LUA – PANDOC number sample list does not apply to custom writers

(@) item 1
(@) item 2

## header ##
< br />(@) item 3

1. item 1
2. item 2
 header
3. item 3

1. item 1
2. item 2
 header
1. item 3

function OrderedList(items)
 local buffer = {}
 for _, item in pairs(items) do
 table.insert(buffer, "
" .. item .. "
")
 end
 return "
\n" .. table.concat(buffer, "\n") .. "\n
"
end

function OrderedList(items)
 local buffer = {}
 for elem, item in pairs(items) do
 print(elem)
 table.insert(buffer, " 
" .. item .. "
")
 end
 return "
\n" .. table.concat(buffer, "\n") .. "\n
"
end

1
2
1

-- for counting examples (@) 
local ExampleIdx = 1

function OrderedList(items, num, sty, delim)
 local buffer = {}
 for _, item in pairs(items) do 
 table.insert(buffer, "
" .. item .. "
")
 end
 local start = ""
 if sty == " Example" then
 if ExampleIdx> 1 then
 start = 'start="' .. ExampleIdx ..'"'
 end
 ExampleIdx = ExampleIdx + table.getn(items) 
 end
 return'\n' .. table.concat(buffer, "\n") .. "\n"
end

Pandoc provides an amazing extension example_lists for consecutively numbered lists throughout the document. We tried to use a custom writer to generate html, but the numbers in the resulting html were Break. Consider the following md code:

(@) item 1
(@) item 2

## header ##

(@) item 3

Pandoc generates the following html pages by default:

1. item 1
2. item 2
 header
3. item 3

But use a custom writer (we use pandoc –print- default-data-file sample.lua as an example) It produces:

1. item 1
2. item 2
 header
1 . item 3

The example lua-writer contains the following code for ordered list processing:

function OrderedList(items)
 local buffer = {}
 for _, item in pairs(items) do
 table.insert(buffer, "
" .. item .. "
")
 end< br /> return "
\n" .. table.concat(buffer, "\n") .. "\n
"
end

If it is items table Add printing to the first element in the

function OrderedList(items)
 local buffer = {}
 for elem, item in pairs(items) do 
 print(elem)
 table.insert(buffer, "
" .. item .. "
")
 end
 return "
\ n" .. table.concat(buffer, "\n") .. "\n
"
end

We will only see the number of the final list item:

1
2
1

So I don’t think the problem is in the writer itself. Do you have any ideas on how to solve this problem?

Check the custom writer (src/Text/Pandoc/Writers/Custom.hs) through pandoc sources, you may find that the OrderedList function actually has four Parameters, the third of which is the list style. You should be interested in the example list style. Therefore, you can update the OrderedList implementation accordingly: introduce global variables to calculate the total items in the Example-list, and change the function code according to the list style ( Add the start attribute to the ol html tag of the example list).

-- for counting examples (@)
local ExampleIdx = 1
 
function OrderedList(items, num, sty, delim)
 local buffer = {}
 for _, item in pairs(items) do
 table.insert(buffer, "< li>" .. item .. "")
 end
 local start = ""
 if sty == "Example" then
 if ExampleIdx> 1 then 
 start = 'start="' .. ExampleIdx ..'"'
 end
 ExampleIdx = ExampleIdx + table.getn(items)
 end
 return'< ol' .. start ..'>\n' .. table.concat(buffer, "\n") .. "\n"
end