Regular Expressions 101

\Astart of string

Non-Capturing Group(?:!.*\n)+

+repeats the group contents below at least once:

!the literal ! (33₁₀ / 41₈ / 21₁₆)

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

\na line-feed (newline) character (ASCII 10)

!the literal ! (33₁₀ / 41₈ / 21₁₆)

\s*a Unicode whitespace character, repeated any number of times

Group 1(.*a\sb\sc\sd)

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

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

\sa Unicode whitespace character

bthe literal b (98₁₀ / 142₈ / 62₁₆) (case sensitive)

\sa Unicode whitespace character

cthe literal c (99₁₀ / 143₈ / 63₁₆) (case sensitive)

\sa Unicode whitespace character

dthe literal d (100₁₀ / 144₈ / 64₁₆) (case sensitive)

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

\A(?:!.*\n)+!\s*(.*a\sb\sc\sd)

New

! row 1
!that is row number 2
! - another row
! a b c d
0 1 2 3
4 5 6 7
8 9 10 11


desired output:
a b c d
0 1 2 3
4 5 6 7
8 9 10 11

\1

! row 1
!that is row number 2
! - another row
! a b c d
0 1 2 3
4 5 6 7
8 9 10 11


desired output:
a b c d
0 1 2 3
4 5 6 7
8 9 10 11