This implements a suggestion made in:
http://lists.gnu.org/archive/html/emacs-devel/2014-10/msg00587.html
Among other things, this means timer.el no longer needs to
autoload the time-date module.
* doc/lispref/os.texi (Time of Day, Time Conversion, Time Parsing)
(Processor Run Time, Time Calculations):
Document the new behavior, plus be clearer about the old behavior.
(Idle Timers): Take advantage of new functionality.
* etc/NEWS: Document the changes.
* lisp/allout-widgets.el (allout-elapsed-time-seconds): Doc fix.
* lisp/arc-mode.el (archive-ar-summarize):
* lisp/calendar/time-date.el (seconds-to-time, days-to-time, time-since):
* lisp/emacs-lisp/timer.el (timer-relative-time, timer-event-handler)
(run-at-time, with-timeout-suspend, with-timeout-unsuspend):
* lisp/net/tramp.el (tramp-time-less-p, tramp-time-subtract):
* lisp/proced.el (proced-time-lessp):
* lisp/timezone.el (timezone-time-from-absolute):
* lisp/type-break.el (type-break-schedule, type-break-time-sum):
Simplify by using new functionality.
* lisp/calendar/cal-dst.el (calendar-next-time-zone-transition):
Do not return time values in obsolete and undocumented (HI . LO)
format; use (HI LO) instead.
* lisp/calendar/time-date.el (with-decoded-time-value):
Treat 'nil' as current time. This is mostly for XEmacs.
(encode-time-value, with-decoded-time-value): Obsolete.
(time-add, time-subtract, time-less-p): Use no-op autoloads, for
XEmacs. Define only if XEmacs, as they're now C builtins in Emacs.
* lisp/ldefs-boot.el: Update to match new time-date.el
* lisp/proced.el: Do not require time-date.
* src/editfns.c (invalid_time): New function.
Use it instead of 'error ("Invalid time specification")'.
(time_add, time_subtract, time_arith, Ftime_add, Ftime_less_p)
(decode_float_time, lisp_to_timespec, lisp_time_struct):
New functions.
(make_time_tail, make_time): Remove. All uses changed to use
new functions or plain list4i.
(disassemble_lisp_time): Return effective length if successful.
Check that LOW is an integer, if it's combined with other components.
(decode_time_components): Decode into struct lisp_time, not
struct timespec, so that we can support a wide set of times
regardless of whether time_t is signed. Decode plain numbers
as seconds since the Epoch, and nil as the current time.
(lisp_time_argument, lisp_seconds_argument, Ffloat_time):
Reimplement in terms of new functions.
(Fencode_time): Just use list2i.
(syms_of_editfns): Add time-add, time-subtract, time-less-p.
* src/keyboard.c (decode_timer): Don't allow the new formats (floating
point or nil) in timers.
* src/systime.h (LO_TIME_BITS): New constant. Use it everywhere in
place of the magic number '16'.
(struct lisp_time): New type.
(decode_time_components): Use it.
(lisp_to_timespec): New decl.
of marking the idle timers directly.
* lisp/emacs-lisp/timer.el (timer--check): New function.
(timer--time, timer-set-function, timer-event-handler): Use it.
(timer-set-idle-time): Simplify.
(timer--activate): CSE.
(timer-event-handler): Give more info in error message.
(internal-timer-start-idle): New function, moved from C.
(jit-lock--debug-fontifying): New var.
(jit-lock--debug-fontify): New function.
* lisp/subr.el (condition-case-unless-debug): Don't prevent catching the
error, just let the debbugger run.
* lisp/emacs-lisp/timer.el (timer-event-handler): Don't prevent debugging
timer code and don't drop errors silently.
src/keyboard.c (timer_check_2): Move calculation of 'timers' and
'idle_timers' from here ...
(timer_check): ... to here. Use Fcopy_sequence to copy the timer
lists, to avoid infloops when the timer does something stupid,
like reinvoke itself with the same or smaller time-out.
lisp/emacs-lisp/timer.el (run-with-idle-timer)
(timer-activate-when-idle): Warn against reinvoking an idle timer
from within its own timer action.
doc/lispref/os.texi (Idle Timers): Warn against reinvoking an idle timer
from within its own timer action.
* etc/NEWS: Document it.
* lisp/emacs-lisp/timer.el (timer): PSECS is now at the end, rather than
being right after USECS, as that better supports old code that
inadvisedly looked directly at the timer vector.
* src/keyboard.c (decode_timer): Get PSECS from the 8th (origin-0)
vector element, not from the 4th, since PSECS is now at the end.
(Fcurrent_idle_time): Doc fix.
Fixes: debbugs:12430
msdos/mainmake.v2 (bootstrap-clean): Do a maintainer-clean in lib, not
bootstrap-clean (which doesn't exist).
msdos/inttypes.h (PRIuMAX) [__DJGPP__ < 2.04]: Define to "llu".
msdos/sedleim.inp (MKDIR_P): Edit to DOS "md" command.
msdos/sed1v2.inp: (LIB_CLOCK_GETTIME): Edit to empty.
Remove lines that invoke PAXCTL.
(clean): Fix recipe not to run Unixy shell commands.
msdos/sed2v2.inp (GETTIMEOFDAY_TIMEZONE): Edit to 'struct timezone'.
(HAVE_STRNCASECMP): Edit to 1.
msdos/sed3v2.inp (LIB_CLOCK_GETTIME): Edit to empty.
(C_SWITCH_SYSTEM): Add "-I../msdos".
msdos/sedlibmk.inp (GNULIB_GETTIMEOFDAY, GNULIB_PSELECT)
(GNULIB_SELECT, HAVE_STRUCT_TIMEVAL, HAVE_SYS_SELECT_H)
(HAVE_SYS_TIME_H, NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H)
(NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H, NEXT_SYS_SELECT_H)
(NEXT_SYS_TIME_H, REPLACE_GETTIMEOFDAY, REPLACE_PSELECT)
(REPLACE_STRUCT_TIMEVAL): Edit to appropriate values.
(BUILT_SOURCES): Edit out sys/select.h and sys/time.h.
(mostlyclean-local, distclean-generic): Fix recipe not to run
Unixy shell commands.
src/sysselect.h [DOS_NT]: Don't include sys/select.h.
src/s/ms-w32.h (select, pselect): Don't define here, they are
defined in sysselect.h
src/sysselect.h (pselect) [!HAVE_PSELECT]: Redirect to sys_select.
src/sysdep.c: Don't include dos.h and dosfns.h.
src/process.c (sys_select):
src/msdos.c (sys_select): Accept one more argument and ignore it.
src/msdos.c (event_timestamp, sys_select): Use gnulib's gettime;
adapt data types and code to that.
src/dosfns.c:
src/msdos.c (gettime, settime): Define away the prototypes in dos.h,
which clashes with the gnulib function of the same name.
lisp/emacs-lisp/timer.el (timer-until): Subtract results of
float-time, instead of taking float-time of the result of
time-subtract, since float-time signals an error for negative time
arguments.
* lisp/emacs-lisp/timer.el, lisp/emacs-lisp/syntax.el, lisp/emacs-lisp/smie.el:
* lisp/emacs-lisp/ewoc.el, lisp/emacs-lisp/cconv.el,lisp/emacs-lisp/derived.el:
* lisp/emacs-lisp/byte-opt.el, lisp/emacs-lisp/autoload.el: Convert to cl-lib.
* lisp/emacs-lisp/easymenu.el, lisp/emacs-lisp/easy-mmode.el:
* lisp/emacs-lisp/bytecomp.el: Use pcase instead of `cl'.
* lisp/emacs-lisp/cl-lib.el: Get rid of special cl-macs auto load.
code clearer. Rewrite all `aset' and `aref' using the defined accessors.
(timer--time): New pseudo-field.
(timer-set-time, timer-set-idle-time, timer-inc-time)
(timer-set-time-with-usecs, with-timeout-suspend): Use it.
(timer--time-less-p): New function.
(timer--activate): New function, extracted from timer-activate.
(timer-activate-when-idle, timer-activate): Use it.
(cancel-function-timers): Use dolist.
