/usr/share/gocode/src/github.com/alecthomas/chroma/lexers/t/tex.go is in golang-github-alecthomas-chroma-dev 0.4.0+git20180402.51d250f-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | package t
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Tex lexer.
var TeX = internal.Register(MustNewLexer(
&Config{
Name: "TeX",
Aliases: []string{"tex", "latex"},
Filenames: []string{"*.tex", "*.aux", "*.toc"},
MimeTypes: []string{"text/x-tex", "text/x-latex"},
},
Rules{
"general": {
{`%.*?\n`, Comment, nil},
{`[{}]`, NameBuiltin, nil},
{`[&_^]`, NameBuiltin, nil},
},
"root": {
{`\\\[`, LiteralStringBacktick, Push("displaymath")},
{`\\\(`, LiteralString, Push("inlinemath")},
{`\$\$`, LiteralStringBacktick, Push("displaymath")},
{`\$`, LiteralString, Push("inlinemath")},
{`\\([a-zA-Z]+|.)`, Keyword, Push("command")},
{`\\$`, Keyword, nil},
Include("general"),
{`[^\\$%&_^{}]+`, Text, nil},
},
"math": {
{`\\([a-zA-Z]+|.)`, NameVariable, nil},
Include("general"),
{`[0-9]+`, LiteralNumber, nil},
{`[-=!+*/()\[\]]`, Operator, nil},
{`[^=!+*/()\[\]\\$%&_^{}0-9-]+`, NameBuiltin, nil},
},
"inlinemath": {
{`\\\)`, LiteralString, Pop(1)},
{`\$`, LiteralString, Pop(1)},
Include("math"),
},
"displaymath": {
{`\\\]`, LiteralString, Pop(1)},
{`\$\$`, LiteralString, Pop(1)},
{`\$`, NameBuiltin, nil},
Include("math"),
},
"command": {
{`\[.*?\]`, NameAttribute, nil},
{`\*`, Keyword, nil},
Default(Pop(1)),
},
},
))
|