Matching two sets of strings from multi lines using Regex-CodePudding

Anyone can help me to create pattern in regex capturing as results/matches below? Tried the below pattern it works only if the next string is on the same line not with the nextline

 Pattern: (?<= <abc xyz=“123>\n<def id=“the_quick_brown_fox)(?s)[A-Z0-9]{9}

<abc xyz=“123>
<def id=“the_quick_brown_foxABC123456” the1andonly

Akfkfkfjfjfjf fkdkfkfkfkf dkdkfkfk
1445gkfkfkfk rkfkfkfkfk tkfkfkfk

<abc xyz=“123>
<def id=“the_quick_brown_foxDEF123456” the1andonly

Dkckfkfkf rifkfkqq fkfkfkqq tkfkfk
Qkekfjj ffkfkf krkfkfk wkkdkfkf rkfkf

<abc xyz=“123>
<def id=“the_quick_brown_foxGHI123456” the1andonly

Matched:
ABC123456
DEF123456
GHI123456

CodePudding user response：

You can use

<abc xyz=“123>\R<def id=“the_quick_brown_fox\s*\K[A-Z0-9]{9}

Details:

<abc xyz=“123> - a literal text
\R- line break
<def id=“the_quick_brown_fox - literal text
\s* - zero or more whitespaces
\K - forget the text matched so far
[A-Z0-9]{9} - nine alphanumerics.