Use --number-sections with markdown output

Use --number-sections with markdown output

[relayism]

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Hey!
I know --number-sections does not support markdown output, but how could I 
achieve this: 
I am converting a .docx to .md and the headings in word are configured to 
be numbered, when I convert to .md those numbers are lost. 
I'd like to have something like this

# 1 title
## 1.1 subtitle
## 1.2 subtitle
# 2 title
### 2.1.1 subsbutitle

as output, where the numbers are not explicitly part of the docx raw text 
input, but could be appended in same way as --number-sections adds it to 
other formats

Thanks!

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Re: Use --number-sections with markdown output

[Albert Krewinkel]

relayism <tamas.harkai-fWcQWCtGVWc@public.gmane.org> writes:

> I know --number-sections does not support markdown output, but how
> could I achieve this:
>
> I am converting a .docx to .md and the headings in word are configured
> to be numbered, when I convert to .md those numbers are lost.
>
> I'd like to have something like this
>
> # 1 title
> ## 1.1 subtitle
>
> ## 1.2 subtitle
>
> # 2 title
>
> ### 2.1.1 subsbutitle
>
> as output, where the numbers are not explicitly part of the docx raw
> text input, but could be appended in same way as --number-sections adds
> it to other formats

Here's a Lua filter that should do what you need. See
https://pandoc.org/lua-filters.html for details.

``` lua

function Pandoc (doc)
  doc.blocks = pandoc.utils.make_sections(true, nil, doc.blocks):walk {
    Div = function (div)
      if div.attributes.number then
        -- first child should be a heading
        local header = div.content[1]
        header.content = {div.attributes.number, pandoc.Space()}
          .. header.content
        header.attributes.number = nil
        return div.content
      end
    end
  }
  return doc
end

```

-- 
Albert Krewinkel
GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124

Re: Use --number-sections with markdown output

[Julien Dutant]

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Side note: !!! I didn't know pandoc Lists could be concatenated with `..`, 
that's great! Is this a recent addition to the Lua filter module? Would be 
great to document it 
(https://pandoc.org/lua-filters.html#pandoc.list:__concat). Happy to submit 
a PR, but not sure whether small PRs on Pandoc's documentations are 
welcome. 

J

On Tuesday, May 10, 2022 at 10:56:28 AM UTC+1 Albert Krewinkel wrote:

>
> relayism <tamas....-fWcQWCtGVWc@public.gmane.org> writes:
>
> > I know --number-sections does not support markdown output, but how
> > could I achieve this:
> >
> > I am converting a .docx to .md and the headings in word are configured
> > to be numbered, when I convert to .md those numbers are lost.
> >
> > I'd like to have something like this
> >
> > # 1 title
> > ## 1.1 subtitle
> >
> > ## 1.2 subtitle
> >
> > # 2 title
> >
> > ### 2.1.1 subsbutitle
> >
> > as output, where the numbers are not explicitly part of the docx raw
> > text input, but could be appended in same way as --number-sections adds
> > it to other formats
>
> Here's a Lua filter that should do what you need. See
> https://pandoc.org/lua-filters.html for details.
>
> ``` lua
>
> function Pandoc (doc)
> doc.blocks = pandoc.utils.make_sections(true, nil, doc.blocks):walk {
> Div = function (div)
> if div.attributes.number then
> -- first child should be a heading
> local header = div.content[1]
> header.content = {div.attributes.number, pandoc.Space()}
> .. header.content
> header.attributes.number = nil
> return div.content
> end
> end
> }
> return doc
> end
>
> ```
>
> -- 
> Albert Krewinkel
> GPG: 8eed e3e2 e8c5 6f18 81fe e836 388d c0b2 1f63 1124
>

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Re: Use --number-sections with markdown output

[Bastien DUMONT]

It is the metamethod pandoc.List:__concat. Indeed, it would be good to add examples to the metamethods, since not all Lua users know about metatables, especially those who only learn the basics of the language to write filters!

Le Tuesday 10 May 2022 à 06:59:55AM, Julien Dutant a écrit :
> Side note: !!! I didn't know pandoc Lists could be concatenated with `..`,
> that's great! Is this a recent addition to the Lua filter module? Would be
> great to document it (https://pandoc.org/lua-filters.html#
> pandoc.list:__concat). Happy to submit a PR, but not sure whether small PRs on
> Pandoc's documentations are welcome. 
> 
> J
> 
> On Tuesday, May 10, 2022 at 10:56:28 AM UTC+1 Albert Krewinkel wrote:
> 
> 
>     relayism <tamas....-fWcQWCtGVWc@public.gmane.org> writes:
> 
>     > I know --number-sections does not support markdown output, but how
>     > could I achieve this:
>     >
>     > I am converting a .docx to .md and the headings in word are configured
>     > to be numbered, when I convert to .md those numbers are lost.
>     >
>     > I'd like to have something like this
>     >
>     > # 1 title
>     > ## 1.1 subtitle
>     >
>     > ## 1.2 subtitle
>     >
>     > # 2 title
>     >
>     > ### 2.1.1 subsbutitle
>     >
>     > as output, where the numbers are not explicitly part of the docx raw
>     > text input, but could be appended in same way as --number-sections adds
>     > it to other formats
> 
>     Here's a Lua filter that should do what you need. See
>     [1]https://pandoc.org/lua-filters.html for details.
> 
>     ``` lua
> 
>     function Pandoc (doc)
>     doc.blocks = pandoc.utils.make_sections(true, nil, doc.blocks):walk {
>     Div = function (div)
>     if div.attributes.number then
>     -- first child should be a heading
>     local header = div.content[1]
>     header.content = {div.attributes.number, pandoc.Space()}
>     .. header.content
>     header.attributes.number = nil
>     return div.content
>     end
>     end
>     }
>     return doc
>     end
> 
>     ```
> 
>     --
>     Albert Krewinkel
>     GPG: 8eed e3e2 e8c5 6f18 81fe e836 388d c0b2 1f63 1124
> 
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> 
> References:
> 
> [1] https://pandoc.org/lua-filters.html
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