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[bug #66114] [gropdf] support embedding bit-mapped image files into a PD


From: G. Branden Robinson
Subject: [bug #66114] [gropdf] support embedding bit-mapped image files into a PDF
Date: Wed, 21 Aug 2024 00:28:56 -0400 (EDT)

Follow-up Comment #9, bug #66114 (group groff):

[comment #5 comment #5:]
> Please feel free to improve my documentation (and coding style) :-)

Sure thing.  Outside of gropdf.pl I strongly prefer to enforce the
72-character line length limit, so some \newlines may be arriving in
"pdfpic.tmac" soon.

> We need to think about what to put into the NEWS file for all the new pdf
features

I was expecting to base items on what you put together in that
busgrap-generated PDF you first shared last year I think.

There may however be more to say.
 
> The only place \X'pdf: pdfpic’ is exercised in our documentation is in the
mom examples (typesetting.pdf), but mom does not use .PDFPIC.

That's okay.  I think device control escape sequences are little used because
historically they have been hard to understand, and they also have had weird
and frustrating limitations.
 
> I replaced the sed pipeline with a perl statement, the thinking is that if
the target architecture runs gropdf it must have a perl available and the
statement I used should work on all versions of perl5.

Thanks for being version-conscious.  I learned a lot of things about portable
_sed_(1) programming that I wish I'd never had to know.  I wrote part of our
"HACKING" file in the blood I spilled from those experiences.

> What I'm less sure about is whether different versions of the programs file,
identify and pdfinfo produce output which is matched with the regex, it may
require tweaking.

It's a hazard.  I guess we'll find out!  :-O


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