Help! Need to display shorter paths in emacs using gtags-mode...

My source code tree happens to be positioned far down
in the directory structure. So when I use M-x gtags-find-with-grep
is difficult to use because all lines begin with the same long path
I have to manually scroll right with emacs to see the end.

I have tried to use symbolic links to access the code tree, but
emacs/gtags is too clever, it finds out the true path anyway.

The emacs display looks like this:
semicolo