local a;local b;if table.copy then a=table.copy(unicode)b=table.copy(unicode)else a={}b=unicode end;function a.readCodePoint(a)checkArg(1,a,"function")local function b(a,b,...)for c,c in ipairs({...})do if not(c and c>=a and c<b)then return false end end;return true end;local c=a()if c==nil then return end;if c<128 then return c elseif c<192 then return nil elseif c<224 then local a=a()if a==nil then return nil end;if b(128,192,a)then local a=((c&31)<<6)|(a&63)return a end elseif c<240 then local a,d=a(),a()if a==nil and d==nil then return nil end;if b(128,192,a,d)then local a=((c&15)<<12)|((a&63)<<6)|(d&63)return a end elseif c<248 then local a,d,e=a(),a(),a()if a==nil and d==nil and e==nil then return nil end;if b(128,192,a,d,e)then local a=((c&7)<<18)|((a&63)<<12)|((d&63)<<6)|(e&63)return a end end;return nil end;function a.readChar(c)checkArg(1,c,"function")return b.char(a.readCodePoint(c))end;function a.codepoint(a)checkArg(1,a,"string")local b=1;return unicode.readCodePoint(function()local a=a:byte(b)b=b+1;return a end),b-1 end;function a.iterate(c)checkArg(1,c,"string","function")if type(c)=="string"then local a,b=c,0;c=function()b=b+1;return a:byte(b)end end;return function()local a=a.readCodePoint(c)if a==nil then return nil end;return b.char(a),a end end;a.char=b.char;a.charWidth=b.charWidth;a.isWide=b.isWide;a.len=b.len;a.lower=b.lower;a.reverse=b.reverse;a.sub=b.sub;a.upper=b.upper;a.wlen=b.wlen;a.wtrunc=b.wtrunc;return a