经典正则表达式QRegexp的解析


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" 2.2 \1, \2... "( )" " (.*?)" " " " " "\" "\1" 1"\2" 2 …… "(" 1 " ('|")(.*?)(\1)" " 'Hello', "World" " " 'Hello' " " "World" " 2 " (\w)\1{4,} " "aa bbbb abcdefg ccccc 111121111 999999999" "ccccc" 999999999 "\w" 5 "\w{5,}" 3 " <(\w+)\s*(\w+(=('|").*?\4)?\s*)*>.*? " "" "" "" 2.3 "^" "$" "\b" " " " " " " " " "(?=xxxxx)" "(?!xxxxx)" "(?=xxxxx)" " " " " xxxxx "\b" "\b" 1 " Windows (?= NT |XP)" "Windows 98, Windows NT, Windows 2000" "Windows NT" "Windows " "Windows " 2 " (\w)((?= \1\1\1)(\1)) +" "aaa ffffff 999999999" 6"f" 4 9"9" 7 4 2 "(?!xxxxx)" xxxxx 3 " ((?!\bstop \b).)+" "fdjka ljfdl stop fjdsla fdj" "stop" "stop" 4 " do (?!\w)" "done, do, dog" "do" "do" "(?!\w)" "\b" "(?<=xxxxx)" "(? ]*)?> (.*?)<\s*\/\1\s*>
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