Add vendor files for go build

vendor/github.com/alecthomas/chroma/lexers/s/snobol.go

@@ -0,0 +1,48 @@
+package s
+
+import (
+	. "github.com/alecthomas/chroma" // nolint
+	"github.com/alecthomas/chroma/lexers/internal"
+)
+
+// Snobol lexer.
+var Snobol = internal.Register(MustNewLexer(
+	&Config{
+		Name:      "Snobol",
+		Aliases:   []string{"snobol"},
+		Filenames: []string{"*.snobol"},
+		MimeTypes: []string{"text/x-snobol"},
+	},
+	Rules{
+		"root": {
+			{`\*.*\n`, Comment, nil},
+			{`[+.] `, Punctuation, Push("statement")},
+			{`-.*\n`, Comment, nil},
+			{`END\s*\n`, NameLabel, Push("heredoc")},
+			{`[A-Za-z$][\w$]*`, NameLabel, Push("statement")},
+			{`\s+`, Text, Push("statement")},
+		},
+		"statement": {
+			{`\s*\n`, Text, Pop(1)},
+			{`\s+`, Text, nil},
+			{`(?<=[^\w.])(LT|LE|EQ|NE|GE|GT|INTEGER|IDENT|DIFFER|LGT|SIZE|REPLACE|TRIM|DUPL|REMDR|DATE|TIME|EVAL|APPLY|OPSYN|LOAD|UNLOAD|LEN|SPAN|BREAK|ANY|NOTANY|TAB|RTAB|REM|POS|RPOS|FAIL|FENCE|ABORT|ARB|ARBNO|BAL|SUCCEED|INPUT|OUTPUT|TERMINAL)(?=[^\w.])`, NameBuiltin, nil},
+			{`[A-Za-z][\w.]*`, Name, nil},
+			{`\*\*|[?$.!%*/#+\-@|&\\=]`, Operator, nil},
+			{`"[^"]*"`, LiteralString, nil},
+			{`'[^']*'`, LiteralString, nil},
+			{`[0-9]+(?=[^.EeDd])`, LiteralNumberInteger, nil},
+			{`[0-9]+(\.[0-9]*)?([EDed][-+]?[0-9]+)?`, LiteralNumberFloat, nil},
+			{`:`, Punctuation, Push("goto")},
+			{`[()<>,;]`, Punctuation, nil},
+		},
+		"goto": {
+			{`\s*\n`, Text, Pop(2)},
+			{`\s+`, Text, nil},
+			{`F|S`, Keyword, nil},
+			{`(\()([A-Za-z][\w.]*)(\))`, ByGroups(Punctuation, NameLabel, Punctuation), nil},
+		},
+		"heredoc": {
+			{`.*\n`, LiteralStringHeredoc, nil},
+		},
+	},
+))