Snippet file "not found" error if the path has a space in it

[nie7321]

• I confirm that this is an issue rather than a question.

Bug report

Including a snippet fails if there is a space anywhere in the path name. This snippet:

<<< @/docs/dev/tools/Test File.js

Results in an error showing the cut-off filename:

Not found: /Users/myuser/dev/my-cool-website/docs/dev/tools/Test

This happens if the space is in the @ alias (for cwd) -- I can rename the files under docs/, but when this builds in my CI env, there's a space that is outside of my control, which is really unfortunate!

Version

I am using 0.14.10.

Looking at the snippet code in the 1.x branch, I believe 1.x would be affected as well.

Steps to reproduce

1. Create a page & include the snippet Test Doc.js
2. Create a Test Doc.js file
3. View the page & see the error.

What is expected?

The snippet should be included in the page.

What is actually happening?

The snippet is not being included in the page.

Other relevant information

• Your OS: OS X 10.13.6
• Node.js version: v11.12.0
• Browser version: n/a
• Is this a global or local install? Local
• Which package manager did you use for the install? Yarn
• Does this issue occur when all plugins are disabled? Yes

[nie7321]

Is there a reason this needs to split on space in addition to the opening curly brace for highlights?

https://github.com/vuejs/vuepress/blob/0.x/lib/markdown/snippet.js#L27

I don't see anything in the docs that says spaces are meaningful to the snippet syntax, but I am not an expert :-)

I can submit a PR w/ https://github.com/nie7321/vuepress/commits/snippets-split-on-space if you'd like!