Regular Expressions 101

Group 1(begin[\s\S]*?\([\s\S]*?)

beginthe literal text begin (case sensitive)

Character Class[\s\S]*?

*?matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Character Class[\s\S]*?

*?matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

foothe literal text foo (case sensitive)

Group 2([\s\S]*?\)[\s\S]*)

Character Class[\s\S]*?

*?matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Character Class[\s\S]*

*matches any number of characters from the set below:

\sany whitespace character

\Sany non-whitespace character

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(begin[\s\S]*?\([\s\S]*?)foo([\s\S]*?\)[\s\S]*)

New

begin foo even spaces and maybe new line(
some text only replace foo foo bar foo, keep the rest
)
some more text not replace foo here

$1abc$2