in reply to
Re^2: Using pragma utf8::all in processing non-utf data.
in thread Using pragma utf8::all in processing non-utf data.
As you says, we have to detect it's encode and decode its 'characters' into perl's internal encoding. ":pop" will give you un-encoded $fh. It also makes no sense.
And one more for utf8:all. Please refer its problem in this thread "How can I safely unescape a string.". After all, utf8:all never frees you from encoding troubles.