Regular Expressions 101

Explanation

Pro

Positive Lookbehind(?<=\n{2}|^)

1st Alternative\n{2}

\n{2}a line-feed (newline) character (ASCII 10), repeated exactly 2 times

2nd Alternative^

^start of string

Non-Capturing Group(?:(?:-|\d+\.) +.*\n?)+

+repeats the group contents below at least once:

Non-Capturing Group(?:-|\d+\.)

1st Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

2nd Alternative\d+\.

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

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

\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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

25 tokens

Regular Expression

(?<=\n{2}|^)(?:(?:-|\d+\.) +.*\n?)+

New

- one

some text
- should not start a list

- should start
- should continue

5. should also
6. more



5. should also
6. more
7. more
8. sdfs
9. sdfsf
10. sdfdsf

Extraction

- one

some text
- should not start a list

- should start
- should continue

5. should also
6. more



5. should also
6. more
7. more
8. sdfs
9. sdfsf
10. sdfdsf