[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

V Stuart Foote  changed:

   What|Removed |Added

 CC||vmik...@collabora.com

--- Comment #10 from V Stuart Foote  ---
A search of the Adobe forums, or Google, for the string "Cannot extract the
embedded font" will show this is a long running issue with Acrobat with
multiple PDF generators, including multiple Adobe products. Adobe has patched
Acrobat/Reader for embedded font issues--composite characters for example.

IMHO Adobe is risk adverse regards font licensing so it is conservative with
handling font embedding in PDF, believe their filters are overly sensitive when
reading PDF compared to other viewers.

LibreOffice has reworked its PDF generator compared to earlier OpenOffice
derivatives, so do not expect similar behavior there.

Will poke at this some more, and if it is specific to a block of Unicode
glyphs, like "General Punctuation" holding NNBS, for specific font
producers--could require an issue opened with Adobe. Or for in this case with
Redhat for a rebuild of the bundled Liberation fonts.

@Miklos, any thought on a direction for this specific bug?

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[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

--- Comment #9 from Cristian Secară  ---
As mentioned on my question on ask.libreoffice.org [1], when using OpenOffice
to generate the .pdf from same .odt file, the resulted file no longer shows an
error in AAR DC. So,  are you sure about "NotOurBug" ?

Here are both versions for comparison:
https://www.secarica.ro/test/libo_nnbsp.pdf
https://www.secarica.ro/test/opno_nnbsp.pdf
(and source
https://www.secarica.ro/test/libo_nnbsp.odt)

[1]
https://ask.libreoffice.org/en/question/190046/exported-pdf-gives-liberationserif-font-error-in-adobe-acrobat-reader/

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[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

V Stuart Foote  changed:

   What|Removed |Added

 CC||vstuart.fo...@utsa.edu

--- Comment #8 from V Stuart Foote  ---
Confirmed on Windows 10 Ent 64-bit en-US (1803) with
Version: 6.3.0.0.alpha0+ (x64)
Build ID: 74ed80b5744fdfacf9b9c3ef8ab235c64510c20d
CPU threads: 8; OS: Windows 10.0; UI render: GL; VCL: win; 
TinderBox: Win-x86_64@42, Branch:master, Time: 2019-04-11_04:13:57
Locale: en-US (en_US); UI-Language: en-US
Calc: CL

and Adobe Acrobat CC 2019.008.20080

I created a Writer document with Liberation Sans, holding the text: 
"Text with U+202F entered:  right there." and Export it to PDF.

On initial opening of the exported PDF, Acrobat reports:

"Cannot extract the embedded font 'BA+LiberationSans'. Some characters may
not display or print correctly."

Uncompressing the PDF, for the stream "Text with U+202F entered:  right there."
shows the NBS is handled in the runs. And the font seems well described, and
the BT -> ET runs look correct. In the clip following the second run holding
Tf<12>Tj, is the NBS.

BT
56.8 724 Td /F1 12
Tf[<01>110<02>-1<0304>2<05>2<06>-2<07>-2<04>2<08>-1<05>2<09>-2<0A>8<0B>-1<0C>-1<0B>-1<0D>2<05>-5<02>6<0E>-1<04>2<02>-1<0F02>-1<10>-1<11>2<05>]TJ
ET
Q
q 0 0 0 rg
BT
200.6 724 Td /F1 12 Tf<12>Tj
ET
Q
q 0 0 0 rg
BT
203 724 Td /F1 12
Tf[<0F07>-2<13>6<08>-1<04>-5<05>2<04>2<08>-1<02>-1<0F02>-1<14>]TJ
ET
Q
Q endstream
endobj
6 0 obj
<< /Font 7 0 R /ProcSet [ /PDF /Text ] >>
endobj
7 0 obj
<< /F1 8 0 R >>
endobj
8 0 obj
<< /BaseFont /BA+LiberationSans /FirstChar 0 /FontDescriptor 9 0 R
/LastChar 20 /Subtype /TrueType /ToUnicode 10 0 R /Type /Font /Widths [ 750 610
556 500 277 277 722 222 556 722 583 556 556 610 556 333 556 277 200 556 277 ]
>>
endobj
9 0 obj
<< /Ascent 905 /CapHeight 979 /Descent -211 /Flags 4 /FontBBox [ -543 -303 1301
980 ] /FontFile2 11 0 R /FontName /BA+LiberationSans /ItalicAngle 0 /StemV
80 /Type /FontDescriptor >>
endobj
10 0 obj
<< /Length 558 >>
stream
/CIDInit/ProcSet findresource begin
12 dict begin
begincmap
/CIDSystemInfo<<
/Registry (Adobe)
/Ordering (UCS)
/Supplement 0
>> def
/CMapName/Adobe-Identity-UCS def
/CMapType 2 def
1 begincodespacerange
<00> 
endcodespacerange
20 beginbfchar
<01> <0054>
<02> <0065>
<03> <0078>
<04> <0074>
<05> <0020>
<06> <0077>
<07> <0069>
<08> <0068>
<09> <0055>
<0A> <002B>
<0B> <0032>
<0C> <0030>
<0D> <0046>
<0E> <006E>
<0F> <0072>
<10> <0064>
<11> <003A>
<12> <202F>
<13> <0067>
<14> <002E>
endbfchar
endcmap
CMapName currentdict /CMap defineresource pop
end
end
endstream
endobj


Repeating steps but without the U+202F used does not error when opening in
Acrobat.

Looking at the font, the glyph #2037 uni202F is defined--but of course as a
space has no graphical feature.

So, flip a coin if this is issue with font or an issue with Acrobat too
sensitive to a single glyph.  Either way I'd lean toward NotOurBug.

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[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

Buovjaga  changed:

   What|Removed |Added

 Status|NEEDINFO|NEW
 Blocks|71732   |

--- Comment #7 from Buovjaga  ---
New per comment 4


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=71732
[Bug 71732] [META] Bugs related to text rendering, typography and font features
in LO
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[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

--- Comment #6 from Uwe Auer  ---
Created attachment 150703
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150703=edit
PDF - CUPS-PDF print/export of ODT - with U+202F

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[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

--- Comment #5 from Uwe Auer  ---
Created attachment 150702
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150702=edit
ODT - without U+202F

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[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

--- Comment #4 from Uwe Auer  ---
Due to a question at ask.libreoffice.org (see
https://ask.libreoffice.org/en/question/190046/exported-pdf-gives-liberationserif-font-error-in-adobe-acrobat-reader/)
I've made the following test.

1) Create one document containing a single U+202F code (Liberation Sans)
2) Create one document containing no U+202F code with almost the same text
3) Create an PDF Export for each .odt fikle using LibreOffice's PDF Export
function 
4) Open both using Adobe Acrobat Reader DC 2018.010.20099 on Windows 10 Pro
1809.17763.437

Result 1 - File containig U+202F
Result is confirming reporter system. I do get the same message, when clicking
onto the text in Acrobat Reader. Please note: Other ODF Readers may not report
the error / warning, while using other creators like cups-pdf won't produce the
error when opening the PDF with Adobe Reader.

Result 2 - File *not* containig U+202F
No error / warning in Acrobat Reader reported.

PDF creation done with:
Version: 6.2.2.2
Build ID: 2b840030fec2aae0fd2658d8d4f9548af4e3518d
CPU threads: 8; OS: Linux 4.12; UI render: default; VCL: kde5; 
Locale: en-GB (en_GB); UI-Language: en-US
Calc: threaded

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[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

--- Comment #3 from Uwe Auer  ---
Created attachment 150701
  --> https://bugs.documentfoundation.org/attachment.cgi?id=150701=edit
ODT - with U+202F

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[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

Xisco Faulí  changed:

   What|Removed |Added

 CC||xiscofa...@libreoffice.org
 Ever confirmed|0   |1
 Status|UNCONFIRMED |NEEDINFO

--- Comment #2 from Xisco Faulí  ---
Could you please try to reproduce it with the latest version of LibreOffice
from https://www.libreoffice.org/download/libreoffice-fresh/ ?
I have set the bug's status to 'NEEDINFO'. Please change it back to
'UNCONFIRMED' if the bug is still present in the latest version.

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[Libreoffice-bugs] [Bug 112152] Narrow No-Break Space causes PDF Error by using Font Liberation Serif

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=112152

Buovjaga  changed:

   What|Removed |Added

 CC||todven...@suomi24.fi

--- Comment #1 from Buovjaga  ---
Created attachment 136136
  --> https://bugs.documentfoundation.org/attachment.cgi?id=136136=edit
Document with narrow no-break space

I don't see any problems with PDF export.

Arch Linux 64-bit, KDE Plasma 5
Version: 6.0.0.0.alpha0+
Build ID: a27eb931c22313d4dd5c73b35358c0532d20b79e
CPU threads: 8; OS: Linux 4.12; UI render: default; VCL: kde4; 
Locale: fi-FI (fi_FI.UTF-8); Calc: group
Built on September 8th 2017

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