Regular Expressions 101

Group MutilineCommentNested(?<MutilineCommentNested> /\* [^*/]*+ (?> [^*/]++ | \*[^/] | /[^*] | (?&MutilineCommentNested) )*+ \*/ )

/the literal text /

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negated Character Class[^*/]*+

*+matches any number of characters outside the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Atomic Group(?> [^*/]++ | \*[^/] | /[^*] | (?&MutilineCommentNested) )*+

*+repeats the group contents below any number of times:

1st Alternative [^*/]++

Negated Character Class[^*/]++

++matches at least one character outside the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

2nd Alternative \*[^/]

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negated Character Class[^/]

/the literal / (47₁₀ / 57₈ / 2F₁₆)

3rd Alternative /[^*]

/the literal text /

Negated Character Class[^*]

*the literal * (42₁₀ / 52₈ / 2A₁₆)

4th Alternative (?&MutilineCommentNested)

(?&MutilineCommentNested)calls group MutilineCommentNested as a subroutine

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

/ the literal text /

Global pattern flags

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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

s modifier: single line. Allows a dot to match line terminators

X modifier: eXtra. A \ followed by a letter with no special meaning causes an error

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?<MutilineCommentNested>
/\*
  [^*/]*+
  (?> [^*/]++
    | \*[^/]
    | /[^*]
    | (?&MutilineCommentNested)
  )*+
\*/
)


ghjgh hfj
fghfg hfg

/*dfg fg ddf  
/*nes*ted1*/ 
/**/
 dfdf* /hgf  ghgfh *
gd  
/*nes/ted2*/ 
dfg*/

xcvsdgdf dfghdfg

sdfsdf