[NTG-pdftex] [pdftex-Bugs][4321] Illegal entry in bfrange block in ToUnicode CMap

[pdftex-bugs at sarovar.org]

Bugs item #4321, was opened at 2010-11-25 14:21
Status: Open
Priority: 3
Submitted By: Heiko Oberdiek (oberdiek)
Assigned to: Nobody (None)
Summary: Illegal entry in bfrange block in ToUnicode CMap 
Category: None
Group: None
>Resolution: Accepted


Initial Comment:
Hello,

pdfTeX complains
  Error: Illegal entry in bfrange block in ToUnicode CMap
for valid cmap entries, when a PDF file is included.
The CMap entries are, for example:

1 beginbfrange
<0041><0041><0041>
endbfrange

The error disappears in case of

1 beginbfrange
<41><41><0041>
endbfrange

The error is in function CharCodeToUnicode::parseCMap1 in file
libs/xpdf-3.02/xpdf/CharCodeToUnicode.cc

In case of poppler the problem is already reported with patch:

http://lists.freedesktop.org/archives/poppler-bugs/2010-April/004931.html

The appended test file can be processed by "pdftex --ini", "pdftex" or
"pdflatex".

Yours sincerely
  Heiko

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>Comment By: The Thanh Han (hanthethanh)
Date: 2010-11-26 02:32

Message:
we would apply the mentioned patch from poppler.

Regards the case

<0041><0041><0042>

it works fine with Preview (osx) and acrobat 9, so I think it's a browser
issue.


Thanh


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Comment By: Heiko Oberdiek (oberdiek)
Date: 2010-11-25 14:48

Message:
Hello,

I have made further experiments by
replacing the last <0041> by <0042>.
The "A" of the input file should then get
converted to "B" by copy&paste.
This works for the line
  <41><41><0042>
with AR7/Linux,
however it fails ("A" instead of "B") in case
of
  <0041><0041><0042>
The PDF specification shows in section
"5.9 Extraction of Text Content" entries
with four hexadecimal digits.

Can someone bring some light to this obscurity?

Yours sincerely
  Heiko

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