#750648 Search does not work for non-standard encoding

Package:
qpdfview
Source:
qpdfview
Description:
tabbed document viewer
Submitter:
YK
Date:
2022-01-17 19:15:08 UTC
Severity:
normal
#750648#5
Date:
2014-06-05 11:43:49 UTC
From:
To:
Hello!

Sorry my bad English

Search the document does not work. Maybe because the document in Russian?
#750648#10
Date:
2014-06-06 02:36:45 UTC
From:
To:
Yes, search does not work only in Russian PDF`s.
#750648#15
Date:
2014-06-11 15:11:51 UTC
From:
To:
Hi Yoric, thank you for taking the time to report and investigate this
problem. If you could answer the following questions, it would probably
help tracking down its cause:

1. Does the search not work in all of your russian PDFs?

2. In those PDFs where search does not work, can you copy text from the
PDF and paste it to a text file? (If this does not work, the text may
actually be part of an image and not properly embedded as text in the PDF.)

3. Could you provide an example file, for which the problem occurs?

Best wishes, Benjamin
#750648#20
Date:
2014-06-11 17:53:17 UTC
From:
To:
Hi Yoric,

to copy text, you can hold shift and drag a frame. When you release the
mouse button, a pop-up menu will give you the option to copy the text in
that area. (Unfortunately, qpdfview does not yet support line-wise
marking and copying of text, because the corresponding feature is not
yet present in the Poppler library and the developer of qpdfview does
not want to implement it from scratch, but this should be supported with
the next version of Poppler.)

4. Could you check if you can copy text from the PDF file, for which the
search does not work?

5. Have you tried the search in okular or evince?

6. Does text search work with English djvu files?

Thank you for taking the time for this further investigation. I hope it
will help narrow down the problem.

Best, Benjamin
#750648#25
Date:
2014-06-11 19:50:46 UTC
From:
To:
Hi Benjamin

4) Copied blank space

5) No, epdfview search works

6) Also no
#750648#30
Date:
2014-06-14 10:42:39 UTC
From:
To:
Hi,

I forwarded the bug to the upstream bug tracker:

https://bugs.launchpad.net/qpdfview/+bug/1328946

As far as the maintainer can tell, this seems to be a limitation of the
Poppler PDF library. (Your djvu files might actually not have text
embedded in them but only consist of images, in which case the search
cannot be expected to work.)

I have no idea why for at least one file the search works in epdfview
but not qpdfview, because they both use the Poppler library and for the
PDF file you sent me, even pdftotext seems to produce garbled output.
Are you using epdfview on the same system as qpdfview? If you use it on
another system, does the other system have another version of Poppler?

Best, Benjamin
#750648#35
Date:
2014-06-14 13:50:56 UTC
From:
To:
Hi

 BE> Are you using epdfview on the same system as qpdfview?

Yes, at one and the same system