regex101: PCRE (Legacy) Substitution Workspace

1st Alternative(?m)((?:(?:^[ \t]*)?(?:\/\*[^*]*\*+(?:[^\/*][^*]*\*+)*\/(?:[ \t]*\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/)))?|\/\/(?:[^\\]|\\(?:\r?\n)?)*?(?:\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/))|(?=\r?\n))))+)

(?m)applies the following effective flags to the remainder of the pattern: gm

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Group 1((?:(?:^[ \t]*)?(?:\/\*[^*]*\*+(?:[^\/*][^*]*\*+)*\/(?:[ \t]*\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/)))?|\/\/(?:[^\\]|\\(?:\r?\n)?)*?(?:\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/))|(?=\r?\n))))+)

Non-Capturing Group(?:(?:^[ \t]*)?(?:\/\*[^*]*\*+(?:[^\/*][^*]*\*+)*\/(?:[ \t]*\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/)))?|\/\/(?:[^\\]|\\(?:\r?\n)?)*?(?:\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/))|(?=\r?\n))))+

+repeats the group contents below at least once:

Non-Capturing Group(?:^[ \t]*)?

?repeats the group contents below at most once:

^start of line

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

Non-Capturing Group(?:\/\*[^*]*\*+(?:[^\/*][^*]*\*+)*\/(?:[ \t]*\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/)))?|\/\/(?:[^\\]|\\(?:\r?\n)?)*?(?:\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/))|(?=\r?\n)))

1st Alternative\/\*[^*]*\*+(?:[^\/*][^*]*\*+)*\/(?:[ \t]*\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/)))?

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negated Character Class[^*]*

*matches any number of characters outside the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

\*+the literal * (42₁₀ / 52₈ / 2A₁₆) , repeated at least once

Non-Capturing Group(?:[^\/*][^*]*\*+)*

*repeats the group contents below any number of times:

Negated Character Class[^\/*]

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

*the literal * (42₁₀ / 52₈ / 2A₁₆)

Negated Character Class[^*]*

*matches any number of characters outside the set below:

*the literal * (42₁₀ / 52₈ / 2A₁₆)

\*+the literal * (42₁₀ / 52₈ / 2A₁₆) , repeated at least once

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:[ \t]*\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/)))?

?repeats the group contents below at most once:

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

\r?optionally matches a carriage return (ASCII 13)

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

Positive Lookahead(?=[ \t]*(?:\r?\n|\/\*|\/\/))

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

Non-Capturing Group(?:\r?\n|\/\*|\/\/)

1st Alternative\r?\n

\r?optionally matches a carriage return (ASCII 13)

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

2nd Alternative\/\*

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

3rd Alternative\/\/

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

2nd Alternative\/\/(?:[^\\]|\\(?:\r?\n)?)*?(?:\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/))|(?=\r?\n))

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:[^\\]|\\(?:\r?\n)?)*?

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

1st Alternative[^\\]

Negated Character Class[^\\]

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

2nd Alternative\\(?:\r?\n)?

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

Non-Capturing Group(?:\r?\n)?

Non-Capturing Group(?:\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/))|(?=\r?\n))

2nd Alternative((?:"[^"\\]*(?:\\[\S\s][^"\\]*)*"|'[^'\\]*(?:\\[\S\s][^'\\]*)*'|(?:\r?\n(?:(?=(?:^[ \t]*)?(?:\/\*|\/\/))|[^\/"'\\\r\n]*))+|[^\/"'\\\r\n]+)+|[\S\s][^\/"'\\\r\n]*)

Global pattern flags

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

25 tokens

Regular Expression

(?m)((?:(?:^[ \t]*)?(?:\/\*[^*]*\*+(?:[^\/*][^*]*\*+)*\/(?:[ \t]*\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/)))?|\/\/(?:[^\\]|\\(?:\r?\n)?)*?(?:\r?\n(?=[ \t]*(?:\r?\n|\/\*|\/\/))|(?=\r?\n))))+)|((?:"[^"\\]*(?:\\[\S\s][^"\\]*)*"|'[^'\\]*(?:\\[\S\s][^'\\]*)*'|(?:\r?\n(?:(?=(?:^[ \t]*)?(?:\/\*|\/\/))|[^\/"'\\\r\n]*))+|[^\/"'\\\r\n]+)+|[\S\s][^\/"'\\\r\n]*)

Unit Tests

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