From 7483cef10021120ee1fd7444a7da4b832d51f334 Mon Sep 17 00:00:00 2001
From: Chong Yidong <cyd@stupidchicken.com>
Date: Fri, 25 Jul 2008 18:41:50 +0000
Subject: [PATCH] (tex-compilation-parse-errors): Check for invalid filename
 strings when parsing tex errors (bug#376).

---
 lisp/textmodes/tex-mode.el | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lisp/textmodes/tex-mode.el b/lisp/textmodes/tex-mode.el
index a42a195b8ec..da61ad5d893 100644
--- a/lisp/textmodes/tex-mode.el
+++ b/lisp/textmodes/tex-mode.el
@@ -2047,7 +2047,11 @@ for the error messages."
 		    (with-syntax-table tex-error-parse-syntax-table
 		      (backward-up-list 1)
 		      (skip-syntax-forward "(_")
-		      (while (not (file-readable-p (thing-at-point 'filename)))
+		      (while (not 
+			      (and (setq try-filename (thing-at-point
+						       'filename))
+				   (not (string= "" try-filename))
+				   (file-readable-p try-filename)))
 			(skip-syntax-backward "(_")
 			(backward-up-list 1)
 			(skip-syntax-forward "(_"))
-- 
2.39.5