regex101: PCRE (Legacy) Match Workspace

Pro

^start of line

Non-Capturing Group(?:(?!@2=[^@]*@3=B3(?:[@>]|$)).)*

*repeats the group contents below any number of times:

Negative Lookahead(?!@2=[^@]*@3=B3(?:[@>]|$))

@2=the literal text @2=

Negated Character Class[^@]*

*matches any number of characters outside the set below:

@the literal @ (64₁₀ / 100₈ / 40₁₆)

@3=B3the literal text @3=B3 (case sensitive)

Non-Capturing Group(?:[@>]|$)

1st Alternative[@>]

Character Class[@>]

@the literal @ (64₁₀ / 100₈ / 40₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative$

$end of line

.any character (except for line terminators)

@2=the literal text @2=

Group 1([^@]*)

Negated Character Class[^@]*

*matches any number of characters outside the set below:

@the literal @ (64₁₀ / 100₈ / 40₁₆)

@3=B3the literal text @3=B3 (case sensitive)

Non-Capturing Group(?:[@>]|$)

1st Alternative[@>]

Character Class[@>]

@the literal @ (64₁₀ / 100₈ / 40₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative$

$end of line

Negative Lookahead(?!.*@2=(?!\1)[^@]*@3=B3(?:[@>]|$))

.*any character (except for line terminators), repeated any number of times

@2=the literal text @2=

Negative Lookahead(?!\1)

\1the text saved by group 1

Negated Character Class[^@]*

*matches any number of characters outside the set below:

@the literal @ (64₁₀ / 100₈ / 40₁₆)

@3=B3the literal text @3=B3 (case sensitive)

Non-Capturing Group(?:[@>]|$)

1st Alternative[@>]

Character Class[@>]

@the literal @ (64₁₀ / 100₈ / 40₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

2nd Alternative$

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

25 tokens

Regular Expression

^(?:(?!@2=[^@]*@3=B3(?:[@>]|$)).)*@2=([^@]*)@3=B3(?:[@>]|$)(?!.*@2=(?!\1)[^@]*@3=B3(?:[@>]|$))

New

@1=A1@2=A2@3=A3>>@1=B1@2=B2@3=B3>>@1=C1@2=C2@3=C3>>@1=B1@2=B2@3=B3
@1=A1@2=A2@3=A3>>@1=B1@2=B2@3=B3>>@1=C1@2=C2@3=C3

@1=A1@2=A2@3=A3>>@1=B1@2=B2@3=B3>>@1=C1@2=C2@3=C3>>@1=B1@2=B10@3=B3 @1=A1@2=A2@3=A3>>@1=B1@2=B2@3=B3>>@1=C1@2=C2@3=C3>>@1=B1@2=B10@3=B3>>@1=B1@2=B2@3=B3
@1=A1@2=B1@3=B3>>@1=B1@2=B2@3=B3>>@1=C1@2=B3@3=C3

Extraction

@1=A1@2=A2@3=A3>>@1=B1@2=B2@3=B3>>@1=C1@2=C2@3=C3>>@1=B1@2=B2@3=B3
@1=A1@2=A2@3=A3>>@1=B1@2=B2@3=B3>>@1=C1@2=C2@3=C3

@1=A1@2=A2@3=A3>>@1=B1@2=B2@3=B3>>@1=C1@2=C2@3=C3>>@1=B1@2=B10@3=B3 @1=A1@2=A2@3=A3>>@1=B1@2=B2@3=B3>>@1=C1@2=C2@3=C3>>@1=B1@2=B10@3=B3>>@1=B1@2=B2@3=B3
@1=A1@2=B1@3=B3>>@1=B1@2=B2@3=B3>>@1=C1@2=B3@3=C3