Regular Expressions 101

Non-Capturing Group(?:\G(?!^)|STUFF)

1st Alternative\G(?!^)

\Gstart of current search

Negative Lookahead(?!^)

^start of line

2nd AlternativeSTUFF

STUFFthe literal text STUFF (case insensitive)

\s+any whitespace character, repeated at least once

\Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match

Non-Capturing Group(?:(?!end)[a-z0-9(),]){1,16}

{1,16}repeats the group contents below between 1 and 16 times:

Negative Lookahead(?!end)

endthe literal text end (case insensitive)

Character Class[a-z0-9(),]

a-zone character from a (97₁₀) to z (122₁₀) (case insensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

(the literal ( (40₁₀ / 50₈ / 28₁₆)

)the literal ) (41₁₀ / 51₈ / 29₁₆)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Positive Lookahead(?=.*?end)

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

endthe literal text end (case insensitive)

Global pattern flags

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

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?:\G(?!^)|STUFF)\s+\K(?:(?!end)[a-z0-9(),]){1,16}(?=.*?end)

New

THINGS H X F N AB end STUFF H X4 O 9D I,8U JK(S) XD LMJIK END OTHER_STUFF .AS VFD F123 SDF1 SDF4... end