latex to markdown (gfm or commonMark)

[primejade <hosteam01-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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Hi, I have some LaTeX files which I need to convert them to Markdown (gfm 
or commonMark). But I need the LaTeX's \title{} (I guess metadata.title in 
pandoc) to be a # (h1). I have some lua filters to do a header.level shift, 
but I cannot add the metadata.title as a # heading.

lua-filter-1: shift headings
local title
function promote_header(header)
if header.level < 6 then
header.level = header.level + 1
return header
end
if not title then
title = header.content
print(title)
return {}
end
local msg = '[WARNING] title already set; discarding header "%s"\n'
io.stderr:write(msg:format(pandoc.utils.stringify(header)))
return {}
end
return {
{Meta = function (meta) title = meta.title end}, -- init title
{Header = promote_header},
{Meta = function (meta) meta.title = title; return meta end}, -- set title
}

lua-filter-2: append metadata.title at the beginning of the file as #
function Meta(m)
if m.title then
local title_text = pandoc.utils.stringify(m.title)
-- io.write("# " .. title_text .. "\n")
end
return {}
end

Any ideas how to achieve this?

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