Here are the changes:

Changed: For Windows Vista and later, hotkeys that include the Windows key
(e.g. #a) will wait for LWin and RWin to be released before sending any text
containing an "L" keystroke. This prevents such a hotkey from locking the
PC. This behavior applies to all sending modes except SendPlay (which
doesn't need it) and blind mode.

Fixed A_LoopFileExt to be blank for any filename having no extension but a
period in its pathname. [thanks Yek-Toho-Tua].

Fixed the assignment of integers that are 19 or 20 characters long to work
as they did prior to v1.0.48. [thanks Laszlo & Lexikos]

Fixed function definitions to work properly inside a block. [thanks rmarko]

Improved performance of A_Index in expressions by treating it as an integer
rather than a string.

Improved performance of "if var [not] in/contains". [developed by Lexikos]

Improved ListLines with an option to turn line-logging Off or On. [thanks
kenomby & ruespe]


Download it at http://www.autohotkey.com/download/