Plugin don't work if full filename contains open "[" _and_ close "]" square brackets

[Jurik-Phys]

Describe the bug
If path of main.cpp file contains open "[" and close "]" square brackets tags file don't generate.

Gutentags trace

"~/working/digial-[s]ignals/main.cpp" 12L, 178B
gutentags: Scanning buffer '/home/<username>/working/digial-[s]ignals/main.cpp' for gutentags setup...
gutentags: No gutentags support for this buffer.

Steps to reproduce

1. write to ~/.vimrc let g:gutentags_trace = 1 to get trace info
2. Open *.cpp file with "[" and "]" in pathname
3. ctag files don't generate;
4. gutentags: No gutentags support for this buffer
5. If you remove "[" "]" from pathname
6. ctag files will be complete generate