You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: org.go
    path of file: ./repos/sliver/vendor/github.com/alecthomas/chroma/lexers/o
    
    the code of the file until where you have to start completion: package o

import (
	. "github.com/alec
    
func orgRules() Rules {
	return Rules{
		"root": {
			{`^# .*$`, Comment, nil},
			// Headings
			{`^(\*)( COMMENT)( .*)$`, ByGroups(GenericHeading, NameEntity, GenericStrong), nil},
			{`^(\*\*+)( COMMENT)( .*)$`, ByGroups(GenericSubheading, NameEntity, Text), nil},
			{`^(\*)( DONE)( .*)$`, ByGroups(GenericHeading, LiteralStringRegex, GenericStrong), nil},
			{`^(\*\*+)( DONE)( .*)$`, ByGroups(GenericSubheading, LiteralStringRegex, Text), nil},
			{`^(\*)( TODO)( .*)$`, ByGroups(GenericHeading, Error, GenericStrong), nil},
			{`^(\*\*+)( TODO)( .*)$`, ByGroups(GenericSubheading, Error, Text), nil},
			{`^(\*)( .+?)( :[a-zA-Z0-9_@:]+:)$`, ByGroups(GenericHeading, GenericStrong, GenericEmph), nil}, // Level 1 heading with tags
			{`^(\*)( .+)$`, ByGroups(GenericHeading, GenericStrong), nil},                                   // // Level 1 heading with NO tags
			{`^(\*\*+)( .+?)( :[a-zA-Z0-9_@:]+:)$`, ByGroups(GenericSubheading, Text, GenericEmph), nil},    // Level 2+ heading with tags
			{`^(\*\*+)( .+)$`, ByGroups(GenericSubheading, Text), nil},                                      // Level 2+ heading with NO tags
			// Checkbox lists
			{`^( *)([+-] )(\[[ X]\])( .+)$`, ByGroups(Text, Keyword, Keyword, UsingSelf("inline")), nil},
			{`^( +)(\* )(\[[ X]\])( .+)$`, ByGroups(Text, Keyword, Keyword, UsingSelf("inline")), nil},
			// Definition lists
			{`^( *)([+-] )([^ \n]+ ::)( .+)$`, ByGroups(Text, Keyword, Keyword, UsingSelf("inline")), nil},
			{`^( +)(\* )([^ \n]+ ::)( .+)$`, ByGroups(Text, Keyword, Keyword, UsingSelf("inline")), nil},
			// Unordered lists
			{`^( *)([+-] )(.+)$`, ByGroups(Text, Keyword, UsingSelf("inline")), nil},
			{`^( +)(\* )(.+)$`, ByGroups(Text, Keyword, UsingSelf("inline")), nil},
			// Ordered lists
			{`^( *)([0-9]+[.)])( \[@[0-9]+\])( .+)$`, ByGroups(Text, Keyword, GenericEmph, UsingSelf("inline")), nil},
			{`^( *)([0-9]+[.)])( .+)$`, ByGroups(Text, Keyword, UsingSelf("inline")), nil},
			// Dynamic Blocks
			{`(?i)^( *#\+begin: )([^ ]+)([\w\W]*?\n)([\w\W]*?)(^ *#\+end: *$)`, ByGroups(Comment, CommentSpecial, Comment, UsingSelf("inline"), Comment), nil},
			// Blocks
			// - Comment Blocks
			{`(?i)^( *#\+begin_comment *\n)([\w\W]*?)(^ *#\+end_comment *$)`, ByGroups(Comment, Comment, Comment), nil},
			// - Src Blocks
			{
				`(?i)^( *#\+begin_src )([^ \n]+)(.*?\n)([\w\W]*?)(^ *#\+end_src *$)`,
				UsingByGroup(
					internal.Get,
					2, 4,
					Comment, CommentSpecial, Comment, Text, Comment,
				),
				nil,
			},
			// - Export Blocks
			{
				`(?i)^( *#\+begin_export )(\w+)( *\n)([\w\W]*?)(^ *#\+end_export *$)`,
				UsingByGroup(
					internal.Get,
					2, 4,
					Comment, CommentSpecial, Text, Text, Comment,
				),
				nil,
			},
			// - Org Special, Example, Verse, etc. Blocks
			{`(?i)^( *#\+begin_)(\w+)( *\n)([\w\W]*?)(^ *#\+end_\2)( *$)`, ByGroups(Comment, Comment, Text, Text, Comment, Text), nil},
			// Keywords
			{`^(#\+\w+)(:.*)$`, ByGroups(CommentSpecial, Comment), nil}, // Other Org keywords like #+title
			// Properties and Drawers
			{`(?i)^( *:\w+: *\n)([\w\W]*?)(^ *:end: *$)`, ByGroups(Comment, CommentSpecial, Comment), nil},
			// Line break operator
			{`^(.*)(\\\\)$`, ByGroups(UsingSelf("inline"), Operator), nil},
			// Deadline/Scheduled
			{`(?i)^( *(?:DEADLINE|SCHEDULED): )(<[^<>]+?> *)$`, ByGroups(Comment, CommentSpecial), nil}, // DEADLINE/SCHEDULED: <datestamp>
			// DONE state CLOSED
			{`(?i)^( *CLOSED: )(\[[^][]+?\] *)$`, ByGroups(Comment, CommentSpecial), nil}, // CLOSED: [datestamp]
			// All other lines
			Include("inline"),
		},
		"inline": {
			{`(\s)*(\*[^ \n*][^*]+?[^ \n*]\*)((?=\W|\n|$))`, ByGroups(Text, GenericStrong, Text), nil},                          // Bold
			{`(\s)*(/[^/]+?/)((?=\W|\n|$))`, ByGroups(Text, GenericEmph, Text), nil},                                            // Italic
			{`(\s)*(=[^\n=]+?=)((?=\W|\n|$))`, ByGroups(Text, NameClass, Text), nil},                                            // Verbatim
			{`(\s)*(~[^\n~]+?~)((?=\W|\n|$))`, ByGroups(Text, NameClass, Text), nil},                                            // Code
			{`(\s)*(\+[^+]+?\+)((?=\W|\n|$))`, ByGroups(Text, GenericDeleted, Text), nil},                                       // Strikethrough
			{`(\s)*(_[^_]+?_)((?=\W|\n|$))`, ByGroups(Text, GenericUnderline, Text), nil},                                       // Underline
			{`(<)([^<>]+?)(>)`, ByGroups(Text, String, Text), nil},                                                              // <datestamp>
			{`[{]{3}[^}]+[}]{3}`, NameBuiltin, nil},                                                                             // {{{macro(foo,1)}}}
			{`([^[])(\[fn:)([^]]+?)(\])([^]])`, ByGroups(Text, NameBuiltinPseudo, LiteralString, NameBuiltinPseudo, Text), nil}, // [fn:1]
			// Links
			{`(\[\[)([^][]+?)(\]\[)([^][]+)(\]\])`, ByGroups(Text, NameAttribute, Text, NameTag, Text), nil}, // [[link][descr]]
			{`(\[\[)([^][]+?)(\]\])`, ByGroups(Text, NameAttribute, Text), nil},                              // [[link]]
			{`(<<)([^<>]+?)(>>)`, ByGroups(Text, NameAttribute, Text), nil},                                  // <<targetlink>>
			// Tables
			{`^( *)(\|[ -].*?[ -]\|)$`, ByGroups(Text, String), nil},
			// Blank lines, newlines
			{`\n`, Text, nil},
			// Any other text
			{`.`, Text, nil},
		},
	}