list-directory replaces [ characters in filenames with \\[, resulting in an extra slash...

[stacksmith]

Observed on a Xubuntu 14.04 with SBCL.

To verify the issue, please

1. Create a file called "[test.txt"
2. (cl-fad:list-directory "your path")
3. Observe that the file shows as #P"your path/\[test.txt"

The resultant path cannot be opened...

[stassats]

[ is special in SBCL and escaped \\[ works fine.

[stacksmith]

That is what I thought, but I wound up with a file I cannot open: it looks like "[hello]"... With a single backslash. The original file is "[hello]".
github seems to be removing slashes in comments as well, adding to the confusion.