Regular Expressions 101

Pro

Positive Lookbehind(?<=abcd[\s\S]*)

abcdthe literal text abcd (case sensitive)

Character Class[\s\S]*

*matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

a=the literal text a= (case sensitive)

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

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Positive Lookahead(?=[\s\S]*xyz)

Character Class[\s\S]*

*matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

xyzthe literal text xyz (case sensitive)

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.

26 tokens

(?<=abcd[\s\S]*)a=.*;(?=[\s\S]*xyz)

abcd
a=1;
some text
a=2; some text
b=3;
a=4;
xyz
a=5;
a=6;

abcd
a=1;
some text
a=2; some text
b=3;
a=4;
xyz
a=5;
a=6;