Enables or disables line logging or displays the script lines most recently executed.
Type: Integer or String (empty)
If blank or omitted, the history of lines most recently executed is shown. The first parameter affects only the behavior of the current thread as follows:
True: Includes subsequently-executed lines in the history. This is the starting default for all scripts.
False: Omits subsequently-executed lines from the history.
ListLines (with no parameter) is equivalent to selecting the "View->Lines most recently executed" menu item in the main window. It can help debug a script.
ListLines Mode can be used to selectively omit some lines from the history, which can help prevent the history from filling up too quickly (such as in a loop with many fast iterations). The line which called ListLines is also removed from the line history, to prevent clutter. Additionally, performance may be reduced by a few percent while line logging is enabled.
Every newly launched thread (such as a hotkey, custom menu item, or timed subroutine) starts off fresh with the default setting for this function. That default may be changed by using this function during script startup.
The built-in variable A_ListLines contains 1 if ListLines is enabled and 0 otherwise.
On a related note, the built-in variables A_LineNumber and A_LineFile contain the currently executing line number and the file name to which it belongs.
KeyHistory, ListHotkeys, ListVars
x := "This line is logged" ListLines False x := "This line is not logged" ListLines True ListLines MsgBox