Regular Expressions 101

Explanation

Pro

Group 1((?<!> )((\d{1,}\.|-|\/\/|\%\%|\#) )(\[[x ]\] )?)

Negative Lookbehind(?<!> )

> the literal text >

Group 2((\d{1,}\.|-|\/\/|\%\%|\#) )

Group 3(\d{1,}\.|-|\/\/|\%\%|\#)

1st Alternative\d{1,}\.

\d{1,}a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

2nd Alternative-

-the literal - (45₁₀ / 55₈ / 2D₁₆)

3rd Alternative\/\/

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

4th Alternative\%\%

\%the literal % (37₁₀ / 45₈ / 25₁₆)

5th Alternative\#

\#the literal # (35₁₀ / 43₈ / 23₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 4(\[[x ]\] )?

?repeats the group contents below at most once:

\[the literal [ (91₁₀ / 133₈ / 5B₁₆)

Character Class[x ]

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

the literal (32₁₀ / 40₈ / 20₁₆)

\]the literal ] (93₁₀ / 135₈ / 5D₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

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

Match Information

Detailed match information will be displayed here automatically.

Quick Reference

26 tokens

Regular Expression

((?<!> )((\d{1,}\.|-|\/\/|\%\%|\#) )(\[[x ]\] )?)

- 测试
- [ ] 测试
- [x] 测试
1. 测试
2. [ ] 测试
2. [x] 测试

- （✅）测试
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2. [x] （✅）测试

测试
- 测试
- [ ] 测试
- [x] 测试
<mark style="background: #ffcc33aa;">demo</mark> 测试

// 测试
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Extraction

- 测试
- [ ] 测试
- [x] 测试
1. 测试
2. [ ] 测试
2. [x] 测试

- （✅）测试
- [ ] （✅）测试
- [x] （✅）测试
1. （✅）测试
2. [ ] （✅）测试
2. [x] （✅）测试

测试
- 测试
- [ ] 测试
- [x] 测试
<mark style="background: #ffcc33aa;">demo</mark> 测试

// 测试
%% 测试 %%