1.`**-**`
2.`**1**`
3.`**1**-`
4.`**-**-`
5.`**1**1`
6.`**-**1`
以上六句 Markdown ，仅有第六句里的星号没被视作加粗，其他的都是加粗。为什么 V2EX 、github 等在内的部分解析器在解析类似的星号内以符号结尾，星号后以字符开头的文本时，不将其解释为加粗？
---
示例：[markdown-it demo]( https://markdown-it.github.io/#md3=%7B%22source%22%3A%221%3A%5Cn%2A%2A-%2A%2A%5Cn%5Cn2%3A%5Cn%2A%2A1%2A%2A%5Cn%5Cn3%3A%5Cn%2A%2A1%2A%2A-%5Cn%5Cn4%3A%5Cn%2A%2A-%2A%2A-%5Cn%5Cn5%3A%5Cn%2A%2A1%2A%2A1%5Cn%5Cn6%3A%5Cn%2A%2A-%2A%2A1%22%2C%22defaults%22%3A%7B%22html%22%3Afalse%2C%22xhtmlOut%22%3Afalse%2C%22breaks%22%3Afalse%2C%22langPrefix%22%3A%22language-%22%2C%22linkify%22%3Atrue%2C%22typographer%22%3Atrue%2C%22_highlight%22%3Atrue%2C%22_strict%22%3Afalse%2C%22_view%22%3A%22html%22%7D%7D)
---
示例：V2EX
```
1:
**-**
2:
**1**
3:
**1**-
4:
**-**-
5:
**1**1
6:
**-**1
```
1:
**-**
2:
**1**
3:
**1**-
4:
**-**-
5:
**1**1
6:
**-**1 |
|
