Regular Expressions 101

Explanation

Pro

(?im)applies the following effective flags to the remainder of the pattern: gim

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Non-Capturing Group(?:^|[\n])

1st Alternative^

^start of line

2nd Alternative[\n]

Character Class[\n]

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

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

Non-Capturing Group(?:[\x24]|%(?:25%?)*24|\\u?0*(?:44|24))

1st Alternative[\x24]

Character Class[\x24]

\x24the literal $ (24₁₆ / 44₈ / 36₁₀)

2nd Alternative%(?:25%?)*24

%the literal % (37₁₀ / 45₈ / 25₁₆)

Non-Capturing Group(?:25%?)*

*repeats the group contents below any number of times:

25the literal text 25

%?optionally matches the literal % (37₁₀ / 45₈ / 25₁₆)

24the literal text 24

3rd Alternative\\u?0*(?:44|24)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

u?optionally matches the literal u (117₁₀ / 165₈ / 75₁₆) (case insensitive)

0*the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated any number of times

Non-Capturing Group(?:44|24)

1st Alternative44

44the literal text 44

2nd Alternative24

24the literal text 24

Non-Capturing Group(?:[\x7b]|%(?:25%?)*7b|\\u?0*(?:7b|173))

1st Alternative[\x7b]

Character Class[\x7b]

\x7bthe literal { (7B₁₆ / 173₈ / 123₁₀)

2nd Alternative%(?:25%?)*7b

%the literal % (37₁₀ / 45₈ / 25₁₆)

Non-Capturing Group(?:25%?)*

*repeats the group contents below any number of times:

25the literal text 25

%?optionally matches the literal % (37₁₀ / 45₈ / 25₁₆)

7bthe literal text 7b (case insensitive)

3rd Alternative\\u?0*(?:7b|173)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

u?optionally matches the literal u (117₁₀ / 165₈ / 75₁₆) (case insensitive)

0*the literal 0 (48₁₀ / 60₈ / 30₁₆) , repeated any number of times

Non-Capturing Group(?:7b|173)

1st Alternative7b

7bthe literal text 7b (case insensitive)

2nd Alternative173

173the literal text 173

Negated Character Class[^\n]*?

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

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

Group 1((?:j|%(?:25%?)*(?:4a|6a)|\\u?0*(?:112|6a|4a|152))[^\n]*?(?:n|%(?:25%?)*(?:4e|6e)|\\u?0*(?:4e|156|116|6e))[^\n]*?(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))[^\n]*?(?:[\x3a]|%(?:25%?)*3a|\\u?0*(?:72|3a))[^\n]*?((?:l|%(?:25%?)*(?:4c|6c)|\\u?0*(?:154|114|6c|4c))[^\n]*?(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:a|%(?:25%?)*(?:41|61)|\\u?0*(?:101|61|41|141))[^\n]*?(?:p|%(?:25%?)*(?:50|70)|\\u?0*(?:70|50|160|120))(?:[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163)))?|(?:r|%(?:25%?)*(?:52|72)|\\u?0*(?:122|72|52|162))[^\n]*?(?:m|%(?:25%?)*(?:4d|6d)|\\u?0*(?:4d|155|115|6d))[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))|(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:n|%(?:25%?)*(?:4e|6e)|\\u?0*(?:4e|156|116|6e))[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163))|(?:n|%(?:25%?)*(?:4e|6e)|\\u?0*(?:4e|156|116|6e))[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163))|(?:[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))){2}[^\n]*?(?:o|%(?:25%?)*(?:4f|6f)|\\u?0*(?:6f|4f|157|117))[^\n]*?(?:p|%(?:25%?)*(?:50|70)|\\u?0*(?:70|50|160|120))|(?:c|%(?:25%?)*(?:43|63)|\\u?0*(?:143|103|63|43))[^\n]*?(?:o|%(?:25%?)*(?:4f|6f)|\\u?0*(?:6f|4f|157|117))[^\n]*?(?:r|%(?:25%?)*(?:52|72)|\\u?0*(?:122|72|52|162))[^\n]*?(?:b|%(?:25%?)*(?:42|62)|\\u?0*(?:102|62|42|142))[^\n]*?(?:a|%(?:25%?)*(?:41|61)|\\u?0*(?:101|61|41|141))|(?:n|%(?:25%?)*(?:4e|6e)|\\u?0*(?:4e|156|116|6e))[^\n]*?(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163))|(?:h|%(?:25%?)*(?:48|68)|\\u?0*(?:110|68|48|150))(?:[^\n]*?(?:t|%(?:25%?)*(?:54|74)|\\u?0*(?:124|74|54|164))){2}[^\n]*?(?:p|%(?:25%?)*(?:50|70)|\\u?0*(?:70|50|160|120))(?:[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163)))?)[^\n]*?(?:[\x3a]|%(?:25%?)*3a|\\u?0*(?:72|3a))|(?:b|%(?:25%?)*(?:42|62)|\\u?0*(?:102|62|42|142))[^\n]*?(?:a|%(?:25%?)*(?:41|61)|\\u?0*(?:101|61|41|141))[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163))[^\n]*?(?:e|%(?:25%?)*(?:45|65)|\\u?0*(?:45|145|105|65))[^\n]*?(?:[\x3a]|%(?:25%?)*3a|\\u?0*(?:72|3a))(JH[s-v]|[\x2b\x2f-9A-Za-z][CSiy]R7|[\x2b\x2f-9A-Za-z]{2}[048AEIMQUYcgkosw]ke[\x2b\x2f-9w-z]))

1st Alternative(?:j|%(?:25%?)*(?:4a|6a)|\\u?0*(?:112|6a|4a|152))[^\n]*?(?:n|%(?:25%?)*(?:4e|6e)|\\u?0*(?:4e|156|116|6e))[^\n]*?(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))[^\n]*?(?:[\x3a]|%(?:25%?)*3a|\\u?0*(?:72|3a))[^\n]*?((?:l|%(?:25%?)*(?:4c|6c)|\\u?0*(?:154|114|6c|4c))[^\n]*?(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:a|%(?:25%?)*(?:41|61)|\\u?0*(?:101|61|41|141))[^\n]*?(?:p|%(?:25%?)*(?:50|70)|\\u?0*(?:70|50|160|120))(?:[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163)))?|(?:r|%(?:25%?)*(?:52|72)|\\u?0*(?:122|72|52|162))[^\n]*?(?:m|%(?:25%?)*(?:4d|6d)|\\u?0*(?:4d|155|115|6d))[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))|(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:n|%(?:25%?)*(?:4e|6e)|\\u?0*(?:4e|156|116|6e))[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163))|(?:n|%(?:25%?)*(?:4e|6e)|\\u?0*(?:4e|156|116|6e))[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163))|(?:[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))){2}[^\n]*?(?:o|%(?:25%?)*(?:4f|6f)|\\u?0*(?:6f|4f|157|117))[^\n]*?(?:p|%(?:25%?)*(?:50|70)|\\u?0*(?:70|50|160|120))|(?:c|%(?:25%?)*(?:43|63)|\\u?0*(?:143|103|63|43))[^\n]*?(?:o|%(?:25%?)*(?:4f|6f)|\\u?0*(?:6f|4f|157|117))[^\n]*?(?:r|%(?:25%?)*(?:52|72)|\\u?0*(?:122|72|52|162))[^\n]*?(?:b|%(?:25%?)*(?:42|62)|\\u?0*(?:102|62|42|142))[^\n]*?(?:a|%(?:25%?)*(?:41|61)|\\u?0*(?:101|61|41|141))|(?:n|%(?:25%?)*(?:4e|6e)|\\u?0*(?:4e|156|116|6e))[^\n]*?(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163))|(?:h|%(?:25%?)*(?:48|68)|\\u?0*(?:110|68|48|150))(?:[^\n]*?(?:t|%(?:25%?)*(?:54|74)|\\u?0*(?:124|74|54|164))){2}[^\n]*?(?:p|%(?:25%?)*(?:50|70)|\\u?0*(?:70|50|160|120))(?:[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163)))?)[^\n]*?(?:[\x3a]|%(?:25%?)*3a|\\u?0*(?:72|3a))

2nd Alternative(?:b|%(?:25%?)*(?:42|62)|\\u?0*(?:102|62|42|142))[^\n]*?(?:a|%(?:25%?)*(?:41|61)|\\u?0*(?:101|61|41|141))[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163))[^\n]*?(?:e|%(?:25%?)*(?:45|65)|\\u?0*(?:45|145|105|65))[^\n]*?(?:[\x3a]|%(?:25%?)*3a|\\u?0*(?:72|3a))(JH[s-v]|[\x2b\x2f-9A-Za-z][CSiy]R7|[\x2b\x2f-9A-Za-z]{2}[048AEIMQUYcgkosw]ke[\x2b\x2f-9w-z])

Global pattern flags

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

Unit Test Summary

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Quick Reference

25 tokens

Regular Expression

(?im)(?:^|[\n]).*?(?:[\x24]|%(?:25%?)*24|\\u?0*(?:44|24))(?:[\x7b]|%(?:25%?)*7b|\\u?0*(?:7b|173))[^\n]*?((?:j|%(?:25%?)*(?:4a|6a)|\\u?0*(?:112|6a|4a|152))[^\n]*?(?:n|%(?:25%?)*(?:4e|6e)|\\u?0*(?:4e|156|116|6e))[^\n]*?(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))[^\n]*?(?:[\x3a]|%(?:25%?)*3a|\\u?0*(?:72|3a))[^\n]*?((?:l|%(?:25%?)*(?:4c|6c)|\\u?0*(?:154|114|6c|4c))[^\n]*?(?:d|%(?:25%?)*(?:44|64)|\\u?0*(?:44|144|104|64))[^\n]*?(?:a|%(?:25%?)*(?:41|61)|\\u?0*(?:101|61|41|141))[^\n]*?(?:p|%(?:25%?)*(?:50|70)|\\u?0*(?:70|50|160|120))(?:[^\n]*?(?:[s\x{17f}]|%(?:25%?)*(?:53|73|C5%(?:25%?)*BF)|\\u?0*(?:17f|123|577|73|53|163)))?|(?:r|%(?:25%?)*(?:52|72)|\\u?0*(?:122|72|52|162))[^\n]*?(?:m|%(?:25%?)*(?:4d|6d)|\\u?0*(?:4d|155|115|6d))[^\n]*?(?:[i\x{130}\x{131}]|%(?:25%?)*(?:49|69|C4%(?:25%?)*B0|C4%(?:25%?)*B1)|\\u?0*(?:111|69|49|151|130|460|131|461))|(?:d|%(?:25%?)*(?:44|64)|\\

Unit Tests

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