* Exclude SSI comments
Exclude Nginx & Apache Server Side Include (SSI) comments from being stripped via minification, the same way IE directives are not stripped.
Both Nginx & Apache SSI directives begin with:
<!—#
So we can just look for the # and don’t strip the comment in that case.
Nginx SSI: http://nginx.org/en/docs/http/ngx_http_ssi_module.html
Apache SSI: https://httpd.apache.org/docs/2.4/howto/ssi.html
* Add tests for Nginx/Apache SSI directives
Co-authored-by: Andrew Welch <andrew@keluli.local>