It's line 2454 in CGI.pm (v3.39): 

    } elsif ($default) {

[download]

which makes $default values of zero (=false) be ignored. ($default is where your $CONFIG{convert_links_to_friendly} value ends up in.)

The fix would apparently be 

    } elsif (defined $default) {

[download]

but I can't tell for sure whether that would maybe break something else (don't think so), or what the motivation for not using defined might have been...

In reply to Re: Problems with recent CGI.pm by almut
in thread Problems with recent CGI.pm by starbizcon

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