discourse/app/views/common/_discourse_publish_stylesheet.html.erb

<%= discourse_stylesheet_link_tag 'publish', theme_id: nil %>

<%- Discourse.find_plugin_css_assets(include_official: allow_plugins?, include_unofficial: allow_third_party_plugins?, mobile_view: mobile_view?, desktop_view: !mobile_view?, request: request, rtl: rtl?).each do |file| %>
  <%= discourse_stylesheet_link_tag(file) %>
<%- end %>

<%- if theme_id.present? %>
  <%= discourse_stylesheet_link_tag(:common_theme, supports_rtl: true) %>
  <%= discourse_stylesheet_link_tag(mobile_view? ? :mobile_theme : :desktop_theme) %>
<%- end %>