Regular Expressions 101

^start of line

Group 1(\h*\S.*)

\h*any horizontal whitespace character, repeated any number of times

\Sany non-whitespace character

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

Non-Capturing Group(?:\R\h*)*

*repeats the group contents below any number of times:

\Ra newline sequence

\h*any horizontal whitespace character, repeated any number of times

\Ra newline sequence

Group 2(\h*\S.*)

\h*any horizontal whitespace character, repeated any number of times

\Sany non-whitespace character

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

Non-Capturing Group(?:\R\h*)*

*repeats the group contents below any number of times:

\Ra newline sequence

\h*any horizontal whitespace character, repeated any number of times

Positive Lookahead(?=\R/{24})

\Ra newline sequence

/{24}the literal / (47₁₀ / 57₈ / 2F₁₆) , repeated exactly 24 times

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^(\h*\S.*)(?:\R\h*)*\R(\h*\S.*)(?:\R\h*)*(?=\R/{24})

New

1.58%
0009
1991
/////////////////////////
Phil
ttr0018

1991

/////////////////////////

$1 $2

1.58%
0009
1991
/////////////////////////
Phil
ttr0018

1991

/////////////////////////