do not use placeholder description text from api

docgen/doc.lua

@@ -116,7 +116,7 @@ end
 
 M.brief_str_get = function(eos, obj, obj2)
     if not obj and not obj2 then
-        return "No description supplied."
+        return nil
     end
     if not obj then
         obj = obj2
@@ -211,9 +211,7 @@ M.impl_description_get = function(eos, impl, cl)
     else
         bdoc = M.brief_str_get(eos, docf)
     end
-    if bdoc ~= "No description supplied." then
-        return bdoc
-    end
+    return bdoc
 end
 
 local nspaces_group = function(ns)

gendoc.lua

@@ -48,7 +48,7 @@ local build_reftable = function(f, title, t)
                 eoutils.obj_nspaces_get(v, true),
                 v:name_get()
             ):finish(),
-            docm.brief_str_get(eos, v:documentation_get())
+            docm.brief_str_get(eos, v:documentation_get()) or "No description supplied."
         }
     end
     table.sort(nt, function(v1, v2) return v1[1] < v2[1] end)
@@ -352,7 +352,7 @@ local write_evtable = function(f, tcl, tbl)
  
         -- description
         local bdoc = docm.brief_str_get(eos, ev:documentation_get())
-        if bdoc ~= "No description supplied." then
+        if bdoc then
             f:write_br(true)
             f:write_raw("> ")
             f:write_raw(bdoc)
@@ -403,7 +403,7 @@ local write_inherit_evtable = function(f, tcl, tbl)
 
         f:write_raw(" | ")
         local bdoc = docm.brief_str_get(eos, ev:documentation_get())
-        if bdoc ~= "No description supplied." then
+        if bdoc then
             f:write_raw(bdoc)
         end
 

templates/include/reftable.txt

@@ -7,6 +7,7 @@
                 "[[" .. doc.link_target_get(eoutils.obj_nspaces_get(v))
                     .. "|" .. v:name_get() .. "]]",
                 doc.brief_str_get(eos, v:documentation_get())
+                    or "No description supplied."
             }
         end
         return cnt