#134 Extending NaturalDocs with custom Perl modules does not work

[Van de Bugger]

Languages.txt has a comment:

# Perl Package: [perl package]
#    Specifies the Perl package used to fine-tune the language behavior in ways
#    too complex to do in this file.

I have added following lines to my Languages.txt:

Language: SomeLang

   Extension: sl
   Perl Package: SomeLang

But NaturalDocs issues an error:

NaturalDocs:.../Languages.txt:132: could not create NaturalDocs::Languages::Test object
Natural Docs encountered the following error and was stopped:
   There is an error in .../Languages.txt

Investigation shows that problem is in Languages.pm:

478             elsif ($keyword eq 'perl package')
479                 {
480                 eval
481                     {
482                     $language = $value->New($languageName);
483                     };
484                 if ($::EVAL_ERROR)
485                     {
486                     NaturalDocs::ConfigFile->AddError('Could not create ' . $value . ' object.', $lineNumber);
487                     return;
488                     };
489                 };
490             };

All the modules shipped with NaturalDocs are "use"d at the top of the file, so $value->New($languageName) works ok. But custom module is not loaded. NaturalDocs should load a module before calling its New method:

478             elsif ($keyword eq 'perl package')
479                 {
+++                 eval "require $value;" and  # NOTE THIS LINE
480                 eval
481                     {
482                     $language = $value->New($languageName);
483                     };
484                 if ($::EVAL_ERROR)
485                     {
486                     NaturalDocs::ConfigFile->AddError('Could not create ' . $value . ' object.', $lineNumber);
487                     return;
488                     };
489                 };
490             };

The patch is attached.