Module:DYK queue formatting check

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-- Verifies [[WP:DYKMOS]]
-- https://en.wikipedia.org/wiki/Wikipedia:Main_Page/Errors#c-Ravenpuff-20250321152600-Current_DYK

local p = {}
local plainText = require("Module:Plain text")._main

function p._check(content)
	if string.find(content, "|''[^]]+''%]") then
		return "WP:DYKMOS: Markup should go on the outside of the link if possible"
	end
	if string.find(content, "%(''[^)]+''%)") then
		return "WP:DYKMOS: Note that the italics sit outside the parentheses"
	end
	if (string.find(content, "[^']''%?")
		or string.find(content, "''''%?")
		or string.find(content, "[ ;?]%?")) then
		return "WP:DYKMOS: There should not be a space before the question mark, " ..
		"but if the text directly preceding it is italicized, " ..
		"the {{-?}} tag can offset it."
	end
	if string.find(content, "''s ") then
		return "WP:DYKMOS: Keep the bold / italic (or bold italic) text and " ..
		"the apostrophe distinct using {{`s}}/{{'s}} respectively"
	end
	if (string.find(content, "''''{{`") -- Use {{'}} with bold italic
		or string.find(content, "[^']''{{`") -- Use {{'}} with italic
		or string.find(content, "[^']'''{{'")) then -- Use {{`}} with bold
		-- Adapted from [[Template:Quotation mark templates]]
		return "WP:DYKMOS: {{`}} (or {{`s}}) is for adjacent bold markup; " ..
		"{{'}} (or {{'s}}) is for adjacent italic (or bold italic)"
	end

	local frame = mw.getCurrentFrame()
	-- Counting starts from after the space following the three dots
	local hookCount = 0
	for wikitextLine in content:gmatch("\n%* %.%.%. ([^\n]*)") do
		local byteCount = -1 -- and ends at the question mark
		if string.find(wikitextLine, "''%([^)]+%)''") then
			-- The eleven characters in a ''(pictured)'' tag do not count
			byteCount = byteCount - 11
		end
		local expandedLine = plainText(frame:preprocess(wikitextLine), false)
		byteCount = byteCount + #expandedLine
		if byteCount > 200 then
			return "WP:DYK200: The hook cannot exceed 200 prose characters. " ..
			"It is currently " .. count .. " characters: " .. expandedLine
		end
		hookCount = hookCount + 1
		if hookCount ~= 1 then
			if string.find(wikitextLine, "''%([^)]+%)''") then
				return "WP:DYKIMG/WP:DYKMOS: " ..
				"Extra ''(pictured)'' or alternative: " .. expandedLine
			end
		else
			-- Separate to avoid false positives like
			-- [[Special:Diff/1282220478]]
			if not string.find(wikitextLine, "%([^)]+%)") then
				return "WP:DYKIMG/WP:DYKMOS: " ..
				"Missing ''(pictured)'' or alternative: " .. expandedLine
			end
		end
	end
end

function p.main(frame)
	local message = p._check(mw.title.getCurrentTitle().content)
	if message then
		return require("Module:Error").error{message}
	end
end

return p