ignore directory

How can you **ignore** a subdirectory from minifying ? I have a ./static/libs directory that I wold like html-minifier to ignore when it processes the --input-dir

`` html-minifier --file-ext html --input-dir ./static --output-dir ./static --collapse-whitespace --remove-comments --remove-redundant-attributes --remove-script-type-attributes --remove-tag-whitespace --minify-css true --minify-js true``

Start by reproducing the supplied html-minifier command with ./static as --input-dir and ./static/libs as the directory to exclude. Trace how --input-dir processes subdirectories, then confirm that files under the excluded directory remain unchanged while other HTML files are minified.

Written by the indexing model from the issue text.