diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index dfbad8fa25..e907145060 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -7561,7 +7561,11 @@ system({expr} [, {input}])				*system()* *E677*
 		If {input} is given and is a |List| it is written to the file
 		in a way |writefile()| does with {binary} set to "b" (i.e.
 		with a newline between each list item with newlines inside
-		list items converted to NULs).  
+		list items converted to NULs).
+		When {input} is given and is a number that is a valid id for
+		an existing buffer then the content of the buffer is written
+		to the file line by line, each line terminated by a NL and
+		NULs characters where the text has a NL.
 
 		Pipes are not used, the 'shelltemp' option is not used.
 
diff --git a/src/Makefile b/src/Makefile
index 715ec17e78..10612fda94 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2121,6 +2121,7 @@ test_arglist \
 	test_fileformat \
 	test_filter_cmd \
 	test_filter_map \
+	test_float_func \
 	test_fnameescape \
 	test_fnamemodify \
 	test_fold \
@@ -2181,6 +2182,7 @@ test_arglist \
 	test_substitute \
 	test_syn_attr \
 	test_syntax \
+	test_system \
 	test_tabline \
 	test_tabpage \
 	test_tagcase \
diff --git a/src/channel.c b/src/channel.c
index 7fa7e59620..7eb21ce507 100644
--- a/src/channel.c
+++ b/src/channel.c
@@ -1588,7 +1588,7 @@ invoke_callback(channel_T *channel, char_u *callback, partial_T *partial,
     int		dummy;
 
     if (safe_to_invoke_callback == 0)
-	EMSG("INTERNAL: Invoking callback when it is not safe");
+	IEMSG("INTERNAL: Invoking callback when it is not safe");
 
     argv[0].v_type = VAR_CHANNEL;
     argv[0].vval.v_channel = channel;
diff --git a/src/eval.c b/src/eval.c
index 9d2c5ac72b..11fc035fb4 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -270,7 +270,7 @@ eval_init(void)
 	p = &vimvars[i];
 	if (STRLEN(p->vv_name) > 16)
 	{
-	    EMSG("INTERNAL: name too long, increase size of dictitem16_T");
+	    IEMSG("INTERNAL: name too long, increase size of dictitem16_T");
 	    getout(1);
 	}
 	STRCPY(p->vv_di.di_key, p->vv_name);
@@ -5971,6 +5971,22 @@ string2float(
     char	*s = (char *)text;
     float_T	f;
 
+    /* MS-Windows does not deal with "inf" and "nan" properly. */
+    if (STRNICMP(text, "inf", 3) == 0)
+    {
+	*value = INFINITY;
+	return 3;
+    }
+    if (STRNICMP(text, "-inf", 3) == 0)
+    {
+	*value = -INFINITY;
+	return 4;
+    }
+    if (STRNICMP(text, "nan", 3) == 0)
+    {
+	*value = NAN;
+	return 3;
+    }
     f = strtod(s, &s);
     *value = f;
     return (int)((char_u *)s - text);
diff --git a/src/evalfunc.c b/src/evalfunc.c
index a29d666c2f..37855d9c54 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -11844,7 +11844,6 @@ get_cmd_output_as_rettv(
     char_u	*res = NULL;
     char_u	*p;
     char_u	*infile = NULL;
-    char_u	buf[NUMBUFLEN];
     int		err = FALSE;
     FILE	*fd;
     list_T	*list = NULL;
@@ -11858,7 +11857,7 @@ get_cmd_output_as_rettv(
     if (argvars[1].v_type != VAR_UNKNOWN)
     {
 	/*
-	 * Write the string to a temp file, to be used for input of the shell
+	 * Write the text to a temp file, to be used for input of the shell
 	 * command.
 	 */
 	if ((infile = vim_tempname('i', TRUE)) == NULL)
@@ -11873,14 +11872,42 @@ get_cmd_output_as_rettv(
 	    EMSG2(_(e_notopen), infile);
 	    goto errret;
 	}
-	if (argvars[1].v_type == VAR_LIST)
+	if (argvars[1].v_type == VAR_NUMBER)
+	{
+	    linenr_T	lnum;
+	    buf_T	*buf;
+
+	    buf = buflist_findnr(argvars[1].vval.v_number);
+	    if (buf == NULL)
+	    {
+		EMSGN(_(e_nobufnr), argvars[1].vval.v_number);
+		goto errret;
+	    }
+
+	    for (lnum = 1; lnum <= buf->b_ml.ml_line_count; lnum++)
+	    {
+		for (p = ml_get_buf(buf, lnum, FALSE); *p != NUL; ++p)
+		    if (putc(*p == '\n' ? NUL : *p, fd) == EOF)
+		    {
+			err = TRUE;
+			break;
+		    }
+		if (putc(NL, fd) == EOF)
+		{
+		    err = TRUE;
+		    break;
+		}
+	    }
+	}
+	else if (argvars[1].v_type == VAR_LIST)
 	{
 	    if (write_list(fd, argvars[1].vval.v_list, TRUE) == FAIL)
 		err = TRUE;
 	}
 	else
 	{
-	    size_t len;
+	    size_t	len;
+	    char_u	buf[NUMBUFLEN];
 
 	    p = get_tv_string_buf_chk(&argvars[1], buf);
 	    if (p == NULL)
diff --git a/src/ex_getln.c b/src/ex_getln.c
index ce7419a7ee..ab26205cd4 100644
--- a/src/ex_getln.c
+++ b/src/ex_getln.c
@@ -772,7 +772,9 @@ getcmdline(
 		/*
 		 * Open a window to edit the command line (and history).
 		 */
+		save_cmdline(&save_ccline);
 		c = ex_window();
+		restore_cmdline(&save_ccline);
 		some_key_typed = TRUE;
 	    }
 	}
diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index fcca818288..919dadcb0c 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -1359,7 +1359,7 @@ nfa_regatom(void)
 		    rc_did_emsg = TRUE;
 		    return FAIL;
 		}
-		EMSGN("INTERNAL: Unknown character class char: %ld", c);
+		IEMSGN("INTERNAL: Unknown character class char: %ld", c);
 		return FAIL;
 	    }
 #ifdef FEAT_MBYTE
@@ -4925,7 +4925,7 @@ check_char_class(int class, int c)
 
 	default:
 	    /* should not be here :P */
-	    EMSGN(_(e_ill_char_class), class);
+	    IEMSGN(_(e_ill_char_class), class);
 	    return FAIL;
     }
     return FAIL;
@@ -6688,7 +6688,7 @@ nfa_regmatch(
 
 #ifdef DEBUG
 		if (c < 0)
-		    EMSGN("INTERNAL: Negative state char: %ld", c);
+		    IEMSGN("INTERNAL: Negative state char: %ld", c);
 #endif
 		result = (c == curc);
 
@@ -7216,7 +7216,7 @@ nfa_regcomp(char_u *expr, int re_flags)
     {
 	/* TODO: only give this error for debugging? */
 	if (post_ptr >= post_end)
-	    EMSGN("Internal error: estimated max number of states insufficient: %ld", post_end - post_start);
+	    IEMSGN("Internal error: estimated max number of states insufficient: %ld", post_end - post_start);
 	goto fail;	    /* Cascaded (syntax?) error */
     }
 
diff --git a/src/screen.c b/src/screen.c
index e20d062e14..8a3983e57e 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -3650,7 +3650,7 @@ win_line(
 		if (fdc > 0)
 		{
 		    /* Draw the 'foldcolumn'.  Allocate a buffer, "extra" may
-		     * already be in used. */
+		     * already be in use. */
 		    p_extra_free = alloc(12 + 1);
 
 		    if (p_extra_free != NULL)
@@ -10373,6 +10373,8 @@ draw_tabline(void)
 #endif
 					    );
 
+    if (ScreenLines == NULL)
+	return;
     redraw_tabline = FALSE;
 
 #ifdef FEAT_GUI_TABLINE
diff --git a/src/syntax.c b/src/syntax.c
index 6fd76e4680..78ec1ba662 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -6383,7 +6383,9 @@ syntax_present(win_T *win)
 static enum
 {
     EXP_SUBCMD,	    /* expand ":syn" sub-commands */
-    EXP_CASE	    /* expand ":syn case" arguments */
+    EXP_CASE,	    /* expand ":syn case" arguments */
+    EXP_SPELL,	    /* expand ":syn spell" arguments */
+    EXP_SYNC	    /* expand ":syn sync" arguments */
 } expand_what;
 
 /*
@@ -6434,6 +6436,10 @@ set_context_in_syntax_cmd(expand_T *xp, char_u *arg)
 		xp->xp_context = EXPAND_NOTHING;
 	    else if (STRNICMP(arg, "case", p - arg) == 0)
 		expand_what = EXP_CASE;
+	    else if (STRNICMP(arg, "spell", p - arg) == 0)
+		expand_what = EXP_SPELL;
+	    else if (STRNICMP(arg, "sync", p - arg) == 0)
+		expand_what = EXP_SYNC;
 	    else if (  STRNICMP(arg, "keyword", p - arg) == 0
 		    || STRNICMP(arg, "region", p - arg) == 0
 		    || STRNICMP(arg, "match", p - arg) == 0
@@ -6445,8 +6451,6 @@ set_context_in_syntax_cmd(expand_T *xp, char_u *arg)
     }
 }
 
-static char *(case_args[]) = {"match", "ignore", NULL};
-
 /*
  * Function given to ExpandGeneric() to obtain the list syntax names for
  * expansion.
@@ -6454,9 +6458,31 @@ static char *(case_args[]) = {"match", "ignore", NULL};
     char_u *
 get_syntax_name(expand_T *xp UNUSED, int idx)
 {
-    if (expand_what == EXP_SUBCMD)
-	return (char_u *)subcommands[idx].name;
-    return (char_u *)case_args[idx];
+    switch (expand_what)
+    {
+	case EXP_SUBCMD:
+	    return (char_u *)subcommands[idx].name;
+	case EXP_CASE:
+	{
+	    static char *case_args[] = {"match", "ignore", NULL};
+	    return (char_u *)case_args[idx];
+	}
+	case EXP_SPELL:
+	{
+	    static char *spell_args[] =
+		{"toplevel", "notoplevel", "default", NULL};
+	    return (char_u *)spell_args[idx];
+	}
+	case EXP_SYNC:
+	{
+	    static char *sync_args[] =
+		{"ccomment", "clear", "fromstart",
+		 "linebreaks=", "linecont", "lines=", "match",
+		 "maxlines=", "minlines=", "region", NULL};
+	    return (char_u *)sync_args[idx];
+	}
+    }
+    return NULL;
 }
 
 #endif /* FEAT_CMDL_COMPL */
@@ -6704,8 +6730,10 @@ syntime_report(void)
 	}
     }
 
-    /* sort on total time */
-    qsort(ga.ga_data, (size_t)ga.ga_len, sizeof(time_entry_T),
+    /* Sort on total time. Skip if there are no items to avoid passing NULL
+     * pointer to qsort(). */
+    if (ga.ga_len > 1)
+	qsort(ga.ga_data, (size_t)ga.ga_len, sizeof(time_entry_T),
 							 syn_compare_syntime);
 
     MSG_PUTS_TITLE(_("  TOTAL      COUNT  MATCH   SLOWEST     AVERAGE   NAME               PATTERN"));
diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index 072c61c796..63a1b051f0 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -184,6 +184,7 @@ NEW_TESTS = test_arglist.res \
 	    test_stat.res \
 	    test_substitute.res \
 	    test_syntax.res \
+	    test_system.res \
 	    test_textobjects.res \
 	    test_undo.res \
 	    test_usercommands.res \
diff --git a/src/testdir/test_alot.vim b/src/testdir/test_alot.vim
index d24b97fb92..6e989f6203 100644
--- a/src/testdir/test_alot.vim
+++ b/src/testdir/test_alot.vim
@@ -16,6 +16,7 @@ source test_file_perm.vim
 source test_fileformat.vim
 source test_filter_cmd.vim
 source test_filter_map.vim
+source test_float_func.vim
 source test_fnamemodify.vim
 source test_glob2regpat.vim
 source test_goto.vim
diff --git a/src/testdir/test_channel.vim b/src/testdir/test_channel.vim
index 7baac1d677..81de17c34b 100644
--- a/src/testdir/test_channel.vim
+++ b/src/testdir/test_channel.vim
@@ -279,7 +279,6 @@ func Ch_channel_handler(port)
 endfunc
 
 func Test_channel_handler()
-call ch_logfile('channellog', 'w')
   call ch_log('Test_channel_handler()')
   let g:Ch_reply = ""
   let s:chopt.callback = 'Ch_handler'
diff --git a/src/testdir/test_float_func.vim b/src/testdir/test_float_func.vim
new file mode 100644
index 0000000000..e51b83eff2
--- /dev/null
+++ b/src/testdir/test_float_func.vim
@@ -0,0 +1,231 @@
+" test float functions
+
+if !has('float')
+  finish
+end
+
+func Test_abs()
+  call assert_equal('1.23', string(abs(1.23)))
+  call assert_equal('1.23', string(abs(-1.23)))
+  call assert_equal('0.0', string(abs(0.0)))
+  call assert_equal('0.0', string(abs(1.0/(1.0/0.0))))
+  call assert_equal('0.0', string(abs(-1.0/(1.0/0.0))))
+  call assert_equal('inf', string(abs(1.0/0.0)))
+  call assert_equal('inf', string(abs(-1.0/0.0)))
+  call assert_equal('nan', string(abs(0.0/0.0)))
+endfunc
+
+func Test_sqrt()
+  call assert_equal('0.0', string(sqrt(0.0)))
+  call assert_equal('1.414214', string(sqrt(2.0)))
+  call assert_equal('inf', string(sqrt(1.0/0.0)))
+  call assert_equal('nan', string(sqrt(-1.0)))
+  call assert_equal('nan', string(sqrt(0.0/0.0)))
+endfunc
+
+func Test_log()
+  call assert_equal('0.0', string(log(1.0)))
+  call assert_equal('-0.693147', string(log(0.5)))
+  call assert_equal('-inf', string(log(0.0)))
+  call assert_equal('nan', string(log(-1.0)))
+  call assert_equal('inf', string(log(1.0/0.0)))
+  call assert_equal('nan', string(log(0.0/0.0)))
+endfunc
+
+func Test_log10()
+  call assert_equal('0.0', string(log10(1.0)))
+  call assert_equal('2.0', string(log10(100.0)))
+  call assert_equal('2.079181', string(log10(120.0)))
+  call assert_equal('-inf', string(log10(0.0)))
+  call assert_equal('nan', string(log10(-1.0)))
+  call assert_equal('inf', string(log10(1.0/0.0)))
+  call assert_equal('nan', string(log10(0.0/0.0)))
+endfunc
+
+func Test_exp()
+  call assert_equal('1.0', string(exp(0.0)))
+  call assert_equal('7.389056', string(exp(2.0)))
+  call assert_equal('0.367879', string(exp(-1.0)))
+  call assert_equal('inf', string(exp(1.0/0.0)))
+  call assert_equal('0.0', string(exp(-1.0/0.0)))
+  call assert_equal('nan', string(exp(0.0/0.0)))
+endfunc
+
+func Test_sin()
+  call assert_equal('0.0', string(sin(0.0)))
+  call assert_equal('0.841471', string(sin(1.0)))
+  call assert_equal('-0.479426', string(sin(-0.5)))
+  call assert_equal('nan', string(sin(0.0/0.0)))
+  call assert_equal('nan', string(sin(1.0/0.0)))
+  call assert_equal('0.0', string(sin(1.0/(1.0/0.0))))
+  call assert_equal('-0.0', string(sin(-1.0/(1.0/0.0))))
+endfunc
+
+func Test_asin()
+  call assert_equal('0.0', string(asin(0.0)))
+  call assert_equal('1.570796', string(asin(1.0)))
+  call assert_equal('-0.523599', string(asin(-0.5)))
+  call assert_equal('nan', string(asin(1.1)))
+  call assert_equal('nan', string(asin(1.0/0.0)))
+  call assert_equal('nan', string(asin(0.0/0.0)))
+endfunc
+
+func Test_sinh()
+  call assert_equal('0.0', string(sinh(0.0)))
+  call assert_equal('0.521095', string(sinh(0.5)))
+  call assert_equal('-1.026517', string(sinh(-0.9)))
+  call assert_equal('inf', string(sinh(1.0/0.0)))
+  call assert_equal('-inf', string(sinh(-1.0/0.0)))
+  call assert_equal('nan', string(sinh(0.0/0.0)))
+endfunc
+
+func Test_cos()
+  call assert_equal('1.0', string(cos(0.0)))
+  call assert_equal('0.540302', string(cos(1.0)))
+  call assert_equal('0.877583', string(cos(-0.5)))
+  call assert_equal('nan', string(cos(0.0/0.0)))
+  call assert_equal('nan', string(cos(1.0/0.0)))
+endfunc
+
+func Test_acos()
+  call assert_equal('1.570796', string(acos(0.0)))
+  call assert_equal('0.0', string(acos(1.0)))
+  call assert_equal('3.141593', string(acos(-1.0)))
+  call assert_equal('2.094395', string(acos(-0.5)))
+  call assert_equal('nan', string(acos(1.1)))
+  call assert_equal('nan', string(acos(1.0/0.0)))
+  call assert_equal('nan', string(acos(0.0/0.0)))
+endfunc
+
+func Test_cosh()
+  call assert_equal('1.0', string(cosh(0.0)))
+  call assert_equal('1.127626', string(cosh(0.5)))
+  call assert_equal('inf', string(cosh(1.0/0.0)))
+  call assert_equal('inf', string(cosh(-1.0/0.0)))
+  call assert_equal('nan', string(cosh(0.0/0.0)))
+endfunc
+
+func Test_tan()
+  call assert_equal('0.0', string(tan(0.0)))
+  call assert_equal('0.546302', string(tan(0.5)))
+  call assert_equal('-0.546302', string(tan(-0.5)))
+  call assert_equal('nan', string(tan(1.0/0.0)))
+  call assert_equal('nan', string(cos(0.0/0.0)))
+  call assert_equal('0.0', string(tan(1.0/(1.0/0.0))))
+  call assert_equal('-0.0', string(tan(-1.0/(1.0/0.0))))
+endfunc
+
+func Test_atan()
+  call assert_equal('0.0', string(atan(0.0)))
+  call assert_equal('0.463648', string(atan(0.5)))
+  call assert_equal('-0.785398', string(atan(-1.0)))
+  call assert_equal('1.570796', string(atan(1.0/0.0)))
+  call assert_equal('-1.570796', string(atan(-1.0/0.0)))
+  call assert_equal('nan', string(atan(0.0/0.0)))
+endfunc
+
+func Test_atan2()
+  call assert_equal('-2.356194', string(atan2(-1, -1)))
+  call assert_equal('2.356194', string(atan2(1, -1)))
+  call assert_equal('0.0', string(atan2(1.0, 1.0/0.0)))
+  call assert_equal('1.570796', string(atan2(1.0/0.0, 1.0)))
+  call assert_equal('nan', string(atan2(0.0/0.0, 1.0)))
+endfunc
+
+func Test_tanh()
+  call assert_equal('0.0', string(tanh(0.0)))
+  call assert_equal('0.462117', string(tanh(0.5)))
+  call assert_equal('-0.761594', string(tanh(-1.0)))
+  call assert_equal('1.0', string(tanh(1.0/0.0)))
+  call assert_equal('-1.0', string(tanh(-1.0/0.0)))
+  call assert_equal('nan', string(tanh(0.0/0.0)))
+endfunc
+
+func Test_fmod()
+  call assert_equal('0.13', string(fmod(12.33, 1.22)))
+  call assert_equal('-0.13', string(fmod(-12.33, 1.22)))
+  call assert_equal('nan', string(fmod(1.0/0.0, 1.0)))
+  " On Windows we get "nan" instead of 1.0, accept both.
+  let res = string(fmod(1.0, 1.0/0.0))
+  if res != 'nan'
+    call assert_equal('1.0', res)
+  endif
+  call assert_equal('nan', string(fmod(1.0, 0.0)))
+endfunc
+
+func Test_pow()
+  call assert_equal('1.0', string(pow(0.0, 0.0)))
+  call assert_equal('8.0', string(pow(2.0, 3.0)))
+  call assert_equal('nan', string(pow(2.0, 0.0/0.0)))
+  call assert_equal('nan', string(pow(0.0/0.0, 3.0)))
+  call assert_equal('nan', string(pow(0.0/0.0, 3.0)))
+  call assert_equal('inf', string(pow(2.0, 1.0/0.0)))
+  call assert_equal('inf', string(pow(1.0/0.0, 3.0)))
+endfunc
+
+func Test_str2float()
+  call assert_equal('1.0', string(str2float('1')))
+  call assert_equal('1.23', string(str2float('1.23')))
+  call assert_equal('1.23', string(str2float('1.23abc')))
+  call assert_equal('1.0e40', string(str2float('1e40')))
+  call assert_equal('inf', string(str2float('1e1000')))
+  call assert_equal('inf', string(str2float('inf')))
+  call assert_equal('-inf', string(str2float('-inf')))
+  call assert_equal('inf', string(str2float('Inf')))
+  call assert_equal('nan', string(str2float('nan')))
+  call assert_equal('nan', string(str2float('NaN')))
+endfunc
+
+func Test_floor()
+  call assert_equal('2.0', string(floor(2.0)))
+  call assert_equal('2.0', string(floor(2.11)))
+  call assert_equal('2.0', string(floor(2.99)))
+  call assert_equal('-3.0', string(floor(-2.11)))
+  call assert_equal('-3.0', string(floor(-2.99)))
+  call assert_equal('nan', string(floor(0.0/0.0)))
+  call assert_equal('inf', string(floor(1.0/0.0)))
+  call assert_equal('-inf', string(floor(-1.0/0.0)))
+endfunc
+
+func Test_ceil()
+  call assert_equal('2.0', string(ceil(2.0)))
+  call assert_equal('3.0', string(ceil(2.11)))
+  call assert_equal('3.0', string(ceil(2.99)))
+  call assert_equal('-2.0', string(ceil(-2.11)))
+  call assert_equal('-2.0', string(ceil(-2.99)))
+  call assert_equal('nan', string(ceil(0.0/0.0)))
+  call assert_equal('inf', string(ceil(1.0/0.0)))
+  call assert_equal('-inf', string(ceil(-1.0/0.0)))
+endfunc
+
+func Test_round()
+  call assert_equal('2.0', string(round(2.1)))
+  call assert_equal('3.0', string(round(2.5)))
+  call assert_equal('3.0', string(round(2.9)))
+  call assert_equal('-2.0', string(round(-2.1)))
+  call assert_equal('-3.0', string(round(-2.5)))
+  call assert_equal('-3.0', string(round(-2.9)))
+  call assert_equal('nan', string(round(0.0/0.0)))
+  call assert_equal('inf', string(round(1.0/0.0)))
+  call assert_equal('-inf', string(round(-1.0/0.0)))
+endfunc
+
+func Test_trunc()
+  call assert_equal('2.0', string(trunc(2.1)))
+  call assert_equal('2.0', string(trunc(2.5)))
+  call assert_equal('2.0', string(trunc(2.9)))
+  call assert_equal('-2.0', string(trunc(-2.1)))
+  call assert_equal('-2.0', string(trunc(-2.5)))
+  call assert_equal('-2.0', string(trunc(-2.9)))
+  call assert_equal('nan', string(trunc(0.0/0.0)))
+  call assert_equal('inf', string(trunc(1.0/0.0)))
+  call assert_equal('-inf', string(trunc(-1.0/0.0)))
+endfunc
+
+func Test_isnan()
+  call assert_equal(0, isnan(1.0))
+  call assert_equal(1, isnan(0.0/0.0))
+  call assert_equal(0, isnan(1.0/0.0))
+  call assert_equal(0, isnan('a'))
+  call assert_equal(0, isnan([]))
+endfunc
diff --git a/src/testdir/test_syntax.vim b/src/testdir/test_syntax.vim
index 7cb67e6771..23ef1549e7 100644
--- a/src/testdir/test_syntax.vim
+++ b/src/testdir/test_syntax.vim
@@ -150,6 +150,12 @@ func Test_syntax_completion()
   call feedkeys(":syn case \<C-A>\<C-B>\"\<CR>", 'tx')
   call assert_equal('"syn case ignore match', @:)
 
+  call feedkeys(":syn spell \<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal('"syn spell default notoplevel toplevel', @:)
+
+  call feedkeys(":syn sync \<C-A>\<C-B>\"\<CR>", 'tx')
+  call assert_equal('"syn sync ccomment clear fromstart linebreaks= linecont lines= match maxlines= minlines= region', @:)
+
   call feedkeys(":syn list \<C-A>\<C-B>\"\<CR>", 'tx')
   call assert_match('^"syn list Boolean Character ', @:)
 
diff --git a/src/testdir/test_system.vim b/src/testdir/test_system.vim
new file mode 100644
index 0000000000..0446bd9105
--- /dev/null
+++ b/src/testdir/test_system.vim
@@ -0,0 +1,48 @@
+" Tests for system() and systemlist()
+
+function! Test_System()
+  if !executable('echo') || !executable('cat') || !executable('wc')
+    return
+  endif
+  let out = system('echo 123')
+  " On Windows we may get a trailing space.
+  if out != "123 \n"
+    call assert_equal("123\n", out)
+  endif
+
+  let out = systemlist('echo 123')
+  " On Windows we may get a trailing space and CR.
+  if out != ["123 \r"]
+    call assert_equal(['123'], out)
+  endif
+
+  call assert_equal('123',   system('cat', '123'))
+  call assert_equal(['123'], systemlist('cat', '123'))
+  call assert_equal(["as\<NL>df"], systemlist('cat', ["as\<NL>df"]))
+
+  new Xdummy
+  call setline(1, ['asdf', "pw\<NL>er", 'xxxx'])
+  let out = system('wc -l', bufnr('%'))
+  " On OS/X we get leading spaces
+  let out = substitute(out, '^ *', '', '')
+  call assert_equal("3\n", out)
+
+  let out = systemlist('wc -l', bufnr('%'))
+  " On Windows we may get a trailing CR.
+  if out != ["3\r"]
+    " On OS/X we get leading spaces
+    if type(out) == v:t_list
+      let out[0] = substitute(out[0], '^ *', '', '')
+    endif
+    call assert_equal(['3'],  out)
+  endif
+
+  let out = systemlist('cat', bufnr('%'))
+  " On Windows we may get a trailing CR.
+  if out != ["asdf\r", "pw\<NL>er\r", "xxxx\r"]
+    call assert_equal(['asdf', "pw\<NL>er", 'xxxx'],  out)
+  endif
+  bwipe!
+
+  call assert_fails('call system("wc -l", 99999)', 'E86:')
+endfunction
diff --git a/src/version.c b/src/version.c
index 242f4b5677..44fb693e0e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -779,6 +779,26 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    160,
+/**/
+    159,
+/**/
+    158,
+/**/
+    157,
+/**/
+    156,
+/**/
+    155,
+/**/
+    154,
+/**/
+    153,
+/**/
+    152,
+/**/
+    151,
 /**/
     150,
 /**/