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(Idle Timers): current-idle-time returns nil if not idle.

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Richard M. Stallman 2007-10-24 08:18:34 +00:00
parent 0ade8edb2d
commit 17bec671b5
1 changed files with 7 additions and 4 deletions
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lispref/os.texi
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@ -1556,10 +1556,10 @@ set up to repeat will subsequently run another time, one by one.
@c Emacs 19 feature
@defun current-idle-time
This function returns the length of time Emacs has been idle, as a
list of three integers: @code{(@var{high} @var{low} @var{microsec})}.
The integers @var{high} and @var{low} combine to give the number of
seconds of idleness, which is
If Emacs is idle, this function returns the length of time Emacs has
been idle, as a list of three integers: @code{(@var{high} @var{low}
@var{microsec})}. The integers @var{high} and @var{low} combine to
give the number of seconds of idleness, which is
@ifnottex
@var{high} * 2**16 + @var{low}.
@end ifnottex
@ -1571,6 +1571,9 @@ The third element, @var{microsec}, gives the microseconds since the
start of the current second (or 0 for systems that return time with
the resolution of only one second).
When Emacs is not idle, @code{current-idle-time} returns @code{nil}.
This is a convenient way to test whether Emacs is idle.
The main use of this function is when an idle timer function wants to
``take a break'' for a while. It can set up another idle timer to
call the same function again, after a few seconds more idleness.