Regular Expressions 101

<source>the literal text <source> (case sensitive)

Group 1([^<]*)

Negated Character Class[^<]*

*matches any number of characters outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

source>the literal text source> (case sensitive)

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

<translation>the literal text <translation> (case sensitive)

Negative Lookahead(?!\1<)

\1the text saved by group 1

<the literal < (60₁₀ / 74₈ / 3C₁₆)

Group 2([^<]*)

Negated Character Class[^<]*

*matches any number of characters outside the set below:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

translation>the literal text translation> (case sensitive)

Global pattern flags

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

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Search reference

Regular Expression

<source>([^<]*)<\/source>\s*<translation>(?!\1<)([^<]*)<\/translation>

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