
K\

(1)^LN^
    \   ̕GXP[v
    .   Cӂ̈ꕶƃ}b`
    ^   s̐擪Ƀ}b`
    $   s̖Ƀ}b`
    *   O̗vf0ȏ}b`
    +   O̗vf1ȏ}b`
    ?   O̗vfɁC0܂1}b`
  [...] []̂ǂꂩ1Ƀ}b`([]̐擪^ꍇC[]ȊO̕Ƀ}b`)
  (...) K\̃O[v
    |   Oǂ炩̐K\Ƀ}b`

(2)GXP[vV[PX
    \n  s
    \r  A
    \t  ^u
    \f  y[W

(3)NX
    \d  ([0-9]Ɠ)
    \D  ȊO([^0-9]Ɠ)
    \w  P\([a-zA-Z_0-9]Ɠ)
    \W  P\ȊO([^a-zA-Z_0-9]Ɠ)
    \s  󔒕([ \t\f]Ɠ)
    \S  󔒕ȊO([^ \t\f]Ɠ)
    \l  󔒕 + s([ \t\f\r\n]Ɠ)

(4)ʎwq
  {n,m} nȏCmȉ
  {n,}  nȏ
  {n}   傤n
   *    0ȏ({0,}Ɠ)
   +    1ȏ({1,}Ɠ)
   ?    0܂1({0,1}Ɠ)
   (*)ʎwq̌?tƂ́CŒZ}b`s

(5)Q
   \1  PԖڂ̊ʂň͂܂ꂽvfɃ}b`(ȉ\2`\9l)
   \+  ʂň͂܂ꂽvfɍŌɃ}bg
   \&  }b`S
   \`  }b`̑Oɂ镶
   \'  }b`̌ɂ镶
   (*)úC\̑$p\

(6)[\
   \b  PꋫE
   \B  PꋫEȊO
   \A  eLXg̐擪
   \z  eLXg̖
   \Z  eLXg̖܂͉s̒O
   
   \=A I͈͂̐擪
   \=z I͈̖͂
   \=^ I͈͂̊es̐擪
   \=$ I͈͂̊es̖

(7)gK\
   (?#text)    Rg
   (?:...)     QƗp̕ۑsȂJbR
   (?=...)     lookahead assertion
   (?!...)     lookahead assertion̔ے
   (?<=...)    lookbehind assertion
   (?<!...)    lookbehind assertion̔ے
   (?>...)     obNgbNȂ
   (?(COND)IFTRUE|IFFALSE)  tWJ
   (?isS-isS)  p^[CqON/OFF
   (?isS-isS:) QƗp̕ۑsȂJbRɃp^[Cqw
   \K          \KO$&Ɋ܂߂Ȃ (keep pattern)

(8)POSIXNX
   [:ascii:]   0`127܂ł̕

(9)p^[Cq
   i: 啶ʂȂ
   s: .ɉsɂ}b`
   S: \sɉsɂ}b`

