bump version to 1.3.8 in usage; ignore empty docstrings (Dirk bug)

ldoc.lua

@@ -7,7 +7,7 @@
 --
 -- C/C++ support for Lua extensions is provided.
 --
--- Available from LuaRocks as 'ldoc' and as a [Zip file](http://stevedonovan.github.com/files/ldoc-1.3.0.zip)
+-- Available from LuaRocks as 'ldoc' and as a [Zip file](http://stevedonovan.github.com/files/ldoc-1.3.8.zip)
 --
 -- [Github Page](https://github.com/stevedonovan/ldoc)
 --
@@ -35,7 +35,7 @@ app.require_here()
 
 --- @usage
 local usage = [[
-ldoc, a documentation generator for Lua, vs 1.3.1
+ldoc, a documentation generator for Lua, vs 1.3.8
   -d,--dir (default docs) output directory
   -o,--output  (default 'index') output name
   -v,--verbose          verbose

ldoc/parse.lua

@@ -245,7 +245,11 @@ local function parse_file(fname, lang, package, args)
          local item_follows, tags, is_local, case
          if ldoc_comment then
             comment = table.concat(comment)
-
+            if comment:match '^%s*$' then
+               ldoc_comment = nil
+            end
+         end
+         if ldoc_comment then
             if first_comment then
                first_comment = false
             else