Branch
'a'
'a'B
'\''
'\\'
'\231'
'\x41'
'\u0041'
'\U0001F47D'
----------------------------------------------------
[
["char", "'a'"],
["char", "'a'B"],
["char", "'\\''"],
["char", "'\\\\'"],
["char", "'\\231'"],
["char", "'\\x41'"],
["char", "'\\u0041'"],
["char", "'\\U0001F47D'"]
]