Encoded characters in decoded output

[thekirankumar]

@mike42 I'm using your library to decode the ESC/POS printer windows spool file. It works well for most inputs.
I came across one binary file which causes output of garbled characters like this. I verified that it contains ESC/POS commands, its just that the text output is garbled.

The windows spool file was generated by a thermal receipt printer while printing a grocery bill at a supermarket.

Here's the zipped binary causing the issue, looking forward for a suggestion to get usable text output.