovan R=golang-codereviews, adonovan CC=golang-codereviews https://golang.org/cl/96980043

diff --git a/src/pkg/container/heap/heap.go b/src/pkg/container/heap/heap.go
index 3fe2327..c467a11 100644
--- a/src/pkg/container/heap/heap.go
+++ b/src/pkg/container/heap/heap.go

@@ -78,7 +78,7 @@
 	return h.Pop()
 }
 
-// Fix reestablishes the heap ordering after the element at index i has changed its value.
+// Fix re-establishes the heap ordering after the element at index i has changed its value.
 // Changing the value of the element at index i and then calling Fix is equivalent to,
 // but less expensive than, calling Remove(h, i) followed by a Push of the new value.
 // The complexity is O(log(n)) where n = h.Len().

diff --git a/src/pkg/crypto/tls/key_agreement.go b/src/pkg/crypto/tls/key_agreement.go
index 94bb5e9..f38b701 100644
--- a/src/pkg/crypto/tls/key_agreement.go
+++ b/src/pkg/crypto/tls/key_agreement.go

@@ -141,7 +141,7 @@
 
 // pickTLS12HashForSignature returns a TLS 1.2 hash identifier for signing a
 // ServerKeyExchange given the signature type being used and the client's
-// advertized list of supported signature and hash combinations.
+// advertised list of supported signature and hash combinations.
 func pickTLS12HashForSignature(sigType uint8, clientSignatureAndHashes []signatureAndHash) (uint8, error) {
 	if len(clientSignatureAndHashes) == 0 {
 		// If the client didn't specify any signature_algorithms

diff --git a/src/pkg/math/big/rat.go b/src/pkg/math/big/rat.go
index 0fd19c6..f0973b3 100644
--- a/src/pkg/math/big/rat.go
+++ b/src/pkg/math/big/rat.go

@@ -47,7 +47,7 @@
 
 	shift := 52 - exp
 
-	// Optimisation (?): partially pre-normalise.
+	// Optimization (?): partially pre-normalise.
 	for mantissa&1 == 0 && shift > 0 {
 		mantissa >>= 1
 		shift--

diff --git a/src/pkg/math/cmplx/pow.go b/src/pkg/math/cmplx/pow.go
index 81821a3..1630b87 100644
--- a/src/pkg/math/cmplx/pow.go
+++ b/src/pkg/math/cmplx/pow.go

@@ -43,7 +43,7 @@
 //    IEEE      -10,+10     30000       9.4e-15     1.5e-15
 
 // Pow returns x**y, the base-x exponential of y.
-// For generalized compatiblity with math.Pow:
+// For generalized compatibility with math.Pow:
 //	Pow(0, ±0) returns 1+0i
 //	Pow(0, c) for real(c)<0 returns Inf+0i if imag(c) is zero, otherwise Inf+Inf i.
 func Pow(x, y complex128) complex128 {

diff --git a/src/pkg/net/http/fs.go b/src/pkg/net/http/fs.go
index 9df5cc4..8576cf8 100644
--- a/src/pkg/net/http/fs.go
+++ b/src/pkg/net/http/fs.go

@@ -527,7 +527,7 @@
 	return len(p), nil
 }
 
-// rangesMIMESize returns the nunber of bytes it takes to encode the
+// rangesMIMESize returns the number of bytes it takes to encode the
 // provided ranges as a multipart response.
 func rangesMIMESize(ranges []httpRange, contentType string, contentSize int64) (encSize int64) {
 	var w countingWriter

diff --git a/src/pkg/net/ipsock.go b/src/pkg/net/ipsock.go
index 8b586ef..dda8578 100644
--- a/src/pkg/net/ipsock.go
+++ b/src/pkg/net/ipsock.go

@@ -16,7 +16,7 @@
 	// networking functionality.
 	supportsIPv4 bool
 
-	// supportsIPv6 reports whether the platfrom supports IPv6
+	// supportsIPv6 reports whether the platform supports IPv6
 	// networking functionality.
 	supportsIPv6 bool
 
@@ -207,7 +207,7 @@
 }
 
 func splitHostZone(s string) (host, zone string) {
-	// The IPv6 scoped addressing zone identifer starts after the
+	// The IPv6 scoped addressing zone identifier starts after the
 	// last percent sign.
 	if i := last(s, '%'); i > 0 {
 		host, zone = s[:i], s[i+1:]
@@ -232,7 +232,7 @@
 // address or a DNS name and returns an internet protocol family
 // address. It returns a list that contains a pair of different
 // address family addresses when addr is a DNS name and the name has
-// mutiple address family records. The result contains at least one
+// multiple address family records. The result contains at least one
 // address when error is nil.
 func resolveInternetAddr(net, addr string, deadline time.Time) (netaddr, error) {
 	var (

diff --git a/src/pkg/net/sendfile_dragonfly.go b/src/pkg/net/sendfile_dragonfly.go
index a2219c1..bc88fd3 100644
--- a/src/pkg/net/sendfile_dragonfly.go
+++ b/src/pkg/net/sendfile_dragonfly.go

@@ -23,7 +23,7 @@
 // if handled == false, sendFile performed no work.
 func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
 	// DragonFly uses 0 as the "until EOF" value. If you pass in more bytes than the
-	// file contains, it will loop back to the beginning ad nauseum until it's sent
+	// file contains, it will loop back to the beginning ad nauseam until it's sent
 	// exactly the number of bytes told to. As such, we need to know exactly how many
 	// bytes to send.
 	var remain int64 = 0

diff --git a/src/pkg/net/sendfile_freebsd.go b/src/pkg/net/sendfile_freebsd.go
index 42fe799..ffc1472 100644
--- a/src/pkg/net/sendfile_freebsd.go
+++ b/src/pkg/net/sendfile_freebsd.go

@@ -23,7 +23,7 @@
 // if handled == false, sendFile performed no work.
 func sendFile(c *netFD, r io.Reader) (written int64, err error, handled bool) {
 	// FreeBSD uses 0 as the "until EOF" value. If you pass in more bytes than the
-	// file contains, it will loop back to the beginning ad nauseum until it's sent
+	// file contains, it will loop back to the beginning ad nauseam until it's sent
 	// exactly the number of bytes told to. As such, we need to know exactly how many
 	// bytes to send.
 	var remain int64 = 0

diff --git a/src/pkg/regexp/syntax/prog.go b/src/pkg/regexp/syntax/prog.go
index c4563ae..089b90d 100644
--- a/src/pkg/regexp/syntax/prog.go
+++ b/src/pkg/regexp/syntax/prog.go

@@ -597,7 +597,7 @@
 // makeOnePass creates a onepass Prog, if possible. It is possible if at any alt,
 // the match engine can always tell which branch to take. The routine may modify
 // p if it is turned into a onepass Prog. If it isn't possible for this to be a
-// onepass Prog, the Prog syntax.NotOnePass is returned. makeOnePass is resursive
+// onepass Prog, the Prog syntax.NotOnePass is returned. makeOnePass is recursive
 // to the size of the Prog
 func (p *Prog) makeOnePass() *Prog {
 	var (

diff --git a/src/pkg/runtime/pprof/pprof.go b/src/pkg/runtime/pprof/pprof.go
index 9808045..26aa0b8 100644
--- a/src/pkg/runtime/pprof/pprof.go
+++ b/src/pkg/runtime/pprof/pprof.go

@@ -20,7 +20,7 @@
 	"text/tabwriter"
 )
 
-// BUG(rsc): Profiles are incomplete and inaccuate on NetBSD and OS X.
+// BUG(rsc): Profiles are incomplete and inaccurate on NetBSD and OS X.
 // See http://golang.org/issue/6047 for details.
 
 // A Profile is a collection of stack traces showing the call sequences

diff --git a/src/pkg/sort/sort.go b/src/pkg/sort/sort.go
index 242c5ff..e980c29 100644
--- a/src/pkg/sort/sort.go
+++ b/src/pkg/sort/sort.go

@@ -287,7 +287,7 @@
 // Notes on stable sorting:
 // The used algorithms are simple and provable correct on all input and use
 // only logarithmic additional stack space.  They perform well if compared
-// experimentaly to other stable in-place sorting algorithms.
+// experimentally to other stable in-place sorting algorithms.
 //
 // Remarks on other algorithms evaluated:
 //  - GCC's 4.6.3 stable_sort with merge_without_buffer from libstdc++:

diff --git a/src/pkg/syscall/dir_plan9.go b/src/pkg/syscall/dir_plan9.go
index d9fb26b..697bf54 100644
--- a/src/pkg/syscall/dir_plan9.go
+++ b/src/pkg/syscall/dir_plan9.go

@@ -54,7 +54,7 @@
 }
 
 // Null assigns special "don't touch" values to members of d to
-// avoid modifiying them during syscall.Wstat.
+// avoid modifying them during syscall.Wstat.
 func (d *Dir) Null() { *d = nullDir }
 
 // Marshal encodes a 9P stat message corresponding to d into b

diff --git a/src/pkg/syscall/fd_nacl.go b/src/pkg/syscall/fd_nacl.go
index cbc8315..19cd98a 100644
--- a/src/pkg/syscall/fd_nacl.go
+++ b/src/pkg/syscall/fd_nacl.go

@@ -194,7 +194,7 @@
 	return f.impl.seek(offset, whence)
 }
 
-// defaulFileImpl imlements fileImpl.
+// defaulFileImpl implements fileImpl.
 // It can be embedded to complete a partial fileImpl implementation.
 type defaultFileImpl struct{}
 

diff --git a/src/pkg/syscall/mksyscall_windows.go b/src/pkg/syscall/mksyscall_windows.go
index 0fd1c3c..4225588 100644
--- a/src/pkg/syscall/mksyscall_windows.go
+++ b/src/pkg/syscall/mksyscall_windows.go

@@ -135,7 +135,7 @@
 }
 
 // SyscallArgList returns source code fragments representing p parameter
-// in syscall. Slices are transated into 2 syscall parameters: pointer to
+// in syscall. Slices are translated into 2 syscall parameters: pointer to
 // the first element and length.
 func (p *Param) SyscallArgList() []string {
 	var s string
@@ -321,7 +321,7 @@
 
 // extractSection extracts text out of string s starting after start
 // and ending just before end. found return value will indicate success,
-// and prefix, body and sufix will contain correspondent parts of string s.
+// and prefix, body and suffix will contain correspondent parts of string s.
 func extractSection(s string, start, end rune) (prefix, body, suffix string, found bool) {
 	s = trim(s)
 	if strings.HasPrefix(s, string(start)) {
@@ -617,7 +617,7 @@
 	}
 }
 
-// TODO: use println instead to print in the folowing template
+// TODO: use println instead to print in the following template
 const srcTemplate = `
 
 {{define "main"}}// go build mksyscall_windows.go && ./mksyscall_windows{{range .Files}} {{.}}{{end}}

diff --git a/src/pkg/syscall/route_dragonfly.go b/src/pkg/syscall/route_dragonfly.go
index acad7a2b..79190d2 100644
--- a/src/pkg/syscall/route_dragonfly.go
+++ b/src/pkg/syscall/route_dragonfly.go

@@ -30,7 +30,7 @@
 }
 
 // InterfaceAnnounceMessage represents a routing message containing
-// network interface arrival and depature information.
+// network interface arrival and departure information.
 type InterfaceAnnounceMessage struct {
 	Header IfAnnounceMsghdr
 }

diff --git a/src/pkg/syscall/route_freebsd.go b/src/pkg/syscall/route_freebsd.go
index eba6752..15897b1 100644
--- a/src/pkg/syscall/route_freebsd.go
+++ b/src/pkg/syscall/route_freebsd.go

@@ -36,7 +36,7 @@
 }
 
 // InterfaceAnnounceMessage represents a routing message containing
-// network interface arrival and depature information.
+// network interface arrival and departure information.
 type InterfaceAnnounceMessage struct {
 	Header IfAnnounceMsghdr
 }

diff --git a/src/pkg/syscall/route_netbsd.go b/src/pkg/syscall/route_netbsd.go
index a6baa02..9883aeb 100644
--- a/src/pkg/syscall/route_netbsd.go
+++ b/src/pkg/syscall/route_netbsd.go

@@ -27,7 +27,7 @@
 }
 
 // InterfaceAnnounceMessage represents a routing message containing
-// network interface arrival and depature information.
+// network interface arrival and departure information.
 type InterfaceAnnounceMessage struct {
 	Header IfAnnounceMsghdr
 }

diff --git a/src/pkg/syscall/route_openbsd.go b/src/pkg/syscall/route_openbsd.go
index 223c157..19f902d 100644
--- a/src/pkg/syscall/route_openbsd.go
+++ b/src/pkg/syscall/route_openbsd.go

@@ -27,7 +27,7 @@
 }
 
 // InterfaceAnnounceMessage represents a routing message containing
-// network interface arrival and depature information.
+// network interface arrival and departure information.
 type InterfaceAnnounceMessage struct {
 	Header IfAnnounceMsghdr
 }

diff --git a/src/pkg/time/zoneinfo_windows.go b/src/pkg/time/zoneinfo_windows.go
index 377a892..6046743 100644
--- a/src/pkg/time/zoneinfo_windows.go
+++ b/src/pkg/time/zoneinfo_windows.go

@@ -90,7 +90,7 @@
 	return "", errors.New(`English name for time zone "` + stdname + `" not found in registry`)
 }
 
-// extractCAPS exracts capital letters from description desc.
+// extractCAPS extracts capital letters from description desc.
 func extractCAPS(desc string) string {
 	var short []rune
 	for _, c := range desc {