Hello fiddlosopher,

thank you very much for your answer.
Great, it works!
(Must definitely look into the potential of Lua filters...).

Thanks for your time and best regards

fiddlosopher schrieb am Dienstag, 24. Januar 2023 um 22:28:10 UTC+1:
This is using the new pandoc 3.0 feature which allows pandoc to be used as a Lua interpreter.  So just save the file as rosetta.lua and then;

pandoc lua rosetta.lua


On Jan 24, 2023, at 1:17 PM, 'rufus42' via pandoc-discuss <pandoc-...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> wrote:

Hello fiddlosopher,

Thank you very much for sharing your script.
I would like to use it, but unfortunately I don't know how.
Do I use the script like a Lua filter?

Please be so kind and give me a hint how I can use your script.

Thank you for your time and best regards

fiddlosopher schrieb am Samstag, 21. Januar 2023 um 20:05:46 UTC+1:
-- This Lua script, when run using `pandoc lua`, will create an HTML
-- file rosetta.html that compares how the same content is represented
-- in all the text markup languages pandoc supports:

local inp = [[
# Heading

## level 2

### level 3

#### level 4 with attributes {.blue #foobar}

- Unordered
- list

1. ordered
2. list

a) Lettered list

with continuation paragraph

> Block quote

``` {.lua}
local formats = pandoc.writers
for format,_ in formats do
print(format)
end
```

*emphasized text **with strong emphasis***

`verbatim text` and a [link with `verbatim`](http://example.com)
]]
local doc = pandoc.read(inp, "markdown")

local formats = pandoc.writers
-- remove binary formats:
formats.docx = nil
formats.pptx = nil
formats.odt = nil
formats.epub2 = nil
formats.epub3 = nil
formats.epub = nil
formats.chunkedhtml = nil
formats.biblatex = nil
formats.bibtex = nil
formats.csljson = nil

local blocks = {}

-- Table of code languages to use for highlighting, when it differs
-- from the format name:
local langs = {
icml = "xml",
jira = "xml",
fb2 = "xml",
docbook = "xml",
docbook4 = "xml",
docbook5 = "xml",
commonmark = "markdown",
commonmark_x = "markdown",
context = "latex",
dzslides = "html5",
slideous = "html",
slidy = "html",
man = "troff",
ms = "troff",
gfm = "markdown",
markdown_mmd = "multimarkdown",
markdown_github = "markdown",
revealjs = "html",
beamer = "latex",
ipynb = "json",
opendocument = "xml",
native = "haskell",
html5 = "html",
html4 = "html",
}

local sorted_formats = {}
for format,_ in pairs(formats) do
table.insert(sorted_formats, format)
end
table.sort(sorted_formats)

-- construct document part for each format
for _,format in ipairs(sorted_formats) do
table.insert(blocks, pandoc.Header(2, format))
local lang = langs[format] or format
table.insert(blocks,
pandoc.CodeBlock(pandoc.write(doc, format), {class = lang}))
end

local template = pandoc.template.compile(pandoc.template.default("html5"))
local html = pandoc.write(pandoc.Pandoc(blocks,
{title = "Markup Rosetta Stone"}),
"html5",
{ template = template })

io.open("rosetta.html", "w"):write(html)
print("Created rosetta.html")


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