var Factor = internal.Register(MustNewLazyLexer(
	&Config{
		Name:      "Factor",
		Aliases:   []string{"factor"},
		Filenames: []string{"*.factor"},
		MimeTypes: []string{"text/x-factor"},
	},
	factorRules,
))

var Fennel = internal.Register(MustNewLazyLexer(
	&Config{
		Name:      "Fennel",
		Aliases:   []string{"fennel", "fnl"},
		Filenames: []string{"*.fennel"},
		MimeTypes: []string{"text/x-fennel", "application/x-fennel"},
	},
	fennelRules,
))

var Fish = internal.Register(MustNewLazyLexer(
	&Config{
		Name:      "Fish",
		Aliases:   []string{"fish", "fishshell"},
		Filenames: []string{"*.fish", "*.load"},
		MimeTypes: []string{"application/x-fish"},
	},
	fishRules,
))

var Forth = internal.Register(MustNewLazyLexer(
	&Config{
		Name:            "Forth",
		Aliases:         []string{"forth"},
		Filenames:       []string{"*.frt", "*.fth", "*.fs"},
		MimeTypes:       []string{"application/x-forth"},
		CaseInsensitive: true,
	},
	forthRules,
))

var Fortran = internal.Register(MustNewLazyLexer(
	&Config{
		Name:            "Fortran",
		Aliases:         []string{"fortran"},
		Filenames:       []string{"*.f03", "*.f90", "*.F03", "*.F90"},
		MimeTypes:       []string{"text/x-fortran"},
		CaseInsensitive: true,
	},
	fortranRules,
))

var FortranFixed = internal.Register(MustNewLazyLexer(
	&Config{
		Name:            "FortranFixed",
		Aliases:         []string{"fortranfixed"},
		Filenames:       []string{"*.f", "*.F"},
		MimeTypes:       []string{"text/x-fortran"},
		NotMultiline:    true,
		CaseInsensitive: true,
	},
	func() Rules {
		return Rules{
			"root": {
				{`[C*].*\n`, Comment, nil},
				{`#.*\n`, CommentPreproc, nil},
				{`[\t ]*!.*\n`, Comment, nil},
				{`(.{5})`, NameLabel, Push("cont-char")},
				{`.*\n`, Using(Fortran), nil},
			},
			"cont-char": {
				{` `, Text, Push("code")},
				{`0`, Comment, Push("code")},
				{`.`, GenericStrong, Push("code")},
			},
			"code": {
				{`(.{66})(.*)(\n)`, ByGroups(Using(Fortran), Comment, Text), Push("root")},
				{`.*\n`, Using(Fortran), Push("root")},
				Default(Push("root")),
			},
		}
	},
))

var Fsharp = internal.Register(MustNewLazyLexer(
	&Config{
		Name:      "FSharp",
		Aliases:   []string{"fsharp"},
		Filenames: []string{"*.fs", "*.fsi"},
		MimeTypes: []string{"text/x-fsharp"},
	},
	fsharpRules,
))