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I'm converting a Latex document with Tex4ebook (built on tex4ht) and I get the following warning: exec_epub: tidy command seems missing, you should install it in order to make a valid epub file. But where do I install it and what does it do?

Thanks in advance.

Jonathan Schouenborg
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1 Answers1

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tex4ebook uses HTML Tidy for clean-up of the generated XML files that can contain some issues resulting from the conversion process. If tex4ebook cannot find Tidy, it will use regular expressions for the clean-up. It is usually enough for production of the valid Epub file, so you don't really need to worry about the warning, as long as the generated file is valid.

michal.h21
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