Regular Expressions 101

(?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

^start of line

=+the literal = (61₁₀ / 75₈ / 3D₁₆) , repeated at least once

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

Group 1(.*?)

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

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

*matches any number of characters outside the set below:

\Sany character that is not Unicode whitespace

\ra carriage return (ASCII 13)

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

=+the literal = (61₁₀ / 75₈ / 3D₁₆) , repeated at least once

\s*a Unicode whitespace character, repeated any number of times

Group 2(.*(?:\r?\n(?!=+.*?=).*)*)

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

Non-Capturing Group(?:\r?\n(?!=+.*?=).*)*

*repeats the group contents below any number of times:

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

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

Negative Lookahead(?!=+.*?=)

=+the literal = (61₁₀ / 75₈ / 3D₁₆) , repeated at least once

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

=the literal = (61₁₀ / 75₈ / 3D₁₆)

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

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.

25 tokens

Regular Expression

(?m)^=+[ \t]*(.*?)[^\S\r\n]*=+\s*(.*(?:\r?\n(?!=+.*?=).*)*)

New

== Title1 ==
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.............
.............
End of Paragraph
===Title2 ===
.............
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== Title1 ==
.............
.............
.............
End of Paragraph
===Title2 ===
.............
.............
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