diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 97df49c1b3..506a7b8c6e 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -2463,6 +2463,7 @@ tolower({expr})			String	the String {expr} switched to lowercase
 toupper({expr})			String	the String {expr} switched to uppercase
 tr({src}, {fromstr}, {tostr})	String	translate chars of {src} in {fromstr}
 					to chars in {tostr}
+trim({text}[, {mask}]) 		String	trim characters in {mask} from {text}
 trunc({expr})			Float	truncate Float {expr}
 type({name})			Number	type of variable {name}
 undofile({name})		String	undo file name for {name}
@@ -8659,6 +8660,22 @@ tr({src}, {fromstr}, {tostr})				*tr()*
 			echo tr("<blob>", "<>", "{}")
 <		returns "{blob}"
 
+trim({text}[, {mask}])						*trim()*
+		Return {text} as a String where any character in {mask} is
+		removed from the beginning and  end of {text}.
+		If {mask} is not given, {mask} is all characters up to 0x20,
+		which includes Tab, space, NL and CR, plus the non-breaking
+		space character 0xa0.
+		This code deals with multibyte characters properly.
+
+		Examples: >
+			echo trim("  \r\t\t\r RESERVE \t \t\n\x0B\x0B")."_TAIL"
+<		returns "RESERVE_TAIL" >
+			echo trim("needrmvRESERVEnnneeedddrrmmmmvv", "ednmrv")
+<		returns "RESERVE" >
+			echo trim("rm<blob1><blob2><any_chars>rrmm<blob1><blob2><blob2>", "rm<blob1><blob2>")
+<		returns "any_chas"
+
 trunc({expr})							*trunc()*
 		Return the largest integral value with magnitude less than or
 		equal to {expr} as a |Float| (truncate towards zero).
diff --git a/src/buffer.c b/src/buffer.c
index af9d5b7ba9..69a8112ee8 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -291,6 +291,13 @@ open_buffer(
 	unchanged(curbuf, FALSE);
     save_file_ff(curbuf);		/* keep this fileformat */
 
+    /* Set last_changedtick to avoid triggering a TextChanged autocommand right
+     * after it was added. */
+    curbuf->b_last_changedtick = CHANGEDTICK(curbuf);
+#ifdef FEAT_INS_EXPAND
+    curbuf->b_last_changedtick_pum = CHANGEDTICK(curbuf);
+#endif
+
     /* require "!" to overwrite the file, because it wasn't read completely */
 #ifdef FEAT_EVAL
     if (aborting())
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 7740706509..3d01cc22a0 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -430,6 +430,7 @@ static void f_timer_stopall(typval_T *argvars, typval_T *rettv);
 static void f_tolower(typval_T *argvars, typval_T *rettv);
 static void f_toupper(typval_T *argvars, typval_T *rettv);
 static void f_tr(typval_T *argvars, typval_T *rettv);
+static void f_trim(typval_T *argvars, typval_T *rettv);
 #ifdef FEAT_FLOAT
 static void f_trunc(typval_T *argvars, typval_T *rettv);
 #endif
@@ -899,6 +900,7 @@ static struct fst
     {"tolower",		1, 1, f_tolower},
     {"toupper",		1, 1, f_toupper},
     {"tr",		3, 3, f_tr},
+    {"trim",		1, 2, f_trim},
 #ifdef FEAT_FLOAT
     {"trunc",		1, 1, f_trunc},
 #endif
@@ -5546,7 +5548,7 @@ f_getwinpos(typval_T *argvars UNUSED, typval_T *rettv)
 	return;
 #ifdef FEAT_GUI
     if (gui.in_use)
-	gui_mch_get_winpos(&x, &y);
+	(void)gui_mch_get_winpos(&x, &y);
 # if defined(HAVE_TGETENT) && defined(FEAT_TERMRESPONSE)
     else
 # endif
@@ -13230,6 +13232,72 @@ error:
     rettv->vval.v_string = ga.ga_data;
 }
 
+/*
+ * "trim({expr})" function
+ */
+    static void
+f_trim(typval_T *argvars, typval_T *rettv)
+{
+    char_u	buf1[NUMBUFLEN];
+    char_u	buf2[NUMBUFLEN];
+    char_u	*head = get_tv_string_buf_chk(&argvars[0], buf1);
+    char_u	*mask = NULL;
+    char_u	*tail;
+    char_u	*prev;
+    char_u	*p;
+    int		c1;
+
+    rettv->v_type = VAR_STRING;
+    if (head == NULL)
+    {
+	rettv->vval.v_string = NULL;
+	return;
+    }
+
+    if (argvars[1].v_type == VAR_STRING)
+	mask = get_tv_string_buf_chk(&argvars[1], buf2);
+
+    while (*head != NUL)
+    {
+	c1 = PTR2CHAR(head);
+	if (mask == NULL)
+	{
+	    if (c1 > ' ' && c1 != 0xa0)
+		break;
+	}
+	else
+	{
+	    for (p = mask; *p != NUL; MB_PTR_ADV(p))
+		if (c1 == PTR2CHAR(p))
+		    break;
+	    if (*p == NUL)
+		break;
+	}
+	MB_PTR_ADV(head);
+    }
+
+    for (tail = head + STRLEN(head); tail > head; tail = prev)
+    {
+	prev = tail;
+	MB_PTR_BACK(head, prev);
+	c1 = PTR2CHAR(prev);
+	if (mask == NULL)
+	{
+	    if (c1 > ' ' && c1 != 0xa0)
+		break;
+	}
+	else
+	{
+	    for (p = mask; *p != NUL; MB_PTR_ADV(p))
+		if (c1 == PTR2CHAR(p))
+		    break;
+	    if (*p == NUL)
+		break;
+	}
+    }
+    rettv->vval.v_string = vim_strnsave(head, (int)(tail - head));
+}
+
 #ifdef FEAT_FLOAT
 /*
  * "trunc({float})" function
diff --git a/src/libvterm/src/vterm_internal.h b/src/libvterm/src/vterm_internal.h
index 3e7f1e5cb3..a06d57775c 100644
--- a/src/libvterm/src/vterm_internal.h
+++ b/src/libvterm/src/vterm_internal.h
@@ -5,7 +5,7 @@
 
 #include <stdarg.h>
 
-#if defined(__GNUC__)
+#if defined(__GNUC__) && !defined(__MINGW32__)
 # define INTERNAL __attribute__((visibility("internal")))
 # define UNUSED __attribute__((unused))
 #else
diff --git a/src/main.c b/src/main.c
index 634e25b937..aa026e0e9c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1464,6 +1464,9 @@ getout(int exitval)
     win_T	*wp;
 
     exiting = TRUE;
+#if defined(FEAT_JOB_CHANNEL)
+    ch_log(NULL, "Exiting...");
+#endif
 
     /* When running in Ex mode an error causes us to exit with a non-zero exit
      * code.  POSIX requires this, although it's not 100% clear from the
diff --git a/src/os_unix.c b/src/os_unix.c
index 150ca57aca..3dee1c7c32 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -603,7 +603,7 @@ mch_total_mem(int special UNUSED)
 #  ifdef MAC_OS_X_VERSION_10_9
 					    + vm_stat.compressor_page_count
 #  endif
-					    ) * getpagesize();
+					    ) * sysconf(_SC_PAGESIZE);
 	mach_port_deallocate(mach_task_self(), host);
     }
 # endif
diff --git a/src/terminal.c b/src/terminal.c
index b406609599..8019e899c0 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -3401,6 +3401,15 @@ f_term_dumpwrite(typval_T *argvars, typval_T *rettv UNUSED)
 
 	    for (i = 0; i < VTERM_MAX_CHARS_PER_CELL; ++i)
 	    {
+		int c = cell.chars[i];
+		int pc = prev_cell.chars[i];
+
+		/* For the first character NUL is the same as space. */
+		if (i == 0)
+		{
+		    c = (c == NUL) ? ' ' : c;
+		    pc = (pc == NUL) ? ' ' : pc;
+		}
 		if (cell.chars[i] != prev_cell.chars[i])
 		    same_chars = FALSE;
 		if (cell.chars[i] == NUL || prev_cell.chars[i] == NUL)
diff --git a/src/testdir/screendump.vim b/src/testdir/screendump.vim
index 1016646c5b..c84221580c 100644
--- a/src/testdir/screendump.vim
+++ b/src/testdir/screendump.vim
@@ -26,6 +26,10 @@ source shared.vim
 "
 " Options is a dictionary (not used yet).
 func RunVimInTerminal(arguments, options)
+  " If Vim doesn't exit a swap file remains, causing other tests to fail.
+  " Remove it here.
+  call delete(".swp")
+
   " Make a horizontal and vertical split, so that we can get exactly the right
   " size terminal window.  Works only when we currently have one window.
   call assert_equal(1, winnr('$'))
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 7716340352..a8142ef55c 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -1,5 +1,7 @@
 " Tests for autocommands
 
+source shared.vim
+
 func! s:cleanup_buffers() abort
   for bnr in range(1, bufnr('$'))
     if bufloaded(bnr) && bufnr('%') != bnr
@@ -1304,3 +1306,22 @@ func Test_ChangedP()
 
   bw!
 endfunc
+
+func Test_Changed_FirstTime()
+  if !has('terminal') || has('gui_running')
+    return
+  endif
+  " Prepare file for TextChanged event.
+  call writefile([''], 'Xchanged.txt')
+  let buf = term_start([GetVimProg(), '--clean', '-c', 'set noswapfile'], {'term_rows': 3})
+  call assert_equal('running', term_getstatus(buf))
+  " It's only adding autocmd, so that no event occurs.
+  call term_sendkeys(buf, ":au! TextChanged <buffer> call writefile(['No'], 'Xchanged.txt')\<cr>")
+  call term_sendkeys(buf, "\<C-\\>\<C-N>:qa!\<cr>")
+  call WaitFor({-> term_getstatus(buf) == 'finished'})
+  call assert_equal([''], readfile('Xchanged.txt'))
+
+  " clean up
+  call delete('Xchanged.txt')
+  bwipe!
+endfunc
diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index ffc3bc3785..49e5d1f1a6 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -876,3 +876,26 @@ func Test_shellescape()
 
   let &shell = save_shell
 endfunc
+
+func Test_trim()
+  call assert_equal("Testing", trim("  \t\r\r\x0BTesting  \t\n\r\n\t\x0B\x0B"))
+  call assert_equal("Testing", trim("  \t  \r\r\n\n\x0BTesting  \t\n\r\n\t\x0B\x0B"))
+  call assert_equal("RESERVE", trim("xyz \twwRESERVEzyww \t\t", " wxyz\t"))
+  call assert_equal("wRE    \tSERVEzyww", trim("wRE    \tSERVEzyww"))
+  call assert_equal("abcd\t     xxxx   tail", trim(" \tabcd\t     xxxx   tail"))
+  call assert_equal("\tabcd\t     xxxx   tail", trim(" \tabcd\t     xxxx   tail", " "))
+  call assert_equal(" \tabcd\t     xxxx   tail", trim(" \tabcd\t     xxxx   tail", "abx"))
+  call assert_equal("RESERVE", trim("你RESERVE好", "你好"))
+  call assert_equal("您R E SER V E早", trim("你好您R E SER V E早好你你", "你好"))
+  call assert_equal("你好您R E SER V E早好你你", trim(" \n\r\r   你好您R E SER V E早好你你    \t  \x0B", ))
+  call assert_equal("您R E SER V E早好你你    \t  \x0B", trim("    你好您R E SER V E早好你你    \t  \x0B", " 你好"))
+  call assert_equal("您R E SER V E早好你你    \t  \x0B", trim("    tteesstttt你好您R E SER V E早好你你    \t  \x0B ttestt", " 你好tes"))
+  call assert_equal("您R E SER V E早好你你    \t  \x0B", trim("    tteesstttt你好您R E SER V E早好你你    \t  \x0B ttestt", "   你你你好好好tttsses"))
+  call assert_equal("留下", trim("这些些不要这些留下这些", "这些不要"))
+  call assert_equal("", trim("", ""))
+  call assert_equal("a", trim("a", ""))
+  call assert_equal("", trim("", "a"))
+
+  let chars = join(map(range(1, 0x20) + [0xa0], {n -> nr2char(n)}), '')
+  call assert_equal("x", trim(chars . "x" . chars))
+endfunc
diff --git a/src/version.c b/src/version.c
index 9777f32f9b..045c5f264c 100644
--- a/src/version.c
+++ b/src/version.c
@@ -781,6 +781,20 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1633,
+/**/
+    1632,
+/**/
+    1631,
+/**/
+    1630,
+/**/
+    1629,
+/**/
+    1628,
+/**/
+    1627,
 /**/
     1626,
 /**/