notepad++ 正则表达式搜索失败

Question

I try using the following to search some text and replace it by some other text starts with #. On regex101 it works fine but NotePad++ says search failed. Also tried to add \r before \n but didn't help.

regex: (class boy(?:.*\n)+\s*)(Height.*;\n)((?:.*\n)+})

Text to search:

class boy Mike
{
Age = 20;
PhoneNum = 658965;
Height = 198;
City = LA
}
note boy Joe
{
Age = 21;
PhoneNum = 558565;
Height = 178;
City = BA
}

class boy Joe
{
Age = 21;
PhoneNum = 558565;
Height = 178;
City = BA
}

Substitute: $1#$2$3

Output:

class boy Mike
{
Age = 20;
PhoneNum = 658965;
#Height = 198;
City = LA
}
note boy Joe
{
Age = 21;
PhoneNum = 558565;
Height = 178;
City = BA
}

class boy Joe
{
Age = 21;
PhoneNum = 558565;
#Height = 178;
City = BA
}

Answer 1

You can use

Find What : ^class boy.*(?:\R(?.}$)?*)*\R\K(?=Height)
Replace With : #
. matches newline : DISABLED

Details :

• ^ - start of line
• class boy - class boy and then any zero or more chars as few as possible
• .* - the rest of line
• (?:\R(?.}$).*)* - zero or more lines up to end of file or to a line that is equal to }
• \R - a line break sequence
• \K - omit the text matched
• (?=Height) - immediately on the right, there must be Height .

Answer 2

I have rewritten you regex so it doesn't use newline :

(?<=class boy \w+\s*\{[^}]+?)(Height[^;]+;)(?=[\s\S]+?\})

Use ' global ' and ' multiline ' options.

Replace with:

#$1

Explanation :

(?<=class boy \w+\s*\{[^}]+?) look behind for: class boy , a space and one or more word characters followed by one ore more white space (that includes newline). Then look for { followed by one or more characters not being } .

(Height[^;]+;) match 'Heigth' followed by one or more character not being ; - put the match in group 1.

(?=[\s\S]+?\}) look forward for any character followed by } .

Replace with # and group 1.

Answer 3

Another alternative...

Find; (class[\s\S]+?(?!note))(height)

Replace all: $1#$2$3