zip files are read as docx files

[jmripper]

when you parse a zip file it reads as a docx file because they share the same magic number, same with ppx and xlsx. is there a way to identify them individually?

thanks!

[basedwon]

@jmripper it looks like I can do that but I'll have to add an async method. I've wanted to refactor it anyway, so I'll add this feature.