Nbconvert: Latex to PDF conversion fails on notebooks with accented letters

[dpsanders]

In Spanish (for example), it is often necessary to include accented letters in notebook titles for grammatical correctness.

However, creating a notebook with the title "Análisis", for example (the first word of the title I was trying to use) fails in the conversion to PDF stage; this is apparently a Unicode problem in pdflatex (the LaTeX output is produced without problems):

012/texmf-dist/tex/latex/ucs/ucsencs.def)

Package ucs Warning: ***************************
(ucs)                You seem to have loaded inputencoding utf8
(ucs)                (LaTeX kernel UTF-8) instead of utf8x (ucs.sty UTF-8).
(ucs)                Probably you are compiling a document written for a
(ucs)                pre-august-2004 ucs.sty.
(ucs)                ***************************
(ucs)                Please use \usepackage[utf8x]{inputenc} instead of
(ucs)                \usepackage[utf8]{inputenc}.
(ucs)                ***************************
(ucs)                If you should really want to use ucs.sty and kernel's
(ucs)                utf8.def together, use \usepackage[utf8x,utf8]{inputenc}
(ucs)                to disable compatibility mode
(ucs)                ***************************
(ucs)                Activating compatibility mode.
(ucs)                ***************************
(ucs)                 on input line 218.

(/usr/local/texlive/2012/texmf-dist/tex/latex/ucs/utf8x.def)
(/usr/local/texlive/2012/texmf-dist/tex/latex/hyperref/nameref.sty
(/usr/local/texlive/2012/texmf-dist/tex/generic/oberdiek/gettitlestring.sty))
(./Análisis.out) (./Análisis.out)
(/usr/local/texlive/2012/texmf-dist/tex/latex/ucs/data/uni-3.def)

! Package ucs Error: Please activate option 'combine'.

See the ucs package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              

l.222 

[jakobgager]

Have you tried using utf8x instead of utf8 and the option combine as suggested by this latex error?

[dpsanders]

Hi Jakob,
Yes, it gives the following new error.

If I ignore the errors with 'r' in pdflatex, I get the title as
Ana'lisis (i.e. the accent is not correctly placed over the a).

! LaTeX Error: Option clash for package ucs.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              

l.26     \usepackage
                    {fancyvrb} % verbatim replacement that allows latex

[jakobgager]

OK, if I create a notebook named Latex_test_Análisis.ipynb with a heading cell like Análisis über it converts fine to .tex and this compiles without issues to pdf (using default options - no manual modification of the tex file).

If I use the --post=pdf option, I get an error, hence seems to be a unicode bug in the pdf postprocessor.
Is this the error you are facing?

[marcmolla]

Hi,

I have the same problem with the accents in the notebook name. I created an empty notebook named Test_Análisis.ipynb and I tried to convert it by using ipython nbconvert .\Test_Análisis.ipynb. The result is the following error:

PS C:\Users\IPython notebooks> ipython nbconvert .\Test_Análisis.ipyn
b
Traceback (most recent call last):
  File "C:\Anaconda\Scripts\ipython-script.py", line 5, in <module>
    sys.exit(start_ipython())
  File "C:\Anaconda\lib\site-packages\IPython\__init__.py", line 118, in start_ipython
    return launch_new_instance(argv=argv, **kwargs)
  File "C:\Anaconda\lib\site-packages\IPython\config\application.py", line 544, in launch_instance
    app.initialize(argv)
  File "<string>", line 2, in initialize
  File "C:\Anaconda\lib\site-packages\IPython\config\application.py", line 89, in catch_config_error
    return method(app, *args, **kwargs)
  File "C:\Anaconda\lib\site-packages\IPython\terminal\ipapp.py", line 312, in initialize
    super(TerminalIPythonApp, self).initialize(argv)
  File "<string>", line 2, in initialize
  File "C:\Anaconda\lib\site-packages\IPython\config\application.py", line 89, in catch_config_error
    return method(app, *args, **kwargs)
  File "C:\Anaconda\lib\site-packages\IPython\core\application.py", line 362, in initialize
    self.parse_command_line(argv)
  File "C:\Anaconda\lib\site-packages\IPython\terminal\ipapp.py", line 307, in parse_command_line
    return super(TerminalIPythonApp, self).parse_command_line(argv)
  File "<string>", line 2, in parse_command_line
  File "C:\Anaconda\lib\site-packages\IPython\config\application.py", line 89, in catch_config_error
    return method(app, *args, **kwargs)
  File "C:\Anaconda\lib\site-packages\IPython\config\application.py", line 463, in parse_command_line
    self.argv = list(argv)
  File "C:\Anaconda\lib\site-packages\IPython\utils\traitlets.py", line 315, in __set__
    new_value = self._validate(obj, value)
  File "C:\Anaconda\lib\site-packages\IPython\utils\traitlets.py", line 323, in _validate
    return self.validate(obj, value)
  File "C:\Anaconda\lib\site-packages\IPython\utils\traitlets.py", line 1215, in validate
    value = self.validate_elements(obj, value)
  File "C:\Anaconda\lib\site-packages\IPython\utils\traitlets.py", line 1291, in validate_elements
    return super(List, self).validate_elements(obj, value)
  File "C:\Anaconda\lib\site-packages\IPython\utils\traitlets.py", line 1225, in validate_elements
    v = self._trait.validate(obj, v)
  File "C:\Anaconda\lib\site-packages\IPython\utils\traitlets.py", line 1028, in validate
    return unicode(value)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe1 in position 9: ordinal not in range(128)

I am working on a 64-bits windows 7 machine with the following versions:

PS C:\Users\IPython notebooks> ipython --version
1.1.0

PS C:\Users\IPython notebooks> python --version
Python 2.7.5 :: Anaconda 1.7.0 (64-bit)

[marcmolla]

Also confirmed in a Ubuntu machine. It seems that the program is reading the arguments of command-line in str, without taking into account the stdin encoding.

[marcmolla]

My issue is solved in ipython 2.0.0 (master branch)

[minrk]

Thanks @marcmolla, closing then.