}

  public void testRetainFrom() {
    assertEquals("aaa", is('a').retainFrom("bazaar"));
    assertEquals("z", is('z').retainFrom("bazaar"));
    assertEquals("!", is('!').retainFrom("!@#$%^&*()-="));
    assertEquals("", is('x').retainFrom("bazaar"));
    assertEquals("", is('a').retainFrom(""));
  }

  public void testPrecomputedOptimizations() {

中国

// xn--fiqz9s ("Zhongguo/China", Chinese, Traditional) : CN
// CNNIC
// http://cnnic.cn/html/Dir/2005/10/11/3218.htm
中國

// xn--lgbbat1ad8j ("Algeria/Al Jazair", Arabic) : DZ
الجزائر

// xn--wgbh1c ("Egypt/Masr", Arabic) : EG
// http://www.dotmasr.eg/
مصر

// xn--e1a4c ("eu", Cyrillic) : EU
// https://eurid.eu
ею

  }

  public void testRetainFrom() {
    assertEquals("aaa", is('a').retainFrom("bazaar"));
    assertEquals("z", is('z').retainFrom("bazaar"));
    assertEquals("!", is('!').retainFrom("!@#$%^&*()-="));
    assertEquals("", is('x').retainFrom("bazaar"));
    assertEquals("", is('a').retainFrom(""));
  }

  public void testPrecomputedOptimizations() {

/S,IAGDjC,EAAI+C,EAAK/C,IAChB,GAAO+Q,EAAU3J,EAAKwH,SAAUuE,EAAQnT,GAAIR,MAC3CuU,EAAW,CAAE5J,EAAe2J,EAAgBC,GAAYhD,QAClD,CAIN,IAHAA,EAAU3J,EAAKsG,OAAQyF,EAAQnT,GAAIR,MAAOhB,MAAO,KAAM2U,EAAQnT,GAAIyF,UAGrD1B,GAAY,CAIzB,IADAf,IAAMhD,EACEgD,EAAID,EAAKC,IAChB,GAAKoE,EAAKwH,SAAUuE,EAAQnQ,GAAIxD,MAC/B,MAGF,OAAO2U,GACF,EAAJnU,GAAS8T,EAAgBC,GACrB,EAAJ/T,GAAS0L,EAGRyH,EAAOhV,MAAO,EAAG6B,EAAI,GACnBzB,OAAQ,CAAEqH,MAAgC,MAAzBuN,EAAQnT,EAAI,GAAIR,KAAe,IAAM,MACvD0E,QAASkC,GAAU,MACrB2K,EACA/Q,EAAIgD,GAAK+R,GAAmB5...

    return count;
  }

  /**
   * Returns a string containing all non-matching characters of a character sequence, in order. For
   * example:
   *
   * {@snippet :
   * CharMatcher.is('a').removeFrom("bazaar")
   * }
   *
   * ... returns {@code "bzr"}.
   */
  public String removeFrom(CharSequence sequence) {
    String string = sequence.toString();
    int pos = indexIn(string);
    if (pos == -1) {

YADArpB,EAAKqpB,SAAS,CAAEC,IAAKH,EAAQI,SAAU,WAKzCvpB,EAAKud,UAAY4L,CACnB,KAEJ,CAEAL,kBACE,MAAMtQ,EAAU,CACdxY,KAAM0F,KAAK0iB,aACXJ,UAAWtiB,KAAK0F,QAAQ4c,UACxBF,WAAYpiB,KAAK0F,QAAQ0c,YAG3B,OAAO,IAAI0B,sBAAqB3iB,GAAWnB,KAAK+jB,kBAAkB5iB,IAAU2R,EAC9E,CAGAiR,kBAAkB5iB,GAChB,MAAM6iB,EAAgB1H,GAAStc,KAAKwiB,aAAaprB,IAAK,IAAGklB,EAAMrf,OAAO5E,MAChEyc,EAAWwH,IACftc,KAAK6iB,oBAAoBC,gBAAkBxG,EAAMrf,OAAOymB,UACxD1jB,KAAKikB,SAASD,EAAc1H,GAAO,EAG/ByG,GAAmB/iB,KAAK0iB,cAAgB3pB,SAASoB,iBAAiB0d,UAClEqM,EAAkBnB,G...

/S,IAGDjC,EAAI+C,EAAK/C,IAChB,GAAO+Q,EAAU3J,EAAKwH,SAAUuE,EAAQnT,GAAIR,MAC3CuU,EAAW,CAAE5J,EAAe2J,EAAgBC,GAAYhD,QAClD,CAIN,IAHAA,EAAU3J,EAAKsG,OAAQyF,EAAQnT,GAAIR,MAAOhB,MAAO,KAAM2U,EAAQnT,GAAIyF,UAGrD1B,GAAY,CAIzB,IADAf,IAAMhD,EACEgD,EAAID,EAAKC,IAChB,GAAKoE,EAAKwH,SAAUuE,EAAQnQ,GAAIxD,MAC/B,MAGF,OAAO2U,GACF,EAAJnU,GAAS8T,EAAgBC,GACrB,EAAJ/T,GAAS0L,EAGRyH,EAAOhV,MAAO,EAAG6B,EAAI,GACnBzB,OAAQ,CAAEqH,MAAgC,MAAzBuN,EAAQnT,EAAI,GAAIR,KAAe,IAAM,MACvD0E,QAASkC,GAAU,MACrB2K,EACA/Q,EAAIgD,GAAK+R,GAAmB5...

K6H,OAEnBxf,MA8XXwwB,GAAQzR,IAhXR,SAAexe,EAAO6K,GAClB,OAAOwjB,GAAc5uB,KAAMO,EAAO6K,EAAO,IAgX7ColB,GAAQzN,SA5WR,SAAoBxiB,EAAO6K,GACvB,OAAOwjB,GAAc5uB,KAAMO,EAAO6K,GAAQ,IA4W9ColB,GAAQtB,GA/RR,SAAY9kB,GACR,IAAKpK,KAAK4D,UACN,OAAOc,IAEX,IAAImb,EACAhR,EACAiR,EAAe9f,KAAKkgB,cAIxB,GAAc,WAFd9V,EAAQD,EAAeC,KAEY,YAAVA,GAAiC,SAAVA,EAG5C,OAFAyV,EAAO7f,KAAKmgB,MAAQL,EAAe,MACnCjR,EAAS7O,KAAKogB,QAAU0O,GAAajP,GAC7BzV,GACJ,IAAK,QACD,OAAOyE,EACX,IAAK,UACD,OAAOA,EAAS,EACpB,IAAK,OACD,OAAOA,EAAS,QAKxB,OADAgR,EAAO7f...

AGXC,EAAqBlE,UAAE6C,GAAF,OAErBoD,EAAoB,SASpBC,EAA8B,0BAI9BC,EAAiB,6BAEjBC,EAAkB,OAMlBC,aACJ,SAAAA,EAAY9G,GACV2D,KAAKkB,SAAW7E,EAChB2D,KAAKoD,0BAA2B,E,yBASlCC,SAAA,WACE,IAAIC,GAAqB,EACrBC,GAAiB,EACfnC,EAActE,UAAEkD,KAAKkB,UAAUU,QA1BX,2BA0B0C,GAEpE,GAAIR,EAAa,CACf,IAAMoC,EAAQxD,KAAKkB,SAASxE,cAAcuG,GAE1C,GAAIO,EAAO,CACT,GAAmB,UAAfA,EAAMC,KACR,GAAID,EAAME,SAAW1D,KAAKkB,SAASyC,UAAUC,SAASb,GACpDO,GAAqB,MAChB,CACL,IAAMO,EAAgBzC,EAAY1E,cAhCtB,WAkCRmH,GACF/G,UAAE+G,GAAe7B,YAAYe,GAK/BO,IAEiB,aAAfE,EAAMC,...

AAA,QACA,MAAA,KA/FR,yDAuGM,OAAA,IAAA,MAAA,QACA,WAAA,oBAxGN,+DA2GQ,aAAA,QA3GR,sFA+GQ,QAAA,EAAA,QAAA,QACA,cAAA,SAhHR,2IAmHU,MAAA,KACA,YAAA,QApHV,kKAuHY,MAAA,eAvHZ,oJA8HY,OAAA,EACA,WAAA,IA/HZ,oFAqIQ,iBAAA,QACA,aAAA,QACA,MAAA,KACA,QAAA,EAAA,KACA,WAAA,OAzIR,4FA6IQ,MAAA,qBACA,MAAA,MACA,YAAA,IACA,aAAA,KAhJR,kGAmJU,MAAA,KAIJ,+HAAA,gIAIM,WAAA,IAJN,4FAAA,6FASI,WAAA,MjI2ulCV,kFiI34lCA,gFAwKQ,aAAA,QAxKR,4EA4KQ,OAAA,EA5KR,uFAkLI,cAAA,KAGF,oEAEI,0BAAA,EACA,uBAAA,EAIJ,6EAEI,2BAAA,EACA,wBAAA,EAMN,2EAEI,WAAA,KAK...