Regular Expressions 101

(?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

^start of line

#the literal # (35₁₀ / 43₈ / 23₁₆)

Character Class[0-9]{5,7}

{5,7}matches between 5 and 7 characters from the set below:

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

,the literal , (44₁₀ / 54₈ / 2C₁₆)

Group 1(.*)

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

Global pattern flags

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

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?im)^#[0-9]{5,7},(.*)

New

#12345, Some description1
#123456, Some description2
#1234567, Some description3