MathJax rendering of LaTeX math

[thriveth]

This is a feature request to include MathJax redering of \LaTeX math to the view in Shareboard. I like Shareboard a lot, but writing mostly scientific texts, I use a lot of math notation. Pandoc has built/in MathJax support, so it should be possible to include in shareboard fairly easily, I guess, maybe by passing the correct flag to pandoc when running ?

[lambdalisue]

Yes, it is possible but it is not that simple.

Actually you can specify the program for converting the text, that means you can specify the flags to pandoc like

let g:shareboard_command = "pandoc -Ss --toc -m -t html"

However, it might not work for MathJax. MathJax use javascript to produce a math formula and currently shareboard does not support javascript because of my limited knowledge for PyQt. But I totally agree with you suggestion, so I'll try to improve this.

[lambdalisue]

Ah, I totally forgot to tell about --webtex option. sharboard works correctly with --webtex option.

The below is what I use for shareboard.

#!/usr/bin/env bash
CSS="$HOME/.vim/misc/shareboard/css/main.css"
BIB="$HOME/Documents/Mendeley/library.bib"
if [ -f "$BIB" ]; then
    BIBLIOGRAPHY=" --bibliography='$BIB'"
else
    BIBLIOGRAPHY=""
fi
TEXT=`cat /dev/stdin`

# convert with pandoc
TEXT=`echo -nE "$TEXT" | pandoc -f $1 -sS --toc --webtex -c "$CSS" $BIBLIOGRAPHY 2>/dev/null`
#TEXT=`echo "$TEXT" | pandoc -f $1 -sS --toc --webtex -c "$CSS" $BIBLIOGRAPHY`

# modify the text before convert
TEXT=`echo -nE "$TEXT" | perl -pe "s!((?:\d+\s)|/)u([mNMgL]\b)!\1\μ\2!g"`
TEXT=`echo -nE "$TEXT" | perl -pe "s!((?:\d+\s)|/)u(mol\b)!\1\μ\2!g"`
TEXT=`echo -nE "$TEXT" | perl -pe 's/(\d+\s)C\b/\1\&celsius;/g'`
TEXT=`echo -nE "$TEXT" | perl -pe 's/(\d+\s)A\b/\1\&angstrom;/g'`

TEXT=`echo -nE "$TEXT" | perl -pe 's/\&celsius;/\°C/g'`
TEXT=`echo -nE "$TEXT" | perl -pe 's/\&angstrom;/\Å/g'`

echo -nE "$TEXT"

And I use the script above like: https://github.com/lambdalisue/vim-castle/blob/master/home/.vim/vimrc.neobundle#L831

[thriveth]

WebTeX looks great for now! I do not quite understand though - the script above s the one you call command.sh which you then call from your .vimrc like linked below it...?

[lambdalisue]

That's good :-)

Well I use the shell script to replace "10 uM" to "10 μM" or "&angstrom;" to "Å" after pandoc conversion for convenience.

You can see the documentation at https://github.com/lambdalisue/shareboard.vim#replace-text-before-pandoc (it said 'before' but I found that 'after' is better for this usage)

[thriveth]

...But to simply use WebTeX with ShareBoard, what should I do? (I am going to convert the final document to LaTeX anyway, so it shouldn't be too fancy, but some math rendering of sorts would be very nice for a readable preview).

[lambdalisue]

then simply specify the command like

let g:shareboard_command = "pandoc -sS --toc -m html --webtex"

in your vimrc.

From README

g:shareboard_command Specify the compile command. Default is pandoc -Ss --toc -m -t html

[thriveth]

Hmm... It doesn't change anything...

[lambdalisue]

Well in my case, it works like this.

Are you sure the g:shareboard_command is set as pandoc -sS --toc -m html --webtex? And are you sure you are using latest Shareboard and shareboard.vim?

P.S. I'm using pandoc 1.12.0.2 which is located in ~/.cabal/bin and I add the directory to $PATH in ~/.vimrc like

let $PATH=expand("~/.cabal/bin").":".$PATH

[thriveth]

I am using pandoc 1.12.1, also form Cabal, and latest Shareboard and shareboard.vim. I even use the same desktop wallpaper as you! :smile:

However, by reading the pandoc help I found out that by changin -m to -t in your suggested command:

let g:shareboard_command="pandoc -Ss --toc --webtex -t html"

...then it works just fine.

[thriveth]

...Maybe an idea to ad --webtex to the default command?

[lambdalisue]

Oops, you are right. -m is option for latexmathml and might conflict with --webtex option.

I was writing my thesis so my eyes were too tired to find mistake even I posted default option and it definitely say -t is the option for specifying html...

Sorry for making you confuse. And yeah, I'll add --webtex instead of -m for default.

[thriveth]

No problem! Thanks for writing Shareboard and making it available!

[lambdalisue]

I add --webtex to the default command :-)