Anyone could help me with this error in filter module?

Anyone could help me with this error in filter module?

[Xan]

Hi,

Any hint on that [https://github.com/adityam/filter/issues/17], please?

Thanks,
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Re: Anyone could help me with this error in filter module?

[Wolfgang Schuster]

Am 28.07.2014 um 16:15 schrieb Xan <dxpublica@telefonica.net>:

> Hi,
> 
> Any hint on that [https://github.com/adityam/filter/issues/17], please?

Don’t use \doifmode{…}{…} etc. with buffers or environments which rely on a buffer because you disable the function to keep end of lines in the input.

What you have to do in this case is to use the \startmode or \startnotmode commands.

\usemodule[filter]

\defineexternalfilter
    [python]
    [filtercommand={python \externalfilterinputfile\space > \externalfilteroutputfile},cache=force]

\starttext

\startmode[solucions]

\starttextrule{Solucions}

\startpython
from sympy.solvers import solve
from sympy import Symbol
from sympy import Eq

x = Symbol('x')
print(solve(Eq(3*x + 2, 35), x))
\stoppython

\stoptextrule

\stopmode

\stoptext

Wolfgang
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Re: Anyone could help me with this error in filter module?

[Aditya Mahajan]

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On Mon, 28 Jul 2014, Wolfgang Schuster wrote:

>
> Am 28.07.2014 um 16:15 schrieb Xan <dxpublica@telefonica.net>:
>
>> Hi,
>>
>> Any hint on that [https://github.com/adityam/filter/issues/17], please?
>
> Don’t use \doifmode{…}{…} etc. with buffers or environments which rely on a buffer because you disable the function to keep end of lines in the input.
>
> What you have to do in this case is to use the \startmode or \startnotmode commands.
>
> \usemodule[filter]
>
> \defineexternalfilter
>    [python]
>    [filtercommand={python \externalfilterinputfile\space > \externalfilteroutputfile},cache=force]
>
> \starttext
>
> \startmode[solucions]
>
> \starttextrule{Solucions}
>
> \startpython
> ....
> \stoppython
>
> \stoptextrule
>
> \stopmode
>
> \stoptext

Another option is (untested):

\defineexternalfilter
   [python]
   [
     filtercommand={...},
     before={\starttextrule{Solutions}},
     after={\stoptextrule},
   ]

\startmode[solutions]
\setupexternalfilter[python][state=stop, read=no]
\stopmode

\starttext

\startpython
...
\stoppython
\stoptext

BTW, you can simplify your setup using:

\startbuffer[sympy]
from sympy.solvers import solve
from sympy import Symbol
from sympy import Eq

x = Symbol('x')
\stopbuffer

\defineexternalfilter
   [python]
   [
     filtercommand={...},
     bufferbefore={sympy},
   ]

\starttext
\startpython
print(solve(Eq(3*x + 2, 35), x))
\stoppython
\stoptext

Aditya

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Re: Anyone could help me with this error in filter module?

[Xan]

> Am 28.07.2014 um 16:15 schrieb Xan <dxpublica at telefonica.net>:
> 
> > Hi,
> > 
> > Any hint on that [https://github.com/adityam/filter/issues/17], please?
> 
> Don’t use \doifmode{…}{…} etc. with buffers or environments which rely on a buffer because you disable the function to keep end of lines in the input.
> 
> What you have to do in this case is to use the \startmode or \startnotmode commands.
> 
> Wolfgang


Thanks Wolfgang and Aditya.
This behaviour of doifmode is not documented in the wiki. Can anyone could add it

Xan
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Re: Anyone could help me with this error in filter module?

[Hans Hagen]

On 7/30/2014 10:27 AM, Xan wrote:
>> Am 28.07.2014 um 16:15 schrieb Xan <dxpublica at telefonica.net>:
>>
>>> Hi,
>>>
>>> Any hint on that [https://github.com/adityam/filter/issues/17], please?
>>
>> Don’t use \doifmode{…}{…} etc. with buffers or environments which rely on a buffer because you disable the function to keep end of lines in the input.
>>
>> What you have to do in this case is to use the \startmode or \startnotmode commands.
>>
>> Wolfgang
>
>
> Thanks Wolfgang and Aditya.
> This behaviour of doifmode is not documented in the wiki. Can anyone could add it

it is unrelated to doifmode but a general tex property: if you pass 
arguments the catcodes are frozen

\startmode[foo]

\stopmode

can be tried as alternative as that one doesn't pick up arguments

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