Markdown Horizontal Rule

Matches a Markdown horizontal rule — three or more dashes, asterisks, or underscores on a line.

✓ Markdown parsers✓ Section detection✓ Document structure analysis

Test String

5 matches

---
***
___
- - -
* * *

^^— ^ — start of string (or line in multiline mode)

(…)Group #1— Capturing group — captures matched text for reuse or extraction

[…]Character class […]— Matches any single character listed in this set

\s*space— \s — whitespace (space, tab, newline…) — repeated zero or more times (greedy) · * — zero or more times (greedy)

\1\1— \1 — escaped character '1'

\s*space— \s — whitespace (space, tab, newline…) — repeated zero or more times (greedy) · * — zero or more times (greedy)

\1\1— \1 — escaped character '1'

[…]*Character class […]— Matches any single character listed in this set — repeated zero or more times (greedy) · * — zero or more times (greedy)

\sspace— \s — whitespace (space, tab, newline…)

\1\1— \1 — escaped character

$$— $ — end of string (or line in multiline mode)

Pattern: 26 charsInput: 23 chars

100% client-side · private

✓ Valid Examples