Error when --strip is applied to an already stripped mp3 file

[rstemmer]

Error when --strip is applied to an already stripped mp3 file

Reproduce:

base64 --decode > ./test.mp3 << EOF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id3edit --strip ./test.mp3

Error:

ID: '' (FFFB94) not supported!
ID3V2_Open failed with error -2!

id3edit should just exit with error code 0 because the file is in a state the user wants it to be.

[rstemmer]

I added this situation to the test-script.
The solution is a bit difficult because of bad code. The function ID3V2_Open does more than just opening the file. It reads it and checks the ID3v2 Tag.

I need to split it the following way:

1. Open file and check if ID3v2 Tag exists
2. If not:
   2.1. Create one if --create is given
   2.2. Exit with success if --strip is given
   2.3. Exit with error
3. Continue reading the rest of the file