Do not replace the leading digit of the anchor link

[bgpat]

Bug Report

Steps to reproduce

Create link.md, and start the dev srerver.

link.md

# 1. one

111

# 2. two

222

# 3. three

333

What is current behaviour

Docsify adds _ into between # and the leading digit.

What is the expected behaviour

I expect that it doesn't add like GitHub's parser.

---

GitHub's markdown parser:

Other relevant information

• Bug does still occur when all/other plugins are disabled?

• Your OS: macOS

• Node.js version: v11.12.0

• npm/yarn version: 6.9.0

• Browser version: Firefox 67.0.4

• Docsify version: develop branch (1d3246a)

• Docsify plugins: nothing

[anikethsaha]

Are you facing any issue having _ in front?

If yes, then we can consider it as a bug after reviewing.
Else I don't think it is causing if works fine and it's just a different approach to solving a problem.

[bgpat]

Are you facing any issue having _ in front?

The fragment link which starts of _ and works on GitHub's Markdown parser doesn't work through Docsify. I faced this problem in creating the TOC to numbered heading block, e.g., ## 1. foo or ## 2. bar.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.