+ # completely ignore lines with no value
+ if ( length( value ) == 0 )
+ next
+
+ fileOption = FILENAME "/" option
+ if ( fileOption in outputByFile ) {
+ warn( "ERROR: " option " already defined in this file at line " outputByFile[ fileOption ] )
+ dieLater( 2 )
+ next
+ } else
+ outputByFile[ fileOption ] = FNR
+