Bash tab completion adds extra space after the first completion which stops further completion if the compeletion target is a file in multi-level folders.
For example, I have a file in the path ~/Documents/foo/bar.txt, and I want to list it. I face the following problem, when input
a@b:~$ls Docu <TAB>
I get
a@b:~$ls Documents |(<-this is the cursor, so there is an extra space afer Documents)
So I cannot further tab complete. I have to backspace to delete the extra space.
Normally I want to get:
a@b:~$ls Docu <TAB>
a@b:~$ls Documents/ <TAB>
a@b:~$ls Documents/foo/ <TAB>
a@b:~$ls Documents/foo/bar.txt