Thanks to BrowserUK I got on the right track looking at the B modules. I decided to narrow the problem down to finding lexical variables in modules, since almost all my variables are of this sort. I didn't see how to handle lexical variables using the techniques in B::Lint, but I ran across B::LexInfo. This just about gets me what I want, although it hasn't been tested thoroughly: 
use B::LexInfo;
use strict;

# The name of the module to test goes in
# the next two lines.
my $module_name= "Data::Table";
use Data::Table;

my $lexi = B::LexInfo->new;
my $info = $lexi->stash_cvlexinfo($module_name);

foreach my $pad (@{$info})
{
  foreach my $sub (keys %{$pad})
  {
    my %lexhash;
    foreach my $next (keys %{$pad->{$sub}})
    {
      if ($next =~ /(\$)(.*)/ or 
          $next =~ /(@)(.*)/ or 
          $next =~ /(%)(.*)/)
      {
        my ($op, $varname)= ($1,$2);
        if (exists $lexhash{$varname})
        {
          print "$sub has lexicals $op$varname".
                " and $lexhash{$varname}$varname\n";
        }
        else
        {
          $lexhash{$varname}= $op;
        }
      }
    }
  }
}

[download]
I could make this a module and add a little more B code to it, so that it would check a whole program and all the loaded modules. I could use it with something like: 
use VerifyLexicalsWontConfuseTomA;

[download]
It should work perfectly the first time! - toma

In reply to Re: Confusing variable names by toma
in thread Confusing variable names by toma

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