Regular Expressions 101

^start of line

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

beginthe literal text begin (case sensitive)

Character Class[ \t]

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Negated Character Class[^<]*

*matches any number of characters outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

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

Character Class[\s\S]*?

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

\sa Unicode whitespace character

\Sany character that is not Unicode whitespace

^start of line

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

endthe literal text end (case sensitive)

Character Class[ \t]*

*matches any number of characters from the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

\ta tab character (ASCII 9)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

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

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Search reference

Regular Expression

^<[ \t]*begin[ \t]>[^<]*([\s\S]*?)^<[ \t]*end[ \t]*>

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