From 9c4fb65a582d86e5d8eb78496c2220464101a3d1 Mon Sep 17 00:00:00 2001
From: Tim Edwards <tim@opencircuitdesign.com>
Date: Sun, 19 Jul 2020 21:56:00 -0400
Subject: [PATCH] Corrected a problem with "lef read" that prevents it from
 working with non-standard extensions such as ".tlef".

---
 lef/lefWrite.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lef/lefWrite.c b/lef/lefWrite.c
index 848f7ab6..71ef906d 100644
--- a/lef/lefWrite.c
+++ b/lef/lefWrite.c
@@ -186,6 +186,11 @@ lefFileOpen(def, file, suffix, mode, prealfile)
     {
 	if (strcmp(endp, suffix))
 	{
+	    /* Try once as-is, with the given extension.  That takes care   */
+	    /* of some less-usual extensions like ".tlef".		    */
+	    if ((rfile = PaOpen(name, mode, NULL, Path, CellLibPath, prealfile)) != NULL)
+		return rfile;
+
 	    len = endp - name;
 	    if (len > sizeof namebuf - 1) len = sizeof namebuf - 1;
 	    (void) strncpy(namebuf, name, len);