That is strange. So Calibre wants to % encode the & in the filenames in manifest href urls too. That is the spec.
So perhaps a conversion or plugin in calibre from another format generates these broken manifest entries?
Either way, this is not a Sigil bug. If desired the user can unzip the broken epub and use Add Existing to add in the xhtml files, images and css to properly create an epub with a working opf.
But the right way to maximize compatibility with epub readers it to not use reserved chars inside filenames in the first place.
Last edited by KevinH; 03-20-2021 at 06:57 PM.
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