Hexo will add extra space of continous lines with CJK characters.

.....中文结尾
中文顶格...

will result in

.....中文结尾 中文顶格...
             `- note the space here

This plugin will fix that.

Usage

$ npm install hexo-filter-fix-cjk-spacing --save

If you want to disable this plugin, add the following line in your _config.yml:

fix_cjk_spacing: false

Note that Hexo' marked.js uses GitHub flavored markdown which will parse every line break in markdown into <br>. Use the following to disabled it:

marked:
  breaks: false

The problem

In markdown, if we write several lines continuously, it will be parsed as a whole block:

line 1
line 2
line 3

// will be parsed as

<p>line 1
line 2
line 3</p>

That means line breaks are kept and all the three lines are treated as a whole paragraph.

However, the browser will convert the line break in a <p> into a single space, so when we see the previous content in a browser, it will look like:

line 1 line 2 line 3

That is OK except when we use Chinese. There is no concept of space in Chinese, so when we write:

中文第一行
中文接上行

// will show as

中文第一行 中文接上行
//        `- not the space here

It is really frustrating! So there are two major solutions:

1. Fixing the markdown parsing code to treat it correctly.
2. Write the whole paragraph in a long line.

The first option is actually not so pratical. This 'bug' exist for so long and still not fixed. The second will be so boring and un-friendly.

So here comes our solution with hexo: Write a filter to merge chinese lines automatically before parsing!

The use case

Only the following situation are dealt with:

...<chinese character>[should contains no spaces]
[zero or more spaces|tab]<chinese character>

.....中文结尾
中文顶格...

// are modified to
.....中文结尾中文顶格...
//           `- note no space here

Note that the content in fenced code block will not be changed. But indented code blocks will be changed