pushState can push same history

[7cc]

In Demo, click the first internal link (1. Introduction) twice, then browser history will be
no hash -> #context -> #context

When location.hash and the clicked a-element's hash are the same, just scroll or replaceState would be good.

[alicelieutier]

You're right, I hadn't thought of that :)

Want to make a pull request?

[7cc]

I will try ...! This will be my first pull request. I'm a bit nervous.

[alicelieutier]

Don't worry :)

You can just:

• update the code on your local repository,
• push it to github,
• and then click "pull-request" here on github.

Also link to this issue in the pull request.