new file mode 100644
--- /dev/null
+++ b/src/time.c
@@ -0,0 +1,1041 @@
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * VIM - Vi IMproved	by Bram Moolenaar
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+/*
+ * time.c: functions related to time and timers
+ */
+
+#include "vim.h"
+
+/*
+ * Cache of the current timezone name as retrieved from TZ, or an empty string
+ * where unset, up to 64 octets long including trailing null byte.
+ */
+#if defined(HAVE_LOCALTIME_R) && defined(HAVE_TZSET)
+static char	tz_cache[64];
+#endif
+
+/*
+ * Call either localtime(3) or localtime_r(3) from POSIX libc time.h, with the
+ * latter version preferred for reentrancy.
+ *
+ * If we use localtime_r(3) and we have tzset(3) available, check to see if the
+ * environment variable TZ has changed since the last run, and call tzset(3) to
+ * update the global timezone variables if it has.  This is because the POSIX
+ * standard doesn't require localtime_r(3) implementations to do that as it
+ * does with localtime(3), and we don't want to call tzset(3) every time.
+ */
+    static struct tm *
+vim_localtime(
+    const time_t	*timep,		// timestamp for local representation
+    struct tm		*result UNUSED)	// pointer to caller return buffer
+{
+#ifdef HAVE_LOCALTIME_R
+# ifdef HAVE_TZSET
+    char		*tz;		// pointer for TZ environment var
+
+    tz = (char *)mch_getenv((char_u *)"TZ");
+    if (tz == NULL)
+	tz = "";
+    if (STRNCMP(tz_cache, tz, sizeof(tz_cache) - 1) != 0)
+    {
+	tzset();
+	vim_strncpy((char_u *)tz_cache, (char_u *)tz, sizeof(tz_cache) - 1);
+    }
+# endif	// HAVE_TZSET
+    return localtime_r(timep, result);
+#else
+    return localtime(timep);
+#endif	// HAVE_LOCALTIME_R
+}
+
+/*
+ * Return the current time in seconds.  Calls time(), unless test_settime()
+ * was used.
+ */
+    time_T
+vim_time(void)
+{
+# ifdef FEAT_EVAL
+    return time_for_testing == 0 ? time(NULL) : time_for_testing;
+# else
+    return time(NULL);
+# endif
+}
+
+/*
+ * Replacement for ctime(), which is not safe to use.
+ * Requires strftime(), otherwise returns "(unknown)".
+ * If "thetime" is invalid returns "(invalid)".  Never returns NULL.
+ * When "add_newline" is TRUE add a newline like ctime() does.
+ * Uses a static buffer.
+ */
+    char *
+get_ctime(time_t thetime, int add_newline)
+{
+    static char buf[50];
+#ifdef HAVE_STRFTIME
+    struct tm	tmval;
+    struct tm	*curtime;
+
+    curtime = vim_localtime(&thetime, &tmval);
+    // MSVC returns NULL for an invalid value of seconds.
+    if (curtime == NULL)
+	vim_strncpy((char_u *)buf, (char_u *)_("(Invalid)"), sizeof(buf) - 1);
+    else
+    {
+	(void)strftime(buf, sizeof(buf) - 1, _("%a %b %d %H:%M:%S %Y"),
+								    curtime);
+# ifdef MSWIN
+	if (enc_codepage >= 0 && (int)GetACP() != enc_codepage)
+	{
+	    char_u	*to_free = NULL;
+	    int		len;
+
+	    acp_to_enc((char_u *)buf, (int)strlen(buf), &to_free, &len);
+	    if (to_free != NULL)
+	    {
+		STRCPY(buf, to_free);
+		vim_free(to_free);
+	    }
+	}
+# endif
+    }
+#else
+    STRCPY(buf, "(unknown)");
+#endif
+    if (add_newline)
+	STRCAT(buf, "\n");
+    return buf;
+}
+
+#if defined(FEAT_EVAL) || defined(PROTO)
+
+#if defined(MACOS_X)
+# include <time.h>	// for time_t
+#endif
+
+/*
+ * "localtime()" function
+ */
+    void
+f_localtime(typval_T *argvars UNUSED, typval_T *rettv)
+{
+    rettv->vval.v_number = (varnumber_T)time(NULL);
+}
+
+# if defined(FEAT_RELTIME)
+/*
+ * Convert a List to proftime_T.
+ * Return FAIL when there is something wrong.
+ */
+    static int
+list2proftime(typval_T *arg, proftime_T *tm)
+{
+    long	n1, n2;
+    int	error = FALSE;
+
+    if (arg->v_type != VAR_LIST || arg->vval.v_list == NULL
+					     || arg->vval.v_list->lv_len != 2)
+	return FAIL;
+    n1 = list_find_nr(arg->vval.v_list, 0L, &error);
+    n2 = list_find_nr(arg->vval.v_list, 1L, &error);
+#  ifdef MSWIN
+    tm->HighPart = n1;
+    tm->LowPart = n2;
+#  else
+    tm->tv_sec = n1;
+    tm->tv_usec = n2;
+#  endif
+    return error ? FAIL : OK;
+}
+# endif // FEAT_RELTIME
+
+/*
+ * "reltime()" function
+ */
+    void
+f_reltime(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
+{
+# ifdef FEAT_RELTIME
+    proftime_T	res;
+    proftime_T	start;
+
+    if (argvars[0].v_type == VAR_UNKNOWN)
+    {
+	// No arguments: get current time.
+	profile_start(&res);
+    }
+    else if (argvars[1].v_type == VAR_UNKNOWN)
+    {
+	if (list2proftime(&argvars[0], &res) == FAIL)
+	    return;
+	profile_end(&res);
+    }
+    else
+    {
+	// Two arguments: compute the difference.
+	if (list2proftime(&argvars[0], &start) == FAIL
+		|| list2proftime(&argvars[1], &res) == FAIL)
+	    return;
+	profile_sub(&res, &start);
+    }
+
+    if (rettv_list_alloc(rettv) == OK)
+    {
+	long	n1, n2;
+
+#  ifdef MSWIN
+	n1 = res.HighPart;
+	n2 = res.LowPart;
+#  else
+	n1 = res.tv_sec;
+	n2 = res.tv_usec;
+#  endif
+	list_append_number(rettv->vval.v_list, (varnumber_T)n1);
+	list_append_number(rettv->vval.v_list, (varnumber_T)n2);
+    }
+# endif
+}
+
+# ifdef FEAT_FLOAT
+/*
+ * "reltimefloat()" function
+ */
+    void
+f_reltimefloat(typval_T *argvars UNUSED, typval_T *rettv)
+{
+#  ifdef FEAT_RELTIME
+    proftime_T	tm;
+#  endif
+
+    rettv->v_type = VAR_FLOAT;
+    rettv->vval.v_float = 0;
+#  ifdef FEAT_RELTIME
+    if (list2proftime(&argvars[0], &tm) == OK)
+	rettv->vval.v_float = profile_float(&tm);
+#  endif
+}
+# endif
+
+/*
+ * "reltimestr()" function
+ */
+    void
+f_reltimestr(typval_T *argvars UNUSED, typval_T *rettv)
+{
+# ifdef FEAT_RELTIME
+    proftime_T	tm;
+# endif
+
+    rettv->v_type = VAR_STRING;
+    rettv->vval.v_string = NULL;
+# ifdef FEAT_RELTIME
+    if (list2proftime(&argvars[0], &tm) == OK)
+	rettv->vval.v_string = vim_strsave((char_u *)profile_msg(&tm));
+# endif
+}
+
+# if defined(HAVE_STRFTIME) || defined(PROTO)
+/*
+ * "strftime({format}[, {time}])" function
+ */
+    void
+f_strftime(typval_T *argvars, typval_T *rettv)
+{
+    char_u	result_buf[256];
+    struct tm	tmval;
+    struct tm	*curtime;
+    time_t	seconds;
+    char_u	*p;
+
+    rettv->v_type = VAR_STRING;
+
+    p = tv_get_string(&argvars[0]);
+    if (argvars[1].v_type == VAR_UNKNOWN)
+	seconds = time(NULL);
+    else
+	seconds = (time_t)tv_get_number(&argvars[1]);
+    curtime = vim_localtime(&seconds, &tmval);
+    // MSVC returns NULL for an invalid value of seconds.
+    if (curtime == NULL)
+	rettv->vval.v_string = vim_strsave((char_u *)_("(Invalid)"));
+    else
+    {
+	vimconv_T   conv;
+	char_u	    *enc;
+
+	conv.vc_type = CONV_NONE;
+	enc = enc_locale();
+	convert_setup(&conv, p_enc, enc);
+	if (conv.vc_type != CONV_NONE)
+	    p = string_convert(&conv, p, NULL);
+	if (p != NULL)
+	    (void)strftime((char *)result_buf, sizeof(result_buf),
+							  (char *)p, curtime);
+	else
+	    result_buf[0] = NUL;
+
+	if (conv.vc_type != CONV_NONE)
+	    vim_free(p);
+	convert_setup(&conv, enc, p_enc);
+	if (conv.vc_type != CONV_NONE)
+	    rettv->vval.v_string = string_convert(&conv, result_buf, NULL);
+	else
+	    rettv->vval.v_string = vim_strsave(result_buf);
+
+	// Release conversion descriptors
+	convert_setup(&conv, NULL, NULL);
+	vim_free(enc);
+    }
+}
+# endif
+
+# if defined(HAVE_STRPTIME) || defined(PROTO)
+/*
+ * "strptime({format}, {timestring})" function
+ */
+    void
+f_strptime(typval_T *argvars, typval_T *rettv)
+{
+    struct tm	tmval;
+    char_u	*fmt;
+    char_u	*str;
+    vimconv_T   conv;
+    char_u	*enc;
+
+    vim_memset(&tmval, NUL, sizeof(tmval));
+    fmt = tv_get_string(&argvars[0]);
+    str = tv_get_string(&argvars[1]);
+
+    conv.vc_type = CONV_NONE;
+    enc = enc_locale();
+    convert_setup(&conv, p_enc, enc);
+    if (conv.vc_type != CONV_NONE)
+	fmt = string_convert(&conv, fmt, NULL);
+    if (fmt == NULL
+	    || strptime((char *)str, (char *)fmt, &tmval) == NULL
+	    || (rettv->vval.v_number = mktime(&tmval)) == -1)
+	rettv->vval.v_number = 0;
+
+    if (conv.vc_type != CONV_NONE)
+	vim_free(fmt);
+    convert_setup(&conv, NULL, NULL);
+    vim_free(enc);
+}
+# endif
+
+# if defined(FEAT_TIMERS) || defined(PROTO)
+static timer_T	*first_timer = NULL;
+static long	last_timer_id = 0;
+
+/*
+ * Return time left until "due".  Negative if past "due".
+ */
+    long
+proftime_time_left(proftime_T *due, proftime_T *now)
+{
+#  ifdef MSWIN
+    LARGE_INTEGER fr;
+
+    if (now->QuadPart > due->QuadPart)
+	return 0;
+    QueryPerformanceFrequency(&fr);
+    return (long)(((double)(due->QuadPart - now->QuadPart)
+		   / (double)fr.QuadPart) * 1000);
+#  else
+    if (now->tv_sec > due->tv_sec)
+	return 0;
+    return (due->tv_sec - now->tv_sec) * 1000
+	+ (due->tv_usec - now->tv_usec) / 1000;
+#  endif
+}
+
+/*
+ * Insert a timer in the list of timers.
+ */
+    static void
+insert_timer(timer_T *timer)
+{
+    timer->tr_next = first_timer;
+    timer->tr_prev = NULL;
+    if (first_timer != NULL)
+	first_timer->tr_prev = timer;
+    first_timer = timer;
+    did_add_timer = TRUE;
+}
+
+/*
+ * Take a timer out of the list of timers.
+ */
+    static void
+remove_timer(timer_T *timer)
+{
+    if (timer->tr_prev == NULL)
+	first_timer = timer->tr_next;
+    else
+	timer->tr_prev->tr_next = timer->tr_next;
+    if (timer->tr_next != NULL)
+	timer->tr_next->tr_prev = timer->tr_prev;
+}
+
+    static void
+free_timer(timer_T *timer)
+{
+    free_callback(&timer->tr_callback);
+    vim_free(timer);
+}
+
+/*
+ * Create a timer and return it.  NULL if out of memory.
+ * Caller should set the callback.
+ */
+    timer_T *
+create_timer(long msec, int repeat)
+{
+    timer_T	*timer = ALLOC_CLEAR_ONE(timer_T);
+    long	prev_id = last_timer_id;
+
+    if (timer == NULL)
+	return NULL;
+    if (++last_timer_id <= prev_id)
+	// Overflow!  Might cause duplicates...
+	last_timer_id = 0;
+    timer->tr_id = last_timer_id;
+    insert_timer(timer);
+    if (repeat != 0)
+	timer->tr_repeat = repeat - 1;
+    timer->tr_interval = msec;
+
+    profile_setlimit(msec, &timer->tr_due);
+    return timer;
+}
+
+/*
+ * Invoke the callback of "timer".
+ */
+    static void
+timer_callback(timer_T *timer)
+{
+    typval_T	rettv;
+    typval_T	argv[2];
+
+    argv[0].v_type = VAR_NUMBER;
+    argv[0].vval.v_number = (varnumber_T)timer->tr_id;
+    argv[1].v_type = VAR_UNKNOWN;
+
+    call_callback(&timer->tr_callback, -1, &rettv, 1, argv);
+    clear_tv(&rettv);
+}
+
+/*
+ * Call timers that are due.
+ * Return the time in msec until the next timer is due.
+ * Returns -1 if there are no pending timers.
+ */
+    long
+check_due_timer(void)
+{
+    timer_T	*timer;
+    timer_T	*timer_next;
+    long	this_due;
+    long	next_due = -1;
+    proftime_T	now;
+    int		did_one = FALSE;
+    int		need_update_screen = FALSE;
+    long	current_id = last_timer_id;
+
+    // Don't run any timers while exiting or dealing with an error.
+    if (exiting || aborting())
+	return next_due;
+
+    profile_start(&now);
+    for (timer = first_timer; timer != NULL && !got_int; timer = timer_next)
+    {
+	timer_next = timer->tr_next;
+
+	if (timer->tr_id == -1 || timer->tr_firing || timer->tr_paused)
+	    continue;
+	this_due = proftime_time_left(&timer->tr_due, &now);
+	if (this_due <= 1)
+	{
+	    // Save and restore a lot of flags, because the timer fires while
+	    // waiting for a character, which might be halfway a command.
+	    int save_timer_busy = timer_busy;
+	    int save_vgetc_busy = vgetc_busy;
+	    int save_did_emsg = did_emsg;
+	    int save_called_emsg = called_emsg;
+	    int save_must_redraw = must_redraw;
+	    int save_trylevel = trylevel;
+	    int save_did_throw = did_throw;
+	    int save_ex_pressedreturn = get_pressedreturn();
+	    int save_may_garbage_collect = may_garbage_collect;
+	    except_T *save_current_exception = current_exception;
+	    vimvars_save_T vvsave;
+
+	    // Create a scope for running the timer callback, ignoring most of
+	    // the current scope, such as being inside a try/catch.
+	    timer_busy = timer_busy > 0 || vgetc_busy > 0;
+	    vgetc_busy = 0;
+	    called_emsg = 0;
+	    did_emsg = FALSE;
+	    did_uncaught_emsg = FALSE;
+	    must_redraw = 0;
+	    trylevel = 0;
+	    did_throw = FALSE;
+	    current_exception = NULL;
+	    may_garbage_collect = FALSE;
+	    save_vimvars(&vvsave);
+
+	    timer->tr_firing = TRUE;
+	    timer_callback(timer);
+	    timer->tr_firing = FALSE;
+
+	    timer_next = timer->tr_next;
+	    did_one = TRUE;
+	    timer_busy = save_timer_busy;
+	    vgetc_busy = save_vgetc_busy;
+	    if (did_uncaught_emsg)
+		++timer->tr_emsg_count;
+	    did_emsg = save_did_emsg;
+	    called_emsg = save_called_emsg;
+	    trylevel = save_trylevel;
+	    did_throw = save_did_throw;
+	    current_exception = save_current_exception;
+	    restore_vimvars(&vvsave);
+	    if (must_redraw != 0)
+		need_update_screen = TRUE;
+	    must_redraw = must_redraw > save_must_redraw
+					      ? must_redraw : save_must_redraw;
+	    set_pressedreturn(save_ex_pressedreturn);
+	    may_garbage_collect = save_may_garbage_collect;
+
+	    // Only fire the timer again if it repeats and stop_timer() wasn't
+	    // called while inside the callback (tr_id == -1).
+	    if (timer->tr_repeat != 0 && timer->tr_id != -1
+		    && timer->tr_emsg_count < 3)
+	    {
+		profile_setlimit(timer->tr_interval, &timer->tr_due);
+		this_due = proftime_time_left(&timer->tr_due, &now);
+		if (this_due < 1)
+		    this_due = 1;
+		if (timer->tr_repeat > 0)
+		    --timer->tr_repeat;
+	    }
+	    else
+	    {
+		this_due = -1;
+		remove_timer(timer);
+		free_timer(timer);
+	    }
+	}
+	if (this_due > 0 && (next_due == -1 || next_due > this_due))
+	    next_due = this_due;
+    }
+
+    if (did_one)
+	redraw_after_callback(need_update_screen);
+
+#ifdef FEAT_BEVAL_TERM
+    if (bevalexpr_due_set)
+    {
+	this_due = proftime_time_left(&bevalexpr_due, &now);
+	if (this_due <= 1)
+	{
+	    bevalexpr_due_set = FALSE;
+	    if (balloonEval == NULL)
+	    {
+		balloonEval = ALLOC_CLEAR_ONE(BalloonEval);
+		balloonEvalForTerm = TRUE;
+	    }
+	    if (balloonEval != NULL)
+	    {
+		general_beval_cb(balloonEval, 0);
+		setcursor();
+		out_flush();
+	    }
+	}
+	else if (next_due == -1 || next_due > this_due)
+	    next_due = this_due;
+    }
+#endif
+#ifdef FEAT_TERMINAL
+    // Some terminal windows may need their buffer updated.
+    next_due = term_check_timers(next_due, &now);
+#endif
+
+    return current_id != last_timer_id ? 1 : next_due;
+}
+
+/*
+ * Find a timer by ID.  Returns NULL if not found;
+ */
+    static timer_T *
+find_timer(long id)
+{
+    timer_T *timer;
+
+    if (id >= 0)
+    {
+	for (timer = first_timer; timer != NULL; timer = timer->tr_next)
+	    if (timer->tr_id == id)
+		return timer;
+    }
+    return NULL;
+}
+
+
+/*
+ * Stop a timer and delete it.
+ */
+    void
+stop_timer(timer_T *timer)
+{
+    if (timer->tr_firing)
+	// Free the timer after the callback returns.
+	timer->tr_id = -1;
+    else
+    {
+	remove_timer(timer);
+	free_timer(timer);
+    }
+}
+
+    static void
+stop_all_timers(void)
+{
+    timer_T *timer;
+    timer_T *timer_next;
+
+    for (timer = first_timer; timer != NULL; timer = timer_next)
+    {
+	timer_next = timer->tr_next;
+	stop_timer(timer);
+    }
+}
+
+    static void
+add_timer_info(typval_T *rettv, timer_T *timer)
+{
+    list_T	*list = rettv->vval.v_list;
+    dict_T	*dict = dict_alloc();
+    dictitem_T	*di;
+    long	remaining;
+    proftime_T	now;
+
+    if (dict == NULL)
+	return;
+    list_append_dict(list, dict);
+
+    dict_add_number(dict, "id", timer->tr_id);
+    dict_add_number(dict, "time", (long)timer->tr_interval);
+
+    profile_start(&now);
+    remaining = proftime_time_left(&timer->tr_due, &now);
+    dict_add_number(dict, "remaining", (long)remaining);
+
+    dict_add_number(dict, "repeat",
+		    (long)(timer->tr_repeat < 0 ? -1 : timer->tr_repeat + 1));
+    dict_add_number(dict, "paused", (long)(timer->tr_paused));
+
+    di = dictitem_alloc((char_u *)"callback");
+    if (di != NULL)
+    {
+	if (dict_add(dict, di) == FAIL)
+	    vim_free(di);
+	else
+	    put_callback(&timer->tr_callback, &di->di_tv);
+    }
+}
+
+    static void
+add_timer_info_all(typval_T *rettv)
+{
+    timer_T *timer;
+
+    for (timer = first_timer; timer != NULL; timer = timer->tr_next)
+	if (timer->tr_id != -1)
+	    add_timer_info(rettv, timer);
+}
+
+/*
+ * Mark references in partials of timers.
+ */
+    int
+set_ref_in_timer(int copyID)
+{
+    int		abort = FALSE;
+    timer_T	*timer;
+    typval_T	tv;
+
+    for (timer = first_timer; !abort && timer != NULL; timer = timer->tr_next)
+    {
+	if (timer->tr_callback.cb_partial != NULL)
+	{
+	    tv.v_type = VAR_PARTIAL;
+	    tv.vval.v_partial = timer->tr_callback.cb_partial;
+	}
+	else
+	{
+	    tv.v_type = VAR_FUNC;
+	    tv.vval.v_string = timer->tr_callback.cb_name;
+	}
+	abort = abort || set_ref_in_item(&tv, copyID, NULL, NULL);
+    }
+    return abort;
+}
+
+# if defined(EXITFREE) || defined(PROTO)
+    void
+timer_free_all()
+{
+    timer_T *timer;
+
+    while (first_timer != NULL)
+    {
+	timer = first_timer;
+	remove_timer(timer);
+	free_timer(timer);
+    }
+}
+# endif
+
+/*
+ * "timer_info([timer])" function
+ */
+    void
+f_timer_info(typval_T *argvars, typval_T *rettv)
+{
+    timer_T *timer = NULL;
+
+    if (rettv_list_alloc(rettv) != OK)
+	return;
+    if (argvars[0].v_type != VAR_UNKNOWN)
+    {
+	if (argvars[0].v_type != VAR_NUMBER)
+	    emsg(_(e_number_exp));
+	else
+	{
+	    timer = find_timer((int)tv_get_number(&argvars[0]));
+	    if (timer != NULL)
+		add_timer_info(rettv, timer);
+	}
+    }
+    else
+	add_timer_info_all(rettv);
+}
+
+/*
+ * "timer_pause(timer, paused)" function
+ */
+    void
+f_timer_pause(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    timer_T	*timer = NULL;
+    int		paused = (int)tv_get_number(&argvars[1]);
+
+    if (argvars[0].v_type != VAR_NUMBER)
+	emsg(_(e_number_exp));
+    else
+    {
+	timer = find_timer((int)tv_get_number(&argvars[0]));
+	if (timer != NULL)
+	    timer->tr_paused = paused;
+    }
+}
+
+/*
+ * "timer_start(time, callback [, options])" function
+ */
+    void
+f_timer_start(typval_T *argvars, typval_T *rettv)
+{
+    long	msec = (long)tv_get_number(&argvars[0]);
+    timer_T	*timer;
+    int		repeat = 0;
+    callback_T	callback;
+    dict_T	*dict;
+
+    rettv->vval.v_number = -1;
+    if (check_secure())
+	return;
+    if (argvars[2].v_type != VAR_UNKNOWN)
+    {
+	if (argvars[2].v_type != VAR_DICT
+				   || (dict = argvars[2].vval.v_dict) == NULL)
+	{
+	    semsg(_(e_invarg2), tv_get_string(&argvars[2]));
+	    return;
+	}
+	if (dict_find(dict, (char_u *)"repeat", -1) != NULL)
+	    repeat = dict_get_number(dict, (char_u *)"repeat");
+    }
+
+    callback = get_callback(&argvars[1]);
+    if (callback.cb_name == NULL)
+	return;
+
+    timer = create_timer(msec, repeat);
+    if (timer == NULL)
+	free_callback(&callback);
+    else
+    {
+	set_callback(&timer->tr_callback, &callback);
+	rettv->vval.v_number = (varnumber_T)timer->tr_id;
+    }
+}
+
+/*
+ * "timer_stop(timer)" function
+ */
+    void
+f_timer_stop(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    timer_T *timer;
+
+    if (argvars[0].v_type != VAR_NUMBER)
+    {
+	emsg(_(e_number_exp));
+	return;
+    }
+    timer = find_timer((int)tv_get_number(&argvars[0]));
+    if (timer != NULL)
+	stop_timer(timer);
+}
+
+/*
+ * "timer_stopall()" function
+ */
+    void
+f_timer_stopall(typval_T *argvars UNUSED, typval_T *rettv UNUSED)
+{
+    stop_all_timers();
+}
+
+# endif // FEAT_TIMERS
+
+# if defined(STARTUPTIME) || defined(PROTO)
+static struct timeval	prev_timeval;
+
+#  ifdef MSWIN
+/*
+ * Windows doesn't have gettimeofday(), although it does have struct timeval.
+ */
+    static int
+gettimeofday(struct timeval *tv, char *dummy UNUSED)
+{
+    long t = clock();
+    tv->tv_sec = t / CLOCKS_PER_SEC;
+    tv->tv_usec = (t - tv->tv_sec * CLOCKS_PER_SEC) * 1000000 / CLOCKS_PER_SEC;
+    return 0;
+}
+#  endif
+
+/*
+ * Save the previous time before doing something that could nest.
+ * set "*tv_rel" to the time elapsed so far.
+ */
+    void
+time_push(void *tv_rel, void *tv_start)
+{
+    *((struct timeval *)tv_rel) = prev_timeval;
+    gettimeofday(&prev_timeval, NULL);
+    ((struct timeval *)tv_rel)->tv_usec = prev_timeval.tv_usec
+					- ((struct timeval *)tv_rel)->tv_usec;
+    ((struct timeval *)tv_rel)->tv_sec = prev_timeval.tv_sec
+					 - ((struct timeval *)tv_rel)->tv_sec;
+    if (((struct timeval *)tv_rel)->tv_usec < 0)
+    {
+	((struct timeval *)tv_rel)->tv_usec += 1000000;
+	--((struct timeval *)tv_rel)->tv_sec;
+    }
+    *(struct timeval *)tv_start = prev_timeval;
+}
+
+/*
+ * Compute the previous time after doing something that could nest.
+ * Subtract "*tp" from prev_timeval;
+ * Note: The arguments are (void *) to avoid trouble with systems that don't
+ * have struct timeval.
+ */
+    void
+time_pop(
+    void	*tp)	// actually (struct timeval *)
+{
+    prev_timeval.tv_usec -= ((struct timeval *)tp)->tv_usec;
+    prev_timeval.tv_sec -= ((struct timeval *)tp)->tv_sec;
+    if (prev_timeval.tv_usec < 0)
+    {
+	prev_timeval.tv_usec += 1000000;
+	--prev_timeval.tv_sec;
+    }
+}
+
+    static void
+time_diff(struct timeval *then, struct timeval *now)
+{
+    long	usec;
+    long	msec;
+
+    usec = now->tv_usec - then->tv_usec;
+    msec = (now->tv_sec - then->tv_sec) * 1000L + usec / 1000L,
+    usec = usec % 1000L;
+    fprintf(time_fd, "%03ld.%03ld", msec, usec >= 0 ? usec : usec + 1000L);
+}
+
+    void
+time_msg(
+    char	*mesg,
+    void	*tv_start)  // only for do_source: start time; actually
+			    // (struct timeval *)
+{
+    static struct timeval	start;
+    struct timeval		now;
+
+    if (time_fd != NULL)
+    {
+	if (strstr(mesg, "STARTING") != NULL)
+	{
+	    gettimeofday(&start, NULL);
+	    prev_timeval = start;
+	    fprintf(time_fd, "\n\ntimes in msec\n");
+	    fprintf(time_fd, " clock   self+sourced   self:  sourced script\n");
+	    fprintf(time_fd, " clock   elapsed:              other lines\n\n");
+	}
+	gettimeofday(&now, NULL);
+	time_diff(&start, &now);
+	if (((struct timeval *)tv_start) != NULL)
+	{
+	    fprintf(time_fd, "  ");
+	    time_diff(((struct timeval *)tv_start), &now);
+	}
+	fprintf(time_fd, "  ");
+	time_diff(&prev_timeval, &now);
+	prev_timeval = now;
+	fprintf(time_fd, ": %s\n", mesg);
+    }
+}
+# endif	// STARTUPTIME
+#endif // FEAT_EVAL
+
+#if defined(FEAT_SPELL) || defined(FEAT_PERSISTENT_UNDO) || defined(PROTO)
+/*
+ * Read 8 bytes from "fd" and turn them into a time_T, MSB first.
+ * Returns -1 when encountering EOF.
+ */
+    time_T
+get8ctime(FILE *fd)
+{
+    int		c;
+    time_T	n = 0;
+    int		i;
+
+    for (i = 0; i < 8; ++i)
+    {
+	c = getc(fd);
+	if (c == EOF) return -1;
+	n = (n << 8) + c;
+    }
+    return n;
+}
+
+#ifdef _MSC_VER
+# if (_MSC_VER <= 1200)
+// This line is required for VC6 without the service pack.  Also see the
+// matching #pragma below.
+ #  pragma optimize("", off)
+# endif
+#endif
+
+/*
+ * Write time_T to file "fd" in 8 bytes.
+ * Returns FAIL when the write failed.
+ */
+    int
+put_time(FILE *fd, time_T the_time)
+{
+    char_u	buf[8];
+
+    time_to_bytes(the_time, buf);
+    return fwrite(buf, (size_t)8, (size_t)1, fd) == 1 ? OK : FAIL;
+}
+
+/*
+ * Write time_T to "buf[8]".
+ */
+    void
+time_to_bytes(time_T the_time, char_u *buf)
+{
+    int		c;
+    int		i;
+    int		bi = 0;
+    time_T	wtime = the_time;
+
+    // time_T can be up to 8 bytes in size, more than long_u, thus we
+    // can't use put_bytes() here.
+    // Another problem is that ">>" may do an arithmetic shift that keeps the
+    // sign.  This happens for large values of wtime.  A cast to long_u may
+    // truncate if time_T is 8 bytes.  So only use a cast when it is 4 bytes,
+    // it's safe to assume that long_u is 4 bytes or more and when using 8
+    // bytes the top bit won't be set.
+    for (i = 7; i >= 0; --i)
+    {
+	if (i + 1 > (int)sizeof(time_T))
+	    // ">>" doesn't work well when shifting more bits than avail
+	    buf[bi++] = 0;
+	else
+	{
+#if defined(SIZEOF_TIME_T) && SIZEOF_TIME_T > 4
+	    c = (int)(wtime >> (i * 8));
+#else
+	    c = (int)((long_u)wtime >> (i * 8));
+#endif
+	    buf[bi++] = c;
+	}
+    }
+}
+
+#ifdef _MSC_VER
+# if (_MSC_VER <= 1200)
+ #  pragma optimize("", on)
+# endif
+#endif
+
+#endif
+
+/*
+ * Put timestamp "tt" in "buf[buflen]" in a nice format.
+ */
+    void
+add_time(char_u *buf, size_t buflen, time_t tt)
+{
+#ifdef HAVE_STRFTIME
+    struct tm	tmval;
+    struct tm	*curtime;
+
+    if (vim_time() - tt >= 100)
+    {
+	curtime = vim_localtime(&tt, &tmval);
+	if (vim_time() - tt < (60L * 60L * 12L))
+	    // within 12 hours
+	    (void)strftime((char *)buf, buflen, "%H:%M:%S", curtime);
+	else
+	    // longer ago
+	    (void)strftime((char *)buf, buflen, "%Y/%m/%d %H:%M:%S", curtime);
+    }
+    else
+#endif
+    {
+	long seconds = (long)(vim_time() - tt);
+
+	vim_snprintf((char *)buf, buflen,
+		NGETTEXT("%ld second ago", "%ld seconds ago", seconds),
+		seconds);
+    }
+}