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diff --git a/app/core/gimppalettemru.c b/app/core/gimppalettemru.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimppalettemru.c
+ * Copyright (C) 2014 Michael Natterer <mitch@gimp.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <cairo.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpconfig/gimpconfig.h"
+
+#include "core-types.h"
+
+#include "gimppalettemru.h"
+
+#include "gimp-intl.h"
+
+
+#define MAX_N_COLORS 256
+#define RGBA_EPSILON 1e-4
+
+enum
+{
+ COLOR_HISTORY = 1
+};
+
+
+G_DEFINE_TYPE (GimpPaletteMru, gimp_palette_mru, GIMP_TYPE_PALETTE)
+
+#define parent_class gimp_palette_mru_parent_class
+
+
+static void
+gimp_palette_mru_class_init (GimpPaletteMruClass *klass)
+{
+}
+
+static void
+gimp_palette_mru_init (GimpPaletteMru *palette)
+{
+}
+
+
+/* public functions */
+
+GimpData *
+gimp_palette_mru_new (const gchar *name)
+{
+ GimpPaletteMru *palette;
+
+ g_return_val_if_fail (name != NULL, NULL);
+ g_return_val_if_fail (*name != '\0', NULL);
+
+ palette = g_object_new (GIMP_TYPE_PALETTE_MRU,
+ "name", name,
+ "mime-type", "application/x-gimp-palette",
+ NULL);
+
+ return GIMP_DATA (palette);
+}
+
+void
+gimp_palette_mru_load (GimpPaletteMru *mru,
+ GFile *file)
+{
+ GimpPalette *palette;
+ GScanner *scanner;
+ GTokenType token;
+
+ g_return_if_fail (GIMP_IS_PALETTE_MRU (mru));
+ g_return_if_fail (G_IS_FILE (file));
+
+ palette = GIMP_PALETTE (mru);
+
+ scanner = gimp_scanner_new_gfile (file, NULL);
+ if (! scanner)
+ return;
+
+ g_scanner_scope_add_symbol (scanner, 0, "color-history",
+ GINT_TO_POINTER (COLOR_HISTORY));
+
+ token = G_TOKEN_LEFT_PAREN;
+
+ while (g_scanner_peek_next_token (scanner) == token)
+ {
+ token = g_scanner_get_next_token (scanner);
+
+ switch (token)
+ {
+ case G_TOKEN_LEFT_PAREN:
+ token = G_TOKEN_SYMBOL;
+ break;
+
+ case G_TOKEN_SYMBOL:
+ if (scanner->value.v_symbol == GINT_TO_POINTER (COLOR_HISTORY))
+ {
+ while (g_scanner_peek_next_token (scanner) == G_TOKEN_LEFT_PAREN)
+ {
+ GimpRGB color;
+
+ if (! gimp_scanner_parse_color (scanner, &color))
+ goto end;
+
+ gimp_palette_add_entry (palette, -1,
+ _("History Color"), &color);
+
+ if (gimp_palette_get_n_colors (palette) == MAX_N_COLORS)
+ goto end;
+ }
+ }
+ token = G_TOKEN_RIGHT_PAREN;
+ break;
+
+ case G_TOKEN_RIGHT_PAREN:
+ token = G_TOKEN_LEFT_PAREN;
+ break;
+
+ default: /* do nothing */
+ break;
+ }
+ }
+
+ end:
+ gimp_scanner_destroy (scanner);
+}
+
+void
+gimp_palette_mru_save (GimpPaletteMru *mru,
+ GFile *file)
+{
+ GimpPalette *palette;
+ GimpConfigWriter *writer;
+ GList *list;
+
+ g_return_if_fail (GIMP_IS_PALETTE_MRU (mru));
+ g_return_if_fail (G_IS_FILE (file));
+
+ writer = gimp_config_writer_new_gfile (file,
+ TRUE,
+ "GIMP colorrc\n\n"
+ "This file holds a list of "
+ "recently used colors.",
+ NULL);
+ if (! writer)
+ return;
+
+ palette = GIMP_PALETTE (mru);
+
+ gimp_config_writer_open (writer, "color-history");
+
+ for (list = palette->colors; list; list = g_list_next (list))
+ {
+ GimpPaletteEntry *entry = list->data;
+ gchar buf[4][G_ASCII_DTOSTR_BUF_SIZE];
+
+ g_ascii_dtostr (buf[0], G_ASCII_DTOSTR_BUF_SIZE, entry->color.r);
+ g_ascii_dtostr (buf[1], G_ASCII_DTOSTR_BUF_SIZE, entry->color.g);
+ g_ascii_dtostr (buf[2], G_ASCII_DTOSTR_BUF_SIZE, entry->color.b);
+ g_ascii_dtostr (buf[3], G_ASCII_DTOSTR_BUF_SIZE, entry->color.a);
+
+ gimp_config_writer_open (writer, "color-rgba");
+ gimp_config_writer_printf (writer, "%s %s %s %s",
+ buf[0], buf[1], buf[2], buf[3]);
+ gimp_config_writer_close (writer);
+ }
+
+ gimp_config_writer_close (writer);
+
+ gimp_config_writer_finish (writer, "end of colorrc", NULL);
+}
+
+void
+gimp_palette_mru_add (GimpPaletteMru *mru,
+ const GimpRGB *color)
+{
+ GimpPalette *palette;
+ GList *list;
+
+ g_return_if_fail (GIMP_IS_PALETTE_MRU (mru));
+ g_return_if_fail (color != NULL);
+
+ palette = GIMP_PALETTE (mru);
+
+ /* is the added color already there? */
+ for (list = gimp_palette_get_colors (palette);
+ list;
+ list = g_list_next (list))
+ {
+ GimpPaletteEntry *entry = list->data;
+
+ if (gimp_rgba_distance (&entry->color, color) < RGBA_EPSILON)
+ {
+ gimp_palette_move_entry (palette, entry, 0);
+
+ /* Even though they are nearly the same color, let's make them
+ * exactly equal.
+ */
+ gimp_palette_set_entry_color (palette, 0, color);
+
+ return;
+ }
+ }
+
+ if (gimp_palette_get_n_colors (palette) == MAX_N_COLORS)
+ {
+ gimp_palette_delete_entry (palette,
+ gimp_palette_get_entry (palette,
+ MAX_N_COLORS - 1));
+ }
+
+ gimp_palette_add_entry (palette, 0, _("History Color"), color);
+}