Fix bugs in Lua scripts surfaced by Luacheck

Author: alerque

tools/moduledeps.lua

@@ -14,12 +14,12 @@ end
 
 if not (mode == "tree" or mode == "transitive") then
   io.write("Usage: lua moduledeps (tree|transitive) modulename\n")
-  io.exit(1)
+  os.exit(1)
 end
 
 if #roots == 0 then
   io.write("Usage: lua moduledeps modulename+\n")
-  io.exit(1)
+  os.exit(1)
 end
 
 for line in lines do

tools/update-lua-module-docs.lua

@@ -198,10 +198,10 @@ local function render_type (name, level, modulename)
   local methods = Blocks{}
   if next(metatable.methods) then
     local attr = {'type-' .. id .. '-methods'}
-    methods:insert(Header(level + 1, "Methods", mattr))
-    for name, method in sorted(metatable.methods) do
-      -- attr = {'type-' .. modulename .. '.' .. name .. '.' .. name}
-      -- methods:insert(Header(level + 2, name, attr))
+    methods:insert(Header(level + 1, "Methods", attr))
+    for propname, method in sorted(metatable.methods) do
+      -- attr = {'type-' .. modulename .. '.' .. name .. '.' .. propname}
+      -- methods:insert(Header(level + 2, propname, attr))
       methods:extend(render_function(documentation(method), level+2, id))
     end
   end