Revert "Apply the pattern.filter to every alias (including those without an extension"

This reverts commit daeb6c6bee3d857d6d26c5eac77a7f52e5616139.
Create test proving the filter does not apply to aliases without extensions
Apply the pattern.filter to every alias (including those without an extension
Create test proving the filter does not apply to aliases without extensions
Apply the pattern.filter to every alias (including those without an extension
Merge branch 'filter-fix'