func strings.ToLower

245 uses

	strings (current package)
		strings.go#L580: func ToLower(s string) string {

	cloud.google.com/go/internal/optional
		optional.go#L107: 	panic(fmt.Sprintf("optional.%s value should be %s, got %T", capType, strings.ToLower(capType), v))

	cloud.google.com/go/logging
		logging.go#L550: 	sl := strings.ToLower(s)
		logging.go#L552: 		if strings.ToLower(name) == sl {

	cloud.google.com/go/storage
		storage.go#L368: 		header = strings.ToLower(strings.TrimSpace(header))
		storage.go#L425: 		key = strings.ToLower(strings.TrimSpace(key))
		storage.go#L621: 		if strings.HasPrefix(strings.ToLower(h), "x-goog-content-sha256") && strings.Contains(h, ":") {

	crypto/tls
		common.go#L1033: 		name := strings.ToLower(clientHello.ServerName)

	encoding/xml
		xml.go#L526: 	name := strings.ToLower(d.stk.name.Local)
		xml.go#L528: 		if strings.ToLower(s) == name {

	github.com/andybalholm/cascadia
		parser.go#L476: 		val = strings.ToLower(val)
		selector.go#L427: 		text = strings.ToLower(nodeOwnText(n))
		selector.go#L430: 		text = strings.ToLower(nodeText(n))

	github.com/aws/aws-sdk-go/aws/awsutil
		path_value.go#L36: 		} else if caseSensitive && c != "*" && strings.ToLower(c[0:1]) == c[0:1] {
		prettify.go#L42: 			if name[0:1] == strings.ToLower(name[0:1]) {
		string_value.go#L30: 			if ft.Name[0:1] == strings.ToLower(ft.Name[0:1]) {

	github.com/aws/aws-sdk-go/aws/ec2metadata
		service.go#L141: 	if strings.ToLower(os.Getenv(disableServiceEnvVar)) == "true" {

	github.com/aws/aws-sdk-go/aws/request
		request.go#L692: 	lowerCaseScheme := strings.ToLower(scheme)

	github.com/aws/aws-sdk-go/aws/signer/v4
		v4.go#L618: 		lowerCaseKey := strings.ToLower(k)

	github.com/aws/aws-sdk-go/private/protocol/rest
		build.go#L75: 		if n := v.Type().Field(i).Name; n[0:1] == strings.ToLower(n[0:1]) {
		unmarshal.go#L119: 		if n := field.Name; n[0:1] == strings.ToLower(n[0:1]) {
		unmarshal.go#L174: 					k = strings.ToLower(k)

	github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil
		unmarshal.go#L136: 		if c := field.Name[0:1]; strings.ToLower(c) == c {

	github.com/evanw/esbuild/internal/bundler
		bundler.go#L867: 	return strings.ToLower(absPath)

	github.com/evanw/esbuild/internal/css_parser
		css_decls.go#L422: 		if hex, ok := colorNameToHex[strings.ToLower(text)]; ok {

	github.com/evanw/esbuild/internal/fs
		fs.go#L58: 		if entry := entries.data[strings.ToLower(query)]; entry != nil {
		fs_mock.go#L40: 				dir.data[strings.ToLower(base)] = &Entry{kind: FileEntry, base: base}
		fs_mock.go#L42: 				dir.data[strings.ToLower(base)] = &Entry{kind: DirEntry, base: base}
		fs_real.go#L147: 			entries.data[strings.ToLower(name)] = &Entry{

	github.com/go-git/gcfg/types
		enum.go#L28: 			k = strings.ToLower(k)
		enum.go#L37: 		s = strings.ToLower(s)

	github.com/go-git/go-git/v5/plumbing/format/config
		option.go#L22: 	return strings.ToLower(o.Key) == strings.ToLower(key)
		section.go#L64: 	return strings.ToLower(s.Name) == strings.ToLower(name)

	github.com/go-git/go-git/v5/plumbing/transport
		common.go#L144: 				port, ok := defaultPorts[strings.ToLower(u.Protocol)]

	github.com/golang/protobuf/proto
		text_decode.go#L122: 			gd := fds.ByName(protoreflect.Name(strings.ToLower(string(name))))

	github.com/google/licensecheck
		scan.go#L226: 	url = strings.ToLower(url)

	github.com/google/licensecheck/old
		license.go#L395: 	url = strings.ToLower(url)

	github.com/google/safehtml
		url.go#L116: 	url = strings.ToLower(url)

	github.com/google/safehtml/template
		escape.go#L712: 		ret.scriptType = strings.ToLower(string(s[:i]))
		escape.go#L716: 		ret.linkRel = " " + strings.Join(strings.Fields(strings.TrimSpace(strings.ToLower(string(s[:i])))), " ") + " "
		transition.go#L138: 		attr:    attr{name: strings.ToLower(string(s[i:j]))},
		transition.go#L298: 	return j, element{name: strings.ToLower(string(s[i:j]))}

	github.com/jackc/pgtype
		array.go#L356: 	if src == "" || (len(src) == 4 && strings.ToLower(src) == "null") || isSpace(src[0]) || isSpace(src[len(src)-1]) || strings.ContainsAny(src, `{},"\`) {
		hstore.go#L235: 	if src == "" || (len(src) == 4 && strings.ToLower(src) == "null") || strings.ContainsAny(src, ` {},"\=>`) {

	github.com/kevinburke/ssh_config
		config.go#L254: 	lowerKey := strings.ToLower(key)
		config.go#L265: 				lkey := strings.ToLower(t.Key)
		parser.go#L106: 	if strings.ToLower(key.val) == "match" {
		parser.go#L111: 	if strings.ToLower(key.val) == "host" {
		parser.go#L134: 	if strings.ToLower(key.val) == "include" {
		validators.go#L15: 	return defaults[strings.ToLower(keyword)]
		validators.go#L20: 	strings.ToLower("BatchMode"):                        true,
		validators.go#L21: 	strings.ToLower("CanonicalizeFallbackLocal"):        true,
		validators.go#L22: 	strings.ToLower("ChallengeResponseAuthentication"):  true,
		validators.go#L23: 	strings.ToLower("CheckHostIP"):                      true,
		validators.go#L24: 	strings.ToLower("ClearAllForwardings"):              true,
		validators.go#L25: 	strings.ToLower("Compression"):                      true,
		validators.go#L26: 	strings.ToLower("EnableSSHKeysign"):                 true,
		validators.go#L27: 	strings.ToLower("ExitOnForwardFailure"):             true,
		validators.go#L28: 	strings.ToLower("ForwardAgent"):                     true,
		validators.go#L29: 	strings.ToLower("ForwardX11"):                       true,
		validators.go#L30: 	strings.ToLower("ForwardX11Trusted"):                true,
		validators.go#L31: 	strings.ToLower("GatewayPorts"):                     true,
		validators.go#L32: 	strings.ToLower("GSSAPIAuthentication"):             true,
		validators.go#L33: 	strings.ToLower("GSSAPIDelegateCredentials"):        true,
		validators.go#L34: 	strings.ToLower("HostbasedAuthentication"):          true,
		validators.go#L35: 	strings.ToLower("IdentitiesOnly"):                   true,
		validators.go#L36: 	strings.ToLower("KbdInteractiveAuthentication"):     true,
		validators.go#L37: 	strings.ToLower("NoHostAuthenticationForLocalhost"): true,
		validators.go#L38: 	strings.ToLower("PasswordAuthentication"):           true,
		validators.go#L39: 	strings.ToLower("PermitLocalCommand"):               true,
		validators.go#L40: 	strings.ToLower("PubkeyAuthentication"):             true,
		validators.go#L41: 	strings.ToLower("RhostsRSAAuthentication"):          true,
		validators.go#L42: 	strings.ToLower("RSAAuthentication"):                true,
		validators.go#L43: 	strings.ToLower("StreamLocalBindUnlink"):            true,
		validators.go#L44: 	strings.ToLower("TCPKeepAlive"):                     true,
		validators.go#L45: 	strings.ToLower("UseKeychain"):                      true,
		validators.go#L46: 	strings.ToLower("UsePrivilegedPort"):                true,
		validators.go#L47: 	strings.ToLower("VisualHostKey"):                    true,
		validators.go#L51: 	strings.ToLower("CanonicalizeMaxDots"):     true,
		validators.go#L52: 	strings.ToLower("CompressionLevel"):        true, // 1 to 9
		validators.go#L53: 	strings.ToLower("ConnectionAttempts"):      true,
		validators.go#L54: 	strings.ToLower("ConnectTimeout"):          true,
		validators.go#L55: 	strings.ToLower("NumberOfPasswordPrompts"): true,
		validators.go#L56: 	strings.ToLower("Port"):                    true,
		validators.go#L57: 	strings.ToLower("ServerAliveCountMax"):     true,
		validators.go#L58: 	strings.ToLower("ServerAliveInterval"):     true,
		validators.go#L70: 	lkey := strings.ToLower(key)
		validators.go#L84: 	strings.ToLower("AddKeysToAgent"):                  "no",
		validators.go#L85: 	strings.ToLower("AddressFamily"):                   "any",
		validators.go#L86: 	strings.ToLower("BatchMode"):                       "no",
		validators.go#L87: 	strings.ToLower("CanonicalizeFallbackLocal"):       "yes",
		validators.go#L88: 	strings.ToLower("CanonicalizeHostname"):            "no",
		validators.go#L89: 	strings.ToLower("CanonicalizeMaxDots"):             "1",
		validators.go#L90: 	strings.ToLower("ChallengeResponseAuthentication"): "yes",
		validators.go#L91: 	strings.ToLower("CheckHostIP"):                     "yes",
		validators.go#L93: 	strings.ToLower("Cipher"):                    "3des",
		validators.go#L94: 	strings.ToLower("Ciphers"):                   "chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc",
		validators.go#L95: 	strings.ToLower("ClearAllForwardings"):       "no",
		validators.go#L96: 	strings.ToLower("Compression"):               "no",
		validators.go#L97: 	strings.ToLower("CompressionLevel"):          "6",
		validators.go#L98: 	strings.ToLower("ConnectionAttempts"):        "1",
		validators.go#L99: 	strings.ToLower("ControlMaster"):             "no",
		validators.go#L100: 	strings.ToLower("EnableSSHKeysign"):          "no",
		validators.go#L101: 	strings.ToLower("EscapeChar"):                "~",
		validators.go#L102: 	strings.ToLower("ExitOnForwardFailure"):      "no",
		validators.go#L103: 	strings.ToLower("FingerprintHash"):           "sha256",
		validators.go#L104: 	strings.ToLower("ForwardAgent"):              "no",
		validators.go#L105: 	strings.ToLower("ForwardX11"):                "no",
		validators.go#L106: 	strings.ToLower("ForwardX11Timeout"):         "20m",
		validators.go#L107: 	strings.ToLower("ForwardX11Trusted"):         "no",
		validators.go#L108: 	strings.ToLower("GatewayPorts"):              "no",
		validators.go#L109: 	strings.ToLower("GlobalKnownHostsFile"):      "/etc/ssh/ssh_known_hosts /etc/ssh/ssh_known_hosts2",
		validators.go#L110: 	strings.ToLower("GSSAPIAuthentication"):      "no",
		validators.go#L111: 	strings.ToLower("GSSAPIDelegateCredentials"): "no",
		validators.go#L112: 	strings.ToLower("HashKnownHosts"):            "no",
		validators.go#L113: 	strings.ToLower("HostbasedAuthentication"):   "no",
		validators.go#L115: 	strings.ToLower("HostbasedKeyTypes"): "ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,ssh-rsa",
		validators.go#L116: 	strings.ToLower("HostKeyAlgorithms"): "ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,ssh-rsa",
		validators.go#L119: 	strings.ToLower("IdentitiesOnly"): "no",
		validators.go#L120: 	strings.ToLower("IdentityFile"):   "~/.ssh/identity",
		validators.go#L125: 	strings.ToLower("KbdInteractiveAuthentication"): "yes",
		validators.go#L127: 	strings.ToLower("KexAlgorithms"): "curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1",
		validators.go#L128: 	strings.ToLower("LogLevel"):      "INFO",
		validators.go#L129: 	strings.ToLower("MACs"):          "umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1",
		validators.go#L131: 	strings.ToLower("NoHostAuthenticationForLocalhost"): "no",
		validators.go#L132: 	strings.ToLower("NumberOfPasswordPrompts"):          "3",
		validators.go#L133: 	strings.ToLower("PasswordAuthentication"):           "yes",
		validators.go#L134: 	strings.ToLower("PermitLocalCommand"):               "no",
		validators.go#L135: 	strings.ToLower("Port"):                             "22",
		validators.go#L137: 	strings.ToLower("PreferredAuthentications"): "gssapi-with-mic,hostbased,publickey,keyboard-interactive,password",
		validators.go#L138: 	strings.ToLower("Protocol"):                 "2",
		validators.go#L139: 	strings.ToLower("ProxyUseFdpass"):           "no",
		validators.go#L140: 	strings.ToLower("PubkeyAcceptedKeyTypes"):   "ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,ssh-rsa",
		validators.go#L141: 	strings.ToLower("PubkeyAuthentication"):     "yes",
		validators.go#L142: 	strings.ToLower("RekeyLimit"):               "default none",
		validators.go#L143: 	strings.ToLower("RhostsRSAAuthentication"):  "no",
		validators.go#L144: 	strings.ToLower("RSAAuthentication"):        "yes",
		validators.go#L146: 	strings.ToLower("ServerAliveCountMax"):   "3",
		validators.go#L147: 	strings.ToLower("ServerAliveInterval"):   "0",
		validators.go#L148: 	strings.ToLower("StreamLocalBindMask"):   "0177",
		validators.go#L149: 	strings.ToLower("StreamLocalBindUnlink"): "no",
		validators.go#L150: 	strings.ToLower("StrictHostKeyChecking"): "ask",
		validators.go#L151: 	strings.ToLower("TCPKeepAlive"):          "yes",
		validators.go#L152: 	strings.ToLower("Tunnel"):                "no",
		validators.go#L153: 	strings.ToLower("TunnelDevice"):          "any:any",
		validators.go#L154: 	strings.ToLower("UpdateHostKeys"):        "no",
		validators.go#L155: 	strings.ToLower("UseKeychain"):           "no",
		validators.go#L156: 	strings.ToLower("UsePrivilegedPort"):     "no",
		validators.go#L158: 	strings.ToLower("UserKnownHostsFile"): "~/.ssh/known_hosts ~/.ssh/known_hosts2",
		validators.go#L159: 	strings.ToLower("VerifyHostKeyDNS"):   "no",
		validators.go#L160: 	strings.ToLower("VisualHostKey"):      "no",
		validators.go#L161: 	strings.ToLower("XAuthLocation"):      "/usr/X11R6/bin/xauth",

	github.com/microcosm-cc/bluemonday
		policy.go#L158: 		abp.attrNames = append(abp.attrNames, strings.ToLower(attrName))
		policy.go#L220: 		element = strings.ToLower(element)
		policy.go#L275: 		element = strings.ToLower(element)
		policy.go#L358: 		scheme = strings.ToLower(scheme)
		policy.go#L380: 	scheme = strings.ToLower(scheme)
		policy.go#L411: 		element = strings.ToLower(element)
		policy.go#L428: 		delete(p.setOfElementsToSkipContent, strings.ToLower(element))

	github.com/prometheus/client_golang/prometheus/promhttp
		instrument_server.go#L341: 		return strings.ToLower(m)

	github.com/russross/blackfriday/v2
		html.go#L195: 		if strings.ToLower(string(tag[i]))[0] != tagname[j] {
		markdown.go#L211: 	ref, found = p.refs[strings.ToLower(refid)]

	github.com/yuin/goldmark/parser
		html_block.go#L134: 		tagName := strings.ToLower(string(line[match[4]:match[5]]))
		html_block.go#L145: 			_, ok := allowedBlockTags[strings.ToLower(tagName)]

	go.opentelemetry.io/otel/api/trace
		b3_propagator.go#L199: 	switch strings.ToLower(sampled) {

	go/doc
		synopsis.go#L71: 		if strings.HasPrefix(strings.ToLower(s), prefix) {

	golang.org/x/mod/zip
		zip.go#L274: 		if strings.ToLower(p) == "go.mod" && p != "go.mod" {

	golang.org/x/net/html
		doctype.go#L29: 	n.Data = strings.ToLower(n.Data)
		doctype.go#L38: 	key := strings.ToLower(s[:6])
		doctype.go#L71: 			public := strings.ToLower(n.Attr[0].Val)
		doctype.go#L90: 			strings.ToLower(lastAttr.Val) == "http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd" {
		foreign.go#L43: 					val := strings.ToLower(a.Val)
		parse.go#L1016: 						if strings.ToLower(t.Val) == "hidden" {
		parse.go#L1444: 				if t.Key == "type" && strings.ToLower(t.Val) == "hidden" {
		token.go#L803: 		z.rawTag = strings.ToLower(string(z.buf[z.data.start:z.data.end]))
		token.go#L1218: 		switch s := strings.ToLower(contextTag); s {

	golang.org/x/net/http2
		headermap.go#L87: 	return strings.ToLower(v)
		server.go#L2792: 		switch strings.ToLower(k) {
		transport.go#L1618: 		name = strings.ToLower(name)
		transport.go#L1668: 		lowKey := strings.ToLower(k)

	golang.org/x/pkgsite/internal/frontend
		goldmark.go#L193: 	str = strings.ToLower(str)
		overview.go#L113: 	ext := strings.ToLower(filepath.Ext(filename))

	golang.org/x/pkgsite/internal/godoc/dochtml
		dochtml.go#L456: 			Label:          strings.Title(strings.ToLower(marker)),

	golang.org/x/pkgsite/internal/godoc/internal/doc
		synopsis.go#L71: 		if strings.HasPrefix(strings.ToLower(s), prefix) {

	golang.org/x/pkgsite/internal/licenses
		licenses.go#L244: 		fileNamesLowercase[strings.ToLower(f)] = true
		licenses.go#L414: 		if !fileNamesLowercase[strings.ToLower(path.Base(f.Name))] {

	golang.org/x/pkgsite/internal/log
		log.go#L244: 	v = strings.ToLower(v)

	golang.org/x/pkgsite/internal/middleware
		requestlog.go#L106: 	if strings.Contains(strings.ToLower(userAgent), "bot/") || strings.Contains(userAgent, "robot") {

	golang.org/x/pkgsite/internal/postgres
		searchdoc.go#L112: 	fields := strings.Fields(strings.ToLower(s))
		searchdoc.go#L175: 	ext := strings.ToLower(filepath.Ext(filename))

	golang.org/x/pkgsite/internal/worker
		pages.go#L110: 		ResourcePrefix: strings.ToLower(env(s.cfg)) + "-",
		pages.go#L202: 		ResourcePrefix:  strings.ToLower(env(s.cfg)) + "-",

	golang.org/x/text/internal/language
		language.go#L586: 	s = strings.ToLower(s)

	golang.org/x/text/internal/language/compact
		language.go#L70: 		tag, _ = tag.SetTypeForKey("rg", strings.ToLower(loc.RegionID.String())+"zzzz")

	golang.org/x/text/language
		match.go#L114: 			tt, _ = tt.SetTypeForKey("rg", strings.ToLower(r)+"zzzz")

	google.golang.org/api/transport/http
		dial.go#L294: 	return strings.ToLower(mode)

	google.golang.org/grpc
		rpc_util.go#L378: 	return ContentSubtypeCallOption{ContentSubtype: strings.ToLower(contentSubtype)}

	google.golang.org/grpc/balancer
		balancer.go#L53: 	m[strings.ToLower(b.Name())] = b
		balancer.go#L72: 	if b, ok := m[strings.ToLower(name)]; ok {

	google.golang.org/grpc/encoding
		encoding.go#L112: 	contentSubtype := strings.ToLower(codec.Name())

	google.golang.org/grpc/internal/transport
		handler_server.go#L93: 		k = strings.ToLower(k)
		http2_client.go#L491: 				headerFields = append(headerFields, hpack.HeaderField{Name: strings.ToLower(k), Value: encodeMetadataHeader(k, v)})
		http2_client.go#L539: 			k = strings.ToLower(k)
		http2_client.go#L562: 			k = strings.ToLower(k)

	google.golang.org/grpc/metadata
		metadata.go#L55: 		key := strings.ToLower(k)
		metadata.go#L81: 			key = strings.ToLower(s)
		metadata.go#L101: 	k = strings.ToLower(k)
		metadata.go#L110: 	k = strings.ToLower(k)
		metadata.go#L119: 	k = strings.ToLower(k)

	google.golang.org/protobuf/encoding/protojson
		decode.go#L191: 					gd := fieldDescs.ByName(pref.Name(strings.ToLower(name)))

	google.golang.org/protobuf/encoding/prototext
		decode.go#L165: 				gd := fieldDescs.ByName(pref.Name(strings.ToLower(string(name))))

	google.golang.org/protobuf/internal/encoding/tag
		tag.go#L130: 		f.L0.FullName = pref.FullName(strings.ToLower(string(f.L0.FullName)))

	google.golang.org/protobuf/internal/encoding/text
		decode_token.go#L315: 		if f, ok := floatLits[strings.ToLower(string(t.raw))]; ok {
		decode_token.go#L338: 		if f, ok := floatLits[strings.ToLower(string(t.raw))]; ok {

	google.golang.org/protobuf/types/known/fieldmaskpb
		field_mask.pb.go#L383: 				gd := md.Fields().ByName(protoreflect.Name(strings.ToLower(field)))

	gopkg.in/yaml.v2
		yaml.go#L395: 			info.Key = strings.ToLower(field.Name)

	html/template
		html.go#L241: 	s = strings.ToLower(s)
		js.go#L404: 	mimeType = strings.ToLower(mimeType)
		transition.go#L110: 	attrName := strings.ToLower(string(s[i:j]))
		transition.go#L578: 	return j, elementNameMap[strings.ToLower(string(s[i:j]))]

	mime
		encodedword.go#L345: 		r, err := d.CharsetReader(strings.ToLower(charset), bytes.NewReader(content))
		mediatype.go#L26: 		b.WriteString(strings.ToLower(t))
		mediatype.go#L32: 		b.WriteString(strings.ToLower(major))
		mediatype.go#L34: 		b.WriteString(strings.ToLower(sub))
		mediatype.go#L50: 		b.WriteString(strings.ToLower(attribute))
		mediatype.go#L145: 	mediatype = strings.TrimSpace(strings.ToLower(v[0:i]))
		mediatype.go#L248: 	charset := strings.ToLower(sv[0])
		mediatype.go#L335: 	param = strings.ToLower(param)
		type.go#L126: 			si, _ := mimeTypesLower.Load(strings.ToLower(ext))
		type.go#L181: 	extLower := strings.ToLower(extension)

	net/http
		client.go#L544: 	return method[:1] + strings.ToLower(method[1:])
		cookie.go#L96: 			lowerAttr := strings.ToLower(attr)
		cookie.go#L104: 				lowerVal := strings.ToLower(val)
		h2_bundle.go#L3102: 	return strings.ToLower(v)
		h2_bundle.go#L6347: 		switch strings.ToLower(k) {
		h2_bundle.go#L8121: 		name = strings.ToLower(name)
		h2_bundle.go#L8171: 		lowKey := strings.ToLower(k)
		transfer.go#L641: 	if strings.ToLower(textproto.TrimString(raw[0])) != "chunked" {

	net/http/httputil
		reverseproxy.go#L541: 	return strings.ToLower(h.Get("Upgrade"))

	net/url
		url.go#L531: 	url.Scheme = strings.ToLower(url.Scheme)

	os/exec
		exec.go#L758: 			k = strings.ToLower(k)

	vendor/golang.org/x/net/http/httpproxy
		proxy.go#L191: 	addr = strings.ToLower(strings.TrimSpace(host))
		proxy.go#L217: 		p = strings.ToLower(strings.TrimSpace(p))