TeX, LaTeX and Friends

12:06 AM

Do you have any idea how to make this line work in windows?
\immediate\write18{wolframscript & echo %ERRORLEVEL% > latexalpha2_check.tmp}

I tried escaping \% and \& but it still doesn't

Skillmon

@Diaa \begingroup\catcode\%=12\catcode\&=12\catcode_=12 \@firstofone{\endgroup\immediate\write18{wolframscript & echo %ERRORLEVEL% > latexalpha2_check.tmp}`

@Diaa change the category codes locally (like done above) or use the \lowercase trick (but that one would be annoying since you actually need uppercase characters).

Diaa

@Skillmon I forgot to say that this line should be written inside a package definition.

@Skillmon Would it work inside a *.sty file?

Skillmon

\begingroup
  \catcode`\%=12
  \catcode`\&=12
  \catcode`\_=12
  \expandafter
\endgroup
\@firstofone{\newcommand*\mywolframcall{\immediate\write18{wolframscript & echo %ERRORLEVEL% > latexalpha2_check.tmp}}}

@Diaa use the above, and then use \wolframcall instead wherever you'd want to put your \immediate\write18.

Diaa

@Skillmon you mean \mywolframcall?

Skillmon

@Diaa It doesn't really matter whether you use \@firstofone{\endgroup\newcommand...} or \expandafter\endgroup\@firstofone{\newcommand...} (but the former is a bit faster)

@Diaa of course :P

Minsky

12:16 AM

i just thought asking wouldn't be bad

instead of bouncing around

nevermind

Skillmon

@Minsky yeah, but you didn't ask.

Minsky

yeah i didn't sleep much

Skillmon

@Minsky instead you posted a few words without context and a question mark, that's not a question.

Minsky

i know i know

sorry

Skillmon

@Minsky so, what did you mean? Do you want to implement a neural network in LaTeX? If so, bad idea, don't.

@Minsky do you want to draw network topologies? If so there are more than enough examples on the site already.

Minsky

12:18 AM

wanna do wan to chase monsters

Skillmon

@Minsky afaik, there is no dedicated package to draw or create NNs, but drawing can be done with TikZ rather easily.

Minsky

I see. Yes, this kindof diagram:

with less lines though

i'll check tikz

Skillmon

@Minsky should be easily done in LaTeX with TikZ and \foreach. Code on the main site.

Minsky

great, thanks @Skillmon

Skillmon

@Minsky from 2014: tex.stackexchange.com/questions/153957/…

@Minsky there are newer questions with coloured networks and maybe more fancy code.

Diaa

12:21 AM

It didn't work with me. For the following snippet

\AtBeginDocument{%
%^^A heck if shell-escape is available
\ifcase\pdf@shellescape
\PackageError{latexalpha2}{Shell escape is not enabled, which is required to use latexalpha2}{}\or
\PackageInfo{latexalpha2}{Shell escape is successfully enabled}{}\or
\PackageError{latexalpha2}{Shell escape is not enabled, which is required to use latexalpha2}{}\fi

%^^A check if wolframscript is available
\begingroup
\catcode`\%=12
\catcode`\&=12
\catcode`\_=12
\expandafter

Skillmon

@Minsky interesting link: github.com/battlesnake/neural

@Diaa you're missing a } after the last \PackageError line for \AtBeginDocument.

Minsky

that looks good

Diaa

@Skillmon I think I don't since I had no error before inserting this chunk of code.

Skillmon

@Diaa but you do, at least I don't see the matching closing brace. Also, please note that my code must not be nested as the argument of another macro, so you can't use it inside \AtBeginDocument but must define \mywolframcall at the top level.

Diaa

I go in endless compilation when having this

\begingroup
\catcode`\%=12
\catcode`\&=12
\catcode`\_=12
\expandafter
\endgroup
\@firstofone{\newcommand*\mywolframcall{\immediate\write18{wolframscript & echo %ERRORLEVEL% > latexalpha2_check.tmp}}}

\AtBeginDocument{%
%^^A heck if shell-escape is available
\ifcase\pdf@shellescape
\PackageError{latexalpha2}{Shell escape is not enabled, which is required to use latexalpha2}{}\or
\PackageInfo{latexalpha2}{Shell escape is successfully enabled}{}\or
\PackageError{latexalpha2}{Shell escape is not enabled, which is required to use latexalpha2}{}\fi

David Carlisle

1:01 AM

@Diaa you can use \@percentchar

@Diaa why not simply run the script before latex, why use write18 at all? (also it seems to be using commands you have not defined (or shown them being defined such as \pdf@shellescape

Diaa

@DavidCarlisle Please, have a look at this package file

%% This is file `latexalpha2wlua.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% latexalpha2.dtx (with options: `package')
%%
%% This is a generated file.
%%
%% Copyright (C) 2019 by Yi Liu <me@yliu.io>
%%
%% This file may be distributed and/or modified under the conditions of
%% the LaTeX Project Public License, either version 1.3c of this license
%% or (at your option) any later version. The latest version of this
%% license is in:
%%
%% http://www.latex-project.org/lppl.txt

The problematic line is no. 186
\immediate\write18{wolframscript \@ampchar echo \@percentchar ERRORLEVEL\@percentchar > latexalpha2_check.tmp}

David Carlisle

@Diaa well that runs wolframscript whatever that does

Diaa

This Windows command
wolframscript & echo %ERRORLEVEL% > latexalpha2_check.tmp
needs to be interpreted inside the package definition.

David Carlisle

@Diaa do you have the command wolframscript installed?

Diaa

@DavidCarlisle Yes. I can run the command externally in the command prompt without any problems

David Carlisle

1:10 AM

@Diaa well as a start just use \immediate\write18{wolframscript} and skip the checks

Diaa

@DavidCarlisle Actually all the AtBeginDocument part can be skipped/deleted since I am sure that I have wolfram installed and shellescape enabled.

I am just curious how to make this command work for my own knowledge.

David Carlisle

@Diaa delaying the shell escape checks to begin document makes no sense anyway as it can not change

@Diaa sure but remove all the tests simplify it to get it working then put them back bit by bit until it breaks

you say it loops?

Diaa

I just copied what the original author wrote :)
If you have further recommendations I would be grateful to give them as comments on this answer to my question https://tex.stackexchange.com/a/579254/2288

@DavidCarlisle This version pastebin.com/CuScXXVm doesn't stop compiling.

David Carlisle

@Diaa stick \tracingall somewhere and see what it is doing, but it's 1 in the morning and I don't have a windows tex or a wolfram alpha script so I'm out:-)

Diaa

@DavidCarlisle good night :)

Diaa

1:31 AM

@DavidCarlisle @Skillmon I knew what made it loop. Wolframscript in Windows is waiting for my input, so I had to make it like this

\immediate\write18{WHERE wolframscripts >nul 2>nul \@ampchar echo \@percentchar ERRORLEVEL\@percentchar > latexalpha2_check.tmp}
to work

Thanks for your consideration and help

Pablo González L

1:53 AM

@Diaa Are you trying to make that package compatible for windows?

Diaa

Yes. This is my original question https://tex.stackexchange.com/q/578144/2288
I think I managed to make it work after the answer I got and the help here.

Skillmon

8:31 AM

@DavidCarlisle sometimes I should think before providing a great solution :)

@Diaa there is the possibility to check whether you're currently running on a Unix or on Windows from within TeX, you can use the ifplatform package for that. With it you could make latexalpha2 OS independent.

Joseph Wright

@Skillmon Or in expl3 \sys_if_platform_unix:TF

David Carlisle

8:51 AM

@Skillmon thinking is definitely optional at that time of night

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TeX, LaTeX and Friends

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