Survex files subdirectories displayed differently

urls.py

@@ -7,7 +7,7 @@ from django.contrib import admin
 from django.urls import reverse, resolve
 
 from troggle.core import views_other, views_caves, views_logbooks, views_statistics, views_survex, view_surveys
-#from troggle.core.views_other import logbook_entry_suggestions
+from troggle.core.views_other import troggle404
 from troggle.core.views_caves import ent, prospecting_image
 from troggle.core.views_statistics import pathsreport, stats
 from flatpages import views as flatviews
@@ -25,6 +25,7 @@ which is vital to writing code for the webapp. So the URL dispatch is declarativ
 The API urls return TSV or JSON and are new in July 2020.
 """
 
+#handler404 = 'troggle.core.views_other.troggle404' # can't get this to work. but 404.html is default anyway
 
 # Many of these patterns do not work because troggle spent many years broken and we have
 # not yet restored all the functions. Some may have never been fully implemented in
@@ -102,7 +103,7 @@ actualurlpatterns = [
     url(r'^survexfile/(?P<survex_file>.*?)\.log$', views_survex.svxraw),
     url(r'^survexfile/(?P<survex_file>.*?)\.err$', views_survex.err),
 
-    url(r'^survexfile/caves',                         views_survex.survexcaveslist,  name="survexcaveslist"),
+    url(r'^survexfile/caves/$',                        views_survex.survexcaveslist,  name="survexcaveslist"),
     url(r'^survexfile/(?P<survex_cave>.*)$',          views_survex.survexcavesingle, name="survexcavessingle"),
     url(r'^survexfileraw/(?P<survex_file>.*?)\.svx$', views_survex.svxraw,           name="svxraw"),
 
@@ -146,6 +147,7 @@ actualurlpatterns = [
 urlpatterns = [
     url('^%s' % settings.DIR_ROOT, include(actualurlpatterns))
 ]
+
 # When apache is running these prempt Django so Django never sees them.
 
 # NEW apache configurations suggested as of 20 March 2021: