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[Octave-bug-tracker] [bug #39828] Missing symbols from new TeX interpret


From: Rik
Subject: [Octave-bug-tracker] [bug #39828] Missing symbols from new TeX interpreter
Date: Tue, 20 Aug 2013 22:24:34 +0000
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:23.0) Gecko/20100101 Firefox/23.0

URL:
  <http://savannah.gnu.org/bugs/?39828>

                 Summary: Missing symbols from new TeX interpreter
                 Project: GNU Octave
            Submitted by: rik5
            Submitted on: Tue 20 Aug 2013 03:24:33 PM PDT
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: goffioul
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

The complete list of symbols that the Matlab TeX interpreter accepts is
located here (http://www.mathworks.com/help/matlab/ref/text_props.html) where
you have to click on the down arrow next to "TeX Character Sequence Table".

I ran the list through the new Octave TeX interpreter and found the following
missing symbols.


warning: ignoring unknown symbol: sim
warning: ignoring unknown symbol: angle
warning: ignoring unknown symbol: ast
warning: ignoring unknown symbol: Leftarrow
warning: ignoring unknown symbol: Rightarrow


These two should be easy, just substitute the actual character for the symbol
name.


\sim = '~'
\ast = '*'


The others might be harder.

For the empty set symbol ('\0') I get a Tex Parse Error.


text (0.5, 0.5, '\0')
TeX parse error: syntax error


Probably this has to do with the fact that the null character \0 is also an
end of string marker for C.

Finally, I get a render error with the right angle symbol.  I tried a few
fonts, but I still always get it.


text (0.5,1, '\rangle', 'fontname', 'arial')
warning: ft_render: skipping missing glyph for character '232a'







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