Inline...

On Fri, 20 Aug 2021 at 17:06, Clément Aubert <aubert.clement@gmail.com> wrote:

Thanks a lot for looking into it!

It does not seem to produce the desired effect on my end.

Could you explain how changing

return {{Meta = get_default_code_class},
        {Code = add_default_code_class},
        {CodeBlock = add_default_code_class}}

into

return {{Meta=get_default_code_class}, {CodeBlock=add_default_code_class}}

(as far as I can tell, this is the only modification) is supposed to achieve the desired effect?

Ah, well I don't think that you included this in your original message, so I thought that was the problem :).

return {{Meta = get_default_code_class},
        {Code = add_default_code_class},
        {CodeBlock = add_default_code_class}}

You are correct: the only difference is that you have Code. You could combine Code and CodeBlock into a single pass, as in:

return {{Meta=get_default_code_class},
        {Code=add_default_code_class, CodeBlock=add_default_code_class}}

But it _does_ work for me! Maybe add some debug output? Here I'm using my own inspect-like function but the standard inspect would probably be similar.

Pandoc version? I'm using 2.14.1.

% cat default-code-class.lua 

utils = require 'utils'

local default_code_classes = {}

function get_default_code_class(meta)

  utils.temp('meta', meta)

  if meta['default-code-class'] then

    default_code_classes = {pandoc.utils.stringify(meta['default-code-class'])}

  end

end

function add_default_code_class(el)

  utils.temp(el.tag, el)

  if #(el.classes) == 0 then

    el.classes = default_code_classes

    return el

  end

end

return {{Meta=get_default_code_class},

        {Code=add_default_code_class, CodeBlock=add_default_code_class}}

% LUA_PATH=../?.lua pandoc -L default-code-class.lua code.md -M default-code-class="c numberLines"

(#) meta {default-code-class: "c numberLines"}

(#) Code Code {

  attr: Attr {

    attributes: {}

    classes: {}

    identifier: ""

  }

  text: "inline code"

}

(#) CodeBlock CodeBlock {

  attr: Attr {

    attributes: {}

    classes: {}

    identifier: ""

  }

  text: "This is a code block."

}

<p>This is <code class="c numberLines">inline code</code>.</p>

<pre class="c numberLines"><code>This is a code block.</code></pre>

Thanks!

Le ven. 20 août 2021 à 11:57, William Lupton <wlupton-QSt+ys/nuMyEUIsrzH9SikB+6BGkLq7r@public.gmane.org> a écrit :

I think you need a two-pass filter, one to pick up the metadata and the other to use it (this is because Meta is called nearly last).

This works (I've re-ordered your functions and declared a local variable, but this probably wasn't necessary).

% cat default-code-class.lua 

local default_code_classes = {}

function get_default_code_class(meta)

  if meta['default-code-class'] then

    default_code_classes = {pandoc.utils.stringify(meta['default-code-class'])}

  end

end

function add_default_code_class(el)

  if #(el.classes) == 0 then

    el.classes = default_code_classes

    return el

  end

end

return {{Meta=get_default_code_class}, {CodeBlock=add_default_code_class}}

% pandoc -L default-code-class.lua code.md -M default-code-class="c numberLines"

<pre class="c numberLines"><code></code></pre>

On Fri, 20 Aug 2021 at 16:29, Clément Aubert <aubert.clement-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

Hi,

This question relates to

https://github.com/jgm/pandoc/issues/2104#issuecomment-595983954

There is a lua filter containing

``` lua
function add_default_code_class(el)
  if #(el.classes) == 0 then
    el.classes = default_code_classes
    return el
  end
end

function get_default_code_class(meta)
  if meta['default-code-class'] then
    default_code_classes = {pandoc.utils.stringify(meta['default-code-class'])}
  end
end
```

and I'm trying to tweak it so that two classes can be passed from the command-line, eg. using

--lua-filter default-code-class.lua -M default-code-class=c, numberLines

but can't find a way.

Thanks!

Clément.

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