From 9d29065947e21a6df854787292836374183035cd Mon Sep 17 00:00:00 2001
From: David Carlisle <d.p.carlisle@gmail.com>
Date: Sun, 27 Oct 2019 09:51:02 +0000
Subject: [PATCH] stringify @ fixes #5

---
 iftex.sty | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/iftex.sty b/iftex.sty
index e0b11bf..960123a 100644
--- a/iftex.sty
+++ b/iftex.sty
@@ -35,7 +35,7 @@
 \fi
 
 %Save @ catcode, to restore at end, not needed in LaTeX.
-\expandafter\chardef\csname IFTEX@at@catcode\endcsname\catcode64
+\expandafter\chardef\csname IFTEX\string @atcatcode\endcsname\catcode64
 \catcode 64 11
 
 % Message format used in several pre-existing if*tex packages
@@ -222,4 +222,4 @@ end
 }
 \fi
 
-\catcode64 \IFTEX@at@catcode
+\catcode64 \IFTEX@atcatcode