global lookup hack for -m was over-hasty

ldoc.lua

@@ -14,7 +14,7 @@ local lapp = require 'pl.lapp'
 app.require_here()
 
 local args = lapp [[
-ldoc, a documentation generator for Lua, vs 0.2 Beta
+ldoc, a documentation generator for Lua, vs 0.3 Beta
   -d,--dir (default docs) output directory
   -o,--output  (default 'index') output name
   -v,--verbose          verbose
@@ -447,7 +447,7 @@ local doc_path = ldoc_dir..'builtin/?.luadoc'
 
 -- ldoc -m is expecting a Lua package; this converts this to a file path
 if args.module then
-   if _G[args.file] then
+   if type(_G[args.file]) ~= 'table' then
       args.file = 'global.'..args.file
    end
    local fullpath,mod = tools.lookup_existing_module_or_function (args.file, doc_path)
@@ -456,6 +456,7 @@ if args.module then
    else
       args.file = fullpath
       args.module = mod
+      print(fullpath,mod)
    end
 end