fix(#4236): don't create "<page>/index" directories when post_asset_folder is true

[jiangtj]

What does it do?

fix #4236

How to test

git clone -b fix-post-asset-folder https://github.com/jiangtj/hexo.git
cd hexo
npm install
npm test

Pull request tasks

• Add test cases for the changes.
• Passed the CI test.

[SukkaW]

Why shouldn't page has asset_folder then?

Considering the case:

├─source
│  ├─example-page.md (whose "permalink" is set to "/example-page/")
│  ├─example-page
│  │  ├─some-pic.png

[jiangtj]

In fact, the hexo new command only has these variables and cannot set permalink

hexo/lib/plugins/console/index.js

Lines 49 to 60 in b60f815

	console.register('new', 'Create a new post.', {
	usage: '[layout] <title>',
	arguments: [
	{name: 'layout', desc: 'Post layout. Use post, page, draft or whatever you want.'},
	{name: 'title', desc: 'Post title. Wrap it with quotations to escape.'}
	],
	options: [
	{name: '-r, --replace', desc: 'Replace the current post if existed.'},
	{name: '-s, --slug', desc: 'Post slug. Customize the URL of the post.'},
	{name: '-p, --path', desc: 'Post path. Customize the path of the post.'}
	]
	}, require('./new'));

So when we execute the hexo new page (layout is page), we will get the following result

├─source
│  ├─example-page
│  │  ├─index.md
│  │  ├─index(The current master will create this directory, but for `index.md`, this `example-page` is the resource directory, not `example-page/index`)

I tried using hexo new page example-page -p example-page and got the same path as in your example, I may need to modify the source code to filter out the path suffix /index.md, not all pages

[jiangtj]

I encountered a serious problem, the test case is perfect to run locally, but the error is reported on ci. . .

Forgot to synchronize the upstream/master

[SukkaW]

LGTM