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	Books: Ensure backward compatibility for older written books
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						paramat
					
				
			
			
				
	
			
			
			
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							7a29d26e3e
						
					
				
				
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					6749da1070
				
			@@ -14,17 +14,19 @@ minetest.register_craftitem("default:paper", {
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local function book_on_use(itemstack, user)
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	local player_name = user:get_player_name()
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	local data = minetest.deserialize(itemstack:get_metadata())
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	local formspec, title, text, text_len, page, page_max, cpp, owner =
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		"", "", "", 1, 1, 1, 1, player_name
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	local formspec, title, text, owner = "", "", "", player_name
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	local page, page_max, cpp = 1, 1, 650
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	if data then
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		title = data.title
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		text = data.text
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		owner = data.owner
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		text_len = data.text_len
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		page = data.page
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		page_max = data.page_max
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		cpp = data.chars_per_page
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		if data.page then
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			page = data.page
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			page_max = data.page_max
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			cpp = data.chars_per_page
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		end
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	end
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	if owner == player_name then
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@@ -41,11 +43,11 @@ local function book_on_use(itemstack, user)
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			"label[0.5,0.5;by " .. owner .. "]" ..
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			"tablecolumns[color;text]" ..
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			"tableoptions[background=#00000000;highlight=#00000000;border=false]" ..
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			"table[0.4,0;7,0.5;title;#FFFF00," .. minetest.formspec_escape(title) .. "]"..
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			"textarea[0.5,1.5;7.5,7;;".. minetest.formspec_escape(text:sub(
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			"table[0.4,0;7,0.5;title;#FFFF00," .. minetest.formspec_escape(title) .. "]" ..
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			"textarea[0.5,1.5;7.5,7;;" .. minetest.formspec_escape(text:sub(
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				(cpp * page) - cpp, cpp * page)) .. ";]" ..
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			"button[2.4,7.6;0.8,0.8;book_prev;<]" ..
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			"label[3.2,7.7;Page " .. page .. " of " .. page_max .. "]"..
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			"label[3.2,7.7;Page " .. page .. " of " .. page_max .. "]" ..
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			"button[4.9,7.6;0.8,0.8;book_next;>]"
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	end
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@@ -96,6 +98,8 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
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	elseif fields.book_next or fields.book_prev then
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		local data = minetest.deserialize(stack:get_metadata())
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		if not data.page then return end
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		if fields.book_next then
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			data.page = data.page + 1
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			if data.page > data.page_max then
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