1package m
 2
 3import (
 4	. "github.com/alecthomas/chroma" // nolint
 5	"github.com/alecthomas/chroma/lexers/internal"
 6)
 7
 8// Markdown lexer.
 9var Markdown = internal.Register(MustNewLexer(
10	&Config{
11		Name:      "markdown",
12		Aliases:   []string{"md", "mkd"},
13		Filenames: []string{"*.md", "*.mkd", "*.markdown"},
14		MimeTypes: []string{"text/x-markdown"},
15	},
16	Rules{
17		"root": {
18			{`^(#[^#].+\n)`, ByGroups(GenericHeading), nil},
19			{`^(#{2,6}.+\n)`, ByGroups(GenericSubheading), nil},
20			{`^(\s*)([*-] )(\[[ xX]\])( .+\n)`, ByGroups(Text, Keyword, Keyword, UsingSelf("inline")), nil},
21			{`^(\s*)([*-])(\s)(.+\n)`, ByGroups(Text, Keyword, Text, UsingSelf("inline")), nil},
22			{`^(\s*)([0-9]+\.)( .+\n)`, ByGroups(Text, Keyword, UsingSelf("inline")), nil},
23			{`^(\s*>\s)(.+\n)`, ByGroups(Keyword, GenericEmph), nil},
24			{"^(```\\n)([\\w\\W]*?)(^```$)", ByGroups(String, Text, String), nil},
25			{"^(```)(\\w+)(\\n)([\\w\\W]*?)(^```$)",
26				UsingByGroup(
27					internal.Get,
28					2, 4,
29					String, String, String, Text, String,
30				),
31				nil,
32			},
33			Include("inline"),
34		},
35		"inline": {
36			{`\\.`, Text, nil},
37			{`(\s)([*_][^*_]+[*_])(\W|\n)`, ByGroups(Text, GenericEmph, Text), nil},
38			{`(\s)((\*\*|__).*?)\3((?=\W|\n))`, ByGroups(Text, GenericStrong, GenericStrong, Text), nil},
39			{`(\s)(~~[^~]+~~)((?=\W|\n))`, ByGroups(Text, GenericDeleted, Text), nil},
40			{"`[^`]+`", LiteralStringBacktick, nil},
41			{`[@#][\w/:]+`, NameEntity, nil},
42			{`(!?\[)([^]]+)(\])(\()([^)]+)(\))`, ByGroups(Text, NameTag, Text, Text, NameAttribute, Text), nil},
43			{`[^\\\s]+`, Text, nil},
44			{`.|\n`, Text, nil},
45		},
46	},
47))