Leonard Rosenthol

@pesco I would note that some of these conversations would be more productive if you would consider joining the PDF Association and participating in the meetings, where we discuss and...

Well, ``` 10 0 obj /d /e /f endobj ``` is not valid PDF syntax for PDF object. If you instead had, ``` 10 0 obj [/d /e /f ]...

Seems pretty clear to me with 7.3.10 (32K-2) ``` Any object in a PDF file may be labelled as an indirect object. This gives the object a unique object identifier...

As noted in some other issues - you @pesco are trying to intermix parsing & tokenization with object referencing. PDF doesn't work that way - those things are completely separate...

Agree with @mkl-public - don't touch this!

There are also scenarios where cycles are permitted and logical *but* implementers forget to address that particular scenario in that implementation (walking dictionaries with `/Parent` or `/P` keys being the...

> Is the degenerate case of an object defined completely as itself also valid? Do you mean just a simple direct object, such as `1` or `(foo)`? or an indirect...

@pesco - I haven't validated this as such, but I would consider your example below as invalid ``` 8 0 obj 8 0 R endobj ``` Not because it refers...

>Your second example (an acyclic chain of references), however, is quite explicitly allowed by one of the statements Peter quoted earlier ("PDF syntax thus permits chains of [object references]"). It's...

OK - I put together a quick sample file (attached) and tried a few known implementations. - Acrobat (desktop, mobile and web and any other product based on our PDF...