[Libreoffice-bugs] [Bug 118405] New: Export as PDF from Greek, using TexGyre fonts

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

Bug ID: 118405
Summary: Export as PDF from Greek, using TexGyre fonts
Product: LibreOffice
Version: 6.0.3.2 release
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: Writer
Assignee: libreoffice-***@lists.freedesktop.org
Reporter: ***@jessesteele.net

Description:
Some fonts in other languages don't render correctly in pdf.

I created a repo with a fully-reproduced problem, example files, and in-depth
description here:
https://github.com/JesseSteele/pdf-bug

Steps to Reproduce:
1. Open "Problem example.odt" in Writer
2. Click the icon "Export as PDF"
3. Look in the file and see problems with Greek word spaces on pages 3-4

Actual Results:
Greek words have unexpected spaces using the TexGyre Pagella font, but not the
standard Roman font. The unexpected spaces even push letters OUTSIDE the
margins, but the words should at least wrap. Seems double trouble to me.

Expected Results:
Greek words should not have unexpected spaces.


Reproducible: Always


User Profile Reset: No



Additional Info:
Exporting this to PDF in Calligra Words (using 'custom size' paper) does not
have this problem. Perhaps Calligra is on to something and "doing it
correctly". (This is how I solved the problem and published on Amazon print on
demand.)

But, as the repo explains, Calligra messes up pages when exporting from .doc.
LibreOffice produces identical results in Export to PDF, from both .odt and
.doc, thanks for the consistency guys, really!

I also had the same problem using lowriter in the terminal.

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

Julien Nabet <***@yahoo.fr> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@yahoo.fr

--- Comment #1 from Julien Nabet <***@yahoo.fr> ---
On which env are you?

Could you give a try to last stable LO version 6.0.5?

If it doesn't work, it could be interesting, just for the test, to know if the
bug is still reproduceable on a daily build from master branch (see
https://dev-builds.libreoffice.org/daily/master/Win-***@42/current/).

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

--- Comment #2 from JesseSteele <***@jessesteele.net> ---
Yo, Julien,

I'm cool, so I'm using Ubuntu 18.04.

I added your repo and tried 6.0.5. Same problem.

I hacked your W!***@w$ link and the .deb package didn't install.

But, just clone or DL the repo and try it yourself, either the .doc or .odt
files and see if you get the spaces after the Greek letters that look like "a"
or "w"...

WRONG:
πολλῶ Îœ

ᜑΎά τωΜ
OR
ᜑ Ύά τωΜ

RIGHT:
πολλῶΜ

ᜑΎάτωΜ

git clone http://github.com/jessesteele/pdf-bug

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

--- Comment #3 from JesseSteele <***@jessesteele.net> ---
You may need TexGyre installed to use real fonts for real publishing...

sudo apt install tex-gyre

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

--- Comment #4 from Julien Nabet <***@yahoo.fr> ---
On pc Debian x86-64 with master sources updated today, I git cloned your repo.

I noticed that LO pdf showed pairs of words in columns, on Calligra pdf it's
not the case.
Then I opened the odt, I saw these same colums.
I exported the file on pdf, same columns too.

I didn't see:
πολλῶ Îœ
ᜑΎά τωΜ
OR
ᜑ Ύά τωΜ

I suppose I missed something but don't know what.

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

--- Comment #5 from JesseSteele <***@jessesteele.net> ---
The "columns" are a product of "justify text". In Pagella, each line ends with
a different word.

Look on PDF page 9 (labeled page 1)

You will see the little "v" thing by itself. It's not supposed to be. It's been
pushed out into the margin where it shouldn't be able to be.

The u da twv should be all one word.

Looking down at PDF pages 10-11 (labeled 2-3) the Greek letters are grouped as
all one word as they should be.

You can see this in the file I put in the GitHub repo.

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

Julien Nabet <***@yahoo.fr> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@collabora.co.uk

--- Comment #6 from Julien Nabet <***@yahoo.fr> ---
On "Problem example DOC - via LibreOffice.pdf", 9th page of pdf, I see:
hudatoen/ ᜑ ΎάάτωΜ

whereas in "Problem example DOC - via Calligra.pdf", I see:
hudatoen/ᜑΎάτωΜ

Ok so Calligra seems ok, not LO.

Strangely, I've opened "Problem example.doc" with 6.0.5.2 LO Debian (testing)
package and exported it, I got:
hudatoen/ ᜑ ΎάτωΜ (from copy paste)
but I see:
hudatoen/ᜑΎάτωΜ
as if the copy paste would add some spaces.

I noticed on Evince that when highlighting "ᜑΎάτωΜ", "ά" was replaced by a
square only on LO PDF export.

In brief, I don't reproduce exactly what you describe but I got a pb too.

Miklos: thought you might be interested in this one since it concerns PDF
export unless it's more about fonts rendering, in that case, Khaled may help
here?

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

--- Comment #7 from JesseSteele <***@jessesteele.net> ---
Yeah! Julien, you are seeing it, and the other problems.

I can explain. I studied Greek in college and I get the font...

Those accent mark things above and under the letters are rendered by fonts
similarly to how "ff" might be a single character. I don't know base-language
level font encoding, but UTF-8 might regard ᜑ or ά as actually two separate
characters, like combo letters in creating fonts.

Dealing with that "correctly" is probably where the problem begins.

Summary:

TexGyre might not do their fonts "correctly", but that Roman default font does.

Calligra got TexGyre to render correctly... BUT, Amazon's print on demand says
the Calligra .pdf file is broken...

(Calligra rant: in Calligra, .doc > .pdf, it messed up the page numbers; .odt >
.pdf Calligra was great, but Amazon said it was broken or someth. So, not even
Calligra is perfect in this.)

That's what I know.

Cheers and kudos all!

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

--- Comment #8 from JesseSteele <***@jessesteele.net> ---
For what it's worth, I've had problems with ghostscript processing .pdf files
to get CMYK working correctly. Scribus won't import the same files it could
before. Command line gs makes a .pdf blank. These don't work:

http://wiki.inkscape.org/wiki/index.php/ExportPDFCMYK
http://zeroset.mnim.org/2014/07/14/save-a-pdf-to-cmyk-with-inkscape/

...Just in case you're using ghostscript and it's giving everyone problems. :-)

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

Buovjaga <***@suomi24.fi> changed:

What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Component|Writer |Printing and PDF export
Summary|Export as PDF from Greek, |Export as PDF shows gaps in
|using TexGyre fonts |Greek words when using
| |TexGyre fonts
Status|UNCONFIRMED |NEW

--- Comment #9 from Buovjaga <***@suomi24.fi> ---
NEW as Julien's confirmation was confirmed.

[b***@bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=118405

Roman Kuznetsov <***@mail.ru> changed:

What |Removed |Added
----------------------------------------------------------------------------
Keywords| |filter:pdf
Blocks| |103378


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=103378
[Bug 103378] [META] PDF export bugs and enhancements