support multiple commands in sesh

sesh/vendor/github.com/goccy/go-yaml/lexer/lexer.go

@@ -0,0 +1,23 @@
+package lexer
+
+import (
+	"io"
+
+	"github.com/goccy/go-yaml/scanner"
+	"github.com/goccy/go-yaml/token"
+)
+
+// Tokenize split to token instances from string
+func Tokenize(src string) token.Tokens {
+	var s scanner.Scanner
+	s.Init(src)
+	var tokens token.Tokens
+	for {
+		subTokens, err := s.Scan()
+		if err == io.EOF {
+			break
+		}
+		tokens.Add(subTokens...)
+	}
+	return tokens
+}