Regular Expressions 101

^start of line

Group 1(\[[0-9]*]:)

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Character Class[0-9]*

*matches any number of characters from the set below:

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

]:the literal text ]:

Group 2(.*)

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

\r?optionally matches a carriage return (ASCII 13)

\n?optionally matches a line-feed (newline) character (ASCII 10)

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

^(\[[0-9]*]:)(.*)\r?\n?

New

this is a [link][1]
[1]: http://example.com
and this is a [good website][2] in my opinion
[2]: http://goodwebsite.com
[3]: http://example.com/fsadf.jpg
[![this is a photo][3]][3]
and there is some text hare ..!

Regular Expression

Extraction