Extra \n in unterminated `aic` command at EOF

[aureliojargas]

$ cat x.sed 
3i\
foo\
$ sedparse -f x.sed 
[
    {
        "a1": {
            "addr_number": 3,
            "addr_type": 3
        },
        "cmd": "i",
        "line": 1,
        "x": {
            "cmd_txt": {
                "text": [
                    "f",
                    "o",
                    "o",
                    "\\",
                    "\n",
                    "\n"
                ]
            }
        }
    }
]
$

Note that inside x.cmd_txt.text, there's a double \n when there should be only one.

In the x.sed file, the last line is foo\, which implies there will be a new line to the i command text. But there isn't. Note that for GNU sed, it works the same as if it was a normal foo in the last line:

$ seq 5 | sed -e '3i\' -e 'foo'
1
2
foo
3
4
5
$ seq 5 | sed -e '3i\' -e 'foo\'
1
2
foo
3
4
5
$

sedparse should not return that extra \n in this case.