Fix comments before AUTOINST confusing scanner.

	* verilog-mode.el (verilog-scan): Fix comments before AUTOINST
	confusing scanner, broke in r598.


git-svn-id: file:///verilog-mode-svn/trunk@605 db5bb42b-8904-0410-88e9-aa7026cf2ec3

Author: wsnyder

tests/autoinst_cmtcell_msg270.v

@@ -0,0 +1,15 @@
+module ex;
+
+   subwidth u_a2	// commented
+     (/*AUTOINST*/
+      // Outputs
+      .bus4a				(bus4a[0:3]));
+
+endmodule
+
+module subwidth (/*AUTOARG*/
+   // Outputs
+   bus4a
+   );
+   output [0:3] bus4a;
+endmodule

tests_ok/autoinst_cmtcell_msg270.v

@@ -0,0 +1,15 @@
+module ex;
+   
+   subwidth u_a2        // commented
+     (/*AUTOINST*/
+      // Outputs
+      .bus4a                            (bus4a[0:3]));
+   
+endmodule
+
+module subwidth (/*AUTOARG*/
+                 // Outputs
+                 bus4a
+                 );
+   output [0:3] bus4a;
+endmodule

verilog-mode.el

@@ -2579,15 +2579,17 @@ and `verilog-scan'.")
 Also assumes any text inserted since `verilog-scan-cache-tick'
 either is ok to parse as a non-comment, or `verilog-insert' was used."
   (unless (or (and verilog-scan-cache-preserving
-		   (eq verilog-scan-cache-preserving (current-buffer)))
+		   (eq verilog-scan-cache-preserving (current-buffer))
+		   verilog-scan-cache-tick)
 	      (equal verilog-scan-cache-tick (buffer-modified-tick)))
-    (setq verilog-scan-cache-tick (buffer-modified-tick))
     (save-excursion
       (let ((was-mod (buffer-modified-p))
 	    (buffer-read-only nil))
 	(remove-text-properties (point-min) (point-max) '(v-cmt nil))
 	(verilog-scan-region (point-min) (point-max))
-	(unless was-mod (set-buffer-modified-p nil))))))
+	(unless was-mod (set-buffer-modified-p nil))
+	;; Set tick last, as the property adds modify the buffer
+	(setq verilog-scan-cache-tick (buffer-modified-tick))))))
 
 (defun verilog-inside-comment-p ()
   "Check if point inside a comment.