Spaces and backslashes are over-escaped in tab completion when there is a wildcard present.

This is probably two related bugs.

The first is that expansion::words::unescape doesn't support spaces in filenames, and the second is that wildcards get escaped when they're not the only character in the expanding word.

To reproduce both issues at once:

mkdir example
touch example/file\ A
touch example/file\ B
file  example/f*<Tab><Tab><Tab>

Observe that one backslash is added each time you press Tab. If you move the cursor to earlier in the line before pressing Tab it gets even worse...

file example/file\ *<TAB>

Observe that the space gets double escaped.

Expected behavior:

Accidentally pressing Tab after the * shouldn't double escape anything, and it shouldn't escape the *.