Greetings, I thought I'd take a look at CPAN-Forum. I downloaded the module/package, inspected, then installed the dependencies, and finally built, tested, and installed it. Everything went as expected. However, I seem to be having troubles with hosting it in a sub-directory within the web site's document root "/". While it does attempt to set the (it's) DOCROOT (ROOT) when it initializes, it doesn't appear to stick. Anyway, The following error might have something to do with it: 
Use of uninitialized value $ENV{"PATH_INFO"} in pattern match (m//) at
+ Forum.pm line 674

[download]
The line in question (with fuller context): 
  if (not $rm or $rm eq "home") {
        if ($ENV{PATH_INFO} =~m{^/   # Line 674
            ([^/]+)        # first word till after the first /
            (?:/(.*))?     # the rest, after the (optional) second /
             }x) {
         my $newrm = $1;
         my $params = $2 || "";
         if (grep {$newrm eq $_} @urls) {
         my @params = split /\//, $params;
            $self->param(path_parameters => @params ? \@params : []);
            $rm = $newrm;
            $self->prerun_mode($rm);
            } elsif ($ENV{PATH_INFO} eq "/cgi/index.pl") {
            # TODO this is temporary to avoid unnecessary warnings
            } else {
              warn "Invalid PATH_INFO: $ENV{PATH_INFO}";
              # shall I make more noise ? 
            }
       }

  }

[download]
While I could imagine picking an unlikely to be used name, and declare/assign it to ($ENV{PATH_INFO}...) It seems that that environment variable should already exist -- I haven't had trouble(s) in the past with it.

Any helpful suggestions, greatly appreciated.

Thank you for all your time, and consideration.

--chris 

#!/usr/bin/perl -Tw
use perl::always;
my $perl_version = "5.12.5";
print $perl_version;

In reply to CPAN-Forum -- problem with "Use of uninitialized value" by taint

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