> Any ideas on what makes a particular PDF more likely to display such
behavior?
I've come across the problem with scanned PDFs as well as with LaTeX
generated PDFs.
When I would modify them in Preview (e.g., deleting a page, rearranging
pages, extracting pages, etc.) then the character mapping would get lost
and there is no way to recover from that (other than regenerating the
PDF). That's why I only use Acrobat if I have to edit PDFs (although it
sucks, because all the drag and drop functions in Preview are much easier).
On Thu, May 21, 2015 at 6:43 AM, Josh Carney <joshcar...@hotmail.com> wrote:
> Thanks for your reply, Jan.
>
> When I wrote "unsearchable" I was simply referring to the interface
> practice that I use most frequently in dealing with such PDFs. That is,
> using the command+f option to search for a particular sequence of
> characters, or in the case of DevonThink, searching the text of the
> document alongside that of others in aggregate form.
>
> As you allude to, the problem is actually greater than this. Though I can
> select and even highlight text in this file for annotation, attempts to
> copy it end up in some sort of strange tab-like space being entered in the
> paste area. This can only be deleted by removing textual elements on either
> side of it. (That is, it can't simply be backed-over and deleted--in such
> attempts, the cursor just won't move.) No characters display in the copied
> "text," just a space that might be about 20 characters (an estimate) long.
>
> If this is a frequent problem with the PDFKit I guess I should count
> myself lucky. Any ideas on what makes a particular PDF more likely to
> display such behavior? (This particular error is very repeatable with this
> particular file.)
>
> Best wishes,
>
> Josh
>
> > From: skim-app-users-requ...@lists.sourceforge.net
> > Subject: Skim-app-users Digest, Vol 96, Issue 15
> > To: skim-app-users@lists.sourceforge.net
> > Date: Thu, 21 May 2015 12:02:11 +0000
> >
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> > Today's Topics:
> >
> > 1. Re: search disables after export save (Jan David Hauck)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Wed, 20 May 2015 10:28:10 -0700
> > From: Jan David Hauck <jan.d.ha...@ucla.edu>
> > Subject: Re: [Skim-app-users] search disables after export save
> > To: For general discussion about using Skim
> > <skim-app-users@lists.sourceforge.net>
> > Message-ID:
> > <CAE4y4F=cjewz4uoh-w-ldtce9x73f0od55ivgtru4k9ojrt...@mail.gmail.com>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > What do you mean by "unsearchable"?
> > Can you select text from the file? Can you copy?
> > If you copy text from the file into a text document, does it display
> > correctly or are the characters scrambled?
> >
> > I've come across the latter when modifying scanned and OCR'ed PDFs in
> > Preview. For some reason PDFKit frequently screws up the character
> mapping
> > of scanned pdfs. This has been a problem for probably a decade now and
> > Apple has been unable to fix it.
> >
> > Jan
> >
> >
> >
> > On Wed, May 20, 2015 at 3:40 AM, Josh Carney <joshcar...@hotmail.com>
> wrote:
> >
> > > Thanks for your reply, Christiaan. In answer to your question, yes,
> that's
> > > just what I meant. In terms of the PDFKit it looks like you're right: I
> > > replicated the issue with Preview and I don't get the issue with
> Acrobat
> > > Pro. I'm very glad to hear this is an exception, though I'm still
> curious
> > > to know if others have experienced a similar problem. I'm wondering if
> > > there's a way to anticipate what PDFs might be prone to this sort of
> > > behavior.
> > >
> > > Josh
> > >
> > > > Hello,
> > > >
> > > > My apologies in advance if this has been covered before. I didn't
> find
> > > it discussed in my forum search under the terms I selected.
> > > >
> > > > I have at least one PDF (an article downloaded from project muse)
> that
> > > becomes unsearchable after I save with the"export - as PDF - with
> embedded
> > > notes" option. That is, after I attempt to shift from Skim format to a
> > > format in which my annotations are available to other PDF
> applications. For
> > > those who might be interested and have access, the article is
> available at
> > > this link:
> > > >
> > >
> https://muse.jhu.edu/journals/journal_of_middle_east_womens_studies/v005/5.2.barzilai-lumbroso.pdf
> > > >
> > > > The issue is repeatable with this item, but is not occurring with
> some
> > > of the other articles I recently worked with. That said, it has me
> > > concerned, as I only became aware of the phenomenon when searching this
> > > particular article. I generally annotate, export as PDF, and store my
> > > articles in the DevonThink Pro Office database, where I often search
> them
> > > in aggregate rather than on an article-by-article basis. So I might not
> > > know if there are other instances of similar behavior.
> > > >
> > > > Is this behavior familiar and, if so, do you have any suggestions for
> > > dealing with it? For the time being I will re-annotate this particular
> PDF
> > > in Acrobat Pro or another program, since I need to have the annotations
> > > visible across a variety of platforms, but I would prefer to stick to
> the
> > > Skim-based workflow that I have.
> > > >
> > > > Thanks in advance for any thoughts you might be able to offer.
> > > >
> > > > Josh
> > >
> > > Do you mean that when you open a file that was exported with embedded
> > > notes it becomes unsearchable? I have not heard about that. But it is
> also
> > > something we cannot do anything about. It's really Apple's problem.
> That is
> > > because the PDF is saved by Apple's PDFKit, which for us is a black
> box, we
> > > have no influence over how that is done, and regularly has problems
> (that's
> > > an important reason why we don't use it by default.) For sure, this
> must be
> > > an exception. Also, it would be true for other PDFKit based apps, like
> > > Preview.
> > >
> > > Christiaan
> > >
> > >
> > >
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