Index: src/plug_io.c
===================================================================
--- src/plug_io.c	(revision 2639)
+++ src/plug_io.c	(revision 2640)
@@ -149,7 +149,7 @@
 }
 
 /* Find the plugin that offers the highest write prio for the format */
-static plug_io_t *find_writer(const char *fmt)
+static plug_io_t *find_writer(plug_iot_t typ, const char *fmt)
 {
 	find_t available[32]; /* wish we had more than 32 IO plugins... */
 	int len = 0;
@@ -168,7 +168,7 @@
 		} \
 	} while(0)
 
-	HOOK_CALL_ALL(plug_io_t, plug_io_chain, fmt_support_prio, cb_append, 1, fmt);
+	HOOK_CALL_ALL(plug_io_t, plug_io_chain, fmt_support_prio, cb_append, typ, 1, fmt);
 	if (len == 0)
 		return NULL;
 
@@ -181,7 +181,7 @@
 {
 	int res;
 
-	plug_io_t *p = find_writer(fmt);
+	plug_io_t *p = find_writer(PCB_IOT_BUFFER, fmt);
 
 	if (p != NULL)
 		res = p->write_buffer(p, f, buff);
@@ -194,7 +194,7 @@
 {
 	int res;
 
-	plug_io_t *p = find_writer(fmt);
+	plug_io_t *p = find_writer(PCB_IOT_FOOTPRINT, fmt);
 
 	if (p != NULL)
 		res = p->write_element(p, f, e);
@@ -206,7 +206,7 @@
 int WritePCB(FILE *f, const char *fmt)
 {
 	int res;
-	plug_io_t *p = find_writer(fmt);
+	plug_io_t *p = find_writer(PCB_IOT_PCB, fmt);
 
 	if (p != NULL) {
 		event(EVENT_SAVE_PRE, "s", fmt);
Index: src/plug_io.h
===================================================================
--- src/plug_io.h	(revision 2639)
+++ src/plug_io.h	(revision 2640)
@@ -31,6 +31,13 @@
 #include "global.h"
 #include "conf.h"
 
+typedef enum {
+	PCB_IOT_PCB        = 1,
+	PCB_IOT_FOOTPRINT  = 2,
+	PCB_IOT_FONT       = 4,
+	PCB_IOT_BUFFER     = 8
+} plug_iot_t;
+
 /**************************** API definition *********************************/
 struct plug_io_s {
 	plug_io_t *next;
@@ -37,10 +44,11 @@
 	void *plugin_data;
 
 	/* Check if the plugin supports format fmt, for writing (if wr != 0) or for
-	   reading (if wr == 0). Return 0 if not supported or an integer priority
-	   if supported. The higher the prio is the more likely the plugin gets
-	   the next operation on the file. Base prio should be 100 for native formats. */
-	int (*fmt_support_prio)(plug_io_t *ctx, int wr, const char *fmt);
+	   reading (if wr == 0) for I/O type typ. Return 0 if not supported or an
+	   integer priority if supported. The higher the prio is the more likely
+	   the plugin gets the next operation on the file. Base prio should be
+	   100 for native formats. */
+	int (*fmt_support_prio)(plug_io_t *ctx, plug_iot_t typ, int wr, const char *fmt);
 
 	/* Attempt to load a pcb design from Filename to Ptr.
 	   Conf subtree at settings_dest is replaced by settings loaded from the
Index: src_plugins/io_kicad_legacy/io_kicad_legacy.c
===================================================================
--- src_plugins/io_kicad_legacy/io_kicad_legacy.c	(revision 2639)
+++ src_plugins/io_kicad_legacy/io_kicad_legacy.c	(revision 2640)
@@ -31,9 +31,9 @@
 
 static plug_io_t io_kicad_legacy;
 
-int io_kicad_legacy_fmt(plug_io_t *ctx, int wr, const char *fmt)
+int io_kicad_legacy_fmt(plug_io_t *ctx, plug_iot_t typ, int wr, const char *fmt)
 {
-	if (strcmp(fmt, "kicadl") != 0)
+	if ((strcmp(fmt, "kicadl") != 0) || ((typ & (~(PCB_IOT_FOOTPRINT | PCB_IOT_BUFFER))) != 0))
 		return 0;
 	if (wr)
 		return 100;
Index: src_plugins/io_pcb/io_pcb.c
===================================================================
--- src_plugins/io_pcb/io_pcb.c	(revision 2639)
+++ src_plugins/io_pcb/io_pcb.c	(revision 2640)
@@ -31,8 +31,9 @@
 
 static plug_io_t io_pcb;
 
-int io_pcb_fmt(plug_io_t *ctx, int wr, const char *fmt)
+int io_pcb_fmt(plug_io_t *ctx, plug_iot_t typ, int wr, const char *fmt)
 {
+	/* All types are supported. */
 	if (strcmp(fmt, "pcb") != 0)
 		return 0;
 	return 100; /* read-write */