Index: work/alien_formats/altium_parser/pcbdoc_ascii.c
===================================================================
--- work/alien_formats/altium_parser/pcbdoc_ascii.c	(revision 35278)
+++ work/alien_formats/altium_parser/pcbdoc_ascii.c	(revision 35279)
@@ -35,6 +35,13 @@
 
 #define block_size 65536L
 
+/* optional trace */
+#if 0
+#	define tprintf printf
+#else
+	static int tprintf(const char *fmt, ...) { return 0; }
+#endif
+
 int pcbdoc_ascii_test_parse(pcb_plug_io_t *ctx, pcb_plug_iot_t typ, const char *file_name, FILE *f)
 {
 	char line[256], *s;
@@ -127,7 +134,7 @@
 	for(blk = gdl_first(&tree->blocks); blk != NULL; blk = gdl_next(&tree->blocks, blk)) {
 		char *s = blk->raw, *end;
 
-printf("---blk---\n");
+		tprintf("---blk---\n");
 
 		for(;;) { /*  parse each line within the block */
 			int nl = 0;
@@ -149,7 +156,7 @@
 				return -1;
 			}
 			*end = '\0';
-printf("rec='%s'\n", s);
+			tprintf("rec='%s'\n", s);
 			s = end+1;
 
 			/* parse fields */
@@ -180,7 +187,7 @@
 				else
 					val = end;
 				
-printf("  %s=%s\n", key, val);
+				tprintf("  %s=%s\n", key, val);
 				s = end+1;
 				if (nl)
 					break;