regex101: PCRE (Legacy) Substitution Workspace

(?s)applies the following effective flags to the remainder of the pattern: gs

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

Non-Capturing Group(?:((?>.{1,32}(?:(?<=[^\S\r\n])[^\S\r\n]?|(?=\r?\n)|$|[^\S\r\n]))|.{1,32})(?:\r?\n)?|(?:\r?\n|$))

1st Alternative((?>.{1,32}(?:(?<=[^\S\r\n])[^\S\r\n]?|(?=\r?\n)|$|[^\S\r\n]))|.{1,32})(?:\r?\n)?

Group 1((?>.{1,32}(?:(?<=[^\S\r\n])[^\S\r\n]?|(?=\r?\n)|$|[^\S\r\n]))|.{1,32})

1st Alternative(?>.{1,32}(?:(?<=[^\S\r\n])[^\S\r\n]?|(?=\r?\n)|$|[^\S\r\n]))

Atomic Group(?>.{1,32}(?:(?<=[^\S\r\n])[^\S\r\n]?|(?=\r?\n)|$|[^\S\r\n]))

.{1,32}any character, repeated between 1 and 32 times

Non-Capturing Group(?:(?<=[^\S\r\n])[^\S\r\n]?|(?=\r?\n)|$|[^\S\r\n])

1st Alternative(?<=[^\S\r\n])[^\S\r\n]?

Positive Lookbehind(?<=[^\S\r\n])

Negated Character Class[^\S\r\n]

\Sany non-whitespace character

\ra carriage return (ASCII 13)

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

Negated Character Class[^\S\r\n]?

?matches at most one character outside the set below:

\Sany non-whitespace character

\ra carriage return (ASCII 13)

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

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

Positive Lookahead(?=\r?\n)

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

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

3rd Alternative$

$end of string, or before its final line terminator

4th Alternative[^\S\r\n]

Negated Character Class[^\S\r\n]

\Sany non-whitespace character

\ra carriage return (ASCII 13)

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

2nd Alternative.{1,32}

.{1,32}any character, repeated between 1 and 32 times

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

?repeats the group contents below at most once:

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

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

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

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$

$end of string, or before its final line terminator

Global pattern flags

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

Search reference

Regular Expression

(?s)(?:((?>.{1,32}(?:(?<=[^\S\r\n])[^\S\r\n]?|(?=\r?\n)|$|[^\S\r\n]))|.{1,32})(?:\r?\n)?|(?:\r?\n|$))

New

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Substitution

"$1"\r\n