Tab path completion doesn't work when I use glow to open a file in another directory

[JaoCN]

Describe the bug
A clear and concise description of what the bug is.

Setup
Please complete the following information along with version numbers, if applicable.

• OS [Ubuntu16.04]
• Shell [bash]
• Locale [e.g. en_US.UTF-8,]

To Reproduce
Steps to reproduce the behavior:

now I'm in the /path1 directory and I want to open the /path1/path2/README.md file, when I type glow path2 and press TAB to complete the path, the TAB command doesn't work!

Source Code
Please include source code if needed to reproduce the behavior.

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
Add screenshots to help explain your problem.

Additional context
Add any other context about the problem here.

[JaoCN]

but when I type glow stash path2 and press TAB, it works.

[nightshade427]

same here