{"id":36759,"date":"2019-10-31T22:13:39","date_gmt":"2019-10-31T19:13:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/re2c-1-2\/"},"modified":"2019-10-31T22:13:39","modified_gmt":"2019-10-31T19:13:39","slug":"re2c-1-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/re2c-1-2","title":{"rendered":"re2c 1.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u0412 \u043f\u044f\u0442\u043d\u0438\u0446\u0443 2-\u0433\u043e \u0430\u0432\u0433\u0443\u0441\u0442\u0430 \u0432\u044b\u0448\u0435\u043b \u0440\u0435\u043b\u0438\u0437 re2c &mdash; \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u0430 \u043b\u0435\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432 \u0434\u043b\u044f \u044f\u0437\u044b\u043a\u043e\u0432 C \u0438 C++. \u041d\u0430\u043f\u043e\u043c\u043d\u0438\u043c, \u0447\u0442\u043e re2c \u0431\u044b\u043b \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u0432 1993 \u0433\u043e\u0434\u0443 \u041f\u0438\u0442\u0435\u0440\u043e\u043c \u0411\u0430\u043c\u0431\u0443\u043b\u0438\u0441\u043e\u043c \u043a\u0430\u043a \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0439 \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440 \u043e\u0447\u0435\u043d\u044c \u0431\u044b\u0441\u0442\u0440\u044b\u0445 \u043b\u0435\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432, \u043e\u0442\u043b\u0438\u0447\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u043e\u0442 \u0434\u0440\u0443\u0433\u0438\u0445 \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c\u044e \u0441\u0433\u0435\u043d\u0435\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u0438 \u043d\u0435\u043e\u0431\u044b\u0447\u043d\u043e \u0433\u0438\u0431\u043a\u0438\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u043c \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043b\u0435\u0433\u043a\u043e \u0438 \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e \u0432\u0441\u0442\u0440\u0438\u0432\u0430\u0442\u044c \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u044b \u0432 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u043a\u043e\u0434\u043e\u0432\u0443\u044e \u0431\u0430\u0437\u0443. \u0421 \u0442\u0435\u0445 \u043f\u043e\u0440 \u043f\u0440\u043e\u0435\u043a\u0442 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0441\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e\u043c \u0438 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442 \u043e\u0441\u0442\u0430\u0432\u0430\u0442\u044c\u0441\u044f \u043f\u043b\u043e\u0449\u0430\u0434\u043a\u043e\u0439 \u0434\u043b\u044f \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u043e\u0432 \u0438 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0439 \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u0444\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u044b\u0445 \u0433\u0440\u0430\u043c\u043c\u0430\u0442\u0438\u043a \u0438 \u043a\u043e\u043d\u0435\u0447\u043d\u044b\u0445 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u043e\u0432.<\/p>\n<p>Glavne novosti v razli\u010dici 1.2:<\/p>\n<ul>\n<li>\n<p>Dodana je bila nova (poenostavljena) metoda preverjanja konca vhodnih podatkov<br \/>\n(\u0430\u043d\u0433\u043b. &laquo;EOF rule&raquo;).<br \/>\nZa to je bila dodana konfiguracija re2c:eof,<br \/>\nki omogo\u010da izbiro terminalnega znaka,<br \/>\nin posebno pravilo $, ki se spro\u017ei, \u010de leksik.<br \/>\nuspe\u0161no dose\u017ee konec vhodnih podatkov.<br \/>\nZgodovinsko re2c ponuja ve\u010d na\u010dinov preverjanja<br \/>\nkonec vhodnih podatkov, ki se razlikujejo po omejenosti, u\u010dinkovitosti in enostavnosti<br \/>\nuporabe. Nova metoda je zasnovana za poenostavitev pisanja kode, hkrati pa<br \/>\nostaja u\u010dinkovita in \u0161iroko uporabna. Stare metode<br \/>\n\u0161e vedno delujejo in so lahko prednostne v nekaterih primerih.<\/p>\n<\/li>\n<li>\n<p>Dodana je mo\u017enost vklju\u010devanja zunanjih datotek z uporabo direktive<br \/>\n\/*!include:re2c &quot;file.re&quot; *\/, \u0433\u0434\u0435 file.re<br \/>\nto je ime vklju\u010dene datoteke. Re2c i\u0161\u010de datoteke v imeniku vklju\u010dene datoteke,<br \/>\nprav tako pa v seznamu poti, dolo\u010denih s pomo\u010djo mo\u017enosti -I.<br \/>\nVklju\u010dene datoteke lahko vklju\u010dujejo druge datoteke.<br \/>\nRe2c \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 &laquo;\u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0435&raquo; \u0444\u0430\u0439\u043b\u044b \u0432 \u0434\u0438\u0440\u0435\u043a\u0442\u043e\u0440\u0438\u0438 include\/<br \/>\n\u043f\u0440\u043e\u0435\u043a\u0442\u0430 &mdash; \u043f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0442\u0430\u043c \u0431\u0443\u0434\u0443\u0442 \u043d\u0430\u043a\u0430\u043f\u043b\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u043f\u043e\u043b\u0435\u0437\u043d\u044b\u0435 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f<br \/>\nrednih izrazov, nekaj v duhu standardne knji\u017enice.<br \/>\nZaenkrat je na pro\u0161nje uporabnikov dodana ena datoteka z definicijami kategorij Unicode.<\/p>\n<\/li>\n<li>\n<p>Dodana je mo\u017enost generirati raziskovalne datoteke s poljubnim<br \/>\n\u0441\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435\u043c \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043e\u043f\u0446\u0438\u0439 -t &#8212;type-header (\u0438\u043b\u0438 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445<br \/>\nkonfiguracije) in novih direktiv \/*!header:re2c:on*\/ in<br \/>\n\/*!header:re2c:off*\/. \u042d\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043f\u043e\u043b\u0435\u0437\u043d\u043e \u0432 \u0441\u043b\u0443\u0447\u0430\u044f\u0445,<br \/>\nko re2c mora generirati definicije spremenljivk, struktur in makrov,<br \/>\nki se uporabljajo v drugih enotah prevajanja.<\/p>\n<\/li>\n<li>\n<p>Re2c zdaj razume UTF8-literalne in razrede znakov v rednih izrazih.<br \/>\n\u041f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e, re2c \u043f\u0430\u0440\u0441\u0438\u0442 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0432\u0440\u043e\u0434\u0435 &quot;\u2200x \u2203y&quot; \u043a\u0430\u043a.<br \/>\nzaporedje 1-bitnih ASCII simbolov e2 88 80 78 20 e2 88 83 79<br \/>\n(heks-kode), in uporabniki morajo ro\u010dno pobegniti Unicode-znake:<br \/>\n&quot;u2200x u2203y&quot;. \u042d\u0442\u043e \u043e\u0447\u0435\u043d\u044c \u043d\u0435\u0443\u0434\u043e\u0431\u043d\u043e \u0438 \u043d\u0435\u043e\u0436\u0438\u0434\u0430\u043d\u043d\u043e \u0434\u043b\u044f \u043c\u043d\u043e\u0433\u0438\u0445<br \/>\nuporabnike (kar dokazuje stalno poro\u010danje o napakah). Zato zdaj<br \/>\nre2c \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043e\u043f\u0446\u0438\u044e &#8212;input-encoding &lt;ascii | utf8&gt;,<br \/>\n\u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0438 \u0440\u0430\u0441\u043f\u0430\u0440\u0441\u0438\u0442\u044c &quot;\u2200x \u2203y&quot; \u043a\u0430\u043a<br \/>\n2200 78 20 2203 79.<\/p>\n<\/li>\n<li>\n<p>Re2c \u0442\u0435\u043f\u0435\u0440\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043e\u0431\u044b\u0447\u043d\u044b\u0435 re2c-\u0431\u043b\u043e\u043a\u0438 \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 -r &#8212;reuse.<br \/>\nTo je priro\u010dno, \u010de vhodna datoteka vsebuje veliko blokov, in le del njih<br \/>\npotrebuje ponovno uporabo.<\/p>\n<\/li>\n<li>\n<p>Pojavila se je mo\u017enost nastavitve formata opozoril in sporo\u010dil o napakah<br \/>\n\u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043d\u043e\u0432\u043e\u0439 \u043e\u043f\u0446\u0438\u0438 &#8212;location-format &lt;gnu | msvc&gt;. GNU-\u0444\u043e\u0440\u043c\u0430\u0442 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0435\u0442\u0441\u044f<br \/>\n\u043a\u0430\u043a filename:line:column:, \u0430 MSVC-\u0444\u043e\u0440\u043c\u0430\u0442 &mdash; \u043a\u0430\u043a filename(line,column).<br \/>\nTa mo\u017enost je lahko koristna ljubiteljem IDE.<br \/>\n\u0422\u0430\u043a\u0436\u0435 \u0431\u044b\u043b\u0430 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043e\u043f\u0446\u0438\u044f &#8212;verbose, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0432\u044b\u0432\u043e\u0434\u0438\u0442 \u043a\u0440\u0430\u0442\u043a\u043e\u0435 \u043f\u043e\u0431\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u0435 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0443\u0441\u043f\u0435\u0445\u0430.<\/p>\n<\/li>\n<li>\n<p>\u0411\u044b\u043b \u0434\u043e\u0440\u0430\u0431\u043e\u0442\u0430\u043d \u0440\u0435\u0436\u0438\u043c &laquo;\u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u0441\u0442\u0438&raquo; \u0441 flex &mdash; \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u044b \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u0438<br \/>\nnapa\u010dna prioriteta operatorjev v redkih primerih.<br \/>\n\u0418\u0441\u0442\u043e\u0440\u0438\u0447\u0435\u0441\u043a\u0438 \u043e\u043f\u0446\u0438\u044f -F &#8212;flex-support \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u0438\u0441\u0430\u0442\u044c \u043a\u043e\u0434<br \/>\nv me\u0161anem slogu flex in re2c, kar nekoliko ote\u017ei sintakti\u010dno analizo.<br \/>\nNa\u010din zdru\u017eljivosti s flex redko uporablja nov koda,<br \/>\na re2c ga \u0161e naprej podpira za obratno zdru\u017eljivost.<\/p>\n<\/li>\n<li>\n<p>Operater od\u0161tevanja simbolnih razredov \/ se zdaj uporablja<br \/>\npred razvojem kodiranja, ki omogo\u010da njegovo uporabo v ve\u010d primerih,<br \/>\n\u010de se uporablja kodiranje z spremenljivo dol\u017eino znaka (na primer UTF8).<\/p>\n<\/li>\n<li>\n<p>Izhodna datoteka se zdaj ustvari atomarno: re2c najprej ustvari za\u010dasno datoteko<br \/>\nin vanjo zapi\u0161e rezultat, nato pa preimenuje za\u010dasno datoteko v izhodno<br \/>\nv enem koraku.<\/p>\n<\/li>\n<li>\n<p>Dokumentacija je bila dopisana in prepisana; zlasti so dodane nove<br \/>\n<noindex>poglavje <a rel=\"nofollow\" href=\"http:\/\/re2c.org\/manual\/manual.html#buffer-refilling\">o polnjenju bli\u017enjega pomnilnika<\/a><\/noindex><br \/>\nin <a rel=\"nofollow\" href=\"http:\/\/re2c.org\/manual\/manual.html#eof-handling\">o na\u010dinih preverjanja konca vhodnih podatkov<\/a>.<br \/>\nNova dokumentacija je zbrana v obliki<br \/>\n<a rel=\"nofollow\" href=\"http:\/\/re2c.org\/manual\/manual.html\">iz\u010drpnega enostranskega priro\u010dnika<\/a><br \/>\ns primeri (isti izvorni kodo se prika\u017ee v manpage in v spletnem dokumentu).<br \/>\nBile so narejene \u0161ibke poskuse izbolj\u0161ati berljivost spletne strani na telefonih.<\/p>\n<\/li>\n<li>\n<p>Z vidika razvijalcev je re2c pridobil bolj celovito podsystemsko<br \/>\nodpravljanje napak. Koda za odpravljanje napak je zdaj onemogo\u010dena v izdajalnih gradnjah in<br \/>\n\u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0432\u043a\u043b\u044e\u0447\u0435\u043d \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e configure-\u043e\u043f\u0446\u0438\u0438 &#8212;enable-debug.<\/p>\n<\/li>\n<\/ul>\n<p>\u042d\u0442\u043e\u0442 \u0440\u0435\u043b\u0438\u0437 \u0437\u0430\u043d\u044f\u043b \u0434\u043e\u043b\u0433\u043e\u0435 \u0432\u0440\u0435\u043c\u044f &mdash; \u043f\u043e\u0447\u0442\u0438 \u0446\u0435\u043b\u044b\u0439 \u0433\u043e\u0434.<br \/>\nVe\u010dina \u010dasa, kot vedno, je \u0161la za razvojem teoreti\u010dne osnove in pisanje<br \/>\n\u010dlanka <a rel=\"nofollow\" href=\"http:\/\/re2c.org\/2019_borsotti_trofimovich_efficient_posix_submatch_extraction_on_nfa.pdf\">&laquo;Efficient POSIX Submatch Extraction on NFA&raquo;<\/a>.<br \/>\nAlgoritmi, opisani v \u010dlanku, so uresni\u010deni v eksperimentalni knji\u017enici libre2c<br \/>\n(kompilacija biblioteke i benchmarka je prema zadanim postavkama isklju\u010dena i uklju\u010duje se configure opcijom<br \/>\n&#8212;enable-libs). \u0411\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0437\u0430\u0434\u0443\u043c\u0430\u043d\u0430 \u043d\u0435 \u043a\u0430\u043a \u043a\u043e\u043d\u043a\u0443\u0440\u0435\u043d\u0442 \u0443\u0436\u0435 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u043c<br \/>\nprojektima poput RE2, ve\u0107 kao istra\u017eiva\u010dka platforma za razvoj novih<br \/>\nalgoritama (koji se potom mogu koristiti u re2c ili drugim projektima).<br \/>\nTako\u0111er je korisno s aspekta testiranja, benchmarka i izrade poveznica na druge jezike.<\/p>\n<p>Zahvaljujemo od developera re2c svima koji su pomogli da ovaj izdanak postane stvarnost,<br \/>\ni u cjelini zajednici za ideje, izvje\u0161taje o gre\u0161kama, zakrpe, borbeni duh itd. ;]<\/p>\n<p>Izvor: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"http:\/\/www.linux.org.ru\/news\/development\/15144630\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u044f\u0442\u043d\u0438\u0446\u0443 2-\u0433\u043e \u0430\u0432\u0433\u0443\u0441\u0442\u0430 \u0432\u044b\u0448\u0435\u043b \u0440\u0435\u043b\u0438\u0437 re2c &mdash; \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u0430 \u043b\u0435\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432 \u0434\u043b\u044f \u044f\u0437\u044b\u043a\u043e\u0432 C \u0438 C++. \u041d\u0430\u043f\u043e\u043c\u043d\u0438\u043c, \u0447\u0442\u043e re2c \u0431\u044b\u043b \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u0432 1993 \u0433\u043e\u0434\u0443 \u041f\u0438\u0442\u0435\u0440\u043e\u043c \u0411\u0430\u043c\u0431\u0443\u043b\u0438\u0441\u043e\u043c \u043a\u0430\u043a \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0439 \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440 \u043e\u0447\u0435\u043d\u044c \u0431\u044b\u0441\u0442\u0440\u044b\u0445 \u043b\u0435\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432, \u043e\u0442\u043b\u0438\u0447\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u043e\u0442 \u0434\u0440\u0443\u0433\u0438\u0445 \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432 \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c\u044e \u0441\u0433\u0435\u043d\u0435\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0430 \u0438 \u043d\u0435\u043e\u0431\u044b\u0447\u043d\u043e \u0433\u0438\u0431\u043a\u0438\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u043c \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043b\u0435\u0433\u043a\u043e \u0438 \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e \u0432\u0441\u0442\u0440\u0438\u0432\u0430\u0442\u044c \u0430\u043d\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u044b \u0432 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-36759","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u044f\u0442\u043d\u0438\u0446\u0443 2-\u0433\u043e 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