Perl: foreach (@list) { code } is better

 # Build all known libraries, engines, programs and scripts.

 # Everything else will be handled as a consequence.

 dolib($_)     foreach @{$unified_info{libraries}};

 doengine($_)  foreach @{$unified_info{engines}};

 dobin($_)     foreach @{$unified_info{programs}};

 doscript($_)  foreach @{$unified_info{scripts}};

 foreach (@{$unified_info{libraries}}) { dolib($_);    }

 foreach (@{$unified_info{engines}})   { doengine($_); }

 foreach (@{$unified_info{programs}})  { dobin($_);    }

 foreach (@{$unified_info{scripts}})   { doscript($_); }

 # Finally, should there be any applicable BEGINRAW/ENDRAW sections,

 # they are added here.