Regular Expressions 101

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

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

Group 1(my_folder/(?:[^/\n]+/)*[^/\n]+\.xml)

my_folder/the literal text my_folder/ (case sensitive)

Non-Capturing Group(?:[^/\n]+/)*

*repeats the group contents below any number of times:

Negated Character Class[^/\n]+

+matches at least one character outside the set below:

/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Negated Character Class[^/\n]+

+matches at least one character outside the set below:

/the literal / (47₁₀ / 57₈ / 2F₁₆)

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

xmlthe literal text xml (case sensitive)

::the literal text ::

Negative Lookahead(?!.*\1)

.*any character, repeated any number of times

\1the text saved by group 1

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.

Search reference

Regular Expression

(?s)(my_folder/(?:[^/\n]+/)*[^/\n]+\.xml)::(?!.*\1)

New

 my_folder/foo.xml::someextracontent
 my_folder/foo.xml::someextracontent
 another_folder/foo.xml::someextracontent
 my_folder/bar.xml::someextracontent
 my_folder/bar.xml::someextracontent
 my_folder/hello.xml::someextracontent


my_folder/test1/test2/bar.xml::someextracontent
my_folder/test1/test2/bar.xml::someextracontent

Regular Expression

Substitution