string.find issue

[Shmuel Zeigerman <shmuz@...>]

Isn't it strange what string.find returns when the initial search 
position is beyond the subject end:
  print(string.find("a", ".*", 10)) --> 2  1

BTW, when trying to write string.gmatch in pure Lua, using string.find, 
one should take this issue into consideration (and do an additional check).

So I propose that string.find return nil in this case.
--
Shmuel