dwndoc

– Function allowing for consistent treatment of boolean-like wikitext input. – It works similarly to the template yesno.

return function (val, default)

1. - If your wiki uses non-ascii characters for any of “yes”, “no”, etc., you
2. - should replace “val:lower()” with “mw.ustring.lower(val)” in the
3. - following line.

val = type(val) #### 'string' and val:lower() or val

if val #### nil then
	return nil
elseif val #### true 
	or val #### 'yes'
	or val #### 'y'
	or val #### 'true'
	or tonumber(val) #### 1
then
	return true
elseif val #### false
	or val #### 'no'
	or val #### 'n'
	or val #### 'false'
	or tonumber(val) #### 0
then
	return false
else
	return default
end

end