Regular Expressions 101

Pro

(?si)applies the following effective flags to the remainder of the pattern: gmsi

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

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

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

<supthe literal text <sup (case insensitive)

Non-Capturing Group(?:\s[^>]+)?

?repeats the group contents below at most once:

\sany whitespace character

Negated Character Class[^>]+

+matches at least one character outside the set below:

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Negated Character Class[^<]*

*matches any number of characters outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

</sup>the literal text </sup> (case insensitive)

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

(?si)\s*<sup(?:\s[^>]+)?>[^<]*</sup>

New

Hello <sup foot_note="81277">1</sup> World
Hello <sup>som text here</sup> World
Hello <superscipt>som text here</superscipt> World