[File] A few questions regarding the actual semantic of "magic" rules

[Marco Antoniotti]

Hi

just checking...  Anybody cares to enlighten me about the issues of my
previous email?

Thanks

Marco


On Mon, Jun 3, 2024 at 11:30 AM Marco Antoniotti <marcoxa at gmail.com> wrote:

> Hi
>
> Thank you for supporting this tool for so many years.
>
> I have a few questions regarding the actual semantics of magic(5) rules.
>
> Let me call "group" a set of tests starting at a 0 level test.
>
>    1. My understanding is that each group is checked separately and that,
>    once one of them "succeeds" then the result is printed out and that's it.
>    I am saying this otherwise the "pdf" specification should print out two
>    equal lines on a vanilla PDF file.  Is that correct?
>    2. I understood that "name" and "use" rules can span magic(5)
>    boundaries.  Is that correct?
>    3. When I use a "use" clause, what is the state of the position in the
>    file (buffer) after its invocation?  Whether it is successful or not?
>    4. Can I "use" a "name" that then uses another "name" etc.  It does
>    not appear to be the case on Mac OS right now.
>
> I also believe I found a few problems with some of the magic(5) files; I
> will post them soon.
>
> That's it for now.
>
> Thanks
>
> Marco
>
> PS  Yes, I am parsing the magic(5) files.  Don't ask!  It's a rabbit hole.
>
> --
> Marco Antoniotti
> Somewhere over the Rainbow
>


-- 
Marco Antoniotti
Somewhere over the Rainbow
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