-- phpBB3 uses own markdown parser (https://s9etextformatter.readthedocs.io/Plugins/Litedown/Syntax/),

-- which differs in some minor details. That's why some fixes needed.

local symbols = "([*><]+)"

function Str (el)

-- normal way of escaping the asterisk is \*, but that does not work in Litedown.

-- the same is with angle brackets

if el.text:find(symbols) then

if el.text=="*" then

return pandoc.RawInline("markdown","[i]*[/i]") -- prevent parsing as list item

end

local parts,from = {},1

repeat

local a,b,after = el.text:match("^(.-)"..symbols.."()",from)

if not a then

table.insert(parts, pandoc.Str(el.text:sub(from)))

break

elseif a~="" then

table.insert(parts, pandoc.Str(a))

end

table.insert(parts, pandoc.RawInline("markdown",b))

from = after

until from>el.text:len()

return parts

end

end

function Link (el)

-- replace by Emph because forum engine fails to parse such links

if el.target:match"^:" then

return pandoc.Emph(el.content)

end

-- remove links as forum engine does not create anchors for headers.

if el.target:match"^#" then

return pandoc.Strong(el.content)

end

end