Also need something to prevent recursion (file1 includes file2 includes file1), for example:
package Include;

...

my $sanity_count = 0;

sub import 
{
    my (undef, @files) = @_;
    
    @files = find_files(@files);    # cdarke added
        
    $sanity_count?croak ("Possible recursion!: @files"):$sanity_count+
++;

    ...

[download]
This also protects against use Include $0;

In reply to Re: Solved: splitting source file by cdarke
in thread Solved: splitting source file by AriSoft

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