Module:Citation/CS1/Utilities

local u = {}

local z = { error_categories = {};		-- for categorizing citations that contain errors error_ids = {}; message_tail = {}; maintenance_cats = {};		-- for categorizing citations that aren't erroneous per se, but could use a little work properties_cats = {};		-- for categorizing citations based on certain properties, language of source for instance };

--[[--< I S _ S E T >--

Returns true if argument is set; false otherwise. Argument is 'set' when it exists (not nil) or when it is not an empty string. This function is global because it is called from both this module and from Date validation

]] function is_set( var ) return not (var == nil or var == ''); end

return {is_set = is_set, z=z}													-- return exported functions and tables