phoney error message when bad ref is in module summary sorted; no-doc-comment error now has line number

html/ldoc_ltp.lua

@@ -88,6 +88,7 @@ return [==[
 # if ldoc.body then -- verbatim HTML as contents; 'non-code' entries
     $(ldoc.body)
 # elseif module then -- module documentation
+#   ldoc.item = module  -- context for M()
 <p>$(M(module.summary))</p>
 <p>$(M(module.description))</p>
 

ldoc/doc.lua

@@ -307,6 +307,8 @@ function Item:error(msg)
    os.exit(1)
 end
 
+Module.warning, Module.error = Item.warning, Item.error
+
 function Module:hunt_for_reference (packmod, modules)
    local mod_ref
    local package = self.package or ''
@@ -380,7 +382,6 @@ end
 -- and try to to resolve this.
 function Module:resolve_references(modules)
    local found = List()
-
    for item in self.items:iter() do
       local see = item.tags.see
       if see then -- this guy has @see references

ldoc/parse.lua

@@ -88,9 +88,10 @@ local function parse_file(fname,lang, package)
 
    function filename () return fname end
 
-   function F:warning (msg,kind)
+   function F:warning (msg,kind,line)
       kind = kind or 'warning'
-      io.stderr:write(kind..' '..fname..':'..lineno()..': '..msg,'\n')
+      line = line or lineno()
+      io.stderr:write(kind..' '..fname..':'..line..': '..msg,'\n')
    end
 
    function F:error (msg)
@@ -183,7 +184,7 @@ local function parse_file(fname,lang, package)
             add_module(tags,module_found,old_style)
             tags = nil
             if not t then
-               io.stderr:write('warning: ',fname,' contains no items\n')
+               F:warning(fname,' contains no items\n','warning',1)
                break;
             end -- run out of file!
             -- if we did bump into a doc comment, then we can continue parsing it