On Sat, 30 Apr 2011, Paul Menzel wrote:

> Am Freitag, den 29.04.2011, 18:13 -0400 schrieb Aditya Mahajan:
>> On Fri, 29 Apr 2011, Paul Menzel wrote:
>
>>> the filter module installed using
>>> does not work with the following example, which is also attached.
>>> 
>>> The output file `minimal-temp-rest.tex` is just empty.
>>>
>>> Replacing »á« by »a« solves the problem.
>>>
>>> Running `filtercommand` in a terminal produces the *correct* output
>>> though and no empty file.
>>>
>>> Is that a known problem?
>>
>> No. The content of the file should not affect whether the filter is run or
>> not. Can you add \traceexternalfilters on the top and check the output
>> (look for lines starting with t-filter).
>
>> The file works correctly on my machine.
>
> That is weired.
>
>> Which version of pandoc are you using?
>
>        $ pandoc --version
>        pandoc 1.5.1.1

I am using 1.6 (the latest version is 1.8), but ...

> As already written in my last mail. Executing the command directly works
> fine.

I really have no idea why this is happening. Pandoc does not give too many 
debugging options. A couple of things to check:

- What happens is you use pandoc -f rst -t native? (The updated example on 
github)?

- If that fails, then try a simple rst file with a unicode letter (no 
table)?

- If that also fails, then a simple markdown file with a unicode letter.

- If that also fails, then some other program that reads a file and writes 
its contents to another file.

- Manually execute the shell command from inside ConTeXt using
\ctxlua{os.execute("....")}.

Also, what OS you are on?

>        $ pandoc -f rst -t context -o rest-temp-rest.tex rest-temp-rest.tmp
>        $ more rest-temp-rest.t*::::::::::::::
>        rest-temp-rest.tex
>        ::::::::::::::
>        \placetable[here]{none}
>        \starttable[|l|l|]
>        \HL
>        \NC test
>        \NC table
>        \NC\AR
>        \HL
>        \NC á
>        \NC b
>        \NC\AR
>        \NC c
>        \NC d
>        \NC\AR
>        \HL
>        \stoptable
>        ::::::::::::::
>        rest-temp-rest.tmp
>        ::::::::::::::
>        =========       =========
>          test            table
>        =========       =========
>        á                 b
>        c                 d
>        ========        ========

Since the .tex file is created, it means that the filter module is running 
correctly. It is calling pandoc with the right options, and pandoc is 
creating an empty rest-temp-rest.tex file. Now I have no idea why that 
file is empty. IIRC, pandoc sometimes misbehaves due to locale settings 
(but I don't see why locale should be different when a program is run from 
inside context then when it is run from a shell).

I am stymied.

Aditya