[Bug]: This plug-in cannot be used in an unordered list

[Xuyaoyan]

Describe the bug

When "-" is on the same line as the symbol I want tabout, the plugin cannot be used

https://user-images.githubusercontent.com/78849174/158837591-0adcd1b0-c27c-40a4-913a-ef8866a479c4.mp4

Relevant errors (if available)

No response

Steps to reproduce

1. Create a rule in plugin like "`"
2. Start another line in any article
3. Type "- ``"
4. Move the cursor between two `
5. Press the tab key

Expected Behavior

When I use tabout on the line with "-" at the beginning for the symbol set in the plug-in, it can jump out normally

Addition context

No response

Operating system

Windows

[Lyqed]

Second this.