Rails leaflet map geosearch stopped working after precompiling assets

[Bazley]

I'm using meijer's geosearch in a leaflet map. It was working fine but I've suddenly broken it and I don't know how. The maps still appears, but the search box doen't appear in the map. The code that breaks the app is:

    new L.Control.GeoSearch({
      provider: new L.GeoSearch.Provider.OpenStreetMap(),
      showMarker: false,
      position: 'topright',
      retainZoomLevel: false
    }).addTo(map);

I don't think it can find the geosearch js or css files, even though I've clearly included them in application.html.erb:

    <%= stylesheet_link_tag "leaflet.css" %>
    <%= javascript_include_tag "leaflet.js" %>
    <%= stylesheet_link_tag "l.geosearch.css" %>
    <%= javascript_include_tag "l.control.geosearch.js" %>
    <%= javascript_include_tag "l.geosearch.provider.openstreetmap.js" %>

I think the turning point might have been when I typed `bundle exec rake assets:precompile` at the command line (I also did `RAILS_ENV=production bundle exec rake assets:precompile`). Why would that break geosearch? 

I have deleted my public/assets folder, but that didn't make any difference.

Also, the console doesn't show any complaints about broken geosearch.js files or not finding them. I am, as usual, baffled.