Added filtering in sidebar for ignoreSubHeading

[alexcambose]

Add support for ignoreSubHeading when loadSidebar is false.

The issue

When {docsify-ignore} is applied on a heading, the generated sidebar still contains the header and its subheaders. When loadSidebar is false only the sidebar() method is called so the filtering needs to be inserted there.

docsify/src/core/render/index.js

Lines 93 to 107 in 8cd786c

	proto._renderSidebar = function (text) {
	const {maxLevel, subMaxLevel, loadSidebar} = this.config
	this._renderTo('.sidebar-nav', this.compiler.sidebar(text, maxLevel))
	const activeEl = getAndActive(this.router, '.sidebar-nav', true, true)
	if (loadSidebar && activeEl) {
	activeEl.parentNode.innerHTML +=
	this.compiler.subSidebar(subMaxLevel) || ''
	} else {
	// Reset toc
	this.compiler.subSidebar()
	}
	// Bind event
	this._bindEventOnRendered(activeEl)
	}

I used classic splice() method and for loops to remove the header and all it's subheaders because I saw this method being used subSidebar(). I was probably better to just use the [].filter() way but it works anyways.

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[timaschew]

Hey Alexandru, thanks for your contribution!
Can you please provide some unit tests?

[alexcambose]

I would like to but i can't figure out how to get the rendered html of the sidebar in the tests file.

[timaschew]

You can rebase on my branch: improve-test-setup I've added some tests cases which should be helpful for you.

[timaschew]

Please run these commands to trigger netlify deployment for this Pull Request:

git commit --amend --no-edit
git push --force