You can use the pandoc.utils.type() function. It will return a string 'Inlines' for an Inlines object but 'table' for a regular table.

Unfortunately metadata mappings are now represented as regular tables so you may have to check whether a regular table is an array or a mapping. I usually do that with a function like this:

``````lua

local function is_map (val)

if 'table' == pandoc.utils.type(val) then

if 0 == #val then

if next(val) then return true end

end

return false

end

``````

Den tis 24 maj 2022 08:50Shane Liesegang <liesegang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:

I've figured out a workaround, but just wondering if there's a better way than diving into the metatables:

~~~
function fix_table_strings(t)
for k, v in pairs(t) do
if type(v) == "table" then
local metatable = getmetatable(v)
if metatable ~= nil and metatable.__name == "Inlines" then
t[k] = pandoc.utils.stringify(v)
else
fix_table_strings(t[k])
end
end
end
end
~~~

On Tuesday, May 24, 2022 at 9:30:41 AM UTC+3 Shane Liesegang wrote:
Is there a way to tell whether a given object is a pandoc.Inlines as opposed to a plain Lua table? When I call `type(obj)` on it, it just returns "table." I note that if I print it, it shows "Inlines:" instead of "table:" but is there any smarter way to determine?

I see some code in the Lua filters example repository that does this kind of check, but I don't know if it's crucial to that code or not, if something has changed recently, etc.

(My use case here is walking through my Meta object and building something that will get passed to different functions -- if it encounters a nested table of data, I need to recurse, but if it's an Inlines object, I want to stringify it.)

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