Support higher-resolution time stamps.

Fixes: debbugs:9000

2 files changed, 12 insertions, 0 deletions

diff --git a/etc/ChangeLog b/etc/ChangeLog
index 3fd2d6bd92a..6901077fbe0 100644
--- a/etc/ChangeLog
+++ b/etc/ChangeLog
@@ -1,3 +1,8 @@
+2012-06-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Support higher-resolution time stamps (Bug#9000).
+        * NEWS: Mention addition of picoseconds to time stamp format.
+
 2012-06-13  Deniz Dogan  <deniz@dogan.se>
 
         * tutorials/TUTORIAL.sv: Fix grammar and a couple of typos.
diff --git a/etc/NEWS b/etc/NEWS
index 82c2660a3c7..054700352af 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -64,6 +64,13 @@ been adding them there, put them somewhere else, eg site-lisp.
 
 * Changes in Emacs 24.2
 
+** The function `current-time' now returns extended-format time stamps
+(HIGH LOW USEC PSEC) that use picosecond resolution; the PSEC
+component is new.  PSEC is typically a multiple of 1000 on current
+machines.  Other functions that use this format, such as
+file-attributes and format-time-string, have been changed accordingly.
+Old-format time stamps are still accepted.
+
 ** New functions `system-users', `system-groups' return lists of the user
 name, group names known to the system (where possible).