You don't need to install a mod for that. You just need to change two things in Links.
1. %db_def in category.def:
Change:
Quote:
Name => [1, 'alpha', 40, 75, 1, '', '^[\w\d/_-]+$'],
to read:
Quote:
Name => [1, 'alpha', 40, 75, 1, '', '^[\w\d,/_-]+$'],
2. sub build_check_dir in nph-build.cgi:
Change:
Quote:
my $chrs = quotemeta ("/_-");
to read:
Quote:
my $chrs = quotemeta (",/_-");
I hope this helps.