Some time now Mp3Tag introduced the [Include]=... command.
One example is official Discogs.src.
[SearchBy]=Album||%album%||&release_title=%s
[Include]=Discogs.inc
So, I build a long myInclude.inc file intended to be reused in many WS and added it to each src file ([Include]=myInclude.inc).
It did not work.
Some people would expect [Include]=file.inc command would act as copy/pasting the file.inc content in the main WS src file.
[ParserScriptIndex]=...
#
... code ...
[Include]=Include1.inc
... more code ...
[Include]=Include2.inc
... even more code ...
[Include]=Include3.inc
... other code...
[ParserScriptAlbum]=...
... code ...
[Include]=Include4.inc
... more code ...
[Include]=Include5.inc
... even more code ...
[Include]=Include6.inc
... other code...
I am not blaming existing feature, just probably have wrong expectation.