diff --git a/src/channel.c b/src/channel.c
index 6208d4dc27..d952e5bb6e 100644
--- a/src/channel.c
+++ b/src/channel.c
@@ -140,7 +140,7 @@ ch_log_active(void)
 }
 
     static void
-ch_log_lead(char *what, channel_T *ch)
+ch_log_lead(const char *what, channel_T *ch)
 {
     if (log_fd != NULL)
     {
@@ -1834,12 +1834,11 @@ channel_save(channel_T *channel, ch_part_T part, char_u *buf, int len,
 	head->rq_prev = node;
     }
 
-    if (log_fd != NULL && lead != NULL)
+    if (ch_log_active() && lead != NULL)
     {
 	ch_log_lead(lead, channel);
 	fprintf(log_fd, "'");
-	if (fwrite(buf, len, 1, log_fd) != 1)
-	    return FAIL;
+	ignored = (int)fwrite(buf, len, 1, log_fd);
 	fprintf(log_fd, "'\n");
     }
     return OK;
@@ -3410,7 +3409,7 @@ channel_read_block(channel_T *channel, ch_part_T part, int timeout)
 	    channel_consume(channel, part, (int)(nl - buf) + 1);
 	}
     }
-    if (log_fd != NULL)
+    if (ch_log_active())
 	ch_log(channel, "Returning %d bytes", (int)STRLEN(msg));
     return msg;
 }
@@ -3695,7 +3694,7 @@ channel_send(
 	return FAIL;
     }
 
-    if (log_fd != NULL)
+    if (ch_log_active())
     {
 	ch_log_lead("SEND ", channel);
 	fprintf(log_fd, "'");
diff --git a/src/mbyte.c b/src/mbyte.c
index fb28789306..0fd15e7324 100644
--- a/src/mbyte.c
+++ b/src/mbyte.c
@@ -4907,19 +4907,92 @@ im_preedit_window_set_position(void)
 im_preedit_window_open()
 {
     char *preedit_string;
+#if !GTK_CHECK_VERSION(3,16,0)
     char buf[8];
+#endif
     PangoAttrList *attr_list;
     PangoLayout *layout;
+#if GTK_CHECK_VERSION(3,0,0)
+# if !GTK_CHECK_VERSION(3,16,0)
+    GdkRGBA color;
+# endif
+#else
     GdkColor color;
+#endif
     gint w, h;
 
     if (preedit_window == NULL)
     {
 	preedit_window = gtk_window_new(GTK_WINDOW_POPUP);
+	gtk_window_set_transient_for(GTK_WINDOW(preedit_window),
+						     GTK_WINDOW(gui.mainwin));
 	preedit_label = gtk_label_new("");
+	gtk_widget_set_name(preedit_label, "vim-gui-preedit-area");
 	gtk_container_add(GTK_CONTAINER(preedit_window), preedit_label);
     }
 
+#if GTK_CHECK_VERSION(3,16,0)
+    {
+	GtkStyleContext * const context
+				  = gtk_widget_get_style_context(gui.drawarea);
+	GtkCssProvider * const provider = gtk_css_provider_new();
+	gchar		   *css = NULL;
+	const char * const fontname
+			   = pango_font_description_get_family(gui.norm_font);
+	gint	fontsize
+		= pango_font_description_get_size(gui.norm_font) / PANGO_SCALE;
+	gchar	*fontsize_propval = NULL;
+
+	if (!pango_font_description_get_size_is_absolute(gui.norm_font))
+	{
+	    /* fontsize was given in points.  Convert it into that in pixels
+	     * to use with CSS. */
+	    GdkScreen * const screen
+		  = gdk_window_get_screen(gtk_widget_get_window(gui.mainwin));
+	    const gdouble dpi = gdk_screen_get_resolution(screen);
+	    fontsize = dpi * fontsize / 72;
+	}
+	if (fontsize > 0)
+	    fontsize_propval = g_strdup_printf("%dpx", fontsize);
+	else
+	    fontsize_propval = g_strdup_printf("inherit");
+
+	css = g_strdup_printf(
+		"widget#vim-gui-preedit-area {\n"
+		"  font-family: %s,monospace;\n"
+		"  font-size: %s;\n"
+		"  color: #%.2lx%.2lx%.2lx;\n"
+		"  background-color: #%.2lx%.2lx%.2lx;\n"
+		"}\n",
+		fontname != NULL ? fontname : "inherit",
+		fontsize_propval,
+		(gui.norm_pixel >> 16) & 0xff,
+		(gui.norm_pixel >> 8) & 0xff,
+		gui.norm_pixel & 0xff,
+		(gui.back_pixel >> 16) & 0xff,
+		(gui.back_pixel >> 8) & 0xff,
+		gui.back_pixel & 0xff);
+
+	gtk_css_provider_load_from_data(provider, css, -1, NULL);
+	gtk_style_context_add_provider(context,
+				     GTK_STYLE_PROVIDER(provider), G_MAXUINT);
+
+	g_free(css);
+	g_free(fontsize_propval);
+	g_object_unref(provider);
+    }
+#elif GTK_CHECK_VERSION(3,0,0)
+    gtk_widget_override_font(preedit_label, gui.norm_font);
+
+    vim_snprintf(buf, sizeof(buf), "#%06X", gui.norm_pixel);
+    gdk_rgba_parse(&color, buf);
+    gtk_widget_override_color(preedit_label, GTK_STATE_FLAG_NORMAL, &color);
+
+    vim_snprintf(buf, sizeof(buf), "#%06X", gui.back_pixel);
+    gdk_rgba_parse(&color, buf);
+    gtk_widget_override_background_color(preedit_label, GTK_STATE_FLAG_NORMAL,
+								      &color);
+#else
     gtk_widget_modify_font(preedit_label, gui.norm_font);
 
     vim_snprintf(buf, sizeof(buf), "#%06X", gui.norm_pixel);
@@ -4929,6 +5002,7 @@ im_preedit_window_open()
     vim_snprintf(buf, sizeof(buf), "#%06X", gui.back_pixel);
     gdk_color_parse(buf, &color);
     gtk_widget_modify_bg(preedit_window, GTK_STATE_NORMAL, &color);
+#endif
 
     gtk_im_context_get_preedit_string(xic, &preedit_string, &attr_list, NULL);
 
diff --git a/src/proto/screen.pro b/src/proto/screen.pro
index b40e0dadca..39424b485b 100644
--- a/src/proto/screen.pro
+++ b/src/proto/screen.pro
@@ -10,7 +10,7 @@ int redraw_asap(int type);
 void redraw_after_callback(int call_update_screen);
 void redrawWinline(linenr_T lnum, int invalid);
 void update_curbuf(int type);
-void update_screen(int type_arg);
+int update_screen(int type_arg);
 int conceal_cursor_line(win_T *wp);
 void conceal_check_cursur_line(void);
 void update_single_line(win_T *wp, linenr_T lnum);
diff --git a/src/proto/syntax.pro b/src/proto/syntax.pro
index 7247c5174f..0f64ceaf8c 100644
--- a/src/proto/syntax.pro
+++ b/src/proto/syntax.pro
@@ -52,6 +52,7 @@ int syn_namen2id(char_u *linep, int len);
 int syn_check_group(char_u *pp, int len);
 int syn_id2attr(int hl_id);
 int syn_id2colors(int hl_id, guicolor_T *fgp, guicolor_T *bgp);
+void syn_id2cterm_bg(int hl_id, int *fgp, int *bgp);
 int syn_get_final_id(int hl_id);
 void highlight_gui_started(void);
 int highlight_changed(void);
diff --git a/src/screen.c b/src/screen.c
index 26d064a2d7..451ced7be0 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -538,8 +538,9 @@ update_curbuf(int type)
 /*
  * Based on the current value of curwin->w_topline, transfer a screenfull
  * of stuff from Filemem to ScreenLines[], and update curwin->w_botline.
+ * Return OK when the screen was updated, FAIL if it was not done.
  */
-    void
+    int
 update_screen(int type_arg)
 {
     int		type = type_arg;
@@ -557,7 +558,7 @@ update_screen(int type_arg)
 
     /* Don't do anything if the screen structures are (not yet) valid. */
     if (!screen_valid(TRUE))
-	return;
+	return FAIL;
 
     if (type == VALID_NO_UPDATE)
     {
@@ -589,7 +590,7 @@ update_screen(int type_arg)
 	must_redraw = type;
 	if (type > INVERTED_ALL)
 	    curwin->w_lines_valid = 0;	/* don't use w_lines[].wl_size now */
-	return;
+	return FAIL;
     }
 
     updating_screen = TRUE;
@@ -842,6 +843,7 @@ update_screen(int type_arg)
 	gui_update_scrollbars(FALSE);
     }
 #endif
+    return OK;
 }
 
 #if defined(FEAT_SIGNS) || defined(FEAT_GUI) || defined(FEAT_CONCEAL)
diff --git a/src/syntax.c b/src/syntax.c
index a55daae8de..681026403b 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -9710,7 +9710,7 @@ syn_id2attr(int hl_id)
     return attr;
 }
 
-#ifdef FEAT_GUI
+#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS) || defined(PROTO)
 /*
  * Get the GUI colors and attributes for a group ID.
  * NOTE: the colors will be INVALCOLOR when not set, the color otherwise.
@@ -9729,6 +9729,19 @@ syn_id2colors(int hl_id, guicolor_T *fgp, guicolor_T *bgp)
 }
 #endif
 
+#if defined(FEAT_TERMINAL) || defined(PROT)
+    void
+syn_id2cterm_bg(int hl_id, int *fgp, int *bgp)
+{
+    struct hl_group	*sgp;
+
+    hl_id = syn_get_final_id(hl_id);
+    sgp = &HL_TABLE()[hl_id - 1];	    /* index is ID minus one */
+    *fgp = sgp->sg_cterm_fg - 1;
+    *bgp = sgp->sg_cterm_bg - 1;
+}
+#endif
+
 /*
  * Translate a group ID to the final group ID (following links).
  */
diff --git a/src/terminal.c b/src/terminal.c
index 969cfa4362..59ab4ed7fe 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -38,9 +38,10 @@
  * in tl_scrollback are no longer used.
  *
  * TODO:
- * - patch to use GUI or cterm colors for vterm. Yasuhiro, #2067
  * - patch to add tmap, jakalope (Jacob Askeland) #2073
- * - Redirecting output does not work on MS-Windows.
+ * - Redirecting output does not work on MS-Windows, Test_terminal_redir_file()
+ *   is disabled.
+ * - test_terminal_no_cmd hangs (Christian)
  * - implement term_setsize()
  * - add test for giving error for invalid 'termsize' value.
  * - support minimal size when 'termsize' is "rows*cols".
@@ -1548,7 +1549,8 @@ terminal_loop(void)
 	/* TODO: skip screen update when handling a sequence of keys. */
 	/* Repeat redrawing in case a message is received while redrawing. */
 	while (curwin->w_redr_type != 0)
-	    update_screen(0);
+	    if (update_screen(0) == FAIL)
+		break;
 	update_cursor(curbuf->b_term, FALSE);
 
 	c = term_vgetc();
@@ -1741,7 +1743,7 @@ color2index(VTermColor *color, int fg, int *boldp)
     else if (red == 128)
     {
 	if (green == 128 && blue == 128)
-	    return lookup_color(12, fg, boldp) + 1; /* high intensity black / dark grey */
+	    return lookup_color(12, fg, boldp) + 1; /* dark grey */
     }
     else if (red == 255)
     {
@@ -2387,6 +2389,65 @@ term_get_attr(buf_T *buf, linenr_T lnum, int col)
     return cell2attr(cellattr->attrs, cellattr->fg, cellattr->bg);
 }
 
+static VTermColor ansi_table[16] = {
+  {  0,   0,   0}, /* black */
+  {224,   0,   0}, /* dark red */
+  {  0, 224,   0}, /* dark green */
+  {224, 224,   0}, /* dark yellow / brown */
+  {  0,   0, 224}, /* dark blue */
+  {224,   0, 224}, /* dark magenta */
+  {  0, 224, 224}, /* dark cyan */
+  {224, 224, 224}, /* light grey */
+
+  {128, 128, 128}, /* dark grey */
+  {255,  64,  64}, /* light red */
+  { 64, 255,  64}, /* light green */
+  {255, 255,  64}, /* yellow */
+  { 64,  64, 255}, /* light blue */
+  {255,  64, 255}, /* light magenta */
+  { 64, 255, 255}, /* light cyan */
+  {255, 255, 255}, /* white */
+};
+
+static int cube_value[] = {
+    0x00, 0x33, 0x66, 0x99, 0xCC, 0xFF,
+};
+
+static int grey_ramp[] = {
+    0x00, 0x0B, 0x16, 0x21, 0x2C, 0x37, 0x42, 0x4D, 0x58, 0x63, 0x6E, 0x79,
+    0x85, 0x90, 0x9B, 0xA6, 0xB1, 0xBC, 0xC7, 0xD2, 0xDD, 0xE8, 0xF3, 0xFF,
+};
+
+/*
+ * Convert a cterm color number 0 - 255 to RGB.
+ */
+    static void
+cterm_color2rgb(int nr, VTermColor *rgb)
+{
+    int idx;
+
+    if (nr < 16)
+    {
+	*rgb = ansi_table[nr];
+    }
+    else if (nr < 232)
+    {
+	/* 216 color cube */
+	idx = nr - 16;
+	rgb->blue  = cube_value[idx      % 6];
+	rgb->green = cube_value[idx / 6  % 6];
+	rgb->red   = cube_value[idx / 36 % 6];
+    }
+    else if (nr < 256)
+    {
+	/* 24 grey scale ramp */
+	idx = nr - 232;
+	rgb->blue  = grey_ramp[nr];
+	rgb->green = grey_ramp[nr];
+	rgb->red   = grey_ramp[nr];
+    }
+}
+
 /*
  * Create a new vterm and initialize it.
  */
@@ -2398,6 +2459,7 @@ create_vterm(term_T *term, int rows, int cols)
     VTermValue	    value;
     VTermColor	    *fg, *bg;
     int		    fgval, bgval;
+    int		    id;
 
     vterm = vterm_new(rows, cols);
     term->tl_vterm = vterm;
@@ -2406,12 +2468,13 @@ create_vterm(term_T *term, int rows, int cols)
     /* TODO: depends on 'encoding'. */
     vterm_set_utf8(vterm, 1);
 
-    /* Vterm uses a default black background.  Set it to white when
-     * 'background' is "light". */
     vim_memset(&term->tl_default_color.attrs, 0, sizeof(VTermScreenCellAttrs));
     term->tl_default_color.width = 1;
     fg = &term->tl_default_color.fg;
     bg = &term->tl_default_color.bg;
+
+    /* Vterm uses a default black background.  Set it to white when
+     * 'background' is "light". */
     if (*p_bg == 'l')
     {
 	fgval = 0;
@@ -2424,6 +2487,76 @@ create_vterm(term_T *term, int rows, int cols)
     }
     fg->red = fg->green = fg->blue = fgval;
     bg->red = bg->green = bg->blue = bgval;
+
+    /* The "Terminal" highlight group overrules the defaults. */
+    id = syn_name2id((char_u *)"Terminal");
+
+    /* Use the actual color for the GUI and when 'guitermcolors' is set. */
+#if defined(FEAT_GUI) || defined(FEAT_TERMGUICOLORS)
+    if (0
+# ifdef FEAT_GUI
+	    || gui.in_use
+# endif
+# ifdef FEAT_TERMGUICOLORS
+	    || p_tgc
+# endif
+       )
+    {
+	guicolor_T	    fg_rgb, bg_rgb;
+
+	if (id != 0)
+	    syn_id2colors(id, &fg_rgb, &bg_rgb);
+
+# ifdef FEAT_GUI
+	if (gui.in_use)
+	{
+	    if (fg_rgb == INVALCOLOR)
+		fg_rgb = gui.norm_pixel;
+	    if (bg_rgb == INVALCOLOR)
+		bg_rgb = gui.back_pixel;
+	}
+#  ifdef FEAT_TERMGUICOLORS
+	else
+#  endif
+# endif
+# ifdef FEAT_TERMGUICOLORS
+	{
+	    if (fg_rgb == INVALCOLOR)
+		fg_rgb = cterm_normal_fg_gui_color;
+	    if (bg_rgb == INVALCOLOR)
+		bg_rgb = cterm_normal_bg_gui_color;
+	}
+# endif
+	if (fg_rgb != INVALCOLOR)
+	{
+	    long_u rgb = GUI_MCH_GET_RGB(fg_rgb);
+
+	    fg->red = (unsigned)(rgb >> 16);
+	    fg->green = (unsigned)(rgb >> 8) & 255;
+	    fg->blue = (unsigned)rgb & 255;
+	}
+	if (bg_rgb != INVALCOLOR)
+	{
+	    long_u rgb = GUI_MCH_GET_RGB(bg_rgb);
+
+	    bg->red = (unsigned)(rgb >> 16);
+	    bg->green = (unsigned)(rgb >> 8) & 255;
+	    bg->blue = (unsigned)rgb & 255;
+	}
+    }
+    else
+#endif
+    if (id != 0 && t_colors >= 16)
+    {
+	int cterm_fg, cterm_bg;
+
+	syn_id2cterm_bg(id, &cterm_fg, &cterm_bg);
+	if (cterm_fg >= 0)
+	    cterm_color2rgb(cterm_fg, fg);
+	if (cterm_bg >= 0)
+	    cterm_color2rgb(cterm_bg, bg);
+    }
+
     vterm_state_set_default_colors(vterm_obtain_state(vterm), fg, bg);
 
     /* Required to initialize most things. */
diff --git a/src/version.c b/src/version.c
index d582666e7d..618174490a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -784,6 +784,14 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1102,
+/**/
+    1101,
+/**/
+    1100,
+/**/
+    1099,
 /**/
     1098,
 /**/