ANSI escape sequences in jupyter notebook output cells

ANSI escape sequences in jupyter notebook output cells

[Meik Hellmund]

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'jupyter nbconvert' is able to produce colored  output in HTML and LaTeX 
from ipynb files with output colored and styled by ANSI escape sequences. I 
think  
https://github.com/jupyter/nbconvert/blob/main/nbconvert/filters/ansi.py is 
the relevant code.  

Is it possible to implement this by a pandoc filter? If I understand 
https://github.com/jgm/pandoc/issues/5633 correctly,  those escape 
sequences are already missing in the AST presented to a filter. Would it be 
possible to have an option that keeps them? 

Many thanks for a great software and years of development and maintenance!
Meik

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Re: ANSI escape sequences in jupyter notebook output cells

[John MacFarlane]

The ANSI escapes are stripped out of the code block unless the output format is ipynb OR `--ipynb-output=all` is used.
So, if you use that command-line option, you could write a filter that does something with the ANSI escapes.



> On Sep 20, 2022, at 7:59 AM, Meik Hellmund <meik.hellmund-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> 
> 'jupyter nbconvert' is able to produce colored  output in HTML and LaTeX from ipynb files with output colored and styled by ANSI escape sequences. I think  https://github.com/jupyter/nbconvert/blob/main/nbconvert/filters/ansi.py is the relevant code.  
> 
> Is it possible to implement this by a pandoc filter? If I understand https://github.com/jgm/pandoc/issues/5633 correctly,  those escape sequences are already missing in the AST presented to a filter. Would it be possible to have an option that keeps them? 
> 
> Many thanks for a great software and years of development and maintenance!
> Meik
> 
> 
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Re: ANSI escape sequences in jupyter notebook output cells

[Meik Hellmund]

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Ah, thank you! I  totally misunderstood the meaning of `--ipynb-output`. 
So  I can start playing around with a lua filter.
I want to use this filter with Quarto. Then I will  need  the original 
meaning/effect of `ipynb-output=best`, too. 
Rewrite your ` filterIpynbOutput` function in Lua?

Best regards, Meik



fiddlosopher schrieb am Dienstag, 20. September 2022 um 20:01:46 UTC+2:

> The ANSI escapes are stripped out of the code block unless the output 
> format is ipynb OR `--ipynb-output=all` is used. 
> So, if you use that command-line option, you could write a filter that 
> does something with the ANSI escapes. 
>
>

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Re: ANSI escape sequences in jupyter notebook output cells

[John MacFarlane]

You could perhaps output to native (using the filter and --ipynb-output=all), then read in the native and output your desired format using --ipynb-output=best?

> On Sep 21, 2022, at 3:14 AM, Meik Hellmund <meik.hellmund-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> 
> Ah, thank you! I  totally misunderstood the meaning of `--ipynb-output`. So  I can start playing around with a lua filter.
> I want to use this filter with Quarto. Then I will  need  the original meaning/effect of `ipynb-output=best`, too. 
> Rewrite your ` filterIpynbOutput` function in Lua?
> 
> Best regards, Meik
> 
> 
> 
> fiddlosopher schrieb am Dienstag, 20. September 2022 um 20:01:46 UTC+2:
> The ANSI escapes are stripped out of the code block unless the output format is ipynb OR `--ipynb-output=all` is used. 
> So, if you use that command-line option, you could write a filter that does something with the ANSI escapes. 
> 
> 
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> To unsubscribe from this group and stop receiving emails from it, send an email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
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Re: ANSI escape sequences in jupyter notebook output cells

[Meik Hellmund]

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Hm, I want to use this as a quarto extension. Don't know how to make two 
pandoc-runs in quarto. So I tried to implement the logic of 
`--ipynb-outbut=best` in lua:  
https://gitea.math.uni-leipzig.de/hellmund/PandocAnsiFilter

fiddlosopher schrieb am Mittwoch, 21. September 2022 um 19:32:04 UTC+2:

> You could perhaps output to native (using the filter and 
> --ipynb-output=all), then read in the native and output your desired format 
> using --ipynb-output=best?
>
> > On Sep 21, 2022, at 3:14 AM, Meik Hellmund <meik.h...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > 
> > Ah, thank you! I totally misunderstood the meaning of `--ipynb-output`. 
> So I can start playing around with a lua filter.
> > I want to use this filter with Quarto. Then I will need the original 
> meaning/effect of `ipynb-output=best`, too. 
> > Rewrite your ` filterIpynbOutput` function in Lua?
> > 
> > Best regards, Meik
> > 
> > 
> > 
> > fiddlosopher schrieb am Dienstag, 20. September 2022 um 20:01:46 UTC+2:
> > The ANSI escapes are stripped out of the code block unless the output 
> format is ipynb OR `--ipynb-output=all` is used. 
> > So, if you use that command-line option, you could write a filter that 
> does something with the ANSI escapes. 
> > 
> > 
> > -- 
> > You received this message because you are subscribed to the Google 
> Groups "pandoc-discuss" group.
> > To unsubscribe from this group and stop receiving emails from it, send 
> an email to pandoc-discus...-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> > To view this discussion on the web visit 
> https://groups.google.com/d/msgid/pandoc-discuss/5f877bed-697b-481c-9604-c5d69168eda9n%40googlegroups.com
> .
>
>

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