1 Current version is 2.4 (version 2.3 was never publicly released)
3 * Changes since version 2.2
4 + external compiler creates portable binary files that can be loaded faster
5 + interface for debugging and profiling
6 + new "getglobal" fallback
7 + new functions for handling references to Lua objects
8 + new functions in standard lib
9 + only one copy of each string is stored
10 + expanded documentation, with more examples
12 * Changes since version 2.1
13 + functions now may be declared with any "lvalue" as a name
14 + garbage collection of functions
17 * Changes since version 1.1
18 + object-oriented support
20 + simplified syntax for tables
21 + many internal improvements