Handle special characters in path when globbing

[lorenyu]

Resolves #1574

Changes

This change fixes the bug reported in #1574

Testing

I created a minimal reproduction of the error in this repository: https://github.com/navapbc/ruby-steep-bug-repro

Before any changes were made, running bundle exec steep check within the folder \{\{foo\}\} could not find the type error, even though running the same command in the identical folder foo could find it.

After editing steep locally with the changes, running bundle exec steep check within the \{\{foo\}\} folder now properly detects the type error:

[lorenyu]

@soutaro hi can you take a look at this? This is currently a blocking issue preventing me from being able to adopt rbs on my project.

[lorenyu]

@tk0miya sorry to bother you but I saw you are active on other issues so I wonder if maybe you might have some time to review? My project is blocked on this issue and I already spent the time to produce a fix so I would appreciate it if one of the repository maintainers can review and merge the fix.

[tk0miya]

Looks good with nits.

Note: I'm not a maintainer. So the only thing I can do is review. Please ask soutaro about merging.

[lorenyu]

@soutaro it looks like @tk0miya did a review and I've made the suggested nit changes from that review. I was wondering if you could take a look and merge this change. As I mentioned previously, my project would like to use rbs but is currently blocked on being able to use it due to this issue, and I can't figure out a reasonable workaround. It's a bit of a long story why we have special characters in our path but it's not something we can easily change.