or download this
qwurx [shmem] ~/some_repo > mdkdir INC
qwurx [shmem] ~/some_repo > cd INC
qwurx [shmem] ~/some_repo/INC > perl -E 'for (@INC) { ($n=$_)=~s{/}{·}
+g; symlink $_, $n}'
qwurx [shmem] ~/some_repo/INC > cd ..
qwurx [shmem] ~/some_repo > ctags -R