Re: Extending lua wordcount filter to count specific parts of text

[hgvhgvhgv <jbauchner-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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Now I understand why what I wrote doesn't work (the RawInline objects is 
limited to just whats in the <> and isn't a traversable object like Note). 
But based on reading through the listserv, I'm not sure if I can do what I 
want with two arbitrary tags as RawInline objects. It would be easier if my 
<qu> tags were <span class="qu"> (though less ideal from a readability 
standpoint). I can convert these to spans in this way (
https://groups.google.com/g/pandoc-discuss/c/yQjvOhIQ40A/m/RclMzdtiCAAJ). 
But then it seems like I have to go back to markdown to get the lua filter 
to recognize these as Span objects? Or is there some way to do it all in 
one pass? Maybe a completely different approach is necessary (somehow 
putting what's between the two RawInline tags into a table or list?). Sorry 
for my obtuse first attempts.

On Monday, August 17, 2020 at 3:42:54 PM UTC-4 h...-97jfqw80gc5Wk0Htik3J/w@public.gmane.org wrote:

> I'd like to extend the lua wordcount filter to tell me a bit more about 
> specific parts of my text, specifically how many words are in the footnotes 
> and how many words are in "original quotations," which I mark off with the 
> <qu></qu> tag in my markdown (and which I then strip later via another 
> filter for certain versions). I got the footnote part to work but can't 
> figure out the RawInline html bit. Any guidance would be appreciated.
>
> Here's my filter followed by a simple markdown doc and the results
>
> ```
> -- counts words in a document 
>
> words = 0 
> notewords = 0
> quotewords = 0
> notenoquotewords = 0
> noquotewords = 0
>
> wordcount = { 
>   
>     Note = function(el)
>         pandoc.walk_inline(el, {
>             Str = function(el) 
>                 if el.text:match("%P") then 
>                     notewords = notewords + 1
>                 end 
>             end })
>     end,
>
>     RawInline = function(el)
>         if el.text == '<qu>' then
>             pandoc.walk_inline(el, {
>                 Str = function(el)
>                     if el.text:match("%P") then 
>                         quotewords = quotewords + 1
>                     end 
>             end })
>         end
>     end,
>
>     Str = function(el) 
>         -- we don't count a word if it's entirely punctuation: 
>         if el.text:match("%P") then 
>             words = words + 1 
>         end 
>     end, 
>
>     Code = function(el) 
>         _,n = el.text:gsub("%S+","") 
>         words = words + n 
>     end, 
>
>     CodeBlock = function(el) 
>         _,n = el.text:gsub("%S+","") 
>         words = words + n 
>     end 
> } 
>
> function Pandoc(el) 
>     -- skip metadata, just count body: 
>     pandoc.walk_block(pandoc.Div(el.blocks), wordcount) 
>     mainwords = words - notewords
>     notenoquotewords = notewords - quotewords
>     noquotewords = words - quotewords
>     print(words .. " total words")
>     print(mainwords .. " words in main text") 
>     print(notewords .. " words in notes")
>     print(noquotewords .. " total words minus original quotes")
>     print(quotewords .. " words in original quotes")
>     print (notenoquotewords .. " words in notes minus original quotes")
>     os.exit(0) 
> end
> ```
>
> test.md mwe markdown file
> ```
> Suspendisse malesuada venenatis mauris. Curabitur ornare mollis velit. Sed 
> vitae metus.
> "Morbi posuere mi id odio."[^1]
>
> [^1]: Citation. <qu>("Original quotation here.")</qu>
> ```
> `pandoc --lua-filter wordcount.lua test.md`
>
> > 20 total words
> > 16 words in main text
> > 4 words in notes
> > 20 total words minus original quotes
> > 0 words in original quotes
> > 4 words in notes minus original quotes
>

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