Index: trunk/src/change_act.c
===================================================================
--- trunk/src/change_act.c	(revision 29671)
+++ trunk/src/change_act.c	(revision 29672)
@@ -525,7 +525,7 @@
 		case F_Layer:
 			name = pcb_hid_prompt_for(PCB_ACT_HIDLIB, "Enter the layer name:", PCB_EMPTY(PCB_CURRLAYER(PCB_ACT_BOARD)->name), "Layer name");
 			/* NB: pcb_layer_rename_ takes ownership of the passed memory */
-			if (name && (pcb_layer_rename_(PCB_CURRLAYER(PCB_ACT_BOARD), name) == 0))
+			if (name && (pcb_layer_rename_(PCB_CURRLAYER(PCB_ACT_BOARD), name, 1) == 0))
 				pcb_board_set_changed_flag(pcb_true);
 			else
 				free(name);
Index: trunk/src/gui_act.c
===================================================================
--- trunk/src/gui_act.c	(revision 29671)
+++ trunk/src/gui_act.c	(revision 29672)
@@ -645,7 +645,7 @@
 		}
 		else if (strncmp(arg, "name=", 5) == 0) {
 			interactive = 0;
-			ret |= pcb_layer_rename_(ly, pcb_strdup(arg+5));
+			ret |= pcb_layer_rename_(ly, pcb_strdup(arg+5), 1);
 			pcb_board_set_changed_flag(pcb_true);
 		}
 		else if (strncmp(arg, "auto=", 5) == 0) {
Index: trunk/src/layer.c
===================================================================
--- trunk/src/layer.c	(revision 29671)
+++ trunk/src/layer.c	(revision 29672)
@@ -540,7 +540,7 @@
 	return id;
 }
 
-int pcb_layer_rename_(pcb_layer_t *Layer, char *Name)
+int pcb_layer_rename_(pcb_layer_t *Layer, char *Name, pcb_bool undoable)
 {
 	free((char*)Layer->name);
 	Layer->name = Name;
@@ -551,12 +551,12 @@
 	return 0;
 }
 
-int pcb_layer_rename(pcb_data_t *data, pcb_layer_id_t layer, const char *lname)
+int pcb_layer_rename(pcb_data_t *data, pcb_layer_id_t layer, const char *lname, pcb_bool undoable)
 {
-	return pcb_layer_rename_(&data->Layer[layer], pcb_strdup(lname));
+	return pcb_layer_rename_(&data->Layer[layer], pcb_strdup(lname), undoable);
 }
 
-int pcb_layer_recolor_(pcb_layer_t *Layer, const pcb_color_t *color)
+int pcb_layer_recolor_(pcb_layer_t *Layer, const pcb_color_t *color, pcb_bool undoable)
 {
 	if (Layer->is_bound)
 		return -1;
@@ -568,11 +568,11 @@
 	return 0;
 }
 
-int pcb_layer_recolor(pcb_data_t *data, pcb_layer_id_t layer, const char *color)
+int pcb_layer_recolor(pcb_data_t *data, pcb_layer_id_t layer, const char *color, pcb_bool undoable)
 {
 	pcb_color_t clr;
 	pcb_color_load_str(&clr, color);
-	return pcb_layer_recolor_(&data->Layer[layer], &clr);
+	return pcb_layer_recolor_(&data->Layer[layer], &clr, undoable);
 }
 
 #undef APPEND
Index: trunk/src/layer.h
===================================================================
--- trunk/src/layer.h	(revision 29671)
+++ trunk/src/layer.h	(revision 29672)
@@ -283,14 +283,14 @@
 const pcb_color_t *pcb_layer_default_color(int idx, pcb_layer_type_t lyt);
 
 /* Rename/recolor an existing layer by idx */
-int pcb_layer_rename(pcb_data_t *data, pcb_layer_id_t layer, const char *lname);
-int pcb_layer_recolor(pcb_data_t *data, pcb_layer_id_t layer, const char *lcolor);
+int pcb_layer_rename(pcb_data_t *data, pcb_layer_id_t layer, const char *lname, pcb_bool undoable);
+int pcb_layer_recolor(pcb_data_t *data, pcb_layer_id_t layer, const char *lcolor, pcb_bool undoable);
 
 /* changes the color of a layer; string has to be allocated by the caller (pcb_strdup) */
-int pcb_layer_rename_(pcb_layer_t *Layer, char *Name);
+int pcb_layer_rename_(pcb_layer_t *Layer, char *Name, pcb_bool undoable);
 
 /* Low level layer color change, parsed color must be available */
-int pcb_layer_recolor_(pcb_layer_t *Layer, const pcb_color_t *color);
+int pcb_layer_recolor_(pcb_layer_t *Layer, const pcb_color_t *color, pcb_bool undoable);
 
 /* index is 0..PCB_MAX_LAYER-1.  If old_index is -1, a new layer is
    inserted at that index.  If new_index is -1, the specified layer is
Index: trunk/src_plugins/dialogs/dlg_layer_flags.c
===================================================================
--- trunk/src_plugins/dialogs/dlg_layer_flags.c	(revision 29671)
+++ trunk/src_plugins/dialogs/dlg_layer_flags.c	(revision 29672)
@@ -74,7 +74,7 @@
 	if (failed == 0) {
 		pcb_layer_combining_t comb = 0;
 		if (strcmp(ly->name, dlg[wname].val.str) != 0) {
-			ar |= pcb_layer_rename_(ly, (char *)dlg[wname].val.str);
+			ar |= pcb_layer_rename_(ly, (char *)dlg[wname].val.str, 1);
 			pcb_board_set_changed_flag(pcb_true);
 		}
 		if (dlg[wsub].val.lng) comb |= PCB_LYC_SUB;
Index: trunk/src_plugins/io_hyp/parser.c
===================================================================
--- trunk/src_plugins/io_hyp/parser.c	(revision 29671)
+++ trunk/src_plugins/io_hyp/parser.c	(revision 29672)
@@ -885,13 +885,13 @@
 	switch (layer_count) {
 	case 1:
 		/* rename top copper and return */
-		pcb_layer_rename(PCB->Data, top_layer_id, lname);
+		pcb_layer_rename(PCB->Data, top_layer_id, lname, 0);
 		return top_layer_id;
 		break;
 
 	case 2:
 		/* rename bottom copper and return */
-		pcb_layer_rename(PCB->Data, bottom_layer_id, lname);
+		pcb_layer_rename(PCB->Data, bottom_layer_id, lname, 0);
 		return bottom_layer_id;
 		break;
 
Index: trunk/src_plugins/propedit/propsel.c
===================================================================
--- trunk/src_plugins/propedit/propsel.c	(revision 29671)
+++ trunk/src_plugins/propedit/propsel.c	(revision 29672)
@@ -415,7 +415,7 @@
 	pcb_color_t c;
 	if (pcb_color_load_str(&c, clr) != 0)
 		return -1;
-	return pcb_layer_recolor_(layer, &c);
+	return pcb_layer_recolor_(layer, &c, 1);
 }
 
 static int set_layer(pcb_propset_ctx_t *st, pcb_layer_t *layer)
@@ -429,7 +429,7 @@
 
 	if (strncmp(st->name, "p/layer/", 8) == 0) {
 		if ((strcmp(pn, "name") == 0) &&
-		    (pcb_layer_rename_(layer, pcb_strdup(st->s)) == 0)) DONE0;
+		    (pcb_layer_rename_(layer, pcb_strdup(st->s), 1) == 0)) DONE0;
 
 		if ((strcmp(pn, "color") == 0) &&
 		    (layer_recolor(layer, st->color.str) == 0)) DONE0;