4 ms·

AFAIK docx as produced by Word doesn't even comply with the standard.

• tzs 7y ago
  It's a superset of the standard. Word uses some features that were in the standard that was first proposed but did not pass, like OLE serialization.
  • paulryanrogers 7y ago
    Strange that they can call it a standard yet continue to include non-agreed-upon extensions. At some point it becomes false advertising, unless they fork it under a new MIME type
    • sokoloff 7y ago
      I believe a company has a right to support backwards compatibility for file formats. If they propose a standard and the outcome of the standards work prevents their supporting backwards compatibility (in both directions), I’d rather they support their customers (and their data/files), document their extension use, even at the expense of pure standards implementations not being able to read those files.
• aitchnyu 7y ago
  When I had a project to render docx files, I had to refer the ECMA pdfs which were tens of thousands of pages long and use that only to supplement reverse engineering Word documents. I also remember something hardly decclarative: if a picture was angled, I had to calculate the container boundaries and store it redundantly in the container.